diff options
| author | Ben Noordhuis <info@bnoordhuis.nl> | 2012-10-06 23:04:30 +0200 |
|---|---|---|
| committer | Ben Noordhuis <info@bnoordhuis.nl> | 2012-10-07 00:44:38 +0200 |
| commit | ee77a6a953c65ff1fddf4017496387c42dd84d63 (patch) | |
| tree | e87fedec086f8411ac52027c6a7570f60e30bd1d | |
| parent | 836a06fc4f4920d5e9675763290c97aa4e7288fe (diff) | |
| download | node-new-ee77a6a953c65ff1fddf4017496387c42dd84d63.tar.gz | |
deps: upgrade libuv to b9ed1a6
67 files changed, 1958 insertions, 19300 deletions
diff --git a/deps/uv/LICENSE b/deps/uv/LICENSE index ae9c747dee..65296f4b25 100644 --- a/deps/uv/LICENSE +++ b/deps/uv/LICENSE @@ -36,9 +36,6 @@ The externally maintained libraries used by libuv are: - libev, located at ev/ is copyright Marc Alexander Lehmann, and dual-licensed under the MIT license and GPL2. - - libeio, located at eio/ is copyright Marc Alexander Lehmann, and - dual-licensed under the MIT license and GPL2. - - inet_pton and inet_ntop implementations, contained in src/inet.c, are copyright the Internet Systems Consortium, Inc., and licensed under the ISC license. diff --git a/deps/uv/README.md b/deps/uv/README.md index 6789ffcb0c..e553fe81dd 100644 --- a/deps/uv/README.md +++ b/deps/uv/README.md @@ -36,6 +36,9 @@ http://nodejs.org/ * IPC and socket sharing between processes `uv_write2` +## Community + + * [Mailing list](http://groups.google.com/group/libuv) ## Documentation @@ -43,6 +46,10 @@ http://nodejs.org/ — API documentation in the form of detailed header comments. * [An Introduction to libuv](http://nikhilm.github.com/uvbook/) — An overview of libuv with tutorials. + * [LXJS 2012 talk](http://www.youtube.com/watch?v=nGn60vDSxQ4) - High-level + introductory talk about libuv. + * [Tests and benchmarks](https://github.com/joyent/libuv/tree/master/test) - + API specification and usage examples. ## Build Instructions diff --git a/deps/uv/common.gypi b/deps/uv/common.gypi index 0ffb45e8d4..a222c3240d 100644 --- a/deps/uv/common.gypi +++ b/deps/uv/common.gypi @@ -117,6 +117,11 @@ # POSIX names '_CRT_NONSTDC_NO_DEPRECATE', ], + 'target_conditions': [ + ['target_arch=="x64"', { + 'msvs_configuration_platform': 'x64' + }] + ] }], [ 'OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"', { 'cflags': [ '-Wall' ], diff --git a/deps/uv/config-unix.mk b/deps/uv/config-unix.mk index b4d1ec8c25..4269dad378 100644 --- a/deps/uv/config-unix.mk +++ b/deps/uv/config-unix.mk @@ -32,6 +32,7 @@ OBJS += src/unix/core.o OBJS += src/unix/dl.o OBJS += src/unix/error.o OBJS += src/unix/fs.o +OBJS += src/unix/getaddrinfo.o OBJS += src/unix/loop.o OBJS += src/unix/loop-watcher.o OBJS += src/unix/pipe.o @@ -41,21 +42,20 @@ OBJS += src/unix/signal.o OBJS += src/unix/stream.o OBJS += src/unix/tcp.o OBJS += src/unix/thread.o +OBJS += src/unix/threadpool.o OBJS += src/unix/timer.o OBJS += src/unix/tty.o OBJS += src/unix/udp.o ifeq (SunOS,$(uname_S)) EV_CONFIG=config_sunos.h -EIO_CONFIG=config_sunos.h CPPFLAGS += -D__EXTENSIONS__ -D_XOPEN_SOURCE=500 -LINKFLAGS+=-lsocket -lnsl -lkstat +LINKFLAGS+=-lkstat -lnsl -lsendfile -lsocket OBJS += src/unix/sunos.o endif ifeq (AIX,$(uname_S)) EV_CONFIG=config_aix.h -EIO_CONFIG=config_aix.h CPPFLAGS += -Isrc/ares/config_aix -D_ALL_SOURCE -D_XOPEN_SOURCE=500 LINKFLAGS+= -lperfstat OBJS += src/unix/aix.o @@ -63,7 +63,6 @@ endif ifeq (Darwin,$(uname_S)) EV_CONFIG=config_darwin.h -EIO_CONFIG=config_darwin.h CPPFLAGS += -D_DARWIN_USE_64_BIT_INODE=1 LINKFLAGS+=-framework CoreServices OBJS += src/unix/darwin.o @@ -73,7 +72,6 @@ endif ifeq (Linux,$(uname_S)) EV_CONFIG=config_linux.h -EIO_CONFIG=config_linux.h CSTDFLAG += -D_GNU_SOURCE LINKFLAGS+=-ldl -lrt OBJS += src/unix/linux/linux-core.o \ @@ -83,7 +81,6 @@ endif ifeq (FreeBSD,$(uname_S)) EV_CONFIG=config_freebsd.h -EIO_CONFIG=config_freebsd.h LINKFLAGS+=-lkvm OBJS += src/unix/freebsd.o OBJS += src/unix/kqueue.o @@ -91,7 +88,6 @@ endif ifeq (DragonFly,$(uname_S)) EV_CONFIG=config_freebsd.h -EIO_CONFIG=config_freebsd.h LINKFLAGS+= OBJS += src/unix/freebsd.o OBJS += src/unix/kqueue.o @@ -99,7 +95,6 @@ endif ifeq (NetBSD,$(uname_S)) EV_CONFIG=config_netbsd.h -EIO_CONFIG=config_netbsd.h LINKFLAGS+=-lkvm OBJS += src/unix/netbsd.o OBJS += src/unix/kqueue.o @@ -107,7 +102,6 @@ endif ifeq (OpenBSD,$(uname_S)) EV_CONFIG=config_openbsd.h -EIO_CONFIG=config_openbsd.h LINKFLAGS+=-lkvm OBJS += src/unix/openbsd.o OBJS += src/unix/kqueue.o @@ -115,7 +109,6 @@ endif ifneq (,$(findstring CYGWIN,$(uname_S))) EV_CONFIG=config_cygwin.h -EIO_CONFIG=config_cygwin.h # We drop the --std=c89, it hides CLOCK_MONOTONIC on cygwin CSTDFLAG = -D_GNU_SOURCE LINKFLAGS+= @@ -135,7 +128,7 @@ endif RUNNER_LIBS= RUNNER_SRC=test/runner-unix.c -uv.a: $(OBJS) src/fs-poll.o src/inet.o src/uv-common.o src/unix/ev/ev.o src/unix/uv-eio.o src/unix/eio/eio.o +uv.a: $(OBJS) src/fs-poll.o src/inet.o src/uv-common.o src/unix/ev/ev.o $(AR) rcs uv.a $^ src/%.o: src/%.c include/uv.h include/uv-private/uv-unix.h @@ -147,29 +140,14 @@ src/unix/%.o: src/unix/%.c include/uv.h include/uv-private/uv-unix.h src/unix/in src/unix/ev/ev.o: src/unix/ev/ev.c $(CC) $(CPPFLAGS) $(CFLAGS) -c src/unix/ev/ev.c -o src/unix/ev/ev.o -DEV_CONFIG_H=\"$(EV_CONFIG)\" - -EIO_CPPFLAGS += $(CPPFLAGS) -EIO_CPPFLAGS += -DEIO_CONFIG_H=\"$(EIO_CONFIG)\" -EIO_CPPFLAGS += -DEIO_STACKSIZE=262144 -EIO_CPPFLAGS += -D_GNU_SOURCE - -src/unix/eio/eio.o: src/unix/eio/eio.c - $(CC) $(EIO_CPPFLAGS) $(CFLAGS) -c src/unix/eio/eio.c -o src/unix/eio/eio.o - -src/unix/uv-eio.o: src/unix/uv-eio.c - $(CC) $(CPPFLAGS) -Isrc/unix/eio/ $(CSTDFLAG) $(CFLAGS) -c src/unix/uv-eio.c -o src/unix/uv-eio.o - - clean-platform: -rm -f src/unix/*.o -rm -f src/unix/ev/*.o - -rm -f src/unix/eio/*.o -rm -f src/unix/linux/*.o -rm -rf test/run-tests.dSYM run-benchmarks.dSYM distclean-platform: -rm -f src/unix/*.o -rm -f src/unix/ev/*.o - -rm -f src/unix/eio/*.o -rm -f src/unix/linux/*.o -rm -rf test/run-tests.dSYM run-benchmarks.dSYM diff --git a/deps/uv/gyp_uv b/deps/uv/gyp_uv index 9c719fde56..bdbf495d1f 100755 --- a/deps/uv/gyp_uv +++ b/deps/uv/gyp_uv @@ -45,6 +45,9 @@ if __name__ == '__main__': args.append(os.path.join(uv_root, 'uv.gyp')) common_fn = os.path.join(uv_root, 'common.gypi') options_fn = os.path.join(uv_root, 'options.gypi') + # we force vs 2010 over 2008 which would otherwise be the default for gyp + if not os.environ.get('GYP_MSVS_VERSION'): + os.environ['GYP_MSVS_VERSION'] = '2010' else: args.append(os.path.join(os.path.abspath(uv_root), 'uv.gyp')) common_fn = os.path.join(os.path.abspath(uv_root), 'common.gypi') @@ -69,9 +72,14 @@ if __name__ == '__main__': args.append('-Dgcc_version=%d' % (10 * major + minor)) args.append('-Dclang=%d' % int(is_clang)) - args.append('-Dtarget_arch=ia32') + if not any(a.startswith('-Dtarget_arch') for a in args): + args.append('-Dtarget_arch=ia32') + + if not any(a.startswith('-Dlibrary') for a in args): + args.append('-Dlibrary=static_library') + args.append('-Dcomponent=static_library') - args.append('-Dlibrary=static_library') + gyp_args = list(args) print gyp_args run_gyp(gyp_args) diff --git a/deps/uv/include/uv-private/eio.h b/deps/uv/include/uv-private/eio.h deleted file mode 100644 index 975f7ef8a5..0000000000 --- a/deps/uv/include/uv-private/eio.h +++ /dev/null @@ -1,403 +0,0 @@ -/* - * libeio API header - * - * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#ifndef EIO_H_ -#define EIO_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -#include <stddef.h> -#include <signal.h> -#include <sys/types.h> - -typedef struct eio_req eio_req; -typedef struct eio_dirent eio_dirent; - -typedef int (*eio_cb)(eio_req *req); - -#ifndef EIO_REQ_MEMBERS -# define EIO_REQ_MEMBERS -#endif - -#ifndef EIO_STRUCT_STAT -# ifdef _WIN32 -# define EIO_STRUCT_STAT struct _stati64 -# define EIO_STRUCT_STATI64 -# else -# define EIO_STRUCT_STAT struct stat -# endif -#endif - -#ifdef _WIN32 - typedef int eio_uid_t; - typedef int eio_gid_t; - typedef int eio_mode_t; - #ifdef __MINGW32__ /* no intptr_t */ - typedef ssize_t eio_ssize_t; - #else - typedef intptr_t eio_ssize_t; /* or SSIZE_T */ - #endif - #if __GNUC__ - typedef long long eio_ino_t; - #else - typedef __int64 eio_ino_t; /* unsigned not supported by msvc */ - #endif -#else - typedef uid_t eio_uid_t; - typedef gid_t eio_gid_t; - typedef ssize_t eio_ssize_t; - typedef ino_t eio_ino_t; - typedef mode_t eio_mode_t; -#endif - -#ifndef EIO_STRUCT_STATVFS -# define EIO_STRUCT_STATVFS struct statvfs -#endif - -/* for readdir */ - -/* eio_readdir flags */ -enum -{ - EIO_READDIR_DENTS = 0x01, /* ptr2 contains eio_dirents, not just the (unsorted) names */ - EIO_READDIR_DIRS_FIRST = 0x02, /* dirents gets sorted into a good stat() ing order to find directories first */ - EIO_READDIR_STAT_ORDER = 0x04, /* dirents gets sorted into a good stat() ing order to quickly stat all files */ - EIO_READDIR_FOUND_UNKNOWN = 0x80, /* set by eio_readdir when *_ARRAY was set and any TYPE=UNKNOWN's were found */ - - EIO_READDIR_CUSTOM1 = 0x100, /* for use by apps */ - EIO_READDIR_CUSTOM2 = 0x200 /* for use by apps */ -}; - -/* using "typical" values in the hope that the compiler will do something sensible */ -enum eio_dtype -{ - EIO_DT_UNKNOWN = 0, - EIO_DT_FIFO = 1, - EIO_DT_CHR = 2, - EIO_DT_MPC = 3, /* multiplexed char device (v7+coherent) */ - EIO_DT_DIR = 4, - EIO_DT_NAM = 5, /* xenix special named file */ - EIO_DT_BLK = 6, - EIO_DT_MPB = 7, /* multiplexed block device (v7+coherent) */ - EIO_DT_REG = 8, - EIO_DT_NWK = 9, /* HP-UX network special */ - EIO_DT_CMP = 9, /* VxFS compressed */ - EIO_DT_LNK = 10, - /* DT_SHAD = 11,*/ - EIO_DT_SOCK = 12, - EIO_DT_DOOR = 13, /* solaris door */ - EIO_DT_WHT = 14, - EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */ -}; - -struct eio_dirent -{ - int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */ - unsigned short namelen; /* size of filename without trailing 0 */ - unsigned char type; /* one of EIO_DT_* */ - signed char score; /* internal use */ - eio_ino_t inode; /* the inode number, if available, otherwise unspecified */ -}; - -/* eio_msync flags */ -enum -{ - EIO_MS_ASYNC = 1, - EIO_MS_INVALIDATE = 2, - EIO_MS_SYNC = 4 -}; - -/* eio_mtouch flags */ -enum -{ - EIO_MT_MODIFY = 1 -}; - -/* eio_sync_file_range flags */ -enum -{ - EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1, - EIO_SYNC_FILE_RANGE_WRITE = 2, - EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4 -}; - -/* eio_fallocate flags */ -enum -{ - EIO_FALLOC_FL_KEEP_SIZE = 1 /* MUST match the value in linux/falloc.h */ -}; - -/* timestamps and differences - feel free to use double in your code directly */ -typedef double eio_tstamp; - -/* the eio request structure */ -enum -{ - EIO_CUSTOM, - EIO_OPEN, EIO_CLOSE, EIO_DUP2, - EIO_READ, EIO_WRITE, - EIO_READAHEAD, EIO_SENDFILE, - EIO_STAT, EIO_LSTAT, EIO_FSTAT, - EIO_STATVFS, EIO_FSTATVFS, - EIO_TRUNCATE, EIO_FTRUNCATE, - EIO_UTIME, EIO_FUTIME, - EIO_CHMOD, EIO_FCHMOD, - EIO_CHOWN, EIO_FCHOWN, - EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC, EIO_SYNCFS, - EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE, EIO_FALLOCATE, - EIO_MLOCK, EIO_MLOCKALL, - EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME, - EIO_MKNOD, EIO_READDIR, - EIO_LINK, EIO_SYMLINK, EIO_READLINK, EIO_REALPATH, - EIO_GROUP, EIO_NOP, - EIO_BUSY -}; - -/* mlockall constants */ -enum -{ - EIO_MCL_CURRENT = 1, - EIO_MCL_FUTURE = 2 -}; - -/* request priorities */ - -enum { - EIO_PRI_MIN = -4, - EIO_PRI_MAX = 4, - EIO_PRI_DEFAULT = 0 -}; - -#define ETP_PRI_MIN EIO_PRI_MIN -#define ETP_PRI_MAX EIO_PRI_MAX - -#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) - -#define ETP_REQ eio_req - -/* - * a somewhat faster data structure might be nice, but - * with 8 priorities this actually needs <20 insns - * per shift, the most expensive operation. - */ -typedef struct { - ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */ - int size; -} etp_reqq; - -typedef struct { - etp_reqq res_queue; /* queue of outstanding responses for this channel */ - void *data; /* use this for what you want */ -} eio_channel; - -/* eio request structure */ -/* this structure is mostly read-only */ -/* when initialising it, all members must be zero-initialised */ -struct eio_req -{ - eio_req volatile *next; /* private ETP */ - - eio_ssize_t result; /* result of syscall, e.g. result = read (... */ - off_t offs; /* read, write, truncate, readahead, sync_file_range, fallocate: file offset, mknod: dev_t */ - size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range, fallocate: length */ - void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */ - void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */ - eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */ - eio_tstamp nv2; /* utime, futime: mtime */ - - int type; /* EIO_xxx constant ETP */ - int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */ - long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range, fallocate: flags */ - long int3; /* chown, fchown: gid */ - int errorno; /* errno value on syscall return */ - - eio_channel *channel; /* data used to direct poll callbacks arising from this req */ - -#if defined(__i386) || defined(__amd64) - unsigned char cancelled; -#else - sig_atomic_t cancelled; -#endif - - unsigned char flags; /* private */ - signed char pri; /* the priority */ - - void *data; - eio_cb finish; - void (*destroy)(eio_req *req); /* called when request no longer needed */ - void (*feed)(eio_req *req); /* only used for group requests */ - - EIO_REQ_MEMBERS - - eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */ -}; - -/* _private_ request flags */ -enum { - EIO_FLAG_PTR1_FREE = 0x01, /* need to free(ptr1) */ - EIO_FLAG_PTR2_FREE = 0x02, /* need to free(ptr2) */ - EIO_FLAG_GROUPADD = 0x04 /* some request was added to the group */ -}; - -/* undocumented/unsupported/private helper */ -/*void eio_page_align (void **addr, size_t *length);*/ - -/* returns < 0 on error, errno set - * need_poll, if non-zero, will be called when results are available - * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself). - * done_poll is called when the need to poll is gone. - */ -int eio_init (void (*want_poll)(eio_channel *), void (*done_poll)(eio_channel *)); - -/* initialises a channel */ -void eio_channel_init(eio_channel *, void *data); - -/* must be called regularly to handle pending requests */ -/* returns 0 if all requests were handled, -1 if not, or the value of EIO_FINISH if != 0 */ -int eio_poll (eio_channel *channel); - -/* stop polling if poll took longer than duration seconds */ -void eio_set_max_poll_time (eio_tstamp nseconds); -/* do not handle more then count requests in one call to eio_poll_cb */ -void eio_set_max_poll_reqs (unsigned int nreqs); - -/* set minimum required number - * maximum wanted number - * or maximum idle number of threads */ -void eio_set_min_parallel (unsigned int nthreads); -void eio_set_max_parallel (unsigned int nthreads); -void eio_set_max_idle (unsigned int nthreads); -void eio_set_idle_timeout (unsigned int seconds); - -unsigned int eio_nreqs (void); /* number of requests in-flight */ -unsigned int eio_nready (void); /* number of not-yet handled requests */ -unsigned int eio_npending (void); /* number of finished but unhandled requests */ -unsigned int eio_nthreads (void); /* number of worker threads in use currently */ - -/*****************************************************************************/ -/* convenience wrappers */ - -#ifndef EIO_NO_WRAPPERS -eio_req *eio_nop (int pri, eio_cb cb, void *data, eio_channel *channel); /* does nothing except go through the whole process */ -eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data, eio_channel *channel); /* ties a thread for this long, simulating busyness */ -eio_req *eio_sync (int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_close (int fd, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data, eio_channel *channel); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data, eio_channel *channel); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_fchmod (int fd, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_open (const char *path, int flags, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_chmod (const char *path, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_mkdir (const char *path, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data, eio_channel *channel); /* result=ptr2 allocated dynamically */ -eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); /* result=ptr2 allocated dynamically */ -eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); /* result=ptr2 allocated dynamically */ -eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel); /* stat buffer=ptr2 allocated dynamically */ -eio_req *eio_mknod (const char *path, eio_mode_t mode, dev_t dev, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel); -eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data, eio_channel *channel); -#endif - -/*****************************************************************************/ -/* groups */ - -eio_req *eio_grp (eio_cb cb, void *data, eio_channel *channel); -void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit); -void eio_grp_limit (eio_req *grp, int limit); -void eio_grp_add (eio_req *grp, eio_req *req); -void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */ - -/*****************************************************************************/ -/* request api */ - -/* true if the request was cancelled, useful in the invoke callback */ -#define EIO_CANCELLED(req) ((req)->cancelled) - -#define EIO_RESULT(req) ((req)->result) -/* returns a pointer to the result buffer allocated by eio */ -#define EIO_BUF(req) ((req)->ptr2) -#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req)) -#define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req)) -#define EIO_PATH(req) ((char *)(req)->ptr1) - -/* submit a request for execution */ -void eio_submit (eio_req *req); -/* cancel a request as soon fast as possible, if possible */ -void eio_cancel (eio_req *req); - -/*****************************************************************************/ -/* convenience functions */ - -eio_ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count); -eio_ssize_t eio__pread (int fd, void *buf, size_t count, off_t offset); -eio_ssize_t eio__pwrite (int fd, void *buf, size_t count, off_t offset); - -#ifdef __cplusplus -} -#endif - -#endif - diff --git a/deps/uv/include/uv-private/ngx-queue.h b/deps/uv/include/uv-private/ngx-queue.h index 201107edba..4bd66fc12f 100644 --- a/deps/uv/include/uv-private/ngx-queue.h +++ b/deps/uv/include/uv-private/ngx-queue.h @@ -17,8 +17,11 @@ struct ngx_queue_s { #define ngx_queue_init(q) \ + do { \ (q)->prev = q; \ - (q)->next = q + (q)->next = q; \ + } \ + while (0) #define ngx_queue_empty(h) \ @@ -26,20 +29,26 @@ struct ngx_queue_s { #define ngx_queue_insert_head(h, x) \ + do { \ (x)->next = (h)->next; \ (x)->next->prev = x; \ (x)->prev = h; \ - (h)->next = x + (h)->next = x; \ + } \ + while (0) #define ngx_queue_insert_after ngx_queue_insert_head #define ngx_queue_insert_tail(h, x) \ + do { \ (x)->prev = (h)->prev; \ (x)->prev->next = x; \ (x)->next = h; \ - (h)->prev = x + (h)->prev = x; \ + } \ + while (0) #define ngx_queue_head(h) \ @@ -65,38 +74,50 @@ struct ngx_queue_s { #if defined(NGX_DEBUG) #define ngx_queue_remove(x) \ + do { \ (x)->next->prev = (x)->prev; \ (x)->prev->next = (x)->next; \ (x)->prev = NULL; \ - (x)->next = NULL + (x)->next = NULL; \ + } \ + while (0) #else #define ngx_queue_remove(x) \ + do { \ (x)->next->prev = (x)->prev; \ - (x)->prev->next = (x)->next + (x)->prev->next = (x)->next; \ + } \ + while (0) #endif #define ngx_queue_split(h, q, n) \ + do { \ (n)->prev = (h)->prev; \ (n)->prev->next = n; \ (n)->next = q; \ (h)->prev = (q)->prev; \ (h)->prev->next = h; \ - (q)->prev = n; + (q)->prev = n; \ + } \ + while (0) #define ngx_queue_add(h, n) \ + do { \ (h)->prev->next = (n)->next; \ (n)->next->prev = (h)->prev; \ (h)->prev = (n)->prev; \ - (h)->prev->next = h; + (h)->prev->next = h; \ + } \ + while (0) #define ngx_queue_data(q, type, link) \ - (type *) ((unsigned char *) q - offsetof(type, link)) + ((type *) ((unsigned char *) q - offsetof(type, link))) #define ngx_queue_foreach(q, h) \ diff --git a/deps/uv/include/uv-private/uv-unix.h b/deps/uv/include/uv-private/uv-unix.h index 71aee366c0..f50142c06e 100644 --- a/deps/uv/include/uv-private/uv-unix.h +++ b/deps/uv/include/uv-private/uv-unix.h @@ -25,7 +25,6 @@ #include "ngx-queue.h" #include "ev.h" -#include "eio.h" #include <sys/types.h> #include <sys/stat.h> @@ -54,6 +53,13 @@ struct uv__io_s { ev_io io_watcher; }; +struct uv__work { + void (*work)(struct uv__work *w); + void (*done)(struct uv__work *w); + struct uv_loop_s* loop; + ngx_queue_t wq; +}; + #if defined(__linux__) # include "uv-linux.h" #elif defined(__sun) @@ -100,6 +106,7 @@ typedef pthread_t uv_thread_t; typedef pthread_mutex_t uv_mutex_t; typedef pthread_rwlock_t uv_rwlock_t; typedef UV_PLATFORM_SEM_T uv_sem_t; +typedef pthread_cond_t uv_cond_t; /* Platform-specific definitions for uv_spawn support. */ typedef gid_t uv_gid_t; @@ -115,13 +122,10 @@ typedef struct { #define UV_LOOP_PRIVATE_FIELDS \ unsigned long flags; \ - /* Poll result queue */ \ - eio_channel uv_eio_channel; \ struct ev_loop* ev; \ - /* Various thing for libeio. */ \ - uv_async_t uv_eio_want_poll_notifier; \ - uv_async_t uv_eio_done_poll_notifier; \ - uv_idle_t uv_eio_poller; \ + ngx_queue_t wq; \ + uv_mutex_t wq_mutex; \ + uv_async_t wq_async; \ uv_handle_t* closing_handles; \ ngx_queue_t process_handles[1]; \ ngx_queue_t prepare_handles; \ @@ -233,6 +237,7 @@ typedef struct { uint64_t repeat; #define UV_GETADDRINFO_PRIVATE_FIELDS \ + struct uv__work work_req; \ uv_getaddrinfo_cb cb; \ struct addrinfo* hints; \ char* hostname; \ @@ -245,12 +250,22 @@ typedef struct { int errorno; \ #define UV_FS_PRIVATE_FIELDS \ - struct stat statbuf; \ + const char *new_path; \ uv_file file; \ - eio_req* eio; \ + int flags; \ + mode_t mode; \ + void* buf; \ + size_t len; \ + off_t off; \ + uid_t uid; \ + gid_t gid; \ + double atime; \ + double mtime; \ + struct uv__work work_req; \ + struct stat statbuf; \ #define UV_WORK_PRIVATE_FIELDS \ - eio_req* eio; + struct uv__work work_req; #define UV_TTY_PRIVATE_FIELDS \ struct termios orig_termios; \ diff --git a/deps/uv/include/uv-private/uv-win.h b/deps/uv/include/uv-private/uv-win.h index 132339abb2..78dbb96b7d 100644 --- a/deps/uv/include/uv-private/uv-win.h +++ b/deps/uv/include/uv-private/uv-win.h @@ -171,6 +171,10 @@ typedef int (WSAAPI* LPFN_WSARECVFROM) typedef NTSTATUS *PNTSTATUS; #endif +#ifndef RTL_CONDITION_VARIABLE_INIT + typedef PVOID CONDITION_VARIABLE, *PCONDITION_VARIABLE; +#endif + typedef struct _AFD_POLL_HANDLE_INFO { HANDLE Handle; ULONG Events; @@ -208,6 +212,23 @@ typedef HANDLE uv_sem_t; typedef CRITICAL_SECTION uv_mutex_t; +/* This condition variable implementation is based on the SetEvent solution + * (section 3.2) at http://www.cs.wustl.edu/~schmidt/win32-cv-1.html + * We could not use the SignalObjectAndWait solution (section 3.4) because + * it want the 2nd argument (type uv_mutex_t) of uv_cond_wait() and + * uv_cond_timedwait() to be HANDLEs, but we use CRITICAL_SECTIONs. + */ + +typedef union { + CONDITION_VARIABLE cond_var; + struct { + unsigned int waiters_count; + CRITICAL_SECTION waiters_count_lock; + HANDLE signal_event; + HANDLE broadcast_event; + } fallback; +} uv_cond_t; + typedef union { /* srwlock_ has type SRWLOCK, but not all toolchains define this type in */ /* windows.h. */ diff --git a/deps/uv/include/uv.h b/deps/uv/include/uv.h index 72da68d68b..cebee681f0 100644 --- a/deps/uv/include/uv.h +++ b/deps/uv/include/uv.h @@ -139,11 +139,13 @@ typedef enum { XX(CHECK, check) \ XX(FS_EVENT, fs_event) \ XX(FS_POLL, fs_poll) \ + XX(HANDLE, handle) \ XX(IDLE, idle) \ XX(NAMED_PIPE, pipe) \ XX(POLL, poll) \ XX(PREPARE, prepare) \ XX(PROCESS, process) \ + XX(STREAM, stream) \ XX(TCP, tcp) \ XX(TIMER, timer) \ XX(TTY, tty) \ @@ -151,6 +153,7 @@ typedef enum { XX(SIGNAL, signal) \ #define UV_REQ_TYPE_MAP(XX) \ + XX(REQ, req) \ XX(CONNECT, connect) \ XX(WRITE, write) \ XX(SHUTDOWN, shutdown) \ @@ -209,7 +212,6 @@ typedef struct uv_fs_s uv_fs_t; typedef struct uv_work_s uv_work_t; /* None of the above. */ -typedef struct uv_counters_s uv_counters_t; typedef struct uv_cpu_info_s uv_cpu_info_t; typedef struct uv_interface_address_s uv_interface_address_t; @@ -386,12 +388,11 @@ struct uv_shutdown_s { #define UV_HANDLE_FIELDS \ - /* read-only */ \ - uv_loop_t* loop; \ /* public */ \ uv_close_cb close_cb; \ void* data; \ /* read-only */ \ + uv_loop_t* loop; \ uv_handle_type type; \ /* private */ \ ngx_queue_t handle_queue; \ @@ -607,12 +608,14 @@ UV_EXTERN int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock); /* Enable/disable Nagle's algorithm. */ UV_EXTERN int uv_tcp_nodelay(uv_tcp_t* handle, int enable); -/* Enable/disable TCP keep-alive. +/* + * Enable/disable TCP keep-alive. * - * `ms` is the initial delay in seconds, ignored when `enable` is zero. + * `delay` is the initial delay in seconds, ignored when `enable` is zero. */ -UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle, int enable, - unsigned int delay); +UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle, + int enable, + unsigned int delay); /* * This setting applies to Windows only. @@ -937,8 +940,8 @@ UV_EXTERN uv_handle_type uv_guess_handle(uv_file file); struct uv_pipe_s { UV_HANDLE_FIELDS UV_STREAM_FIELDS - UV_PIPE_PRIVATE_FIELDS int ipc; /* non-zero if this pipe is used for passing handles */ + UV_PIPE_PRIVATE_FIELDS }; /* @@ -1564,16 +1567,6 @@ struct uv_fs_poll_s { UV_HANDLE_FIELDS /* Private, don't touch. */ void* poll_ctx; - /* v0.8 ABI compatibility */ - char padding[sizeof(int) - + sizeof(unsigned int) - + sizeof(uint64_t) - + sizeof(char*) - + sizeof(uv_fs_poll_cb) - + sizeof(uv_timer_t) - + sizeof(uv_fs_t*) - + sizeof(uv_statbuf_t) - - sizeof(void*)]; }; UV_EXTERN int uv_fs_poll_init(uv_loop_t* loop, uv_fs_poll_t* handle); @@ -1637,8 +1630,8 @@ UV_EXTERN int uv_fs_poll_stop(uv_fs_poll_t* handle); struct uv_signal_s { UV_HANDLE_FIELDS uv_signal_cb signal_cb; - UV_SIGNAL_PRIVATE_FIELDS int signum; + UV_SIGNAL_PRIVATE_FIELDS }; /* These functions are no-ops on Windows. */ @@ -1799,6 +1792,36 @@ UV_EXTERN void uv_sem_post(uv_sem_t* sem); UV_EXTERN void uv_sem_wait(uv_sem_t* sem); UV_EXTERN int uv_sem_trywait(uv_sem_t* sem); +/* + * Same goes for the condition variable functions. + */ +UV_EXTERN int uv_cond_init(uv_cond_t* cond); +UV_EXTERN void uv_cond_destroy(uv_cond_t* cond); +UV_EXTERN void uv_cond_signal(uv_cond_t* cond); +UV_EXTERN void uv_cond_broadcast(uv_cond_t* cond); +/* Waits on a condition variable without a timeout. + * + * Note: + * 1. callers should be prepared to deal with spurious wakeups. + */ +UV_EXTERN void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex); +/* Waits on a condition variable with a timeout in nano seconds. + * Returns 0 for success or -1 on timeout, * aborts when other errors happen. + * + * Note: + * 1. callers should be prepared to deal with spurious wakeups. + * 2. the granularity of timeout on Windows is never less than one millisecond. + * 3. uv_cond_timedwait takes a relative timeout, not an absolute time. + * 4. the precision of timeout on OSX is never less than one microsecond. + * Here is the reason. + * OSX doesn't support CLOCK_MONOTONIC nor pthread_condattr_setclock() + * (see man pthread_cond_init on OSX). + * An example in man pthread_cond_timedwait on OSX uses gettimeofday() + * and its resolution is a microsecond. + */ +UV_EXTERN int uv_cond_timedwait(uv_cond_t* cond, uv_mutex_t* mutex, + uint64_t timeout); + /* Runs a function once and only once. Concurrent calls to uv_once() with the * same guard will block all callers except one (it's unspecified which one). * The guard should be initialized statically with the UV_ONCE_INIT macro. @@ -1841,37 +1864,16 @@ union uv_any_req { }; -struct uv_counters_s { - uint64_t async_init; - uint64_t check_init; - uint64_t eio_init; - uint64_t fs_event_init; - uint64_t fs_poll_init; - uint64_t handle_init; - uint64_t idle_init; - uint64_t pipe_init; - uint64_t poll_init; - uint64_t prepare_init; - uint64_t process_init; - uint64_t req_init; - uint64_t stream_init; - uint64_t tcp_init; - uint64_t timer_init; - uint64_t tty_init; - uint64_t udp_init; -}; - - struct uv_loop_s { - UV_LOOP_PRIVATE_FIELDS + /* User data - use this for whatever. */ + void* data; /* The last error */ uv_err_t last_err; /* Loop reference counting */ unsigned int active_handles; ngx_queue_t handle_queue; ngx_queue_t active_reqs; - /* User data - use this for whatever. */ - void* data; + UV_LOOP_PRIVATE_FIELDS }; diff --git a/deps/uv/src/fs-poll.c b/deps/uv/src/fs-poll.c index f71aa842ee..b5b344b920 100644 --- a/deps/uv/src/fs-poll.c +++ b/deps/uv/src/fs-poll.c @@ -103,11 +103,15 @@ int uv_fs_poll_stop(uv_fs_poll_t* handle) { ctx = handle->poll_ctx; assert(ctx != NULL); assert(ctx->parent_handle != NULL); - ctx->parent_handle = NULL; - uv_timer_stop(&ctx->timer_handle); - handle->poll_ctx = NULL; + + /* Close the timer if it's active. If it's inactive, there's a stat request + * in progress and poll_cb will take care of the cleanup. + */ + if (uv__is_active(&ctx->timer_handle)) + uv_close((uv_handle_t*)&ctx->timer_handle, timer_close_cb); + uv__handle_stop(handle); return 0; @@ -123,12 +127,7 @@ static void timer_cb(uv_timer_t* timer, int status) { struct poll_ctx* ctx; ctx = container_of(timer, struct poll_ctx, timer_handle); - - if (ctx->parent_handle == NULL) { /* handle has been stopped or closed */ - uv_close((uv_handle_t*)&ctx->timer_handle, timer_close_cb); - return; - } - + assert(ctx->parent_handle != NULL); assert(ctx->parent_handle->poll_ctx == ctx); ctx->start_time = uv_now(ctx->loop); @@ -171,6 +170,11 @@ static void poll_cb(uv_fs_t* req) { out: uv_fs_req_cleanup(req); + if (ctx->parent_handle == NULL) { /* handle has been stopped by callback */ + uv_close((uv_handle_t*)&ctx->timer_handle, timer_close_cb); + return; + } + /* Reschedule timer, subtract the delay from doing the stat(). */ interval = ctx->interval; interval -= (uv_now(ctx->loop) - ctx->start_time) % interval; diff --git a/deps/uv/src/unix/core.c b/deps/uv/src/unix/core.c index 3ad63f1f8e..2237070896 100644 --- a/deps/uv/src/unix/core.c +++ b/deps/uv/src/unix/core.c @@ -299,134 +299,6 @@ int uv_is_active(const uv_handle_t* handle) { } -static int uv_getaddrinfo_done(eio_req* req_) { - uv_getaddrinfo_t* req = req_->data; - struct addrinfo *res = req->res; -#if __sun - size_t hostlen = strlen(req->hostname); -#endif - - req->res = NULL; - - uv__req_unregister(req->loop, req); - - /* see initialization in uv_getaddrinfo() */ - if (req->hints) - free(req->hints); - else if (req->service) - free(req->service); - else if (req->hostname) - free(req->hostname); - else - assert(0); - - if (req->retcode == 0) { - /* OK */ -#if EAI_NODATA /* FreeBSD deprecated EAI_NODATA */ - } else if (req->retcode == EAI_NONAME || req->retcode == EAI_NODATA) { -#else - } else if (req->retcode == EAI_NONAME) { -#endif - uv__set_sys_error(req->loop, ENOENT); /* FIXME compatibility hack */ -#if __sun - } else if (req->retcode == EAI_MEMORY && hostlen >= MAXHOSTNAMELEN) { - uv__set_sys_error(req->loop, ENOENT); -#endif - } else { - req->loop->last_err.code = UV_EADDRINFO; - req->loop->last_err.sys_errno_ = req->retcode; - } - - req->cb(req, req->retcode, res); - - return 0; -} - - -static void getaddrinfo_thread_proc(eio_req *req_) { - uv_getaddrinfo_t* req = req_->data; - - req->retcode = getaddrinfo(req->hostname, - req->service, - req->hints, - &req->res); -} - - -int uv_getaddrinfo(uv_loop_t* loop, - uv_getaddrinfo_t* req, - uv_getaddrinfo_cb cb, - const char* hostname, - const char* service, - const struct addrinfo* hints) { - size_t hostname_len; - size_t service_len; - size_t hints_len; - eio_req* req_; - size_t len; - char* buf; - - if (req == NULL || cb == NULL || (hostname == NULL && service == NULL)) - return uv__set_artificial_error(loop, UV_EINVAL); - - uv_eio_init(loop); - - hostname_len = hostname ? strlen(hostname) + 1 : 0; - service_len = service ? strlen(service) + 1 : 0; - hints_len = hints ? sizeof(*hints) : 0; - buf = malloc(hostname_len + service_len + hints_len); - - if (buf == NULL) - return uv__set_artificial_error(loop, UV_ENOMEM); - - uv__req_init(loop, req, UV_GETADDRINFO); - req->loop = loop; - req->cb = cb; - req->res = NULL; - req->hints = NULL; - req->service = NULL; - req->hostname = NULL; - req->retcode = 0; - - /* order matters, see uv_getaddrinfo_done() */ - len = 0; - - if (hints) { - req->hints = memcpy(buf + len, hints, sizeof(*hints)); - len += sizeof(*hints); - } - - if (service) { - req->service = memcpy(buf + len, service, service_len); - len += service_len; - } - - if (hostname) { - req->hostname = memcpy(buf + len, hostname, hostname_len); - len += hostname_len; - } - - req_ = eio_custom(getaddrinfo_thread_proc, - EIO_PRI_DEFAULT, - uv_getaddrinfo_done, - req, - &loop->uv_eio_channel); - - if (req_) - return 0; - - free(buf); - - return uv__set_artificial_error(loop, UV_ENOMEM); -} - - -void uv_freeaddrinfo(struct addrinfo* ai) { - if (ai) - freeaddrinfo(ai); -} - - /* Open a socket in non-blocking close-on-exec mode, atomically if possible. */ int uv__socket(int domain, int type, int protocol) { int sockfd; diff --git a/deps/uv/src/unix/eio/Changes b/deps/uv/src/unix/eio/Changes deleted file mode 100644 index 9d3e3231c1..0000000000 --- a/deps/uv/src/unix/eio/Changes +++ /dev/null @@ -1,63 +0,0 @@ -Revision history for libeio - -TODO: maybe add mincore support? available on at least darwin, solaris, linux, freebsd -TODO: openbsd requires stdint.h for intptr_t - why posix? - -TODO: make mtouch/readdir maybe others cancellable in-request -TODO: fadvise request -1.0 - - fix a deadlock where a wakeup signal could be missed when - a timeout occured at the same time. - - use nonstandard but maybe-working-on-bsd fork technique. - - use fewer time() syscalls when waiting for new requests. - - fix a path-memory-leak in readdir when using the wrappers - (reported by Thomas L. Shinnick). - - support a max_idle value of 0. - - support setting of idle timeout value (eio_set_idle_timeout). - - readdir: correctly handle malloc failures. - - readdir: new flags argument, can return inode - and possibly filetype, can sort in various ways. - - readdir: stop immediately when cancelled, do - not continue reading the directory. - - fix return value of eio_sendfile_sync. - - include sys/mman.h for msync. - - added EIO_STACKSIZE. - - added msync, mtouch support (untested). - - added sync_file_range (untested). - - fixed custom support. - - use a more robust feed-add detection method. - - "outbundled" from IO::AIO. - - eio_set_max_polltime did not properly convert time to ticks. - - tentatively support darwin in sendfile. - - fix freebsd/darwin sendfile. - - also use sendfile emulation for ENOTSUP and EOPNOTSUPP - error codes. - - add OS-independent EIO_MT_* and EIO_MS_* flag enums. - - add eio_statvfs/eio_fstatvfs. - - add eio_mlock/eio_mlockall and OS-independent MCL_* flag enums. - - no longer set errno to 0 before making syscalls, this only lures - people into the trap of believing errno shows success or failure. - - "fix" demo.c so that it works as non-root. - - suppoert utimes seperately from futimes, as some systems have - utimes but not futimes. - - use _POSIX_MEMLOCK_RANGE for mlock. - - do not (errornously) overwrite CFLAGS in configure.ac. - - mknod used int3 for dev_t (§2 bit), not offs (64 bit). - - fix memory corruption in eio_readdirx for the flags - combination EIO_READDIR_STAT_ORDER | EIO_READDIR_DIRS_FIRST. - - port to openbsd (another blatantly broken non-UNIX/POSIX platform). - - fix eio_custom prototype. - - work around a Linux (and likely FreeBSD and other kernels) bug - where sendfile would not transfer all the requested bytes on - large transfers, using a heuristic. - - use libecb, and apply lots of minor space optimisations. - - disable sendfile on darwin, broken as everything else. - - add realpath request and implementation. - - cancelled requests will still invoke their request callbacks. - - add fallocate. - - do not acquire any locks when forking. - - incorporated some mingw32 changes by traviscline. - - added syncfs support, using direct syscall. - - set thread name on linux (ps -L/Hcx, top, gdb). - - remove useless use of volatile variables. - diff --git a/deps/uv/src/unix/eio/LICENSE b/deps/uv/src/unix/eio/LICENSE deleted file mode 100644 index 1ed1324d30..0000000000 --- a/deps/uv/src/unix/eio/LICENSE +++ /dev/null @@ -1,36 +0,0 @@ -All files in libeio are Copyright (C)2007,2008 Marc Alexander Lehmann. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - * Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following - disclaimer in the documentation and/or other materials provided - with the distribution. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -Alternatively, the contents of this package may be used under the terms -of the GNU General Public License ("GPL") version 2 or any later version, -in which case the provisions of the GPL are applicable instead of the -above. If you wish to allow the use of your version of this package only -under the terms of the GPL and not to allow others to use your version of -this file under the BSD license, indicate your decision by deleting the -provisions above and replace them with the notice and other provisions -required by the GPL in this and the other files of this package. If you do -not delete the provisions above, a recipient may use your version of this -file under either the BSD or the GPL. diff --git a/deps/uv/src/unix/eio/Makefile.am b/deps/uv/src/unix/eio/Makefile.am deleted file mode 100644 index e9866c0d5e..0000000000 --- a/deps/uv/src/unix/eio/Makefile.am +++ /dev/null @@ -1,15 +0,0 @@ -AUTOMAKE_OPTIONS = foreign no-dependencies - -VERSION_INFO = 1:0 - -EXTRA_DIST = LICENSE Changes autogen.sh - -#man_MANS = ev.3 - -include_HEADERS = eio.h - -lib_LTLIBRARIES = libeio.la - -libeio_la_SOURCES = eio.c ecb.h xthread.h config.h -libeio_la_LDFLAGS = -version-info $(VERSION_INFO) - diff --git a/deps/uv/src/unix/eio/aclocal.m4 b/deps/uv/src/unix/eio/aclocal.m4 deleted file mode 100644 index 18abb73686..0000000000 --- a/deps/uv/src/unix/eio/aclocal.m4 +++ /dev/null @@ -1,8957 +0,0 @@ -# generated automatically by aclocal 1.11.1 -*- Autoconf -*- - -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -m4_ifndef([AC_AUTOCONF_VERSION], - [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl -m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.67],, -[m4_warning([this file was generated for autoconf 2.67. -You have another version of autoconf. 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then - _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' - - _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions], - lt_cv_prog_compiler_rtti_exceptions, - [-fno-rtti -fno-exceptions], [], - [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"]) -fi -_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1], - [Compiler flag to turn off builtin functions]) -])# _LT_COMPILER_NO_RTTI - - -# _LT_CMD_GLOBAL_SYMBOLS -# ---------------------- -m4_defun([_LT_CMD_GLOBAL_SYMBOLS], -[AC_REQUIRE([AC_CANONICAL_HOST])dnl -AC_REQUIRE([AC_PROG_CC])dnl -AC_REQUIRE([LT_PATH_NM])dnl -AC_REQUIRE([LT_PATH_LD])dnl -m4_require([_LT_DECL_SED])dnl -m4_require([_LT_DECL_EGREP])dnl -m4_require([_LT_TAG_COMPILER])dnl - -# Check for command to grab the raw symbol name followed by C symbol from nm. -AC_MSG_CHECKING([command to parse $NM output from $compiler object]) -AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe], -[ -# These are sane defaults that work on at least a few old systems. -# [They come from Ultrix. 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- void *address; -} -lt__PROGRAM__LTX_preloaded_symbols[[]] = -{ - { "@PROGRAM@", (void *) 0 }, -_LT_EOF - $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext - cat <<\_LT_EOF >> conftest.$ac_ext - {0, (void *) 0} -}; - -/* This works around a problem in FreeBSD linker */ -#ifdef FREEBSD_WORKAROUND -static const void *lt_preloaded_setup() { - return lt__PROGRAM__LTX_preloaded_symbols; -} -#endif - -#ifdef __cplusplus -} -#endif -_LT_EOF - # Now try linking the two files. - mv conftest.$ac_objext conftstm.$ac_objext - lt_save_LIBS="$LIBS" - lt_save_CFLAGS="$CFLAGS" - LIBS="conftstm.$ac_objext" - CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)" - if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then - pipe_works=yes - fi - LIBS="$lt_save_LIBS" - CFLAGS="$lt_save_CFLAGS" - else - echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD - fi - else - echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD - fi - else - echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD - fi - else - echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD - cat conftest.$ac_ext >&5 - fi - rm -rf conftest* conftst* - - # Do not use the global_symbol_pipe unless it works. - if test "$pipe_works" = yes; 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Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#undef HAVE_DLFCN_H - -/* fdatasync(2) is available */ -#undef HAVE_FDATASYNC - -/* futimes(2) is available */ -#undef HAVE_FUTIMES - -/* Define to 1 if you have the <inttypes.h> header file. */ -#undef HAVE_INTTYPES_H - -/* Define to 1 if you have the <memory.h> header file. */ -#undef HAVE_MEMORY_H - -/* posix_fadvise(2) is available */ -#undef HAVE_POSIX_FADVISE - -/* posix_madvise(2) is available */ -#undef HAVE_POSIX_MADVISE - -/* pread(2) and pwrite(2) are available */ -#undef HAVE_PREADWRITE - -/* readahead(2) is available (linux) */ -#undef HAVE_READAHEAD - -/* sendfile(2) is available and supported */ -#undef HAVE_SENDFILE - -/* Define to 1 if you have the <stdint.h> header file. */ -#undef HAVE_STDINT_H - -/* Define to 1 if you have the <stdlib.h> header file. */ -#undef HAVE_STDLIB_H - -/* Define to 1 if you have the <strings.h> header file. */ -#undef HAVE_STRINGS_H - -/* Define to 1 if you have the <string.h> header file. */ -#undef HAVE_STRING_H - -/* sync_file_range(2) is available */ -#undef HAVE_SYNC_FILE_RANGE - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#undef HAVE_SYS_STAT_H - -/* Define to 1 if you have the <sys/types.h> header file. */ -#undef HAVE_SYS_TYPES_H - -/* Define to 1 if you have the <unistd.h> header file. */ -#undef HAVE_UNISTD_H - -/* utimes(2) is available */ -#undef HAVE_UTIMES - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#undef LT_OBJDIR - -/* Name of package */ -#undef PACKAGE - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the home page for this package. */ -#undef PACKAGE_URL - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Define to 1 if you have the ANSI C header files. */ -#undef STDC_HEADERS diff --git a/deps/uv/src/unix/eio/config_aix.h b/deps/uv/src/unix/eio/config_aix.h deleted file mode 100644 index 9e21e53da8..0000000000 --- a/deps/uv/src/unix/eio/config_aix.h +++ /dev/null @@ -1,84 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -/* #undef HAVE_FDATASYNC */ - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* futimes(2) is available */ -/* #undef HAVE_FUTIMES */ - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -/* #undef HAVE_SENDFILE */ - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/src/unix/eio/config_cygwin.h b/deps/uv/src/unix/eio/config_cygwin.h deleted file mode 100644 index f64e7fe441..0000000000 --- a/deps/uv/src/unix/eio/config_cygwin.h +++ /dev/null @@ -1,80 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -#define HAVE_FDATASYNC 1 - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -/* #undef HAVE_SENDFILE */ - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/src/unix/eio/config_darwin.h b/deps/uv/src/unix/eio/config_darwin.h deleted file mode 100644 index f406759e09..0000000000 --- a/deps/uv/src/unix/eio/config_darwin.h +++ /dev/null @@ -1,141 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fallocate(2) is available */ -/* #undef HAVE_FALLOCATE */ - -/* fdatasync(2) is available */ -#if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1060 -#define HAVE_FDATASYNC 1 -#else -#define HAVE_FDATASYNC 0 -#endif - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* posix_fadvise(2) is available */ -/* #undef HAVE_POSIX_FADVISE */ - -/* posix_madvise(2) is available */ -#define HAVE_POSIX_MADVISE 1 - -/* prctl(PR_SET_NAME) is available */ -/* #undef HAVE_PRCTL_SET_NAME */ - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 1 - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/prctl.h> header file. */ -/* #undef HAVE_SYS_PRCTL_H */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* syscall(__NR_syncfs) is available */ -/* #undef HAVE_SYS_SYNCFS */ - -/* Define to 1 if you have the <sys/syscall.h> header file. */ -#define HAVE_SYS_SYSCALL_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Enable extensions on AIX 3, Interix. */ -#ifndef _ALL_SOURCE -# define _ALL_SOURCE 1 -#endif -/* Enable GNU extensions on systems that have them. */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -#endif -/* Enable threading extensions on Solaris. */ -#ifndef _POSIX_PTHREAD_SEMANTICS -# define _POSIX_PTHREAD_SEMANTICS 1 -#endif -/* Enable extensions on HP NonStop. */ -#ifndef _TANDEM_SOURCE -# define _TANDEM_SOURCE 1 -#endif -/* Enable general extensions on Solaris. */ -#ifndef __EXTENSIONS__ -# define __EXTENSIONS__ 1 -#endif - - -/* Version number of package */ -#define VERSION "1.0" - -/* Define to 1 if on MINIX. */ -/* #undef _MINIX */ - -/* Define to 2 if the system does not provide POSIX.1 features except with - this defined. */ -/* #undef _POSIX_1_SOURCE */ - -/* Define to 1 if you need to in order for `stat' and other things to work. */ -/* #undef _POSIX_SOURCE */ diff --git a/deps/uv/src/unix/eio/config_freebsd.h b/deps/uv/src/unix/eio/config_freebsd.h deleted file mode 100644 index 3c93d260f7..0000000000 --- a/deps/uv/src/unix/eio/config_freebsd.h +++ /dev/null @@ -1,81 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -/* #undef HAVE_FDATASYNC */ - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 1 - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/src/unix/eio/config_linux.h b/deps/uv/src/unix/eio/config_linux.h deleted file mode 100644 index e7a0d6e7ae..0000000000 --- a/deps/uv/src/unix/eio/config_linux.h +++ /dev/null @@ -1,94 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -#include <linux/version.h> -#include <features.h> - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -#define HAVE_FDATASYNC 1 - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* futimes(2) is available but we make the syscall directly. */ -#undef HAVE_FUTIMES - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -#define HAVE_READAHEAD 1 - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 1 - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available if kernel >= 2.6.17 and glibc >= 2.6 */ -#if LINUX_VERSION_CODE >= 0x020611 && __GLIBC_PREREQ(2, 6) -#define HAVE_SYNC_FILE_RANGE 1 -#else -#define HAVE_SYNC_FILE_RANGE 0 -#endif - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <sys/syscall.h> header file. */ -#define HAVE_SYS_SYSCALL_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/src/unix/eio/config_netbsd.h b/deps/uv/src/unix/eio/config_netbsd.h deleted file mode 100644 index 31f18e6046..0000000000 --- a/deps/uv/src/unix/eio/config_netbsd.h +++ /dev/null @@ -1,81 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -/* #undef HAVE_FDATASYNC */ - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -#define HAVE_SENDFILE 0 - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/src/unix/eio/config_openbsd.h b/deps/uv/src/unix/eio/config_openbsd.h deleted file mode 100644 index a73b8a8830..0000000000 --- a/deps/uv/src/unix/eio/config_openbsd.h +++ /dev/null @@ -1,137 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fallocate(2) is available */ -/* #undef HAVE_FALLOCATE */ - -/* fdatasync(2) is available */ -/* #undef HAVE_FDATASYNC */ - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* posix_fadvise(2) is available */ -/* #undef HAVE_POSIX_FADVISE */ - -/* posix_madvise(2) is available */ -#define HAVE_POSIX_MADVISE 1 - -/* prctl(PR_SET_NAME) is available */ -/* #undef HAVE_PRCTL_SET_NAME */ - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -/* #undef HAVE_SENDFILE */ - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/prctl.h> header file. */ -/* #undef HAVE_SYS_PRCTL_H */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* syscall(__NR_syncfs) is available */ -/* #undef HAVE_SYS_SYNCFS */ - -/* Define to 1 if you have the <sys/syscall.h> header file. */ -#define HAVE_SYS_SYSCALL_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Enable extensions on AIX 3, Interix. */ -#ifndef _ALL_SOURCE -# define _ALL_SOURCE 1 -#endif -/* Enable GNU extensions on systems that have them. */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -#endif -/* Enable threading extensions on Solaris. */ -#ifndef _POSIX_PTHREAD_SEMANTICS -# define _POSIX_PTHREAD_SEMANTICS 1 -#endif -/* Enable extensions on HP NonStop. */ -#ifndef _TANDEM_SOURCE -# define _TANDEM_SOURCE 1 -#endif -/* Enable general extensions on Solaris. */ -#ifndef __EXTENSIONS__ -# define __EXTENSIONS__ 1 -#endif - - -/* Version number of package */ -#define VERSION "1.0" - -/* Define to 1 if on MINIX. */ -/* #undef _MINIX */ - -/* Define to 2 if the system does not provide POSIX.1 features except with - this defined. */ -/* #undef _POSIX_1_SOURCE */ - -/* Define to 1 if you need to in order for `stat' and other things to work. */ -/* #undef _POSIX_SOURCE */ diff --git a/deps/uv/src/unix/eio/config_sunos.h b/deps/uv/src/unix/eio/config_sunos.h deleted file mode 100644 index 546926fcb5..0000000000 --- a/deps/uv/src/unix/eio/config_sunos.h +++ /dev/null @@ -1,84 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the <dlfcn.h> header file. */ -#define HAVE_DLFCN_H 1 - -/* fdatasync(2) is available */ -#define HAVE_FDATASYNC 1 - -/* utimes(2) is available */ -#define HAVE_UTIMES 1 - -/* futimes(2) is available */ -#define HAVE_FUTIMES 1 - -/* Define to 1 if you have the <inttypes.h> header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the <memory.h> header file. */ -#define HAVE_MEMORY_H 1 - -/* pread(2) and pwrite(2) are available */ -#define HAVE_PREADWRITE 1 - -/* readahead(2) is available (linux) */ -/* #undef HAVE_READAHEAD */ - -/* sendfile(2) is available and supported */ -/* #undef HAVE_SENDFILE */ - -/* Define to 1 if you have the <stdint.h> header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the <stdlib.h> header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the <strings.h> header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the <string.h> header file. */ -#define HAVE_STRING_H 1 - -/* sync_file_range(2) is available */ -/* #undef HAVE_SYNC_FILE_RANGE */ - -/* Define to 1 if you have the <sys/stat.h> header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the <sys/types.h> header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if you have the <unistd.h> header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Name of package */ -#define PACKAGE "libeio" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "" - -/* Define to the home page for this package. */ -#define PACKAGE_URL "" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Version number of package */ -#define VERSION "1.0" diff --git a/deps/uv/src/unix/eio/configure.ac b/deps/uv/src/unix/eio/configure.ac deleted file mode 100644 index 9faffad538..0000000000 --- a/deps/uv/src/unix/eio/configure.ac +++ /dev/null @@ -1,22 +0,0 @@ -AC_PREREQ(2.59) -AC_INIT -AC_CONFIG_SRCDIR([eio.h]) -AC_CONFIG_HEADERS([config.h]) - -AM_INIT_AUTOMAKE(libeio,1.0) -AM_MAINTAINER_MODE - -AC_GNU_SOURCE - -AC_PROG_LIBTOOL - -AC_PROG_CC - -if test "x$GCC" = xyes ; then - CFLAGS="-O3 $CFLAGS" -fi - -m4_include([libeio.m4]) - -AC_CONFIG_FILES([Makefile]) -AC_OUTPUT diff --git a/deps/uv/src/unix/eio/demo.c b/deps/uv/src/unix/eio/demo.c deleted file mode 100644 index cbef59557f..0000000000 --- a/deps/uv/src/unix/eio/demo.c +++ /dev/null @@ -1,194 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <poll.h> -#include <string.h> -#include <assert.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/stat.h> - -#include "eio.h" - -int respipe [2]; - -void -want_poll (void) -{ - char dummy; - printf ("want_poll ()\n"); - write (respipe [1], &dummy, 1); -} - -void -done_poll (void) -{ - char dummy; - printf ("done_poll ()\n"); - read (respipe [0], &dummy, 1); -} - -void -event_loop (void) -{ - // an event loop. yeah. - struct pollfd pfd; - pfd.fd = respipe [0]; - pfd.events = POLLIN; - - printf ("\nentering event loop\n"); - while (eio_nreqs ()) - { - poll (&pfd, 1, -1); - printf ("eio_poll () = %d\n", eio_poll ()); - } - printf ("leaving event loop\n"); -} - -int -res_cb (eio_req *req) -{ - printf ("res_cb(%d|%s) = %d\n", req->type, req->data ? req->data : "?", EIO_RESULT (req)); - - if (req->result < 0) - abort (); - - return 0; -} - -int -readdir_cb (eio_req *req) -{ - char *buf = (char *)EIO_BUF (req); - - printf ("readdir_cb = %d\n", EIO_RESULT (req)); - - if (EIO_RESULT (req) < 0) - return 0; - - while (EIO_RESULT (req)--) - { - printf ("readdir = <%s>\n", buf); - buf += strlen (buf) + 1; - } - - return 0; -} - -int -stat_cb (eio_req *req) -{ - struct stat *buf = EIO_STAT_BUF (req); - - if (req->type == EIO_FSTAT) - printf ("fstat_cb = %d\n", EIO_RESULT (req)); - else - printf ("stat_cb(%s) = %d\n", EIO_PATH (req), EIO_RESULT (req)); - - if (!EIO_RESULT (req)) - printf ("stat size %d perm 0%o\n", buf->st_size, buf->st_mode & 0777); - - return 0; -} - -int -read_cb (eio_req *req) -{ - unsigned char *buf = (unsigned char *)EIO_BUF (req); - - printf ("read_cb = %d (%02x%02x%02x%02x %02x%02x%02x%02x)\n", - EIO_RESULT (req), - buf [0], buf [1], buf [2], buf [3], - buf [4], buf [5], buf [6], buf [7]); - - return 0; -} - -int last_fd; - -int -open_cb (eio_req *req) -{ - printf ("open_cb = %d\n", EIO_RESULT (req)); - - last_fd = EIO_RESULT (req); - - return 0; -} - -int -main (void) -{ - printf ("pipe ()\n"); - if (pipe (respipe)) abort (); - - printf ("eio_init ()\n"); - if (eio_init (want_poll, done_poll)) abort (); - - do - { - /* avoid relative paths yourself(!) */ - eio_mkdir ("eio-test-dir", 0777, 0, res_cb, "mkdir"); - eio_nop (0, res_cb, "nop"); - event_loop (); - - eio_stat ("eio-test-dir", 0, stat_cb, "stat"); - eio_lstat ("eio-test-dir", 0, stat_cb, "stat"); - eio_open ("eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, 0, open_cb, "open"); - eio_symlink ("test", "eio-test-dir/eio-symlink", 0, res_cb, "symlink"); - eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, 0, res_cb, "mknod"); - event_loop (); - - eio_utime ("eio-test-dir", 12345.678, 23456.789, 0, res_cb, "utime"); - eio_futime (last_fd, 92345.678, 93456.789, 0, res_cb, "futime"); - eio_chown ("eio-test-dir", getuid (), getgid (), 0, res_cb, "chown"); - eio_fchown (last_fd, getuid (), getgid (), 0, res_cb, "fchown"); - eio_fchmod (last_fd, 0723, 0, res_cb, "fchmod"); - eio_readdir ("eio-test-dir", 0, 0, readdir_cb, "readdir"); - eio_readdir ("/nonexistant", 0, 0, readdir_cb, "readdir"); - eio_fstat (last_fd, 0, stat_cb, "stat"); - eio_write (last_fd, "test\nfail\n", 10, 4, 0, res_cb, "write"); - event_loop (); - - eio_read (last_fd, 0, 8, 0, EIO_PRI_DEFAULT, read_cb, "read"); - eio_readlink ("eio-test-dir/eio-symlink", 0, res_cb, "readlink"); - event_loop (); - - eio_dup2 (1, 2, EIO_PRI_DEFAULT, res_cb, "dup"); // dup stdout to stderr - eio_chmod ("eio-test-dir", 0765, 0, res_cb, "chmod"); - eio_ftruncate (last_fd, 9, 0, res_cb, "ftruncate"); - eio_fdatasync (last_fd, 0, res_cb, "fdatasync"); - eio_fsync (last_fd, 0, res_cb, "fsync"); - eio_sync (0, res_cb, "sync"); - eio_busy (0.5, 0, res_cb, "busy"); - event_loop (); - - eio_sendfile (1, last_fd, 4, 5, 0, res_cb, "sendfile"); // write "test\n" to stdout - eio_fstat (last_fd, 0, stat_cb, "stat"); - event_loop (); - - eio_truncate ("eio-test-dir/eio-test-file", 6, 0, res_cb, "truncate"); - eio_readahead (last_fd, 0, 64, 0, res_cb, "readahead"); - event_loop (); - - eio_close (last_fd, 0, res_cb, "close"); - eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", 0, res_cb, "link"); - event_loop (); - - eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", 0, res_cb, "rename"); - event_loop (); - - eio_unlink ("eio-test-dir/eio-fifo", 0, res_cb, "unlink"); - eio_unlink ("eio-test-dir/eio-symlink", 0, res_cb, "unlink"); - eio_unlink ("eio-test-dir/eio-test-file-2", 0, res_cb, "unlink"); - eio_unlink ("eio-test-dir/eio-test-file-renamed", 0, res_cb, "unlink"); - event_loop (); - - eio_rmdir ("eio-test-dir", 0, res_cb, "rmdir"); - event_loop (); - } - while (0); - - return 0; -} - diff --git a/deps/uv/src/unix/eio/ecb.h b/deps/uv/src/unix/eio/ecb.h deleted file mode 100644 index a4aabc1091..0000000000 --- a/deps/uv/src/unix/eio/ecb.h +++ /dev/null @@ -1,370 +0,0 @@ -/* - * libecb - http://software.schmorp.de/pkg/libecb - * - * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> - * Copyright (©) 2011 Emanuele Giaquinta - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef ECB_H -#define ECB_H - -#ifdef _WIN32 - typedef signed char int8_t; - typedef unsigned char uint8_t; - typedef signed short int16_t; - typedef unsigned short uint16_t; - typedef signed int int32_t; - typedef unsigned int uint32_t; - #if __GNUC__ - typedef signed long long int64_t; - typedef unsigned long long uint64_t; - #else /* _MSC_VER || __BORLANDC__ */ - typedef signed __int64 int64_t; - typedef unsigned __int64 uint64_t; - #endif -#else - #include <inttypes.h> -#endif - -/* many compilers define _GNUC_ to some versions but then only implement - * what their idiot authors think are the "more important" extensions, - * causing enourmous grief in return for some better fake benchmark numbers. - * or so. - * we try to detect these and simply assume they are not gcc - if they have - * an issue with that they should have done it right in the first place. - */ -#ifndef ECB_GCC_VERSION - #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) - #define ECB_GCC_VERSION(major,minor) 0 - #else - #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) - #endif -#endif - -/*****************************************************************************/ - -#ifndef ECB_MEMORY_FENCE - #if ECB_GCC_VERSION(2,5) - #if defined(__x86) || defined(__i386) - #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") - #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ - #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ - #elif __amd64 - #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") - #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") - #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ - #endif - #endif -#endif - -#ifndef ECB_MEMORY_FENCE - #if ECB_GCC_VERSION(4,4) - #define ECB_MEMORY_FENCE __sync_synchronize () - #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) - #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) - #elif _MSC_VER >= 1400 /* VC++ 2005 */ - #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) - #define ECB_MEMORY_FENCE _ReadWriteBarrier () - #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ - #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () - #elif defined(_WIN32) - #include <WinNT.h> - #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ - #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE - #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE - #endif -#endif - -#ifndef ECB_MEMORY_FENCE - /* - * if you get undefined symbol references to pthread_mutex_lock, - * or failure to find pthread.h, then you should implement - * the ECB_MEMORY_FENCE operations for your cpu/compiler - * OR proide pthread.h and link against the posix thread library - * of your system. - */ - #include <pthread.h> - - static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; - #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) - #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE - #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE -#endif - -/*****************************************************************************/ - -#define ECB_C99 (__STDC_VERSION__ >= 199901L) - -#if __cplusplus - #define ecb_inline static inline -#elif ECB_GCC_VERSION(2,5) - #define ecb_inline static __inline__ -#elif ECB_C99 - #define ecb_inline static inline -#else - #define ecb_inline static -#endif - -#if ECB_GCC_VERSION(3,3) - #define ecb_restrict __restrict__ -#elif ECB_C99 - #define ecb_restrict restrict -#else - #define ecb_restrict -#endif - -typedef int ecb_bool; - -#define ECB_CONCAT_(a, b) a ## b -#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) -#define ECB_STRINGIFY_(a) # a -#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) - -#define ecb_function_ ecb_inline - -#if ECB_GCC_VERSION(3,1) - #define ecb_attribute(attrlist) __attribute__(attrlist) - #define ecb_is_constant(expr) __builtin_constant_p (expr) - #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) - #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) -#else - #define ecb_attribute(attrlist) - #define ecb_is_constant(expr) 0 - #define ecb_expect(expr,value) (expr) - #define ecb_prefetch(addr,rw,locality) -#endif - -/* no emulation for ecb_decltype */ -#if ECB_GCC_VERSION(4,5) - #define ecb_decltype(x) __decltype(x) -#elif ECB_GCC_VERSION(3,0) - #define ecb_decltype(x) __typeof(x) -#endif - -#define ecb_noinline ecb_attribute ((__noinline__)) -#define ecb_noreturn ecb_attribute ((__noreturn__)) -#define ecb_unused ecb_attribute ((__unused__)) -#define ecb_const ecb_attribute ((__const__)) -#define ecb_pure ecb_attribute ((__pure__)) - -#if ECB_GCC_VERSION(4,3) - #define ecb_artificial ecb_attribute ((__artificial__)) - #define ecb_hot ecb_attribute ((__hot__)) - #define ecb_cold ecb_attribute ((__cold__)) -#else - #define ecb_artificial - #define ecb_hot - #define ecb_cold -#endif - -/* put around conditional expressions if you are very sure that the */ -/* expression is mostly true or mostly false. note that these return */ -/* booleans, not the expression. */ -#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) -#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) -/* for compatibility to the rest of the world */ -#define ecb_likely(expr) ecb_expect_true (expr) -#define ecb_unlikely(expr) ecb_expect_false (expr) - -/* count trailing zero bits and count # of one bits */ -#if ECB_GCC_VERSION(3,4) - /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ - #define ecb_ld32(x) (__builtin_clz (x) ^ 31) - #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) - #define ecb_ctz32(x) __builtin_ctz (x) - #define ecb_ctz64(x) __builtin_ctzll (x) - #define ecb_popcount32(x) __builtin_popcount (x) - /* no popcountll */ -#else - ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; - ecb_function_ int - ecb_ctz32 (uint32_t x) - { - int r = 0; - - x &= ~x + 1; /* this isolates the lowest bit */ - -#if ECB_branchless_on_i386 - r += !!(x & 0xaaaaaaaa) << 0; - r += !!(x & 0xcccccccc) << 1; - r += !!(x & 0xf0f0f0f0) << 2; - r += !!(x & 0xff00ff00) << 3; - r += !!(x & 0xffff0000) << 4; -#else - if (x & 0xaaaaaaaa) r += 1; - if (x & 0xcccccccc) r += 2; - if (x & 0xf0f0f0f0) r += 4; - if (x & 0xff00ff00) r += 8; - if (x & 0xffff0000) r += 16; -#endif - - return r; - } - - ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; - ecb_function_ int - ecb_ctz64 (uint64_t x) - { - int shift = x & 0xffffffffU ? 0 : 32; - return ecb_ctz32 (x >> shift) + shift; - } - - ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; - ecb_function_ int - ecb_popcount32 (uint32_t x) - { - x -= (x >> 1) & 0x55555555; - x = ((x >> 2) & 0x33333333) + (x & 0x33333333); - x = ((x >> 4) + x) & 0x0f0f0f0f; - x *= 0x01010101; - - return x >> 24; - } - - /* you have the choice beetween something with a table lookup, */ - /* something using lots of bit arithmetic and a simple loop */ - /* we went for the loop */ - ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; - ecb_function_ int ecb_ld32 (uint32_t x) - { - int r = 0; - - if (x >> 16) { x >>= 16; r += 16; } - if (x >> 8) { x >>= 8; r += 8; } - if (x >> 4) { x >>= 4; r += 4; } - if (x >> 2) { x >>= 2; r += 2; } - if (x >> 1) { r += 1; } - - return r; - } - - ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; - ecb_function_ int ecb_ld64 (uint64_t x) - { - int r = 0; - - if (x >> 32) { x >>= 32; r += 32; } - - return r + ecb_ld32 (x); - } -#endif - -/* popcount64 is only available on 64 bit cpus as gcc builtin */ -/* so for this version we are lazy */ -ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; -ecb_function_ int -ecb_popcount64 (uint64_t x) -{ - return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); -} - -ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; -ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; -ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; -ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; -ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; -ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; -ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; -ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; - -ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } -ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } -ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } -ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } -ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } -ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } -ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } -ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } - -#if ECB_GCC_VERSION(4,3) - #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) - #define ecb_bswap32(x) __builtin_bswap32 (x) - #define ecb_bswap64(x) __builtin_bswap64 (x) -#else - ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; - ecb_function_ uint16_t - ecb_bswap16 (uint16_t x) - { - return ecb_rotl16 (x, 8); - } - - ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; - ecb_function_ uint32_t - ecb_bswap32 (uint32_t x) - { - return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); - } - - ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; - ecb_function_ uint64_t - ecb_bswap64 (uint64_t x) - { - return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); - } -#endif - -#if ECB_GCC_VERSION(4,5) - #define ecb_unreachable() __builtin_unreachable () -#else - /* this seems to work fine, but gcc always emits a warning for it :/ */ - ecb_function_ void ecb_unreachable (void) ecb_noreturn; - ecb_function_ void ecb_unreachable (void) { } -#endif - -/* try to tell the compiler that some condition is definitely true */ -#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) - -ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; -ecb_function_ unsigned char -ecb_byteorder_helper (void) -{ - const uint32_t u = 0x11223344; - return *(unsigned char *)&u; -} - -ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; -ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } -ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; -ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } - -#if ECB_GCC_VERSION(3,0) || ECB_C99 - #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) -#else - #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) -#endif - -#if ecb_cplusplus_does_not_suck - /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ - template<typename T, int N> - static inline int ecb_array_length (const T (&arr)[N]) - { - return N; - } -#else - #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) -#endif - -#endif - diff --git a/deps/uv/src/unix/eio/eio.3 b/deps/uv/src/unix/eio/eio.3 deleted file mode 100644 index ec5bde33e1..0000000000 --- a/deps/uv/src/unix/eio/eio.3 +++ /dev/null @@ -1,3428 +0,0 @@ -.\" Automatically generated by Pod::Man 2.16 (Pod::Simple 3.05) -.\" -.\" Standard preamble: -.\" ======================================================================== -.de Sh \" Subsection heading -.br -.if t .Sp -.ne 5 -.PP -\fB\\$1\fR -.PP -.. -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. \*(C+ will -.\" give a nicer C++. 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Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.if n .ad l -.nh -.SH "NAME" -libev \- a high performance full\-featured event loop written in C -.SH "SYNOPSIS" -.IX Header "SYNOPSIS" -.Vb 1 -\& #include <ev.h> -.Ve -.Sh "\s-1EXAMPLE\s0 \s-1PROGRAM\s0" -.IX Subsection "EXAMPLE PROGRAM" -.Vb 2 -\& // a single header file is required -\& #include <ev.h> -\& -\& // every watcher type has its own typedef\*(Aqd struct -\& // with the name ev_<type> -\& ev_io stdin_watcher; -\& ev_timer timeout_watcher; -\& -\& // all watcher callbacks have a similar signature -\& // this callback is called when data is readable on stdin -\& static void -\& stdin_cb (EV_P_ struct ev_io *w, int revents) -\& { -\& puts ("stdin ready"); -\& // for one\-shot events, one must manually stop the watcher -\& // with its corresponding stop function. -\& ev_io_stop (EV_A_ w); -\& -\& // this causes all nested ev_loop\*(Aqs to stop iterating -\& ev_unloop (EV_A_ EVUNLOOP_ALL); -\& } -\& -\& // another callback, this time for a time\-out -\& static void -\& timeout_cb (EV_P_ struct ev_timer *w, int revents) -\& { -\& puts ("timeout"); -\& // this causes the innermost ev_loop to stop iterating -\& ev_unloop (EV_A_ EVUNLOOP_ONE); -\& } -\& -\& int -\& main (void) -\& { -\& // use the default event loop unless you have special needs -\& struct ev_loop *loop = ev_default_loop (0); -\& -\& // initialise an io watcher, then start it -\& // this one will watch for stdin to become readable -\& ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ); -\& ev_io_start (loop, &stdin_watcher); -\& -\& // initialise a timer watcher, then start it -\& // simple non\-repeating 5.5 second timeout -\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.); -\& ev_timer_start (loop, &timeout_watcher); -\& -\& // now wait for events to arrive -\& ev_loop (loop, 0); -\& -\& // unloop was called, so exit -\& return 0; -\& } -.Ve -.SH "DESCRIPTION" -.IX Header "DESCRIPTION" -The newest version of this document is also available as an html-formatted -web page you might find easier to navigate when reading it for the first -time: <http://cvs.schmorp.de/libev/ev.html>. -.PP -Libev is an event loop: you register interest in certain events (such as a -file descriptor being readable or a timeout occurring), and it will manage -these event sources and provide your program with events. -.PP -To do this, it must take more or less complete control over your process -(or thread) by executing the \fIevent loop\fR handler, and will then -communicate events via a callback mechanism. -.PP -You register interest in certain events by registering so-called \fIevent -watchers\fR, which are relatively small C structures you initialise with the -details of the event, and then hand it over to libev by \fIstarting\fR the -watcher. -.Sh "\s-1FEATURES\s0" -.IX Subsection "FEATURES" -Libev supports \f(CW\*(C`select\*(C'\fR, \f(CW\*(C`poll\*(C'\fR, the Linux-specific \f(CW\*(C`epoll\*(C'\fR, the -BSD-specific \f(CW\*(C`kqueue\*(C'\fR and the Solaris-specific event port mechanisms -for file descriptor events (\f(CW\*(C`ev_io\*(C'\fR), the Linux \f(CW\*(C`inotify\*(C'\fR interface -(for \f(CW\*(C`ev_stat\*(C'\fR), relative timers (\f(CW\*(C`ev_timer\*(C'\fR), absolute timers -with customised rescheduling (\f(CW\*(C`ev_periodic\*(C'\fR), synchronous signals -(\f(CW\*(C`ev_signal\*(C'\fR), process status change events (\f(CW\*(C`ev_child\*(C'\fR), and event -watchers dealing with the event loop mechanism itself (\f(CW\*(C`ev_idle\*(C'\fR, -\&\f(CW\*(C`ev_embed\*(C'\fR, \f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR watchers) as well as -file watchers (\f(CW\*(C`ev_stat\*(C'\fR) and even limited support for fork events -(\f(CW\*(C`ev_fork\*(C'\fR). -.PP -It also is quite fast (see this -benchmark comparing it to libevent -for example). -.Sh "\s-1CONVENTIONS\s0" -.IX Subsection "CONVENTIONS" -Libev is very configurable. In this manual the default (and most common) -configuration will be described, which supports multiple event loops. For -more info about various configuration options please have a look at -\&\fB\s-1EMBED\s0\fR section in this manual. If libev was configured without support -for multiple event loops, then all functions taking an initial argument of -name \f(CW\*(C`loop\*(C'\fR (which is always of type \f(CW\*(C`struct ev_loop *\*(C'\fR) will not have -this argument. -.Sh "\s-1TIME\s0 \s-1REPRESENTATION\s0" -.IX Subsection "TIME REPRESENTATION" -Libev represents time as a single floating point number, representing the -(fractional) number of seconds since the (\s-1POSIX\s0) epoch (somewhere near -the beginning of 1970, details are complicated, don't ask). This type is -called \f(CW\*(C`ev_tstamp\*(C'\fR, which is what you should use too. It usually aliases -to the \f(CW\*(C`double\*(C'\fR type in C, and when you need to do any calculations on -it, you should treat it as some floatingpoint value. Unlike the name -component \f(CW\*(C`stamp\*(C'\fR might indicate, it is also used for time differences -throughout libev. -.SH "GLOBAL FUNCTIONS" -.IX Header "GLOBAL FUNCTIONS" -These functions can be called anytime, even before initialising the -library in any way. -.IP "ev_tstamp ev_time ()" 4 -.IX Item "ev_tstamp ev_time ()" -Returns the current time as libev would use it. Please note that the -\&\f(CW\*(C`ev_now\*(C'\fR function is usually faster and also often returns the timestamp -you actually want to know. -.IP "ev_sleep (ev_tstamp interval)" 4 -.IX Item "ev_sleep (ev_tstamp interval)" -Sleep for the given interval: The current thread will be blocked until -either it is interrupted or the given time interval has passed. Basically -this is a subsecond-resolution \f(CW\*(C`sleep ()\*(C'\fR. -.IP "int ev_version_major ()" 4 -.IX Item "int ev_version_major ()" -.PD 0 -.IP "int ev_version_minor ()" 4 -.IX Item "int ev_version_minor ()" -.PD -You can find out the major and minor \s-1ABI\s0 version numbers of the library -you linked against by calling the functions \f(CW\*(C`ev_version_major\*(C'\fR and -\&\f(CW\*(C`ev_version_minor\*(C'\fR. If you want, you can compare against the global -symbols \f(CW\*(C`EV_VERSION_MAJOR\*(C'\fR and \f(CW\*(C`EV_VERSION_MINOR\*(C'\fR, which specify the -version of the library your program was compiled against. -.Sp -These version numbers refer to the \s-1ABI\s0 version of the library, not the -release version. -.Sp -Usually, it's a good idea to terminate if the major versions mismatch, -as this indicates an incompatible change. Minor versions are usually -compatible to older versions, so a larger minor version alone is usually -not a problem. -.Sp -Example: Make sure we haven't accidentally been linked against the wrong -version. -.Sp -.Vb 3 -\& assert (("libev version mismatch", -\& ev_version_major () == EV_VERSION_MAJOR -\& && ev_version_minor () >= EV_VERSION_MINOR)); -.Ve -.IP "unsigned int ev_supported_backends ()" 4 -.IX Item "unsigned int ev_supported_backends ()" -Return the set of all backends (i.e. their corresponding \f(CW\*(C`EV_BACKEND_*\*(C'\fR -value) compiled into this binary of libev (independent of their -availability on the system you are running on). See \f(CW\*(C`ev_default_loop\*(C'\fR for -a description of the set values. -.Sp -Example: make sure we have the epoll method, because yeah this is cool and -a must have and can we have a torrent of it please!!!11 -.Sp -.Vb 2 -\& assert (("sorry, no epoll, no sex", -\& ev_supported_backends () & EVBACKEND_EPOLL)); -.Ve -.IP "unsigned int ev_recommended_backends ()" 4 -.IX Item "unsigned int ev_recommended_backends ()" -Return the set of all backends compiled into this binary of libev and also -recommended for this platform. This set is often smaller than the one -returned by \f(CW\*(C`ev_supported_backends\*(C'\fR, as for example kqueue is broken on -most BSDs and will not be autodetected unless you explicitly request it -(assuming you know what you are doing). This is the set of backends that -libev will probe for if you specify no backends explicitly. -.IP "unsigned int ev_embeddable_backends ()" 4 -.IX Item "unsigned int ev_embeddable_backends ()" -Returns the set of backends that are embeddable in other event loops. This -is the theoretical, all-platform, value. To find which backends -might be supported on the current system, you would need to look at -\&\f(CW\*(C`ev_embeddable_backends () & ev_supported_backends ()\*(C'\fR, likewise for -recommended ones. -.Sp -See the description of \f(CW\*(C`ev_embed\*(C'\fR watchers for more info. -.IP "ev_set_allocator (void *(*cb)(void *ptr, long size))" 4 -.IX Item "ev_set_allocator (void *(*cb)(void *ptr, long size))" -Sets the allocation function to use (the prototype is similar \- the -semantics are identical to the \f(CW\*(C`realloc\*(C'\fR C89/SuS/POSIX function). It is -used to allocate and free memory (no surprises here). If it returns zero -when memory needs to be allocated (\f(CW\*(C`size != 0\*(C'\fR), the library might abort -or take some potentially destructive action. -.Sp -Since some systems (at least OpenBSD and Darwin) fail to implement -correct \f(CW\*(C`realloc\*(C'\fR semantics, libev will use a wrapper around the system -\&\f(CW\*(C`realloc\*(C'\fR and \f(CW\*(C`free\*(C'\fR functions by default. -.Sp -You could override this function in high-availability programs to, say, -free some memory if it cannot allocate memory, to use a special allocator, -or even to sleep a while and retry until some memory is available. -.Sp -Example: Replace the libev allocator with one that waits a bit and then -retries (example requires a standards-compliant \f(CW\*(C`realloc\*(C'\fR). -.Sp -.Vb 6 -\& static void * -\& persistent_realloc (void *ptr, size_t size) -\& { -\& for (;;) -\& { -\& void *newptr = realloc (ptr, size); -\& -\& if (newptr) -\& return newptr; -\& -\& sleep (60); -\& } -\& } -\& -\& ... -\& ev_set_allocator (persistent_realloc); -.Ve -.IP "ev_set_syserr_cb (void (*cb)(const char *msg));" 4 -.IX Item "ev_set_syserr_cb (void (*cb)(const char *msg));" -Set the callback function to call on a retryable syscall error (such -as failed select, poll, epoll_wait). The message is a printable string -indicating the system call or subsystem causing the problem. If this -callback is set, then libev will expect it to remedy the sitution, no -matter what, when it returns. That is, libev will generally retry the -requested operation, or, if the condition doesn't go away, do bad stuff -(such as abort). -.Sp -Example: This is basically the same thing that libev does internally, too. -.Sp -.Vb 6 -\& static void -\& fatal_error (const char *msg) -\& { -\& perror (msg); -\& abort (); -\& } -\& -\& ... -\& ev_set_syserr_cb (fatal_error); -.Ve -.SH "FUNCTIONS CONTROLLING THE EVENT LOOP" -.IX Header "FUNCTIONS CONTROLLING THE EVENT LOOP" -An event loop is described by a \f(CW\*(C`struct ev_loop *\*(C'\fR. The library knows two -types of such loops, the \fIdefault\fR loop, which supports signals and child -events, and dynamically created loops which do not. -.IP "struct ev_loop *ev_default_loop (unsigned int flags)" 4 -.IX Item "struct ev_loop *ev_default_loop (unsigned int flags)" -This will initialise the default event loop if it hasn't been initialised -yet and return it. If the default loop could not be initialised, returns -false. If it already was initialised it simply returns it (and ignores the -flags. If that is troubling you, check \f(CW\*(C`ev_backend ()\*(C'\fR afterwards). -.Sp -If you don't know what event loop to use, use the one returned from this -function. -.Sp -Note that this function is \fInot\fR thread-safe, so if you want to use it -from multiple threads, you have to lock (note also that this is unlikely, -as loops cannot bes hared easily between threads anyway). -.Sp -The default loop is the only loop that can handle \f(CW\*(C`ev_signal\*(C'\fR and -\&\f(CW\*(C`ev_child\*(C'\fR watchers, and to do this, it always registers a handler -for \f(CW\*(C`SIGCHLD\*(C'\fR. If this is a problem for your app you can either -create a dynamic loop with \f(CW\*(C`ev_loop_new\*(C'\fR that doesn't do that, or you -can simply overwrite the \f(CW\*(C`SIGCHLD\*(C'\fR signal handler \fIafter\fR calling -\&\f(CW\*(C`ev_default_init\*(C'\fR. -.Sp -The flags argument can be used to specify special behaviour or specific -backends to use, and is usually specified as \f(CW0\fR (or \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). -.Sp -The following flags are supported: -.RS 4 -.ie n .IP """EVFLAG_AUTO""" 4 -.el .IP "\f(CWEVFLAG_AUTO\fR" 4 -.IX Item "EVFLAG_AUTO" -The default flags value. Use this if you have no clue (it's the right -thing, believe me). -.ie n .IP """EVFLAG_NOENV""" 4 -.el .IP "\f(CWEVFLAG_NOENV\fR" 4 -.IX Item "EVFLAG_NOENV" -If this flag bit is ored into the flag value (or the program runs setuid -or setgid) then libev will \fInot\fR look at the environment variable -\&\f(CW\*(C`LIBEV_FLAGS\*(C'\fR. Otherwise (the default), this environment variable will -override the flags completely if it is found in the environment. This is -useful to try out specific backends to test their performance, or to work -around bugs. -.ie n .IP """EVFLAG_FORKCHECK""" 4 -.el .IP "\f(CWEVFLAG_FORKCHECK\fR" 4 -.IX Item "EVFLAG_FORKCHECK" -Instead of calling \f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR manually after -a fork, you can also make libev check for a fork in each iteration by -enabling this flag. -.Sp -This works by calling \f(CW\*(C`getpid ()\*(C'\fR on every iteration of the loop, -and thus this might slow down your event loop if you do a lot of loop -iterations and little real work, but is usually not noticeable (on my -GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence -without a syscall and thus \fIvery\fR fast, but my GNU/Linux system also has -\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster). -.Sp -The big advantage of this flag is that you can forget about fork (and -forget about forgetting to tell libev about forking) when you use this -flag. -.Sp -This flag setting cannot be overriden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR -environment variable. -.ie n .IP """EVBACKEND_SELECT"" (value 1, portable select backend)" 4 -.el .IP "\f(CWEVBACKEND_SELECT\fR (value 1, portable select backend)" 4 -.IX Item "EVBACKEND_SELECT (value 1, portable select backend)" -This is your standard \fIselect\fR\|(2) backend. Not \fIcompletely\fR standard, as -libev tries to roll its own fd_set with no limits on the number of fds, -but if that fails, expect a fairly low limit on the number of fds when -using this backend. It doesn't scale too well (O(highest_fd)), but its -usually the fastest backend for a low number of (low-numbered :) fds. -.Sp -To get good performance out of this backend you need a high amount of -parallelity (most of the file descriptors should be busy). If you are -writing a server, you should \f(CW\*(C`accept ()\*(C'\fR in a loop to accept as many -connections as possible during one iteration. You might also want to have -a look at \f(CW\*(C`ev_set_io_collect_interval ()\*(C'\fR to increase the amount of -readyness notifications you get per iteration. -.ie n .IP """EVBACKEND_POLL"" (value 2, poll backend, available everywhere except on windows)" 4 -.el .IP "\f(CWEVBACKEND_POLL\fR (value 2, poll backend, available everywhere except on windows)" 4 -.IX Item "EVBACKEND_POLL (value 2, poll backend, available everywhere except on windows)" -And this is your standard \fIpoll\fR\|(2) backend. It's more complicated -than select, but handles sparse fds better and has no artificial -limit on the number of fds you can use (except it will slow down -considerably with a lot of inactive fds). It scales similarly to select, -i.e. O(total_fds). See the entry for \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR, above, for -performance tips. -.ie n .IP """EVBACKEND_EPOLL"" (value 4, Linux)" 4 -.el .IP "\f(CWEVBACKEND_EPOLL\fR (value 4, Linux)" 4 -.IX Item "EVBACKEND_EPOLL (value 4, Linux)" -For few fds, this backend is a bit little slower than poll and select, -but it scales phenomenally better. While poll and select usually scale -like O(total_fds) where n is the total number of fds (or the highest fd), -epoll scales either O(1) or O(active_fds). The epoll design has a number -of shortcomings, such as silently dropping events in some hard-to-detect -cases and requiring a syscall per fd change, no fork support and bad -support for dup. -.Sp -While stopping, setting and starting an I/O watcher in the same iteration -will result in some caching, there is still a syscall per such incident -(because the fd could point to a different file description now), so its -best to avoid that. Also, \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors might not work -very well if you register events for both fds. -.Sp -Please note that epoll sometimes generates spurious notifications, so you -need to use non-blocking I/O or other means to avoid blocking when no data -(or space) is available. -.Sp -Best performance from this backend is achieved by not unregistering all -watchers for a file descriptor until it has been closed, if possible, i.e. -keep at least one watcher active per fd at all times. -.Sp -While nominally embeddeble in other event loops, this feature is broken in -all kernel versions tested so far. -.ie n .IP """EVBACKEND_KQUEUE"" (value 8, most \s-1BSD\s0 clones)" 4 -.el .IP "\f(CWEVBACKEND_KQUEUE\fR (value 8, most \s-1BSD\s0 clones)" 4 -.IX Item "EVBACKEND_KQUEUE (value 8, most BSD clones)" -Kqueue deserves special mention, as at the time of this writing, it -was broken on all BSDs except NetBSD (usually it doesn't work reliably -with anything but sockets and pipes, except on Darwin, where of course -it's completely useless). For this reason it's not being \*(L"autodetected\*(R" -unless you explicitly specify it explicitly in the flags (i.e. using -\&\f(CW\*(C`EVBACKEND_KQUEUE\*(C'\fR) or libev was compiled on a known-to-be-good (\-enough) -system like NetBSD. -.Sp -You still can embed kqueue into a normal poll or select backend and use it -only for sockets (after having made sure that sockets work with kqueue on -the target platform). See \f(CW\*(C`ev_embed\*(C'\fR watchers for more info. -.Sp -It scales in the same way as the epoll backend, but the interface to the -kernel is more efficient (which says nothing about its actual speed, of -course). While stopping, setting and starting an I/O watcher does never -cause an extra syscall as with \f(CW\*(C`EVBACKEND_EPOLL\*(C'\fR, it still adds up to -two event changes per incident, support for \f(CW\*(C`fork ()\*(C'\fR is very bad and it -drops fds silently in similarly hard-to-detect cases. -.Sp -This backend usually performs well under most conditions. -.Sp -While nominally embeddable in other event loops, this doesn't work -everywhere, so you might need to test for this. And since it is broken -almost everywhere, you should only use it when you have a lot of sockets -(for which it usually works), by embedding it into another event loop -(e.g. \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR) and using it only for -sockets. -.ie n .IP """EVBACKEND_DEVPOLL"" (value 16, Solaris 8)" 4 -.el .IP "\f(CWEVBACKEND_DEVPOLL\fR (value 16, Solaris 8)" 4 -.IX Item "EVBACKEND_DEVPOLL (value 16, Solaris 8)" -This is not implemented yet (and might never be, unless you send me an -implementation). According to reports, \f(CW\*(C`/dev/poll\*(C'\fR only supports sockets -and is not embeddable, which would limit the usefulness of this backend -immensely. -.ie n .IP """EVBACKEND_PORT"" (value 32, Solaris 10)" 4 -.el .IP "\f(CWEVBACKEND_PORT\fR (value 32, Solaris 10)" 4 -.IX Item "EVBACKEND_PORT (value 32, Solaris 10)" -This uses the Solaris 10 event port mechanism. As with everything on Solaris, -it's really slow, but it still scales very well (O(active_fds)). -.Sp -Please note that solaris event ports can deliver a lot of spurious -notifications, so you need to use non-blocking I/O or other means to avoid -blocking when no data (or space) is available. -.Sp -While this backend scales well, it requires one system call per active -file descriptor per loop iteration. For small and medium numbers of file -descriptors a \*(L"slow\*(R" \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR backend -might perform better. -.Sp -On the positive side, ignoring the spurious readyness notifications, this -backend actually performed to specification in all tests and is fully -embeddable, which is a rare feat among the OS-specific backends. -.ie n .IP """EVBACKEND_ALL""" 4 -.el .IP "\f(CWEVBACKEND_ALL\fR" 4 -.IX Item "EVBACKEND_ALL" -Try all backends (even potentially broken ones that wouldn't be tried -with \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). Since this is a mask, you can do stuff such as -\&\f(CW\*(C`EVBACKEND_ALL & ~EVBACKEND_KQUEUE\*(C'\fR. -.Sp -It is definitely not recommended to use this flag. -.RE -.RS 4 -.Sp -If one or more of these are ored into the flags value, then only these -backends will be tried (in the reverse order as listed here). If none are -specified, all backends in \f(CW\*(C`ev_recommended_backends ()\*(C'\fR will be tried. -.Sp -The most typical usage is like this: -.Sp -.Vb 2 -\& if (!ev_default_loop (0)) -\& fatal ("could not initialise libev, bad $LIBEV_FLAGS in environment?"); -.Ve -.Sp -Restrict libev to the select and poll backends, and do not allow -environment settings to be taken into account: -.Sp -.Vb 1 -\& ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV); -.Ve -.Sp -Use whatever libev has to offer, but make sure that kqueue is used if -available (warning, breaks stuff, best use only with your own private -event loop and only if you know the \s-1OS\s0 supports your types of fds): -.Sp -.Vb 1 -\& ev_default_loop (ev_recommended_backends () | EVBACKEND_KQUEUE); -.Ve -.RE -.IP "struct ev_loop *ev_loop_new (unsigned int flags)" 4 -.IX Item "struct ev_loop *ev_loop_new (unsigned int flags)" -Similar to \f(CW\*(C`ev_default_loop\*(C'\fR, but always creates a new event loop that is -always distinct from the default loop. Unlike the default loop, it cannot -handle signal and child watchers, and attempts to do so will be greeted by -undefined behaviour (or a failed assertion if assertions are enabled). -.Sp -Note that this function \fIis\fR thread-safe, and the recommended way to use -libev with threads is indeed to create one loop per thread, and using the -default loop in the \*(L"main\*(R" or \*(L"initial\*(R" thread. -.Sp -Example: Try to create a event loop that uses epoll and nothing else. -.Sp -.Vb 3 -\& struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV); -\& if (!epoller) -\& fatal ("no epoll found here, maybe it hides under your chair"); -.Ve -.IP "ev_default_destroy ()" 4 -.IX Item "ev_default_destroy ()" -Destroys the default loop again (frees all memory and kernel state -etc.). None of the active event watchers will be stopped in the normal -sense, so e.g. \f(CW\*(C`ev_is_active\*(C'\fR might still return true. It is your -responsibility to either stop all watchers cleanly yoursef \fIbefore\fR -calling this function, or cope with the fact afterwards (which is usually -the easiest thing, you can just ignore the watchers and/or \f(CW\*(C`free ()\*(C'\fR them -for example). -.Sp -Note that certain global state, such as signal state, will not be freed by -this function, and related watchers (such as signal and child watchers) -would need to be stopped manually. -.Sp -In general it is not advisable to call this function except in the -rare occasion where you really need to free e.g. the signal handling -pipe fds. If you need dynamically allocated loops it is better to use -\&\f(CW\*(C`ev_loop_new\*(C'\fR and \f(CW\*(C`ev_loop_destroy\*(C'\fR). -.IP "ev_loop_destroy (loop)" 4 -.IX Item "ev_loop_destroy (loop)" -Like \f(CW\*(C`ev_default_destroy\*(C'\fR, but destroys an event loop created by an -earlier call to \f(CW\*(C`ev_loop_new\*(C'\fR. -.IP "ev_default_fork ()" 4 -.IX Item "ev_default_fork ()" -This function sets a flag that causes subsequent \f(CW\*(C`ev_loop\*(C'\fR iterations -to reinitialise the kernel state for backends that have one. Despite the -name, you can call it anytime, but it makes most sense after forking, in -the child process (or both child and parent, but that again makes little -sense). You \fImust\fR call it in the child before using any of the libev -functions, and it will only take effect at the next \f(CW\*(C`ev_loop\*(C'\fR iteration. -.Sp -On the other hand, you only need to call this function in the child -process if and only if you want to use the event library in the child. If -you just fork+exec, you don't have to call it at all. -.Sp -The function itself is quite fast and it's usually not a problem to call -it just in case after a fork. To make this easy, the function will fit in -quite nicely into a call to \f(CW\*(C`pthread_atfork\*(C'\fR: -.Sp -.Vb 1 -\& pthread_atfork (0, 0, ev_default_fork); -.Ve -.IP "ev_loop_fork (loop)" 4 -.IX Item "ev_loop_fork (loop)" -Like \f(CW\*(C`ev_default_fork\*(C'\fR, but acts on an event loop created by -\&\f(CW\*(C`ev_loop_new\*(C'\fR. Yes, you have to call this on every allocated event loop -after fork, and how you do this is entirely your own problem. -.IP "int ev_is_default_loop (loop)" 4 -.IX Item "int ev_is_default_loop (loop)" -Returns true when the given loop actually is the default loop, false otherwise. -.IP "unsigned int ev_loop_count (loop)" 4 -.IX Item "unsigned int ev_loop_count (loop)" -Returns the count of loop iterations for the loop, which is identical to -the number of times libev did poll for new events. It starts at \f(CW0\fR and -happily wraps around with enough iterations. -.Sp -This value can sometimes be useful as a generation counter of sorts (it -\&\*(L"ticks\*(R" the number of loop iterations), as it roughly corresponds with -\&\f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR calls. -.IP "unsigned int ev_backend (loop)" 4 -.IX Item "unsigned int ev_backend (loop)" -Returns one of the \f(CW\*(C`EVBACKEND_*\*(C'\fR flags indicating the event backend in -use. -.IP "ev_tstamp ev_now (loop)" 4 -.IX Item "ev_tstamp ev_now (loop)" -Returns the current \*(L"event loop time\*(R", which is the time the event loop -received events and started processing them. This timestamp does not -change as long as callbacks are being processed, and this is also the base -time used for relative timers. You can treat it as the timestamp of the -event occurring (or more correctly, libev finding out about it). -.IP "ev_loop (loop, int flags)" 4 -.IX Item "ev_loop (loop, int flags)" -Finally, this is it, the event handler. This function usually is called -after you initialised all your watchers and you want to start handling -events. -.Sp -If the flags argument is specified as \f(CW0\fR, it will not return until -either no event watchers are active anymore or \f(CW\*(C`ev_unloop\*(C'\fR was called. -.Sp -Please note that an explicit \f(CW\*(C`ev_unloop\*(C'\fR is usually better than -relying on all watchers to be stopped when deciding when a program has -finished (especially in interactive programs), but having a program that -automatically loops as long as it has to and no longer by virtue of -relying on its watchers stopping correctly is a thing of beauty. -.Sp -A flags value of \f(CW\*(C`EVLOOP_NONBLOCK\*(C'\fR will look for new events, will handle -those events and any outstanding ones, but will not block your process in -case there are no events and will return after one iteration of the loop. -.Sp -A flags value of \f(CW\*(C`EVLOOP_ONESHOT\*(C'\fR will look for new events (waiting if -neccessary) and will handle those and any outstanding ones. It will block -your process until at least one new event arrives, and will return after -one iteration of the loop. This is useful if you are waiting for some -external event in conjunction with something not expressible using other -libev watchers. However, a pair of \f(CW\*(C`ev_prepare\*(C'\fR/\f(CW\*(C`ev_check\*(C'\fR watchers is -usually a better approach for this kind of thing. -.Sp -Here are the gory details of what \f(CW\*(C`ev_loop\*(C'\fR does: -.Sp -.Vb 10 -\& \- Before the first iteration, call any pending watchers. -\& * If EVFLAG_FORKCHECK was used, check for a fork. -\& \- If a fork was detected, queue and call all fork watchers. -\& \- Queue and call all prepare watchers. -\& \- If we have been forked, recreate the kernel state. -\& \- Update the kernel state with all outstanding changes. -\& \- Update the "event loop time". -\& \- Calculate for how long to sleep or block, if at all -\& (active idle watchers, EVLOOP_NONBLOCK or not having -\& any active watchers at all will result in not sleeping). -\& \- Sleep if the I/O and timer collect interval say so. -\& \- Block the process, waiting for any events. -\& \- Queue all outstanding I/O (fd) events. -\& \- Update the "event loop time" and do time jump handling. -\& \- Queue all outstanding timers. -\& \- Queue all outstanding periodics. -\& \- If no events are pending now, queue all idle watchers. -\& \- Queue all check watchers. -\& \- Call all queued watchers in reverse order (i.e. check watchers first). -\& Signals and child watchers are implemented as I/O watchers, and will -\& be handled here by queueing them when their watcher gets executed. -\& \- If ev_unloop has been called, or EVLOOP_ONESHOT or EVLOOP_NONBLOCK -\& were used, or there are no active watchers, return, otherwise -\& continue with step *. -.Ve -.Sp -Example: Queue some jobs and then loop until no events are outstanding -anymore. -.Sp -.Vb 4 -\& ... queue jobs here, make sure they register event watchers as long -\& ... as they still have work to do (even an idle watcher will do..) -\& ev_loop (my_loop, 0); -\& ... jobs done. yeah! -.Ve -.IP "ev_unloop (loop, how)" 4 -.IX Item "ev_unloop (loop, how)" -Can be used to make a call to \f(CW\*(C`ev_loop\*(C'\fR return early (but only after it -has processed all outstanding events). The \f(CW\*(C`how\*(C'\fR argument must be either -\&\f(CW\*(C`EVUNLOOP_ONE\*(C'\fR, which will make the innermost \f(CW\*(C`ev_loop\*(C'\fR call return, or -\&\f(CW\*(C`EVUNLOOP_ALL\*(C'\fR, which will make all nested \f(CW\*(C`ev_loop\*(C'\fR calls return. -.Sp -This \*(L"unloop state\*(R" will be cleared when entering \f(CW\*(C`ev_loop\*(C'\fR again. -.IP "ev_ref (loop)" 4 -.IX Item "ev_ref (loop)" -.PD 0 -.IP "ev_unref (loop)" 4 -.IX Item "ev_unref (loop)" -.PD -Ref/unref can be used to add or remove a reference count on the event -loop: Every watcher keeps one reference, and as long as the reference -count is nonzero, \f(CW\*(C`ev_loop\*(C'\fR will not return on its own. If you have -a watcher you never unregister that should not keep \f(CW\*(C`ev_loop\*(C'\fR from -returning, \fIev_unref()\fR after starting, and \fIev_ref()\fR before stopping it. For -example, libev itself uses this for its internal signal pipe: It is not -visible to the libev user and should not keep \f(CW\*(C`ev_loop\*(C'\fR from exiting if -no event watchers registered by it are active. It is also an excellent -way to do this for generic recurring timers or from within third-party -libraries. Just remember to \fIunref after start\fR and \fIref before stop\fR -(but only if the watcher wasn't active before, or was active before, -respectively). -.Sp -Example: Create a signal watcher, but keep it from keeping \f(CW\*(C`ev_loop\*(C'\fR -running when nothing else is active. -.Sp -.Vb 4 -\& struct ev_signal exitsig; -\& ev_signal_init (&exitsig, sig_cb, SIGINT); -\& ev_signal_start (loop, &exitsig); -\& evf_unref (loop); -.Ve -.Sp -Example: For some weird reason, unregister the above signal handler again. -.Sp -.Vb 2 -\& ev_ref (loop); -\& ev_signal_stop (loop, &exitsig); -.Ve -.IP "ev_set_io_collect_interval (loop, ev_tstamp interval)" 4 -.IX Item "ev_set_io_collect_interval (loop, ev_tstamp interval)" -.PD 0 -.IP "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" 4 -.IX Item "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" -.PD -These advanced functions influence the time that libev will spend waiting -for events. Both are by default \f(CW0\fR, meaning that libev will try to -invoke timer/periodic callbacks and I/O callbacks with minimum latency. -.Sp -Setting these to a higher value (the \f(CW\*(C`interval\*(C'\fR \fImust\fR be >= \f(CW0\fR) -allows libev to delay invocation of I/O and timer/periodic callbacks to -increase efficiency of loop iterations. -.Sp -The background is that sometimes your program runs just fast enough to -handle one (or very few) event(s) per loop iteration. While this makes -the program responsive, it also wastes a lot of \s-1CPU\s0 time to poll for new -events, especially with backends like \f(CW\*(C`select ()\*(C'\fR which have a high -overhead for the actual polling but can deliver many events at once. -.Sp -By setting a higher \fIio collect interval\fR you allow libev to spend more -time collecting I/O events, so you can handle more events per iteration, -at the cost of increasing latency. Timeouts (both \f(CW\*(C`ev_periodic\*(C'\fR and -\&\f(CW\*(C`ev_timer\*(C'\fR) will be not affected. Setting this to a non-null value will -introduce an additional \f(CW\*(C`ev_sleep ()\*(C'\fR call into most loop iterations. -.Sp -Likewise, by setting a higher \fItimeout collect interval\fR you allow libev -to spend more time collecting timeouts, at the expense of increased -latency (the watcher callback will be called later). \f(CW\*(C`ev_io\*(C'\fR watchers -will not be affected. Setting this to a non-null value will not introduce -any overhead in libev. -.Sp -Many (busy) programs can usually benefit by setting the io collect -interval to a value near \f(CW0.1\fR or so, which is often enough for -interactive servers (of course not for games), likewise for timeouts. It -usually doesn't make much sense to set it to a lower value than \f(CW0.01\fR, -as this approsaches the timing granularity of most systems. -.SH "ANATOMY OF A WATCHER" -.IX Header "ANATOMY OF A WATCHER" -A watcher is a structure that you create and register to record your -interest in some event. For instance, if you want to wait for \s-1STDIN\s0 to -become readable, you would create an \f(CW\*(C`ev_io\*(C'\fR watcher for that: -.PP -.Vb 5 -\& static void my_cb (struct ev_loop *loop, struct ev_io *w, int revents) -\& { -\& ev_io_stop (w); -\& ev_unloop (loop, EVUNLOOP_ALL); -\& } -\& -\& struct ev_loop *loop = ev_default_loop (0); -\& struct ev_io stdin_watcher; -\& ev_init (&stdin_watcher, my_cb); -\& ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ); -\& ev_io_start (loop, &stdin_watcher); -\& ev_loop (loop, 0); -.Ve -.PP -As you can see, you are responsible for allocating the memory for your -watcher structures (and it is usually a bad idea to do this on the stack, -although this can sometimes be quite valid). -.PP -Each watcher structure must be initialised by a call to \f(CW\*(C`ev_init -(watcher *, callback)\*(C'\fR, which expects a callback to be provided. This -callback gets invoked each time the event occurs (or, in the case of io -watchers, each time the event loop detects that the file descriptor given -is readable and/or writable). -.PP -Each watcher type has its own \f(CW\*(C`ev_<type>_set (watcher *, ...)\*(C'\fR macro -with arguments specific to this watcher type. There is also a macro -to combine initialisation and setting in one call: \f(CW\*(C`ev_<type>_init -(watcher *, callback, ...)\*(C'\fR. -.PP -To make the watcher actually watch out for events, you have to start it -with a watcher-specific start function (\f(CW\*(C`ev_<type>_start (loop, watcher -*)\*(C'\fR), and you can stop watching for events at any time by calling the -corresponding stop function (\f(CW\*(C`ev_<type>_stop (loop, watcher *)\*(C'\fR. -.PP -As long as your watcher is active (has been started but not stopped) you -must not touch the values stored in it. Most specifically you must never -reinitialise it or call its \f(CW\*(C`set\*(C'\fR macro. -.PP -Each and every callback receives the event loop pointer as first, the -registered watcher structure as second, and a bitset of received events as -third argument. -.PP -The received events usually include a single bit per event type received -(you can receive multiple events at the same time). The possible bit masks -are: -.ie n .IP """EV_READ""" 4 -.el .IP "\f(CWEV_READ\fR" 4 -.IX Item "EV_READ" -.PD 0 -.ie n .IP """EV_WRITE""" 4 -.el .IP "\f(CWEV_WRITE\fR" 4 -.IX Item "EV_WRITE" -.PD -The file descriptor in the \f(CW\*(C`ev_io\*(C'\fR watcher has become readable and/or -writable. -.ie n .IP """EV_TIMEOUT""" 4 -.el .IP "\f(CWEV_TIMEOUT\fR" 4 -.IX Item "EV_TIMEOUT" -The \f(CW\*(C`ev_timer\*(C'\fR watcher has timed out. -.ie n .IP """EV_PERIODIC""" 4 -.el .IP "\f(CWEV_PERIODIC\fR" 4 -.IX Item "EV_PERIODIC" -The \f(CW\*(C`ev_periodic\*(C'\fR watcher has timed out. -.ie n .IP """EV_SIGNAL""" 4 -.el .IP "\f(CWEV_SIGNAL\fR" 4 -.IX Item "EV_SIGNAL" -The signal specified in the \f(CW\*(C`ev_signal\*(C'\fR watcher has been received by a thread. -.ie n .IP """EV_CHILD""" 4 -.el .IP "\f(CWEV_CHILD\fR" 4 -.IX Item "EV_CHILD" -The pid specified in the \f(CW\*(C`ev_child\*(C'\fR watcher has received a status change. -.ie n .IP """EV_STAT""" 4 -.el .IP "\f(CWEV_STAT\fR" 4 -.IX Item "EV_STAT" -The path specified in the \f(CW\*(C`ev_stat\*(C'\fR watcher changed its attributes somehow. -.ie n .IP """EV_IDLE""" 4 -.el .IP "\f(CWEV_IDLE\fR" 4 -.IX Item "EV_IDLE" -The \f(CW\*(C`ev_idle\*(C'\fR watcher has determined that you have nothing better to do. -.ie n .IP """EV_PREPARE""" 4 -.el .IP "\f(CWEV_PREPARE\fR" 4 -.IX Item "EV_PREPARE" -.PD 0 -.ie n .IP """EV_CHECK""" 4 -.el .IP "\f(CWEV_CHECK\fR" 4 -.IX Item "EV_CHECK" -.PD -All \f(CW\*(C`ev_prepare\*(C'\fR watchers are invoked just \fIbefore\fR \f(CW\*(C`ev_loop\*(C'\fR starts -to gather new events, and all \f(CW\*(C`ev_check\*(C'\fR watchers are invoked just after -\&\f(CW\*(C`ev_loop\*(C'\fR has gathered them, but before it invokes any callbacks for any -received events. Callbacks of both watcher types can start and stop as -many watchers as they want, and all of them will be taken into account -(for example, a \f(CW\*(C`ev_prepare\*(C'\fR watcher might start an idle watcher to keep -\&\f(CW\*(C`ev_loop\*(C'\fR from blocking). -.ie n .IP """EV_EMBED""" 4 -.el .IP "\f(CWEV_EMBED\fR" 4 -.IX Item "EV_EMBED" -The embedded event loop specified in the \f(CW\*(C`ev_embed\*(C'\fR watcher needs attention. -.ie n .IP """EV_FORK""" 4 -.el .IP "\f(CWEV_FORK\fR" 4 -.IX Item "EV_FORK" -The event loop has been resumed in the child process after fork (see -\&\f(CW\*(C`ev_fork\*(C'\fR). -.ie n .IP """EV_ASYNC""" 4 -.el .IP "\f(CWEV_ASYNC\fR" 4 -.IX Item "EV_ASYNC" -The given async watcher has been asynchronously notified (see \f(CW\*(C`ev_async\*(C'\fR). -.ie n .IP """EV_ERROR""" 4 -.el .IP "\f(CWEV_ERROR\fR" 4 -.IX Item "EV_ERROR" -An unspecified error has occured, the watcher has been stopped. This might -happen because the watcher could not be properly started because libev -ran out of memory, a file descriptor was found to be closed or any other -problem. You best act on it by reporting the problem and somehow coping -with the watcher being stopped. -.Sp -Libev will usually signal a few \*(L"dummy\*(R" events together with an error, -for example it might indicate that a fd is readable or writable, and if -your callbacks is well-written it can just attempt the operation and cope -with the error from \fIread()\fR or \fIwrite()\fR. This will not work in multithreaded -programs, though, so beware. -.Sh "\s-1GENERIC\s0 \s-1WATCHER\s0 \s-1FUNCTIONS\s0" -.IX Subsection "GENERIC WATCHER FUNCTIONS" -In the following description, \f(CW\*(C`TYPE\*(C'\fR stands for the watcher type, -e.g. \f(CW\*(C`timer\*(C'\fR for \f(CW\*(C`ev_timer\*(C'\fR watchers and \f(CW\*(C`io\*(C'\fR for \f(CW\*(C`ev_io\*(C'\fR watchers. -.ie n .IP """ev_init"" (ev_TYPE *watcher, callback)" 4 -.el .IP "\f(CWev_init\fR (ev_TYPE *watcher, callback)" 4 -.IX Item "ev_init (ev_TYPE *watcher, callback)" -This macro initialises the generic portion of a watcher. The contents -of the watcher object can be arbitrary (so \f(CW\*(C`malloc\*(C'\fR will do). Only -the generic parts of the watcher are initialised, you \fIneed\fR to call -the type-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR macro afterwards to initialise the -type-specific parts. For each type there is also a \f(CW\*(C`ev_TYPE_init\*(C'\fR macro -which rolls both calls into one. -.Sp -You can reinitialise a watcher at any time as long as it has been stopped -(or never started) and there are no pending events outstanding. -.Sp -The callback is always of type \f(CW\*(C`void (*)(ev_loop *loop, ev_TYPE *watcher, -int revents)\*(C'\fR. -.ie n .IP """ev_TYPE_set"" (ev_TYPE *, [args])" 4 -.el .IP "\f(CWev_TYPE_set\fR (ev_TYPE *, [args])" 4 -.IX Item "ev_TYPE_set (ev_TYPE *, [args])" -This macro initialises the type-specific parts of a watcher. You need to -call \f(CW\*(C`ev_init\*(C'\fR at least once before you call this macro, but you can -call \f(CW\*(C`ev_TYPE_set\*(C'\fR any number of times. You must not, however, call this -macro on a watcher that is active (it can be pending, however, which is a -difference to the \f(CW\*(C`ev_init\*(C'\fR macro). -.Sp -Although some watcher types do not have type-specific arguments -(e.g. \f(CW\*(C`ev_prepare\*(C'\fR) you still need to call its \f(CW\*(C`set\*(C'\fR macro. -.ie n .IP """ev_TYPE_init"" (ev_TYPE *watcher, callback, [args])" 4 -.el .IP "\f(CWev_TYPE_init\fR (ev_TYPE *watcher, callback, [args])" 4 -.IX Item "ev_TYPE_init (ev_TYPE *watcher, callback, [args])" -This convinience macro rolls both \f(CW\*(C`ev_init\*(C'\fR and \f(CW\*(C`ev_TYPE_set\*(C'\fR macro -calls into a single call. This is the most convinient method to initialise -a watcher. The same limitations apply, of course. -.ie n .IP """ev_TYPE_start"" (loop *, ev_TYPE *watcher)" 4 -.el .IP "\f(CWev_TYPE_start\fR (loop *, ev_TYPE *watcher)" 4 -.IX Item "ev_TYPE_start (loop *, ev_TYPE *watcher)" -Starts (activates) the given watcher. Only active watchers will receive -events. If the watcher is already active nothing will happen. -.ie n .IP """ev_TYPE_stop"" (loop *, ev_TYPE *watcher)" 4 -.el .IP "\f(CWev_TYPE_stop\fR (loop *, ev_TYPE *watcher)" 4 -.IX Item "ev_TYPE_stop (loop *, ev_TYPE *watcher)" -Stops the given watcher again (if active) and clears the pending -status. It is possible that stopped watchers are pending (for example, -non-repeating timers are being stopped when they become pending), but -\&\f(CW\*(C`ev_TYPE_stop\*(C'\fR ensures that the watcher is neither active nor pending. If -you want to free or reuse the memory used by the watcher it is therefore a -good idea to always call its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function. -.IP "bool ev_is_active (ev_TYPE *watcher)" 4 -.IX Item "bool ev_is_active (ev_TYPE *watcher)" -Returns a true value iff the watcher is active (i.e. it has been started -and not yet been stopped). As long as a watcher is active you must not modify -it. -.IP "bool ev_is_pending (ev_TYPE *watcher)" 4 -.IX Item "bool ev_is_pending (ev_TYPE *watcher)" -Returns a true value iff the watcher is pending, (i.e. it has outstanding -events but its callback has not yet been invoked). As long as a watcher -is pending (but not active) you must not call an init function on it (but -\&\f(CW\*(C`ev_TYPE_set\*(C'\fR is safe), you must not change its priority, and you must -make sure the watcher is available to libev (e.g. you cannot \f(CW\*(C`free ()\*(C'\fR -it). -.IP "callback ev_cb (ev_TYPE *watcher)" 4 -.IX Item "callback ev_cb (ev_TYPE *watcher)" -Returns the callback currently set on the watcher. -.IP "ev_cb_set (ev_TYPE *watcher, callback)" 4 -.IX Item "ev_cb_set (ev_TYPE *watcher, callback)" -Change the callback. You can change the callback at virtually any time -(modulo threads). -.IP "ev_set_priority (ev_TYPE *watcher, priority)" 4 -.IX Item "ev_set_priority (ev_TYPE *watcher, priority)" -.PD 0 -.IP "int ev_priority (ev_TYPE *watcher)" 4 -.IX Item "int ev_priority (ev_TYPE *watcher)" -.PD -Set and query the priority of the watcher. The priority is a small -integer between \f(CW\*(C`EV_MAXPRI\*(C'\fR (default: \f(CW2\fR) and \f(CW\*(C`EV_MINPRI\*(C'\fR -(default: \f(CW\*(C`\-2\*(C'\fR). Pending watchers with higher priority will be invoked -before watchers with lower priority, but priority will not keep watchers -from being executed (except for \f(CW\*(C`ev_idle\*(C'\fR watchers). -.Sp -This means that priorities are \fIonly\fR used for ordering callback -invocation after new events have been received. This is useful, for -example, to reduce latency after idling, or more often, to bind two -watchers on the same event and make sure one is called first. -.Sp -If you need to suppress invocation when higher priority events are pending -you need to look at \f(CW\*(C`ev_idle\*(C'\fR watchers, which provide this functionality. -.Sp -You \fImust not\fR change the priority of a watcher as long as it is active or -pending. -.Sp -The default priority used by watchers when no priority has been set is -always \f(CW0\fR, which is supposed to not be too high and not be too low :). -.Sp -Setting a priority outside the range of \f(CW\*(C`EV_MINPRI\*(C'\fR to \f(CW\*(C`EV_MAXPRI\*(C'\fR is -fine, as long as you do not mind that the priority value you query might -or might not have been adjusted to be within valid range. -.IP "ev_invoke (loop, ev_TYPE *watcher, int revents)" 4 -.IX Item "ev_invoke (loop, ev_TYPE *watcher, int revents)" -Invoke the \f(CW\*(C`watcher\*(C'\fR with the given \f(CW\*(C`loop\*(C'\fR and \f(CW\*(C`revents\*(C'\fR. Neither -\&\f(CW\*(C`loop\*(C'\fR nor \f(CW\*(C`revents\*(C'\fR need to be valid as long as the watcher callback -can deal with that fact. -.IP "int ev_clear_pending (loop, ev_TYPE *watcher)" 4 -.IX Item "int ev_clear_pending (loop, ev_TYPE *watcher)" -If the watcher is pending, this function returns clears its pending status -and returns its \f(CW\*(C`revents\*(C'\fR bitset (as if its callback was invoked). If the -watcher isn't pending it does nothing and returns \f(CW0\fR. -.Sh "\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0" -.IX Subsection "ASSOCIATING CUSTOM DATA WITH A WATCHER" -Each watcher has, by default, a member \f(CW\*(C`void *data\*(C'\fR that you can change -and read at any time, libev will completely ignore it. This can be used -to associate arbitrary data with your watcher. If you need more data and -don't want to allocate memory and store a pointer to it in that data -member, you can also \*(L"subclass\*(R" the watcher type and provide your own -data: -.PP -.Vb 7 -\& struct my_io -\& { -\& struct ev_io io; -\& int otherfd; -\& void *somedata; -\& struct whatever *mostinteresting; -\& } -.Ve -.PP -And since your callback will be called with a pointer to the watcher, you -can cast it back to your own type: -.PP -.Vb 5 -\& static void my_cb (struct ev_loop *loop, struct ev_io *w_, int revents) -\& { -\& struct my_io *w = (struct my_io *)w_; -\& ... -\& } -.Ve -.PP -More interesting and less C\-conformant ways of casting your callback type -instead have been omitted. -.PP -Another common scenario is having some data structure with multiple -watchers: -.PP -.Vb 6 -\& struct my_biggy -\& { -\& int some_data; -\& ev_timer t1; -\& ev_timer t2; -\& } -.Ve -.PP -In this case getting the pointer to \f(CW\*(C`my_biggy\*(C'\fR is a bit more complicated, -you need to use \f(CW\*(C`offsetof\*(C'\fR: -.PP -.Vb 1 -\& #include <stddef.h> -\& -\& static void -\& t1_cb (EV_P_ struct ev_timer *w, int revents) -\& { -\& struct my_biggy big = (struct my_biggy * -\& (((char *)w) \- offsetof (struct my_biggy, t1)); -\& } -\& -\& static void -\& t2_cb (EV_P_ struct ev_timer *w, int revents) -\& { -\& struct my_biggy big = (struct my_biggy * -\& (((char *)w) \- offsetof (struct my_biggy, t2)); -\& } -.Ve -.SH "WATCHER TYPES" -.IX Header "WATCHER TYPES" -This section describes each watcher in detail, but will not repeat -information given in the last section. Any initialisation/set macros, -functions and members specific to the watcher type are explained. -.PP -Members are additionally marked with either \fI[read\-only]\fR, meaning that, -while the watcher is active, you can look at the member and expect some -sensible content, but you must not modify it (you can modify it while the -watcher is stopped to your hearts content), or \fI[read\-write]\fR, which -means you can expect it to have some sensible content while the watcher -is active, but you can also modify it. Modifying it may not do something -sensible or take immediate effect (or do anything at all), but libev will -not crash or malfunction in any way. -.ie n .Sh """ev_io"" \- is this file descriptor readable or writable?" -.el .Sh "\f(CWev_io\fP \- is this file descriptor readable or writable?" -.IX Subsection "ev_io - is this file descriptor readable or writable?" -I/O watchers check whether a file descriptor is readable or writable -in each iteration of the event loop, or, more precisely, when reading -would not block the process and writing would at least be able to write -some data. This behaviour is called level-triggering because you keep -receiving events as long as the condition persists. Remember you can stop -the watcher if you don't want to act on the event and neither want to -receive future events. -.PP -In general you can register as many read and/or write event watchers per -fd as you want (as long as you don't confuse yourself). Setting all file -descriptors to non-blocking mode is also usually a good idea (but not -required if you know what you are doing). -.PP -If you must do this, then force the use of a known-to-be-good backend -(at the time of this writing, this includes only \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR and -\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR). -.PP -Another thing you have to watch out for is that it is quite easy to -receive \*(L"spurious\*(R" readyness notifications, that is your callback might -be called with \f(CW\*(C`EV_READ\*(C'\fR but a subsequent \f(CW\*(C`read\*(C'\fR(2) will actually block -because there is no data. Not only are some backends known to create a -lot of those (for example solaris ports), it is very easy to get into -this situation even with a relatively standard program structure. Thus -it is best to always use non-blocking I/O: An extra \f(CW\*(C`read\*(C'\fR(2) returning -\&\f(CW\*(C`EAGAIN\*(C'\fR is far preferable to a program hanging until some data arrives. -.PP -If you cannot run the fd in non-blocking mode (for example you should not -play around with an Xlib connection), then you have to seperately re-test -whether a file descriptor is really ready with a known-to-be good interface -such as poll (fortunately in our Xlib example, Xlib already does this on -its own, so its quite safe to use). -.PP -\fIThe special problem of disappearing file descriptors\fR -.IX Subsection "The special problem of disappearing file descriptors" -.PP -Some backends (e.g. kqueue, epoll) need to be told about closing a file -descriptor (either by calling \f(CW\*(C`close\*(C'\fR explicitly or by any other means, -such as \f(CW\*(C`dup\*(C'\fR). The reason is that you register interest in some file -descriptor, but when it goes away, the operating system will silently drop -this interest. If another file descriptor with the same number then is -registered with libev, there is no efficient way to see that this is, in -fact, a different file descriptor. -.PP -To avoid having to explicitly tell libev about such cases, libev follows -the following policy: Each time \f(CW\*(C`ev_io_set\*(C'\fR is being called, libev -will assume that this is potentially a new file descriptor, otherwise -it is assumed that the file descriptor stays the same. That means that -you \fIhave\fR to call \f(CW\*(C`ev_io_set\*(C'\fR (or \f(CW\*(C`ev_io_init\*(C'\fR) when you change the -descriptor even if the file descriptor number itself did not change. -.PP -This is how one would do it normally anyway, the important point is that -the libev application should not optimise around libev but should leave -optimisations to libev. -.PP -\fIThe special problem of dup'ed file descriptors\fR -.IX Subsection "The special problem of dup'ed file descriptors" -.PP -Some backends (e.g. epoll), cannot register events for file descriptors, -but only events for the underlying file descriptions. That means when you -have \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors or weirder constellations, and register -events for them, only one file descriptor might actually receive events. -.PP -There is no workaround possible except not registering events -for potentially \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors, or to resort to -\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.PP -\fIThe special problem of fork\fR -.IX Subsection "The special problem of fork" -.PP -Some backends (epoll, kqueue) do not support \f(CW\*(C`fork ()\*(C'\fR at all or exhibit -useless behaviour. Libev fully supports fork, but needs to be told about -it in the child. -.PP -To support fork in your programs, you either have to call -\&\f(CW\*(C`ev_default_fork ()\*(C'\fR or \f(CW\*(C`ev_loop_fork ()\*(C'\fR after a fork in the child, -enable \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR, or resort to \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or -\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR. -.PP -\fIThe special problem of \s-1SIGPIPE\s0\fR -.IX Subsection "The special problem of SIGPIPE" -.PP -While not really specific to libev, it is easy to forget about \s-1SIGPIPE:\s0 -when reading from a pipe whose other end has been closed, your program -gets send a \s-1SIGPIPE\s0, which, by default, aborts your program. For most -programs this is sensible behaviour, for daemons, this is usually -undesirable. -.PP -So when you encounter spurious, unexplained daemon exits, make sure you -ignore \s-1SIGPIPE\s0 (and maybe make sure you log the exit status of your daemon -somewhere, as that would have given you a big clue). -.PP -\fIWatcher-Specific Functions\fR -.IX Subsection "Watcher-Specific Functions" -.IP "ev_io_init (ev_io *, callback, int fd, int events)" 4 -.IX Item "ev_io_init (ev_io *, callback, int fd, int events)" -.PD 0 -.IP "ev_io_set (ev_io *, int fd, int events)" 4 -.IX Item "ev_io_set (ev_io *, int fd, int events)" -.PD -Configures an \f(CW\*(C`ev_io\*(C'\fR watcher. The \f(CW\*(C`fd\*(C'\fR is the file descriptor to -rceeive events for and events is either \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or -\&\f(CW\*(C`EV_READ | EV_WRITE\*(C'\fR to receive the given events. -.IP "int fd [read\-only]" 4 -.IX Item "int fd [read-only]" -The file descriptor being watched. -.IP "int events [read\-only]" 4 -.IX Item "int events [read-only]" -The events being watched. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Call \f(CW\*(C`stdin_readable_cb\*(C'\fR when \s-1STDIN_FILENO\s0 has become, well -readable, but only once. Since it is likely line-buffered, you could -attempt to read a whole line in the callback. -.PP -.Vb 6 -\& static void -\& stdin_readable_cb (struct ev_loop *loop, struct ev_io *w, int revents) -\& { -\& ev_io_stop (loop, w); -\& .. read from stdin here (or from w\->fd) and haqndle any I/O errors -\& } -\& -\& ... -\& struct ev_loop *loop = ev_default_init (0); -\& struct ev_io stdin_readable; -\& ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ); -\& ev_io_start (loop, &stdin_readable); -\& ev_loop (loop, 0); -.Ve -.ie n .Sh """ev_timer"" \- relative and optionally repeating timeouts" -.el .Sh "\f(CWev_timer\fP \- relative and optionally repeating timeouts" -.IX Subsection "ev_timer - relative and optionally repeating timeouts" -Timer watchers are simple relative timers that generate an event after a -given time, and optionally repeating in regular intervals after that. -.PP -The timers are based on real time, that is, if you register an event that -times out after an hour and you reset your system clock to last years -time, it will still time out after (roughly) and hour. \*(L"Roughly\*(R" because -detecting time jumps is hard, and some inaccuracies are unavoidable (the -monotonic clock option helps a lot here). -.PP -The relative timeouts are calculated relative to the \f(CW\*(C`ev_now ()\*(C'\fR -time. This is usually the right thing as this timestamp refers to the time -of the event triggering whatever timeout you are modifying/starting. If -you suspect event processing to be delayed and you \fIneed\fR to base the timeout -on the current time, use something like this to adjust for this: -.PP -.Vb 1 -\& ev_timer_set (&timer, after + ev_now () \- ev_time (), 0.); -.Ve -.PP -The callback is guarenteed to be invoked only when its timeout has passed, -but if multiple timers become ready during the same loop iteration then -order of execution is undefined. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" 4 -.IX Item "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" -.PD 0 -.IP "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" 4 -.IX Item "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" -.PD -Configure the timer to trigger after \f(CW\*(C`after\*(C'\fR seconds. If \f(CW\*(C`repeat\*(C'\fR is -\&\f(CW0.\fR, then it will automatically be stopped. If it is positive, then the -timer will automatically be configured to trigger again \f(CW\*(C`repeat\*(C'\fR seconds -later, again, and again, until stopped manually. -.Sp -The timer itself will do a best-effort at avoiding drift, that is, if you -configure a timer to trigger every 10 seconds, then it will trigger at -exactly 10 second intervals. If, however, your program cannot keep up with -the timer (because it takes longer than those 10 seconds to do stuff) the -timer will not fire more than once per event loop iteration. -.IP "ev_timer_again (loop, ev_timer *)" 4 -.IX Item "ev_timer_again (loop, ev_timer *)" -This will act as if the timer timed out and restart it again if it is -repeating. The exact semantics are: -.Sp -If the timer is pending, its pending status is cleared. -.Sp -If the timer is started but nonrepeating, stop it (as if it timed out). -.Sp -If the timer is repeating, either start it if necessary (with the -\&\f(CW\*(C`repeat\*(C'\fR value), or reset the running timer to the \f(CW\*(C`repeat\*(C'\fR value. -.Sp -This sounds a bit complicated, but here is a useful and typical -example: Imagine you have a tcp connection and you want a so-called idle -timeout, that is, you want to be called when there have been, say, 60 -seconds of inactivity on the socket. The easiest way to do this is to -configure an \f(CW\*(C`ev_timer\*(C'\fR with a \f(CW\*(C`repeat\*(C'\fR value of \f(CW60\fR and then call -\&\f(CW\*(C`ev_timer_again\*(C'\fR each time you successfully read or write some data. If -you go into an idle state where you do not expect data to travel on the -socket, you can \f(CW\*(C`ev_timer_stop\*(C'\fR the timer, and \f(CW\*(C`ev_timer_again\*(C'\fR will -automatically restart it if need be. -.Sp -That means you can ignore the \f(CW\*(C`after\*(C'\fR value and \f(CW\*(C`ev_timer_start\*(C'\fR -altogether and only ever use the \f(CW\*(C`repeat\*(C'\fR value and \f(CW\*(C`ev_timer_again\*(C'\fR: -.Sp -.Vb 8 -\& ev_timer_init (timer, callback, 0., 5.); -\& ev_timer_again (loop, timer); -\& ... -\& timer\->again = 17.; -\& ev_timer_again (loop, timer); -\& ... -\& timer\->again = 10.; -\& ev_timer_again (loop, timer); -.Ve -.Sp -This is more slightly efficient then stopping/starting the timer each time -you want to modify its timeout value. -.IP "ev_tstamp repeat [read\-write]" 4 -.IX Item "ev_tstamp repeat [read-write]" -The current \f(CW\*(C`repeat\*(C'\fR value. Will be used each time the watcher times out -or \f(CW\*(C`ev_timer_again\*(C'\fR is called and determines the next timeout (if any), -which is also when any modifications are taken into account. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Create a timer that fires after 60 seconds. -.PP -.Vb 5 -\& static void -\& one_minute_cb (struct ev_loop *loop, struct ev_timer *w, int revents) -\& { -\& .. one minute over, w is actually stopped right here -\& } -\& -\& struct ev_timer mytimer; -\& ev_timer_init (&mytimer, one_minute_cb, 60., 0.); -\& ev_timer_start (loop, &mytimer); -.Ve -.PP -Example: Create a timeout timer that times out after 10 seconds of -inactivity. -.PP -.Vb 5 -\& static void -\& timeout_cb (struct ev_loop *loop, struct ev_timer *w, int revents) -\& { -\& .. ten seconds without any activity -\& } -\& -\& struct ev_timer mytimer; -\& ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */ -\& ev_timer_again (&mytimer); /* start timer */ -\& ev_loop (loop, 0); -\& -\& // and in some piece of code that gets executed on any "activity": -\& // reset the timeout to start ticking again at 10 seconds -\& ev_timer_again (&mytimer); -.Ve -.ie n .Sh """ev_periodic"" \- to cron or not to cron?" -.el .Sh "\f(CWev_periodic\fP \- to cron or not to cron?" -.IX Subsection "ev_periodic - to cron or not to cron?" -Periodic watchers are also timers of a kind, but they are very versatile -(and unfortunately a bit complex). -.PP -Unlike \f(CW\*(C`ev_timer\*(C'\fR's, they are not based on real time (or relative time) -but on wallclock time (absolute time). You can tell a periodic watcher -to trigger \*(L"at\*(R" some specific point in time. For example, if you tell a -periodic watcher to trigger in 10 seconds (by specifiying e.g. \f(CW\*(C`ev_now () -+ 10.\*(C'\fR) and then reset your system clock to the last year, then it will -take a year to trigger the event (unlike an \f(CW\*(C`ev_timer\*(C'\fR, which would trigger -roughly 10 seconds later). -.PP -They can also be used to implement vastly more complex timers, such as -triggering an event on each midnight, local time or other, complicated, -rules. -.PP -As with timers, the callback is guarenteed to be invoked only when the -time (\f(CW\*(C`at\*(C'\fR) has been passed, but if multiple periodic timers become ready -during the same loop iteration then order of execution is undefined. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_periodic_init (ev_periodic *, callback, ev_tstamp at, ev_tstamp interval, reschedule_cb)" 4 -.IX Item "ev_periodic_init (ev_periodic *, callback, ev_tstamp at, ev_tstamp interval, reschedule_cb)" -.PD 0 -.IP "ev_periodic_set (ev_periodic *, ev_tstamp after, ev_tstamp repeat, reschedule_cb)" 4 -.IX Item "ev_periodic_set (ev_periodic *, ev_tstamp after, ev_tstamp repeat, reschedule_cb)" -.PD -Lots of arguments, lets sort it out... There are basically three modes of -operation, and we will explain them from simplest to complex: -.RS 4 -.IP "\(bu" 4 -absolute timer (at = time, interval = reschedule_cb = 0) -.Sp -In this configuration the watcher triggers an event at the wallclock time -\&\f(CW\*(C`at\*(C'\fR and doesn't repeat. It will not adjust when a time jump occurs, -that is, if it is to be run at January 1st 2011 then it will run when the -system time reaches or surpasses this time. -.IP "\(bu" 4 -repeating interval timer (at = offset, interval > 0, reschedule_cb = 0) -.Sp -In this mode the watcher will always be scheduled to time out at the next -\&\f(CW\*(C`at + N * interval\*(C'\fR time (for some integer N, which can also be negative) -and then repeat, regardless of any time jumps. -.Sp -This can be used to create timers that do not drift with respect to system -time: -.Sp -.Vb 1 -\& ev_periodic_set (&periodic, 0., 3600., 0); -.Ve -.Sp -This doesn't mean there will always be 3600 seconds in between triggers, -but only that the the callback will be called when the system time shows a -full hour (\s-1UTC\s0), or more correctly, when the system time is evenly divisible -by 3600. -.Sp -Another way to think about it (for the mathematically inclined) is that -\&\f(CW\*(C`ev_periodic\*(C'\fR will try to run the callback in this mode at the next possible -time where \f(CW\*(C`time = at (mod interval)\*(C'\fR, regardless of any time jumps. -.Sp -For numerical stability it is preferable that the \f(CW\*(C`at\*(C'\fR value is near -\&\f(CW\*(C`ev_now ()\*(C'\fR (the current time), but there is no range requirement for -this value. -.IP "\(bu" 4 -manual reschedule mode (at and interval ignored, reschedule_cb = callback) -.Sp -In this mode the values for \f(CW\*(C`interval\*(C'\fR and \f(CW\*(C`at\*(C'\fR are both being -ignored. Instead, each time the periodic watcher gets scheduled, the -reschedule callback will be called with the watcher as first, and the -current time as second argument. -.Sp -\&\s-1NOTE:\s0 \fIThis callback \s-1MUST\s0 \s-1NOT\s0 stop or destroy any periodic watcher, -ever, or make any event loop modifications\fR. If you need to stop it, -return \f(CW\*(C`now + 1e30\*(C'\fR (or so, fudge fudge) and stop it afterwards (e.g. by -starting an \f(CW\*(C`ev_prepare\*(C'\fR watcher, which is legal). -.Sp -Its prototype is \f(CW\*(C`ev_tstamp (*reschedule_cb)(struct ev_periodic *w, -ev_tstamp now)\*(C'\fR, e.g.: -.Sp -.Vb 4 -\& static ev_tstamp my_rescheduler (struct ev_periodic *w, ev_tstamp now) -\& { -\& return now + 60.; -\& } -.Ve -.Sp -It must return the next time to trigger, based on the passed time value -(that is, the lowest time value larger than to the second argument). It -will usually be called just before the callback will be triggered, but -might be called at other times, too. -.Sp -\&\s-1NOTE:\s0 \fIThis callback must always return a time that is later than the -passed \f(CI\*(C`now\*(C'\fI value\fR. Not even \f(CW\*(C`now\*(C'\fR itself will do, it \fImust\fR be larger. -.Sp -This can be used to create very complex timers, such as a timer that -triggers on each midnight, local time. To do this, you would calculate the -next midnight after \f(CW\*(C`now\*(C'\fR and return the timestamp value for this. How -you do this is, again, up to you (but it is not trivial, which is the main -reason I omitted it as an example). -.RE -.RS 4 -.RE -.IP "ev_periodic_again (loop, ev_periodic *)" 4 -.IX Item "ev_periodic_again (loop, ev_periodic *)" -Simply stops and restarts the periodic watcher again. This is only useful -when you changed some parameters or the reschedule callback would return -a different time than the last time it was called (e.g. in a crond like -program when the crontabs have changed). -.IP "ev_tstamp ev_periodic_at (ev_periodic *)" 4 -.IX Item "ev_tstamp ev_periodic_at (ev_periodic *)" -When active, returns the absolute time that the watcher is supposed to -trigger next. -.IP "ev_tstamp offset [read\-write]" 4 -.IX Item "ev_tstamp offset [read-write]" -When repeating, this contains the offset value, otherwise this is the -absolute point in time (the \f(CW\*(C`at\*(C'\fR value passed to \f(CW\*(C`ev_periodic_set\*(C'\fR). -.Sp -Can be modified any time, but changes only take effect when the periodic -timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called. -.IP "ev_tstamp interval [read\-write]" 4 -.IX Item "ev_tstamp interval [read-write]" -The current interval value. Can be modified any time, but changes only -take effect when the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being -called. -.IP "ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) [read\-write]" 4 -.IX Item "ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) [read-write]" -The current reschedule callback, or \f(CW0\fR, if this functionality is -switched off. Can be changed any time, but changes only take effect when -the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Call a callback every hour, or, more precisely, whenever the -system clock is divisible by 3600. The callback invocation times have -potentially a lot of jittering, but good long-term stability. -.PP -.Vb 5 -\& static void -\& clock_cb (struct ev_loop *loop, struct ev_io *w, int revents) -\& { -\& ... its now a full hour (UTC, or TAI or whatever your clock follows) -\& } -\& -\& struct ev_periodic hourly_tick; -\& ev_periodic_init (&hourly_tick, clock_cb, 0., 3600., 0); -\& ev_periodic_start (loop, &hourly_tick); -.Ve -.PP -Example: The same as above, but use a reschedule callback to do it: -.PP -.Vb 1 -\& #include <math.h> -\& -\& static ev_tstamp -\& my_scheduler_cb (struct ev_periodic *w, ev_tstamp now) -\& { -\& return fmod (now, 3600.) + 3600.; -\& } -\& -\& ev_periodic_init (&hourly_tick, clock_cb, 0., 0., my_scheduler_cb); -.Ve -.PP -Example: Call a callback every hour, starting now: -.PP -.Vb 4 -\& struct ev_periodic hourly_tick; -\& ev_periodic_init (&hourly_tick, clock_cb, -\& fmod (ev_now (loop), 3600.), 3600., 0); -\& ev_periodic_start (loop, &hourly_tick); -.Ve -.ie n .Sh """ev_signal"" \- signal me when a signal gets signalled!" -.el .Sh "\f(CWev_signal\fP \- signal me when a signal gets signalled!" -.IX Subsection "ev_signal - signal me when a signal gets signalled!" -Signal watchers will trigger an event when the process receives a specific -signal one or more times. Even though signals are very asynchronous, libev -will try it's best to deliver signals synchronously, i.e. as part of the -normal event processing, like any other event. -.PP -You can configure as many watchers as you like per signal. Only when the -first watcher gets started will libev actually register a signal watcher -with the kernel (thus it coexists with your own signal handlers as long -as you don't register any with libev). Similarly, when the last signal -watcher for a signal is stopped libev will reset the signal handler to -\&\s-1SIG_DFL\s0 (regardless of what it was set to before). -.PP -If possible and supported, libev will install its handlers with -\&\f(CW\*(C`SA_RESTART\*(C'\fR behaviour enabled, so syscalls should not be unduly -interrupted. If you have a problem with syscalls getting interrupted by -signals you can block all signals in an \f(CW\*(C`ev_check\*(C'\fR watcher and unblock -them in an \f(CW\*(C`ev_prepare\*(C'\fR watcher. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_signal_init (ev_signal *, callback, int signum)" 4 -.IX Item "ev_signal_init (ev_signal *, callback, int signum)" -.PD 0 -.IP "ev_signal_set (ev_signal *, int signum)" 4 -.IX Item "ev_signal_set (ev_signal *, int signum)" -.PD -Configures the watcher to trigger on the given signal number (usually one -of the \f(CW\*(C`SIGxxx\*(C'\fR constants). -.IP "int signum [read\-only]" 4 -.IX Item "int signum [read-only]" -The signal the watcher watches out for. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Try to exit cleanly on \s-1SIGINT\s0 and \s-1SIGTERM\s0. -.PP -.Vb 5 -\& static void -\& sigint_cb (struct ev_loop *loop, struct ev_signal *w, int revents) -\& { -\& ev_unloop (loop, EVUNLOOP_ALL); -\& } -\& -\& struct ev_signal signal_watcher; -\& ev_signal_init (&signal_watcher, sigint_cb, SIGINT); -\& ev_signal_start (loop, &sigint_cb); -.Ve -.ie n .Sh """ev_child"" \- watch out for process status changes" -.el .Sh "\f(CWev_child\fP \- watch out for process status changes" -.IX Subsection "ev_child - watch out for process status changes" -Child watchers trigger when your process receives a \s-1SIGCHLD\s0 in response to -some child status changes (most typically when a child of yours dies). It -is permissible to install a child watcher \fIafter\fR the child has been -forked (which implies it might have already exited), as long as the event -loop isn't entered (or is continued from a watcher). -.PP -Only the default event loop is capable of handling signals, and therefore -you can only rgeister child watchers in the default event loop. -.PP -\fIProcess Interaction\fR -.IX Subsection "Process Interaction" -.PP -Libev grabs \f(CW\*(C`SIGCHLD\*(C'\fR as soon as the default event loop is -initialised. This is necessary to guarantee proper behaviour even if -the first child watcher is started after the child exits. The occurance -of \f(CW\*(C`SIGCHLD\*(C'\fR is recorded asynchronously, but child reaping is done -synchronously as part of the event loop processing. Libev always reaps all -children, even ones not watched. -.PP -\fIOverriding the Built-In Processing\fR -.IX Subsection "Overriding the Built-In Processing" -.PP -Libev offers no special support for overriding the built-in child -processing, but if your application collides with libev's default child -handler, you can override it easily by installing your own handler for -\&\f(CW\*(C`SIGCHLD\*(C'\fR after initialising the default loop, and making sure the -default loop never gets destroyed. You are encouraged, however, to use an -event-based approach to child reaping and thus use libev's support for -that, so other libev users can use \f(CW\*(C`ev_child\*(C'\fR watchers freely. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_child_init (ev_child *, callback, int pid, int trace)" 4 -.IX Item "ev_child_init (ev_child *, callback, int pid, int trace)" -.PD 0 -.IP "ev_child_set (ev_child *, int pid, int trace)" 4 -.IX Item "ev_child_set (ev_child *, int pid, int trace)" -.PD -Configures the watcher to wait for status changes of process \f(CW\*(C`pid\*(C'\fR (or -\&\fIany\fR process if \f(CW\*(C`pid\*(C'\fR is specified as \f(CW0\fR). The callback can look -at the \f(CW\*(C`rstatus\*(C'\fR member of the \f(CW\*(C`ev_child\*(C'\fR watcher structure to see -the status word (use the macros from \f(CW\*(C`sys/wait.h\*(C'\fR and see your systems -\&\f(CW\*(C`waitpid\*(C'\fR documentation). The \f(CW\*(C`rpid\*(C'\fR member contains the pid of the -process causing the status change. \f(CW\*(C`trace\*(C'\fR must be either \f(CW0\fR (only -activate the watcher when the process terminates) or \f(CW1\fR (additionally -activate the watcher when the process is stopped or continued). -.IP "int pid [read\-only]" 4 -.IX Item "int pid [read-only]" -The process id this watcher watches out for, or \f(CW0\fR, meaning any process id. -.IP "int rpid [read\-write]" 4 -.IX Item "int rpid [read-write]" -The process id that detected a status change. -.IP "int rstatus [read\-write]" 4 -.IX Item "int rstatus [read-write]" -The process exit/trace status caused by \f(CW\*(C`rpid\*(C'\fR (see your systems -\&\f(CW\*(C`waitpid\*(C'\fR and \f(CW\*(C`sys/wait.h\*(C'\fR documentation for details). -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: \f(CW\*(C`fork()\*(C'\fR a new process and install a child handler to wait for -its completion. -.PP -.Vb 1 -\& ev_child cw; -\& -\& static void -\& child_cb (EV_P_ struct ev_child *w, int revents) -\& { -\& ev_child_stop (EV_A_ w); -\& printf ("process %d exited with status %x\en", w\->rpid, w\->rstatus); -\& } -\& -\& pid_t pid = fork (); -\& -\& if (pid < 0) -\& // error -\& else if (pid == 0) -\& { -\& // the forked child executes here -\& exit (1); -\& } -\& else -\& { -\& ev_child_init (&cw, child_cb, pid, 0); -\& ev_child_start (EV_DEFAULT_ &cw); -\& } -.Ve -.ie n .Sh """ev_stat"" \- did the file attributes just change?" -.el .Sh "\f(CWev_stat\fP \- did the file attributes just change?" -.IX Subsection "ev_stat - did the file attributes just change?" -This watches a filesystem path for attribute changes. That is, it calls -\&\f(CW\*(C`stat\*(C'\fR regularly (or when the \s-1OS\s0 says it changed) and sees if it changed -compared to the last time, invoking the callback if it did. -.PP -The path does not need to exist: changing from \*(L"path exists\*(R" to \*(L"path does -not exist\*(R" is a status change like any other. The condition \*(L"path does -not exist\*(R" is signified by the \f(CW\*(C`st_nlink\*(C'\fR field being zero (which is -otherwise always forced to be at least one) and all the other fields of -the stat buffer having unspecified contents. -.PP -The path \fIshould\fR be absolute and \fImust not\fR end in a slash. If it is -relative and your working directory changes, the behaviour is undefined. -.PP -Since there is no standard to do this, the portable implementation simply -calls \f(CW\*(C`stat (2)\*(C'\fR regularly on the path to see if it changed somehow. You -can specify a recommended polling interval for this case. If you specify -a polling interval of \f(CW0\fR (highly recommended!) then a \fIsuitable, -unspecified default\fR value will be used (which you can expect to be around -five seconds, although this might change dynamically). Libev will also -impose a minimum interval which is currently around \f(CW0.1\fR, but thats -usually overkill. -.PP -This watcher type is not meant for massive numbers of stat watchers, -as even with OS-supported change notifications, this can be -resource-intensive. -.PP -At the time of this writing, only the Linux inotify interface is -implemented (implementing kqueue support is left as an exercise for the -reader, note, however, that the author sees no way of implementing ev_stat -semantics with kqueue). Inotify will be used to give hints only and should -not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers, which means that libev -sometimes needs to fall back to regular polling again even with inotify, -but changes are usually detected immediately, and if the file exists there -will be no polling. -.PP -\fI\s-1ABI\s0 Issues (Largefile Support)\fR -.IX Subsection "ABI Issues (Largefile Support)" -.PP -Libev by default (unless the user overrides this) uses the default -compilation environment, which means that on systems with optionally -disabled large file support, you get the 32 bit version of the stat -structure. When using the library from programs that change the \s-1ABI\s0 to -use 64 bit file offsets the programs will fail. In that case you have to -compile libev with the same flags to get binary compatibility. This is -obviously the case with any flags that change the \s-1ABI\s0, but the problem is -most noticably with ev_stat and largefile support. -.PP -\fIInotify\fR -.IX Subsection "Inotify" -.PP -When \f(CW\*(C`inotify (7)\*(C'\fR support has been compiled into libev (generally only -available on Linux) and present at runtime, it will be used to speed up -change detection where possible. The inotify descriptor will be created lazily -when the first \f(CW\*(C`ev_stat\*(C'\fR watcher is being started. -.PP -Inotify presence does not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers -except that changes might be detected earlier, and in some cases, to avoid -making regular \f(CW\*(C`stat\*(C'\fR calls. Even in the presence of inotify support -there are many cases where libev has to resort to regular \f(CW\*(C`stat\*(C'\fR polling. -.PP -(There is no support for kqueue, as apparently it cannot be used to -implement this functionality, due to the requirement of having a file -descriptor open on the object at all times). -.PP -\fIThe special problem of stat time resolution\fR -.IX Subsection "The special problem of stat time resolution" -.PP -The \f(CW\*(C`stat ()\*(C'\fR syscall only supports full-second resolution portably, and -even on systems where the resolution is higher, many filesystems still -only support whole seconds. -.PP -That means that, if the time is the only thing that changes, you can -easily miss updates: on the first update, \f(CW\*(C`ev_stat\*(C'\fR detects a change and -calls your callback, which does something. When there is another update -within the same second, \f(CW\*(C`ev_stat\*(C'\fR will be unable to detect it as the stat -data does not change. -.PP -The solution to this is to delay acting on a change for slightly more -than second (or till slightly after the next full second boundary), using -a roughly one-second-delay \f(CW\*(C`ev_timer\*(C'\fR (e.g. \f(CW\*(C`ev_timer_set (w, 0., 1.02); -ev_timer_again (loop, w)\*(C'\fR). -.PP -The \f(CW.02\fR offset is added to work around small timing inconsistencies -of some operating systems (where the second counter of the current time -might be be delayed. One such system is the Linux kernel, where a call to -\&\f(CW\*(C`gettimeofday\*(C'\fR might return a timestamp with a full second later than -a subsequent \f(CW\*(C`time\*(C'\fR call \- if the equivalent of \f(CW\*(C`time ()\*(C'\fR is used to -update file times then there will be a small window where the kernel uses -the previous second to update file times but libev might already execute -the timer callback). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" 4 -.IX Item "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" -.PD 0 -.IP "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" 4 -.IX Item "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" -.PD -Configures the watcher to wait for status changes of the given -\&\f(CW\*(C`path\*(C'\fR. The \f(CW\*(C`interval\*(C'\fR is a hint on how quickly a change is expected to -be detected and should normally be specified as \f(CW0\fR to let libev choose -a suitable value. The memory pointed to by \f(CW\*(C`path\*(C'\fR must point to the same -path for as long as the watcher is active. -.Sp -The callback will receive \f(CW\*(C`EV_STAT\*(C'\fR when a change was detected, relative -to the attributes at the time the watcher was started (or the last change -was detected). -.IP "ev_stat_stat (loop, ev_stat *)" 4 -.IX Item "ev_stat_stat (loop, ev_stat *)" -Updates the stat buffer immediately with new values. If you change the -watched path in your callback, you could call this function to avoid -detecting this change (while introducing a race condition if you are not -the only one changing the path). Can also be useful simply to find out the -new values. -.IP "ev_statdata attr [read\-only]" 4 -.IX Item "ev_statdata attr [read-only]" -The most-recently detected attributes of the file. Although the type is -\&\f(CW\*(C`ev_statdata\*(C'\fR, this is usually the (or one of the) \f(CW\*(C`struct stat\*(C'\fR types -suitable for your system, but you can only rely on the POSIX-standardised -members to be present. If the \f(CW\*(C`st_nlink\*(C'\fR member is \f(CW0\fR, then there was -some error while \f(CW\*(C`stat\*(C'\fRing the file. -.IP "ev_statdata prev [read\-only]" 4 -.IX Item "ev_statdata prev [read-only]" -The previous attributes of the file. The callback gets invoked whenever -\&\f(CW\*(C`prev\*(C'\fR != \f(CW\*(C`attr\*(C'\fR, or, more precisely, one or more of these members -differ: \f(CW\*(C`st_dev\*(C'\fR, \f(CW\*(C`st_ino\*(C'\fR, \f(CW\*(C`st_mode\*(C'\fR, \f(CW\*(C`st_nlink\*(C'\fR, \f(CW\*(C`st_uid\*(C'\fR, -\&\f(CW\*(C`st_gid\*(C'\fR, \f(CW\*(C`st_rdev\*(C'\fR, \f(CW\*(C`st_size\*(C'\fR, \f(CW\*(C`st_atime\*(C'\fR, \f(CW\*(C`st_mtime\*(C'\fR, \f(CW\*(C`st_ctime\*(C'\fR. -.IP "ev_tstamp interval [read\-only]" 4 -.IX Item "ev_tstamp interval [read-only]" -The specified interval. -.IP "const char *path [read\-only]" 4 -.IX Item "const char *path [read-only]" -The filesystem path that is being watched. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Watch \f(CW\*(C`/etc/passwd\*(C'\fR for attribute changes. -.PP -.Vb 10 -\& static void -\& passwd_cb (struct ev_loop *loop, ev_stat *w, int revents) -\& { -\& /* /etc/passwd changed in some way */ -\& if (w\->attr.st_nlink) -\& { -\& printf ("passwd current size %ld\en", (long)w\->attr.st_size); -\& printf ("passwd current atime %ld\en", (long)w\->attr.st_mtime); -\& printf ("passwd current mtime %ld\en", (long)w\->attr.st_mtime); -\& } -\& else -\& /* you shalt not abuse printf for puts */ -\& puts ("wow, /etc/passwd is not there, expect problems. " -\& "if this is windows, they already arrived\en"); -\& } -\& -\& ... -\& ev_stat passwd; -\& -\& ev_stat_init (&passwd, passwd_cb, "/etc/passwd", 0.); -\& ev_stat_start (loop, &passwd); -.Ve -.PP -Example: Like above, but additionally use a one-second delay so we do not -miss updates (however, frequent updates will delay processing, too, so -one might do the work both on \f(CW\*(C`ev_stat\*(C'\fR callback invocation \fIand\fR on -\&\f(CW\*(C`ev_timer\*(C'\fR callback invocation). -.PP -.Vb 2 -\& static ev_stat passwd; -\& static ev_timer timer; -\& -\& static void -\& timer_cb (EV_P_ ev_timer *w, int revents) -\& { -\& ev_timer_stop (EV_A_ w); -\& -\& /* now it\*(Aqs one second after the most recent passwd change */ -\& } -\& -\& static void -\& stat_cb (EV_P_ ev_stat *w, int revents) -\& { -\& /* reset the one\-second timer */ -\& ev_timer_again (EV_A_ &timer); -\& } -\& -\& ... -\& ev_stat_init (&passwd, stat_cb, "/etc/passwd", 0.); -\& ev_stat_start (loop, &passwd); -\& ev_timer_init (&timer, timer_cb, 0., 1.02); -.Ve -.ie n .Sh """ev_idle"" \- when you've got nothing better to do..." -.el .Sh "\f(CWev_idle\fP \- when you've got nothing better to do..." -.IX Subsection "ev_idle - when you've got nothing better to do..." -Idle watchers trigger events when no other events of the same or higher -priority are pending (prepare, check and other idle watchers do not -count). -.PP -That is, as long as your process is busy handling sockets or timeouts -(or even signals, imagine) of the same or higher priority it will not be -triggered. But when your process is idle (or only lower-priority watchers -are pending), the idle watchers are being called once per event loop -iteration \- until stopped, that is, or your process receives more events -and becomes busy again with higher priority stuff. -.PP -The most noteworthy effect is that as long as any idle watchers are -active, the process will not block when waiting for new events. -.PP -Apart from keeping your process non-blocking (which is a useful -effect on its own sometimes), idle watchers are a good place to do -\&\*(L"pseudo-background processing\*(R", or delay processing stuff to after the -event loop has handled all outstanding events. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_idle_init (ev_signal *, callback)" 4 -.IX Item "ev_idle_init (ev_signal *, callback)" -Initialises and configures the idle watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_idle_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Dynamically allocate an \f(CW\*(C`ev_idle\*(C'\fR watcher, start it, and in the -callback, free it. Also, use no error checking, as usual. -.PP -.Vb 7 -\& static void -\& idle_cb (struct ev_loop *loop, struct ev_idle *w, int revents) -\& { -\& free (w); -\& // now do something you wanted to do when the program has -\& // no longer anything immediate to do. -\& } -\& -\& struct ev_idle *idle_watcher = malloc (sizeof (struct ev_idle)); -\& ev_idle_init (idle_watcher, idle_cb); -\& ev_idle_start (loop, idle_cb); -.Ve -.ie n .Sh """ev_prepare""\fP and \f(CW""ev_check"" \- customise your event loop!" -.el .Sh "\f(CWev_prepare\fP and \f(CWev_check\fP \- customise your event loop!" -.IX Subsection "ev_prepare and ev_check - customise your event loop!" -Prepare and check watchers are usually (but not always) used in tandem: -prepare watchers get invoked before the process blocks and check watchers -afterwards. -.PP -You \fImust not\fR call \f(CW\*(C`ev_loop\*(C'\fR or similar functions that enter -the current event loop from either \f(CW\*(C`ev_prepare\*(C'\fR or \f(CW\*(C`ev_check\*(C'\fR -watchers. Other loops than the current one are fine, however. The -rationale behind this is that you do not need to check for recursion in -those watchers, i.e. the sequence will always be \f(CW\*(C`ev_prepare\*(C'\fR, blocking, -\&\f(CW\*(C`ev_check\*(C'\fR so if you have one watcher of each kind they will always be -called in pairs bracketing the blocking call. -.PP -Their main purpose is to integrate other event mechanisms into libev and -their use is somewhat advanced. This could be used, for example, to track -variable changes, implement your own watchers, integrate net-snmp or a -coroutine library and lots more. They are also occasionally useful if -you cache some data and want to flush it before blocking (for example, -in X programs you might want to do an \f(CW\*(C`XFlush ()\*(C'\fR in an \f(CW\*(C`ev_prepare\*(C'\fR -watcher). -.PP -This is done by examining in each prepare call which file descriptors need -to be watched by the other library, registering \f(CW\*(C`ev_io\*(C'\fR watchers for -them and starting an \f(CW\*(C`ev_timer\*(C'\fR watcher for any timeouts (many libraries -provide just this functionality). Then, in the check watcher you check for -any events that occured (by checking the pending status of all watchers -and stopping them) and call back into the library. The I/O and timer -callbacks will never actually be called (but must be valid nevertheless, -because you never know, you know?). -.PP -As another example, the Perl Coro module uses these hooks to integrate -coroutines into libev programs, by yielding to other active coroutines -during each prepare and only letting the process block if no coroutines -are ready to run (it's actually more complicated: it only runs coroutines -with priority higher than or equal to the event loop and one coroutine -of lower priority, but only once, using idle watchers to keep the event -loop from blocking if lower-priority coroutines are active, thus mapping -low-priority coroutines to idle/background tasks). -.PP -It is recommended to give \f(CW\*(C`ev_check\*(C'\fR watchers highest (\f(CW\*(C`EV_MAXPRI\*(C'\fR) -priority, to ensure that they are being run before any other watchers -after the poll. Also, \f(CW\*(C`ev_check\*(C'\fR watchers (and \f(CW\*(C`ev_prepare\*(C'\fR watchers, -too) should not activate (\*(L"feed\*(R") events into libev. While libev fully -supports this, they might get executed before other \f(CW\*(C`ev_check\*(C'\fR watchers -did their job. As \f(CW\*(C`ev_check\*(C'\fR watchers are often used to embed other -(non-libev) event loops those other event loops might be in an unusable -state until their \f(CW\*(C`ev_check\*(C'\fR watcher ran (always remind yourself to -coexist peacefully with others). -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_prepare_init (ev_prepare *, callback)" 4 -.IX Item "ev_prepare_init (ev_prepare *, callback)" -.PD 0 -.IP "ev_check_init (ev_check *, callback)" 4 -.IX Item "ev_check_init (ev_check *, callback)" -.PD -Initialises and configures the prepare or check watcher \- they have no -parameters of any kind. There are \f(CW\*(C`ev_prepare_set\*(C'\fR and \f(CW\*(C`ev_check_set\*(C'\fR -macros, but using them is utterly, utterly and completely pointless. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -There are a number of principal ways to embed other event loops or modules -into libev. Here are some ideas on how to include libadns into libev -(there is a Perl module named \f(CW\*(C`EV::ADNS\*(C'\fR that does this, which you could -use as a working example. Another Perl module named \f(CW\*(C`EV::Glib\*(C'\fR embeds a -Glib main context into libev, and finally, \f(CW\*(C`Glib::EV\*(C'\fR embeds \s-1EV\s0 into the -Glib event loop). -.PP -Method 1: Add \s-1IO\s0 watchers and a timeout watcher in a prepare handler, -and in a check watcher, destroy them and call into libadns. What follows -is pseudo-code only of course. This requires you to either use a low -priority for the check watcher or use \f(CW\*(C`ev_clear_pending\*(C'\fR explicitly, as -the callbacks for the IO/timeout watchers might not have been called yet. -.PP -.Vb 2 -\& static ev_io iow [nfd]; -\& static ev_timer tw; -\& -\& static void -\& io_cb (ev_loop *loop, ev_io *w, int revents) -\& { -\& } -\& -\& // create io watchers for each fd and a timer before blocking -\& static void -\& adns_prepare_cb (ev_loop *loop, ev_prepare *w, int revents) -\& { -\& int timeout = 3600000; -\& struct pollfd fds [nfd]; -\& // actual code will need to loop here and realloc etc. -\& adns_beforepoll (ads, fds, &nfd, &timeout, timeval_from (ev_time ())); -\& -\& /* the callback is illegal, but won\*(Aqt be called as we stop during check */ -\& ev_timer_init (&tw, 0, timeout * 1e\-3); -\& ev_timer_start (loop, &tw); -\& -\& // create one ev_io per pollfd -\& for (int i = 0; i < nfd; ++i) -\& { -\& ev_io_init (iow + i, io_cb, fds [i].fd, -\& ((fds [i].events & POLLIN ? EV_READ : 0) -\& | (fds [i].events & POLLOUT ? EV_WRITE : 0))); -\& -\& fds [i].revents = 0; -\& ev_io_start (loop, iow + i); -\& } -\& } -\& -\& // stop all watchers after blocking -\& static void -\& adns_check_cb (ev_loop *loop, ev_check *w, int revents) -\& { -\& ev_timer_stop (loop, &tw); -\& -\& for (int i = 0; i < nfd; ++i) -\& { -\& // set the relevant poll flags -\& // could also call adns_processreadable etc. here -\& struct pollfd *fd = fds + i; -\& int revents = ev_clear_pending (iow + i); -\& if (revents & EV_READ ) fd\->revents |= fd\->events & POLLIN; -\& if (revents & EV_WRITE) fd\->revents |= fd\->events & POLLOUT; -\& -\& // now stop the watcher -\& ev_io_stop (loop, iow + i); -\& } -\& -\& adns_afterpoll (adns, fds, nfd, timeval_from (ev_now (loop)); -\& } -.Ve -.PP -Method 2: This would be just like method 1, but you run \f(CW\*(C`adns_afterpoll\*(C'\fR -in the prepare watcher and would dispose of the check watcher. -.PP -Method 3: If the module to be embedded supports explicit event -notification (adns does), you can also make use of the actual watcher -callbacks, and only destroy/create the watchers in the prepare watcher. -.PP -.Vb 5 -\& static void -\& timer_cb (EV_P_ ev_timer *w, int revents) -\& { -\& adns_state ads = (adns_state)w\->data; -\& update_now (EV_A); -\& -\& adns_processtimeouts (ads, &tv_now); -\& } -\& -\& static void -\& io_cb (EV_P_ ev_io *w, int revents) -\& { -\& adns_state ads = (adns_state)w\->data; -\& update_now (EV_A); -\& -\& if (revents & EV_READ ) adns_processreadable (ads, w\->fd, &tv_now); -\& if (revents & EV_WRITE) adns_processwriteable (ads, w\->fd, &tv_now); -\& } -\& -\& // do not ever call adns_afterpoll -.Ve -.PP -Method 4: Do not use a prepare or check watcher because the module you -want to embed is too inflexible to support it. Instead, youc na override -their poll function. The drawback with this solution is that the main -loop is now no longer controllable by \s-1EV\s0. The \f(CW\*(C`Glib::EV\*(C'\fR module does -this. -.PP -.Vb 4 -\& static gint -\& event_poll_func (GPollFD *fds, guint nfds, gint timeout) -\& { -\& int got_events = 0; -\& -\& for (n = 0; n < nfds; ++n) -\& // create/start io watcher that sets the relevant bits in fds[n] and increment got_events -\& -\& if (timeout >= 0) -\& // create/start timer -\& -\& // poll -\& ev_loop (EV_A_ 0); -\& -\& // stop timer again -\& if (timeout >= 0) -\& ev_timer_stop (EV_A_ &to); -\& -\& // stop io watchers again \- their callbacks should have set -\& for (n = 0; n < nfds; ++n) -\& ev_io_stop (EV_A_ iow [n]); -\& -\& return got_events; -\& } -.Ve -.ie n .Sh """ev_embed"" \- when one backend isn't enough..." -.el .Sh "\f(CWev_embed\fP \- when one backend isn't enough..." -.IX Subsection "ev_embed - when one backend isn't enough..." -This is a rather advanced watcher type that lets you embed one event loop -into another (currently only \f(CW\*(C`ev_io\*(C'\fR events are supported in the embedded -loop, other types of watchers might be handled in a delayed or incorrect -fashion and must not be used). -.PP -There are primarily two reasons you would want that: work around bugs and -prioritise I/O. -.PP -As an example for a bug workaround, the kqueue backend might only support -sockets on some platform, so it is unusable as generic backend, but you -still want to make use of it because you have many sockets and it scales -so nicely. In this case, you would create a kqueue-based loop and embed it -into your default loop (which might use e.g. poll). Overall operation will -be a bit slower because first libev has to poll and then call kevent, but -at least you can use both at what they are best. -.PP -As for prioritising I/O: rarely you have the case where some fds have -to be watched and handled very quickly (with low latency), and even -priorities and idle watchers might have too much overhead. In this case -you would put all the high priority stuff in one loop and all the rest in -a second one, and embed the second one in the first. -.PP -As long as the watcher is active, the callback will be invoked every time -there might be events pending in the embedded loop. The callback must then -call \f(CW\*(C`ev_embed_sweep (mainloop, watcher)\*(C'\fR to make a single sweep and invoke -their callbacks (you could also start an idle watcher to give the embedded -loop strictly lower priority for example). You can also set the callback -to \f(CW0\fR, in which case the embed watcher will automatically execute the -embedded loop sweep. -.PP -As long as the watcher is started it will automatically handle events. The -callback will be invoked whenever some events have been handled. You can -set the callback to \f(CW0\fR to avoid having to specify one if you are not -interested in that. -.PP -Also, there have not currently been made special provisions for forking: -when you fork, you not only have to call \f(CW\*(C`ev_loop_fork\*(C'\fR on both loops, -but you will also have to stop and restart any \f(CW\*(C`ev_embed\*(C'\fR watchers -yourself. -.PP -Unfortunately, not all backends are embeddable, only the ones returned by -\&\f(CW\*(C`ev_embeddable_backends\*(C'\fR are, which, unfortunately, does not include any -portable one. -.PP -So when you want to use this feature you will always have to be prepared -that you cannot get an embeddable loop. The recommended way to get around -this is to have a separate variables for your embeddable loop, try to -create it, and if that fails, use the normal loop for everything. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" 4 -.IX Item "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" -.PD 0 -.IP "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" 4 -.IX Item "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" -.PD -Configures the watcher to embed the given loop, which must be -embeddable. If the callback is \f(CW0\fR, then \f(CW\*(C`ev_embed_sweep\*(C'\fR will be -invoked automatically, otherwise it is the responsibility of the callback -to invoke it (it will continue to be called until the sweep has been done, -if you do not want thta, you need to temporarily stop the embed watcher). -.IP "ev_embed_sweep (loop, ev_embed *)" 4 -.IX Item "ev_embed_sweep (loop, ev_embed *)" -Make a single, non-blocking sweep over the embedded loop. This works -similarly to \f(CW\*(C`ev_loop (embedded_loop, EVLOOP_NONBLOCK)\*(C'\fR, but in the most -apropriate way for embedded loops. -.IP "struct ev_loop *other [read\-only]" 4 -.IX Item "struct ev_loop *other [read-only]" -The embedded event loop. -.PP -\fIExamples\fR -.IX Subsection "Examples" -.PP -Example: Try to get an embeddable event loop and embed it into the default -event loop. If that is not possible, use the default loop. The default -loop is stored in \f(CW\*(C`loop_hi\*(C'\fR, while the mebeddable loop is stored in -\&\f(CW\*(C`loop_lo\*(C'\fR (which is \f(CW\*(C`loop_hi\*(C'\fR in the acse no embeddable loop can be -used). -.PP -.Vb 3 -\& struct ev_loop *loop_hi = ev_default_init (0); -\& struct ev_loop *loop_lo = 0; -\& struct ev_embed embed; -\& -\& // see if there is a chance of getting one that works -\& // (remember that a flags value of 0 means autodetection) -\& loop_lo = ev_embeddable_backends () & ev_recommended_backends () -\& ? ev_loop_new (ev_embeddable_backends () & ev_recommended_backends ()) -\& : 0; -\& -\& // if we got one, then embed it, otherwise default to loop_hi -\& if (loop_lo) -\& { -\& ev_embed_init (&embed, 0, loop_lo); -\& ev_embed_start (loop_hi, &embed); -\& } -\& else -\& loop_lo = loop_hi; -.Ve -.PP -Example: Check if kqueue is available but not recommended and create -a kqueue backend for use with sockets (which usually work with any -kqueue implementation). Store the kqueue/socket\-only event loop in -\&\f(CW\*(C`loop_socket\*(C'\fR. (One might optionally use \f(CW\*(C`EVFLAG_NOENV\*(C'\fR, too). -.PP -.Vb 3 -\& struct ev_loop *loop = ev_default_init (0); -\& struct ev_loop *loop_socket = 0; -\& struct ev_embed embed; -\& -\& if (ev_supported_backends () & ~ev_recommended_backends () & EVBACKEND_KQUEUE) -\& if ((loop_socket = ev_loop_new (EVBACKEND_KQUEUE)) -\& { -\& ev_embed_init (&embed, 0, loop_socket); -\& ev_embed_start (loop, &embed); -\& } -\& -\& if (!loop_socket) -\& loop_socket = loop; -\& -\& // now use loop_socket for all sockets, and loop for everything else -.Ve -.ie n .Sh """ev_fork"" \- the audacity to resume the event loop after a fork" -.el .Sh "\f(CWev_fork\fP \- the audacity to resume the event loop after a fork" -.IX Subsection "ev_fork - the audacity to resume the event loop after a fork" -Fork watchers are called when a \f(CW\*(C`fork ()\*(C'\fR was detected (usually because -whoever is a good citizen cared to tell libev about it by calling -\&\f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR). The invocation is done before the -event loop blocks next and before \f(CW\*(C`ev_check\*(C'\fR watchers are being called, -and only in the child after the fork. If whoever good citizen calling -\&\f(CW\*(C`ev_default_fork\*(C'\fR cheats and calls it in the wrong process, the fork -handlers will be invoked, too, of course. -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_fork_init (ev_signal *, callback)" 4 -.IX Item "ev_fork_init (ev_signal *, callback)" -Initialises and configures the fork watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_fork_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.ie n .Sh """ev_async"" \- how to wake up another event loop" -.el .Sh "\f(CWev_async\fP \- how to wake up another event loop" -.IX Subsection "ev_async - how to wake up another event loop" -In general, you cannot use an \f(CW\*(C`ev_loop\*(C'\fR from multiple threads or other -asynchronous sources such as signal handlers (as opposed to multiple event -loops \- those are of course safe to use in different threads). -.PP -Sometimes, however, you need to wake up another event loop you do not -control, for example because it belongs to another thread. This is what -\&\f(CW\*(C`ev_async\*(C'\fR watchers do: as long as the \f(CW\*(C`ev_async\*(C'\fR watcher is active, you -can signal it by calling \f(CW\*(C`ev_async_send\*(C'\fR, which is thread\- and signal -safe. -.PP -This functionality is very similar to \f(CW\*(C`ev_signal\*(C'\fR watchers, as signals, -too, are asynchronous in nature, and signals, too, will be compressed -(i.e. the number of callback invocations may be less than the number of -\&\f(CW\*(C`ev_async_sent\*(C'\fR calls). -.PP -Unlike \f(CW\*(C`ev_signal\*(C'\fR watchers, \f(CW\*(C`ev_async\*(C'\fR works with any event loop, not -just the default loop. -.PP -\fIQueueing\fR -.IX Subsection "Queueing" -.PP -\&\f(CW\*(C`ev_async\*(C'\fR does not support queueing of data in any way. The reason -is that the author does not know of a simple (or any) algorithm for a -multiple-writer-single-reader queue that works in all cases and doesn't -need elaborate support such as pthreads. -.PP -That means that if you want to queue data, you have to provide your own -queue. But at least I can tell you would implement locking around your -queue: -.IP "queueing from a signal handler context" 4 -.IX Item "queueing from a signal handler context" -To implement race-free queueing, you simply add to the queue in the signal -handler but you block the signal handler in the watcher callback. Here is an example that does that for -some fictitiuous \s-1SIGUSR1\s0 handler: -.Sp -.Vb 1 -\& static ev_async mysig; -\& -\& static void -\& sigusr1_handler (void) -\& { -\& sometype data; -\& -\& // no locking etc. -\& queue_put (data); -\& ev_async_send (EV_DEFAULT_ &mysig); -\& } -\& -\& static void -\& mysig_cb (EV_P_ ev_async *w, int revents) -\& { -\& sometype data; -\& sigset_t block, prev; -\& -\& sigemptyset (&block); -\& sigaddset (&block, SIGUSR1); -\& sigprocmask (SIG_BLOCK, &block, &prev); -\& -\& while (queue_get (&data)) -\& process (data); -\& -\& if (sigismember (&prev, SIGUSR1) -\& sigprocmask (SIG_UNBLOCK, &block, 0); -\& } -.Ve -.Sp -(Note: pthreads in theory requires you to use \f(CW\*(C`pthread_setmask\*(C'\fR -instead of \f(CW\*(C`sigprocmask\*(C'\fR when you use threads, but libev doesn't do it -either...). -.IP "queueing from a thread context" 4 -.IX Item "queueing from a thread context" -The strategy for threads is different, as you cannot (easily) block -threads but you can easily preempt them, so to queue safely you need to -employ a traditional mutex lock, such as in this pthread example: -.Sp -.Vb 2 -\& static ev_async mysig; -\& static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER; -\& -\& static void -\& otherthread (void) -\& { -\& // only need to lock the actual queueing operation -\& pthread_mutex_lock (&mymutex); -\& queue_put (data); -\& pthread_mutex_unlock (&mymutex); -\& -\& ev_async_send (EV_DEFAULT_ &mysig); -\& } -\& -\& static void -\& mysig_cb (EV_P_ ev_async *w, int revents) -\& { -\& pthread_mutex_lock (&mymutex); -\& -\& while (queue_get (&data)) -\& process (data); -\& -\& pthread_mutex_unlock (&mymutex); -\& } -.Ve -.PP -\fIWatcher-Specific Functions and Data Members\fR -.IX Subsection "Watcher-Specific Functions and Data Members" -.IP "ev_async_init (ev_async *, callback)" 4 -.IX Item "ev_async_init (ev_async *, callback)" -Initialises and configures the async watcher \- it has no parameters of any -kind. There is a \f(CW\*(C`ev_asynd_set\*(C'\fR macro, but using it is utterly pointless, -believe me. -.IP "ev_async_send (loop, ev_async *)" 4 -.IX Item "ev_async_send (loop, ev_async *)" -Sends/signals/activates the given \f(CW\*(C`ev_async\*(C'\fR watcher, that is, feeds -an \f(CW\*(C`EV_ASYNC\*(C'\fR event on the watcher into the event loop. Unlike -\&\f(CW\*(C`ev_feed_event\*(C'\fR, this call is safe to do in other threads, signal or -similar contexts (see the dicusssion of \f(CW\*(C`EV_ATOMIC_T\*(C'\fR in the embedding -section below on what exactly this means). -.Sp -This call incurs the overhead of a syscall only once per loop iteration, -so while the overhead might be noticable, it doesn't apply to repeated -calls to \f(CW\*(C`ev_async_send\*(C'\fR. -.IP "bool = ev_async_pending (ev_async *)" 4 -.IX Item "bool = ev_async_pending (ev_async *)" -Returns a non-zero value when \f(CW\*(C`ev_async_send\*(C'\fR has been called on the -watcher but the event has not yet been processed (or even noted) by the -event loop. -.Sp -\&\f(CW\*(C`ev_async_send\*(C'\fR sets a flag in the watcher and wakes up the loop. When -the loop iterates next and checks for the watcher to have become active, -it will reset the flag again. \f(CW\*(C`ev_async_pending\*(C'\fR can be used to very -quickly check wether invoking the loop might be a good idea. -.Sp -Not that this does \fInot\fR check wether the watcher itself is pending, only -wether it has been requested to make this watcher pending. -.SH "OTHER FUNCTIONS" -.IX Header "OTHER FUNCTIONS" -There are some other functions of possible interest. Described. Here. Now. -.IP "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" 4 -.IX Item "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" -This function combines a simple timer and an I/O watcher, calls your -callback on whichever event happens first and automatically stop both -watchers. This is useful if you want to wait for a single event on an fd -or timeout without having to allocate/configure/start/stop/free one or -more watchers yourself. -.Sp -If \f(CW\*(C`fd\*(C'\fR is less than 0, then no I/O watcher will be started and events -is being ignored. Otherwise, an \f(CW\*(C`ev_io\*(C'\fR watcher for the given \f(CW\*(C`fd\*(C'\fR and -\&\f(CW\*(C`events\*(C'\fR set will be craeted and started. -.Sp -If \f(CW\*(C`timeout\*(C'\fR is less than 0, then no timeout watcher will be -started. Otherwise an \f(CW\*(C`ev_timer\*(C'\fR watcher with after = \f(CW\*(C`timeout\*(C'\fR (and -repeat = 0) will be started. While \f(CW0\fR is a valid timeout, it is of -dubious value. -.Sp -The callback has the type \f(CW\*(C`void (*cb)(int revents, void *arg)\*(C'\fR and gets -passed an \f(CW\*(C`revents\*(C'\fR set like normal event callbacks (a combination of -\&\f(CW\*(C`EV_ERROR\*(C'\fR, \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or \f(CW\*(C`EV_TIMEOUT\*(C'\fR) and the \f(CW\*(C`arg\*(C'\fR -value passed to \f(CW\*(C`ev_once\*(C'\fR: -.Sp -.Vb 7 -\& static void stdin_ready (int revents, void *arg) -\& { -\& if (revents & EV_TIMEOUT) -\& /* doh, nothing entered */; -\& else if (revents & EV_READ) -\& /* stdin might have data for us, joy! */; -\& } -\& -\& ev_once (STDIN_FILENO, EV_READ, 10., stdin_ready, 0); -.Ve -.IP "ev_feed_event (ev_loop *, watcher *, int revents)" 4 -.IX Item "ev_feed_event (ev_loop *, watcher *, int revents)" -Feeds the given event set into the event loop, as if the specified event -had happened for the specified watcher (which must be a pointer to an -initialised but not necessarily started event watcher). -.IP "ev_feed_fd_event (ev_loop *, int fd, int revents)" 4 -.IX Item "ev_feed_fd_event (ev_loop *, int fd, int revents)" -Feed an event on the given fd, as if a file descriptor backend detected -the given events it. -.IP "ev_feed_signal_event (ev_loop *loop, int signum)" 4 -.IX Item "ev_feed_signal_event (ev_loop *loop, int signum)" -Feed an event as if the given signal occured (\f(CW\*(C`loop\*(C'\fR must be the default -loop!). -.SH "LIBEVENT EMULATION" -.IX Header "LIBEVENT EMULATION" -Libev offers a compatibility emulation layer for libevent. It cannot -emulate the internals of libevent, so here are some usage hints: -.IP "\(bu" 4 -Use it by including <event.h>, as usual. -.IP "\(bu" 4 -The following members are fully supported: ev_base, ev_callback, -ev_arg, ev_fd, ev_res, ev_events. -.IP "\(bu" 4 -Avoid using ev_flags and the EVLIST_*\-macros, while it is -maintained by libev, it does not work exactly the same way as in libevent (consider -it a private \s-1API\s0). -.IP "\(bu" 4 -Priorities are not currently supported. Initialising priorities -will fail and all watchers will have the same priority, even though there -is an ev_pri field. -.IP "\(bu" 4 -In libevent, the last base created gets the signals, in libev, the -first base created (== the default loop) gets the signals. -.IP "\(bu" 4 -Other members are not supported. -.IP "\(bu" 4 -The libev emulation is \fInot\fR \s-1ABI\s0 compatible to libevent, you need -to use the libev header file and library. -.SH "\*(C+ SUPPORT" -.IX Header " SUPPORT" -Libev comes with some simplistic wrapper classes for \*(C+ that mainly allow -you to use some convinience methods to start/stop watchers and also change -the callback model to a model using method callbacks on objects. -.PP -To use it, -.PP -.Vb 1 -\& #include <ev++.h> -.Ve -.PP -This automatically includes \fIev.h\fR and puts all of its definitions (many -of them macros) into the global namespace. All \*(C+ specific things are -put into the \f(CW\*(C`ev\*(C'\fR namespace. It should support all the same embedding -options as \fIev.h\fR, most notably \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. -.PP -Care has been taken to keep the overhead low. The only data member the \*(C+ -classes add (compared to plain C\-style watchers) is the event loop pointer -that the watcher is associated with (or no additional members at all if -you disable \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR when embedding libev). -.PP -Currently, functions, and static and non-static member functions can be -used as callbacks. Other types should be easy to add as long as they only -need one additional pointer for context. If you need support for other -types of functors please contact the author (preferably after implementing -it). -.PP -Here is a list of things available in the \f(CW\*(C`ev\*(C'\fR namespace: -.ie n .IP """ev::READ""\fR, \f(CW""ev::WRITE"" etc." 4 -.el .IP "\f(CWev::READ\fR, \f(CWev::WRITE\fR etc." 4 -.IX Item "ev::READ, ev::WRITE etc." -These are just enum values with the same values as the \f(CW\*(C`EV_READ\*(C'\fR etc. -macros from \fIev.h\fR. -.ie n .IP """ev::tstamp""\fR, \f(CW""ev::now""" 4 -.el .IP "\f(CWev::tstamp\fR, \f(CWev::now\fR" 4 -.IX Item "ev::tstamp, ev::now" -Aliases to the same types/functions as with the \f(CW\*(C`ev_\*(C'\fR prefix. -.ie n .IP """ev::io""\fR, \f(CW""ev::timer""\fR, \f(CW""ev::periodic""\fR, \f(CW""ev::idle""\fR, \f(CW""ev::sig"" etc." 4 -.el .IP "\f(CWev::io\fR, \f(CWev::timer\fR, \f(CWev::periodic\fR, \f(CWev::idle\fR, \f(CWev::sig\fR etc." 4 -.IX Item "ev::io, ev::timer, ev::periodic, ev::idle, ev::sig etc." -For each \f(CW\*(C`ev_TYPE\*(C'\fR watcher in \fIev.h\fR there is a corresponding class of -the same name in the \f(CW\*(C`ev\*(C'\fR namespace, with the exception of \f(CW\*(C`ev_signal\*(C'\fR -which is called \f(CW\*(C`ev::sig\*(C'\fR to avoid clashes with the \f(CW\*(C`signal\*(C'\fR macro -defines by many implementations. -.Sp -All of those classes have these methods: -.RS 4 -.IP "ev::TYPE::TYPE ()" 4 -.IX Item "ev::TYPE::TYPE ()" -.PD 0 -.IP "ev::TYPE::TYPE (struct ev_loop *)" 4 -.IX Item "ev::TYPE::TYPE (struct ev_loop *)" -.IP "ev::TYPE::~TYPE" 4 -.IX Item "ev::TYPE::~TYPE" -.PD -The constructor (optionally) takes an event loop to associate the watcher -with. If it is omitted, it will use \f(CW\*(C`EV_DEFAULT\*(C'\fR. -.Sp -The constructor calls \f(CW\*(C`ev_init\*(C'\fR for you, which means you have to call the -\&\f(CW\*(C`set\*(C'\fR method before starting it. -.Sp -It will not set a callback, however: You have to call the templated \f(CW\*(C`set\*(C'\fR -method to set a callback before you can start the watcher. -.Sp -(The reason why you have to use a method is a limitation in \*(C+ which does -not allow explicit template arguments for constructors). -.Sp -The destructor automatically stops the watcher if it is active. -.IP "w\->set<class, &class::method> (object *)" 4 -.IX Item "w->set<class, &class::method> (object *)" -This method sets the callback method to call. The method has to have a -signature of \f(CW\*(C`void (*)(ev_TYPE &, int)\*(C'\fR, it receives the watcher as -first argument and the \f(CW\*(C`revents\*(C'\fR as second. The object must be given as -parameter and is stored in the \f(CW\*(C`data\*(C'\fR member of the watcher. -.Sp -This method synthesizes efficient thunking code to call your method from -the C callback that libev requires. If your compiler can inline your -callback (i.e. it is visible to it at the place of the \f(CW\*(C`set\*(C'\fR call and -your compiler is good :), then the method will be fully inlined into the -thunking function, making it as fast as a direct C callback. -.Sp -Example: simple class declaration and watcher initialisation -.Sp -.Vb 4 -\& struct myclass -\& { -\& void io_cb (ev::io &w, int revents) { } -\& } -\& -\& myclass obj; -\& ev::io iow; -\& iow.set <myclass, &myclass::io_cb> (&obj); -.Ve -.IP "w\->set<function> (void *data = 0)" 4 -.IX Item "w->set<function> (void *data = 0)" -Also sets a callback, but uses a static method or plain function as -callback. The optional \f(CW\*(C`data\*(C'\fR argument will be stored in the watcher's -\&\f(CW\*(C`data\*(C'\fR member and is free for you to use. -.Sp -The prototype of the \f(CW\*(C`function\*(C'\fR must be \f(CW\*(C`void (*)(ev::TYPE &w, int)\*(C'\fR. -.Sp -See the method\-\f(CW\*(C`set\*(C'\fR above for more details. -.Sp -Example: -.Sp -.Vb 2 -\& static void io_cb (ev::io &w, int revents) { } -\& iow.set <io_cb> (); -.Ve -.IP "w\->set (struct ev_loop *)" 4 -.IX Item "w->set (struct ev_loop *)" -Associates a different \f(CW\*(C`struct ev_loop\*(C'\fR with this watcher. You can only -do this when the watcher is inactive (and not pending either). -.IP "w\->set ([args])" 4 -.IX Item "w->set ([args])" -Basically the same as \f(CW\*(C`ev_TYPE_set\*(C'\fR, with the same args. Must be -called at least once. Unlike the C counterpart, an active watcher gets -automatically stopped and restarted when reconfiguring it with this -method. -.IP "w\->start ()" 4 -.IX Item "w->start ()" -Starts the watcher. Note that there is no \f(CW\*(C`loop\*(C'\fR argument, as the -constructor already stores the event loop. -.IP "w\->stop ()" 4 -.IX Item "w->stop ()" -Stops the watcher if it is active. Again, no \f(CW\*(C`loop\*(C'\fR argument. -.ie n .IP "w\->again () (""ev::timer""\fR, \f(CW""ev::periodic"" only)" 4 -.el .IP "w\->again () (\f(CWev::timer\fR, \f(CWev::periodic\fR only)" 4 -.IX Item "w->again () (ev::timer, ev::periodic only)" -For \f(CW\*(C`ev::timer\*(C'\fR and \f(CW\*(C`ev::periodic\*(C'\fR, this invokes the corresponding -\&\f(CW\*(C`ev_TYPE_again\*(C'\fR function. -.ie n .IP "w\->sweep () (""ev::embed"" only)" 4 -.el .IP "w\->sweep () (\f(CWev::embed\fR only)" 4 -.IX Item "w->sweep () (ev::embed only)" -Invokes \f(CW\*(C`ev_embed_sweep\*(C'\fR. -.ie n .IP "w\->update () (""ev::stat"" only)" 4 -.el .IP "w\->update () (\f(CWev::stat\fR only)" 4 -.IX Item "w->update () (ev::stat only)" -Invokes \f(CW\*(C`ev_stat_stat\*(C'\fR. -.RE -.RS 4 -.RE -.PP -Example: Define a class with an \s-1IO\s0 and idle watcher, start one of them in -the constructor. -.PP -.Vb 4 -\& class myclass -\& { -\& ev::io io; void io_cb (ev::io &w, int revents); -\& ev:idle idle void idle_cb (ev::idle &w, int revents); -\& -\& myclass (int fd) -\& { -\& io .set <myclass, &myclass::io_cb > (this); -\& idle.set <myclass, &myclass::idle_cb> (this); -\& -\& io.start (fd, ev::READ); -\& } -\& }; -.Ve -.SH "OTHER LANGUAGE BINDINGS" -.IX Header "OTHER LANGUAGE BINDINGS" -Libev does not offer other language bindings itself, but bindings for a -numbe rof languages exist in the form of third-party packages. If you know -any interesting language binding in addition to the ones listed here, drop -me a note. -.IP "Perl" 4 -.IX Item "Perl" -The \s-1EV\s0 module implements the full libev \s-1API\s0 and is actually used to test -libev. \s-1EV\s0 is developed together with libev. Apart from the \s-1EV\s0 core module, -there are additional modules that implement libev-compatible interfaces -to \f(CW\*(C`libadns\*(C'\fR (\f(CW\*(C`EV::ADNS\*(C'\fR), \f(CW\*(C`Net::SNMP\*(C'\fR (\f(CW\*(C`Net::SNMP::EV\*(C'\fR) and the -\&\f(CW\*(C`libglib\*(C'\fR event core (\f(CW\*(C`Glib::EV\*(C'\fR and \f(CW\*(C`EV::Glib\*(C'\fR). -.Sp -It can be found and installed via \s-1CPAN\s0, its homepage is found at -<http://software.schmorp.de/pkg/EV>. -.IP "Ruby" 4 -.IX Item "Ruby" -Tony Arcieri has written a ruby extension that offers access to a subset -of the libev \s-1API\s0 and adds filehandle abstractions, asynchronous \s-1DNS\s0 and -more on top of it. It can be found via gem servers. Its homepage is at -<http://rev.rubyforge.org/>. -.IP "D" 4 -.IX Item "D" -Leandro Lucarella has written a D language binding (\fIev.d\fR) for libev, to -be found at <http://git.llucax.com.ar/?p=software/ev.d.git;a=summary>. -.SH "MACRO MAGIC" -.IX Header "MACRO MAGIC" -Libev can be compiled with a variety of options, the most fundamantal -of which is \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. This option determines whether (most) -functions and callbacks have an initial \f(CW\*(C`struct ev_loop *\*(C'\fR argument. -.PP -To make it easier to write programs that cope with either variant, the -following macros are defined: -.ie n .IP """EV_A""\fR, \f(CW""EV_A_""" 4 -.el .IP "\f(CWEV_A\fR, \f(CWEV_A_\fR" 4 -.IX Item "EV_A, EV_A_" -This provides the loop \fIargument\fR for functions, if one is required (\*(L"ev -loop argument\*(R"). The \f(CW\*(C`EV_A\*(C'\fR form is used when this is the sole argument, -\&\f(CW\*(C`EV_A_\*(C'\fR is used when other arguments are following. Example: -.Sp -.Vb 3 -\& ev_unref (EV_A); -\& ev_timer_add (EV_A_ watcher); -\& ev_loop (EV_A_ 0); -.Ve -.Sp -It assumes the variable \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR is in scope, -which is often provided by the following macro. -.ie n .IP """EV_P""\fR, \f(CW""EV_P_""" 4 -.el .IP "\f(CWEV_P\fR, \f(CWEV_P_\fR" 4 -.IX Item "EV_P, EV_P_" -This provides the loop \fIparameter\fR for functions, if one is required (\*(L"ev -loop parameter\*(R"). The \f(CW\*(C`EV_P\*(C'\fR form is used when this is the sole parameter, -\&\f(CW\*(C`EV_P_\*(C'\fR is used when other parameters are following. Example: -.Sp -.Vb 2 -\& // this is how ev_unref is being declared -\& static void ev_unref (EV_P); -\& -\& // this is how you can declare your typical callback -\& static void cb (EV_P_ ev_timer *w, int revents) -.Ve -.Sp -It declares a parameter \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR, quite -suitable for use with \f(CW\*(C`EV_A\*(C'\fR. -.ie n .IP """EV_DEFAULT""\fR, \f(CW""EV_DEFAULT_""" 4 -.el .IP "\f(CWEV_DEFAULT\fR, \f(CWEV_DEFAULT_\fR" 4 -.IX Item "EV_DEFAULT, EV_DEFAULT_" -Similar to the other two macros, this gives you the value of the default -loop, if multiple loops are supported (\*(L"ev loop default\*(R"). -.ie n .IP """EV_DEFAULT_UC""\fR, \f(CW""EV_DEFAULT_UC_""" 4 -.el .IP "\f(CWEV_DEFAULT_UC\fR, \f(CWEV_DEFAULT_UC_\fR" 4 -.IX Item "EV_DEFAULT_UC, EV_DEFAULT_UC_" -Usage identical to \f(CW\*(C`EV_DEFAULT\*(C'\fR and \f(CW\*(C`EV_DEFAULT_\*(C'\fR, but requires that the -default loop has been initialised (\f(CW\*(C`UC\*(C'\fR == unchecked). Their behaviour -is undefined when the default loop has not been initialised by a previous -execution of \f(CW\*(C`EV_DEFAULT\*(C'\fR, \f(CW\*(C`EV_DEFAULT_\*(C'\fR or \f(CW\*(C`ev_default_init (...)\*(C'\fR. -.Sp -It is often prudent to use \f(CW\*(C`EV_DEFAULT\*(C'\fR when initialising the first -watcher in a function but use \f(CW\*(C`EV_DEFAULT_UC\*(C'\fR afterwards. -.PP -Example: Declare and initialise a check watcher, utilising the above -macros so it will work regardless of whether multiple loops are supported -or not. -.PP -.Vb 5 -\& static void -\& check_cb (EV_P_ ev_timer *w, int revents) -\& { -\& ev_check_stop (EV_A_ w); -\& } -\& -\& ev_check check; -\& ev_check_init (&check, check_cb); -\& ev_check_start (EV_DEFAULT_ &check); -\& ev_loop (EV_DEFAULT_ 0); -.Ve -.SH "EMBEDDING" -.IX Header "EMBEDDING" -Libev can (and often is) directly embedded into host -applications. Examples of applications that embed it include the Deliantra -Game Server, the \s-1EV\s0 perl module, the \s-1GNU\s0 Virtual Private Ethernet (gvpe) -and rxvt-unicode. -.PP -The goal is to enable you to just copy the necessary files into your -source directory without having to change even a single line in them, so -you can easily upgrade by simply copying (or having a checked-out copy of -libev somewhere in your source tree). -.Sh "\s-1FILESETS\s0" -.IX Subsection "FILESETS" -Depending on what features you need you need to include one or more sets of files -in your app. -.PP -\fI\s-1CORE\s0 \s-1EVENT\s0 \s-1LOOP\s0\fR -.IX Subsection "CORE EVENT LOOP" -.PP -To include only the libev core (all the \f(CW\*(C`ev_*\*(C'\fR functions), with manual -configuration (no autoconf): -.PP -.Vb 2 -\& #define EV_STANDALONE 1 -\& #include "ev.c" -.Ve -.PP -This will automatically include \fIev.h\fR, too, and should be done in a -single C source file only to provide the function implementations. To use -it, do the same for \fIev.h\fR in all files wishing to use this \s-1API\s0 (best -done by writing a wrapper around \fIev.h\fR that you can include instead and -where you can put other configuration options): -.PP -.Vb 2 -\& #define EV_STANDALONE 1 -\& #include "ev.h" -.Ve -.PP -Both header files and implementation files can be compiled with a \*(C+ -compiler (at least, thats a stated goal, and breakage will be treated -as a bug). -.PP -You need the following files in your source tree, or in a directory -in your include path (e.g. in libev/ when using \-Ilibev): -.PP -.Vb 4 -\& ev.h -\& ev.c -\& ev_vars.h -\& ev_wrap.h -\& -\& ev_win32.c required on win32 platforms only -\& -\& ev_select.c only when select backend is enabled (which is enabled by default) -\& ev_poll.c only when poll backend is enabled (disabled by default) -\& ev_epoll.c only when the epoll backend is enabled (disabled by default) -\& ev_kqueue.c only when the kqueue backend is enabled (disabled by default) -\& ev_port.c only when the solaris port backend is enabled (disabled by default) -.Ve -.PP -\&\fIev.c\fR includes the backend files directly when enabled, so you only need -to compile this single file. -.PP -\fI\s-1LIBEVENT\s0 \s-1COMPATIBILITY\s0 \s-1API\s0\fR -.IX Subsection "LIBEVENT COMPATIBILITY API" -.PP -To include the libevent compatibility \s-1API\s0, also include: -.PP -.Vb 1 -\& #include "event.c" -.Ve -.PP -in the file including \fIev.c\fR, and: -.PP -.Vb 1 -\& #include "event.h" -.Ve -.PP -in the files that want to use the libevent \s-1API\s0. This also includes \fIev.h\fR. -.PP -You need the following additional files for this: -.PP -.Vb 2 -\& event.h -\& event.c -.Ve -.PP -\fI\s-1AUTOCONF\s0 \s-1SUPPORT\s0\fR -.IX Subsection "AUTOCONF SUPPORT" -.PP -Instead of using \f(CW\*(C`EV_STANDALONE=1\*(C'\fR and providing your config in -whatever way you want, you can also \f(CW\*(C`m4_include([libev.m4])\*(C'\fR in your -\&\fIconfigure.ac\fR and leave \f(CW\*(C`EV_STANDALONE\*(C'\fR undefined. \fIev.c\fR will then -include \fIconfig.h\fR and configure itself accordingly. -.PP -For this of course you need the m4 file: -.PP -.Vb 1 -\& libev.m4 -.Ve -.Sh "\s-1PREPROCESSOR\s0 \s-1SYMBOLS/MACROS\s0" -.IX Subsection "PREPROCESSOR SYMBOLS/MACROS" -Libev can be configured via a variety of preprocessor symbols you have to -define before including any of its files. The default in the absense of -autoconf is noted for every option. -.IP "\s-1EV_STANDALONE\s0" 4 -.IX Item "EV_STANDALONE" -Must always be \f(CW1\fR if you do not use autoconf configuration, which -keeps libev from including \fIconfig.h\fR, and it also defines dummy -implementations for some libevent functions (such as logging, which is not -supported). It will also not define any of the structs usually found in -\&\fIevent.h\fR that are not directly supported by the libev core alone. -.IP "\s-1EV_USE_MONOTONIC\s0" 4 -.IX Item "EV_USE_MONOTONIC" -If defined to be \f(CW1\fR, libev will try to detect the availability of the -monotonic clock option at both compiletime and runtime. Otherwise no use -of the monotonic clock option will be attempted. If you enable this, you -usually have to link against librt or something similar. Enabling it when -the functionality isn't available is safe, though, although you have -to make sure you link against any libraries where the \f(CW\*(C`clock_gettime\*(C'\fR -function is hiding in (often \fI\-lrt\fR). -.IP "\s-1EV_USE_REALTIME\s0" 4 -.IX Item "EV_USE_REALTIME" -If defined to be \f(CW1\fR, libev will try to detect the availability of the -realtime clock option at compiletime (and assume its availability at -runtime if successful). Otherwise no use of the realtime clock option will -be attempted. This effectively replaces \f(CW\*(C`gettimeofday\*(C'\fR by \f(CW\*(C`clock_get -(CLOCK_REALTIME, ...)\*(C'\fR and will not normally affect correctness. See the -note about libraries in the description of \f(CW\*(C`EV_USE_MONOTONIC\*(C'\fR, though. -.IP "\s-1EV_USE_NANOSLEEP\s0" 4 -.IX Item "EV_USE_NANOSLEEP" -If defined to be \f(CW1\fR, libev will assume that \f(CW\*(C`nanosleep ()\*(C'\fR is available -and will use it for delays. Otherwise it will use \f(CW\*(C`select ()\*(C'\fR. -.IP "\s-1EV_USE_EVENTFD\s0" 4 -.IX Item "EV_USE_EVENTFD" -If defined to be \f(CW1\fR, then libev will assume that \f(CW\*(C`eventfd ()\*(C'\fR is -available and will probe for kernel support at runtime. This will improve -\&\f(CW\*(C`ev_signal\*(C'\fR and \f(CW\*(C`ev_async\*(C'\fR performance and reduce resource consumption. -If undefined, it will be enabled if the headers indicate GNU/Linux + Glibc -2.7 or newer, otherwise disabled. -.IP "\s-1EV_USE_SELECT\s0" 4 -.IX Item "EV_USE_SELECT" -If undefined or defined to be \f(CW1\fR, libev will compile in support for the -\&\f(CW\*(C`select\*(C'\fR(2) backend. No attempt at autodetection will be done: if no -other method takes over, select will be it. Otherwise the select backend -will not be compiled in. -.IP "\s-1EV_SELECT_USE_FD_SET\s0" 4 -.IX Item "EV_SELECT_USE_FD_SET" -If defined to \f(CW1\fR, then the select backend will use the system \f(CW\*(C`fd_set\*(C'\fR -structure. This is useful if libev doesn't compile due to a missing -\&\f(CW\*(C`NFDBITS\*(C'\fR or \f(CW\*(C`fd_mask\*(C'\fR definition or it misguesses the bitset layout on -exotic systems. This usually limits the range of file descriptors to some -low limit such as 1024 or might have other limitations (winsocket only -allows 64 sockets). The \f(CW\*(C`FD_SETSIZE\*(C'\fR macro, set before compilation, might -influence the size of the \f(CW\*(C`fd_set\*(C'\fR used. -.IP "\s-1EV_SELECT_IS_WINSOCKET\s0" 4 -.IX Item "EV_SELECT_IS_WINSOCKET" -When defined to \f(CW1\fR, the select backend will assume that -select/socket/connect etc. don't understand file descriptors but -wants osf handles on win32 (this is the case when the select to -be used is the winsock select). This means that it will call -\&\f(CW\*(C`_get_osfhandle\*(C'\fR on the fd to convert it to an \s-1OS\s0 handle. Otherwise, -it is assumed that all these functions actually work on fds, even -on win32. Should not be defined on non\-win32 platforms. -.IP "\s-1EV_FD_TO_WIN32_HANDLE\s0" 4 -.IX Item "EV_FD_TO_WIN32_HANDLE" -If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR is enabled, then libev needs a way to map -file descriptors to socket handles. When not defining this symbol (the -default), then libev will call \f(CW\*(C`_get_osfhandle\*(C'\fR, which is usually -correct. In some cases, programs use their own file descriptor management, -in which case they can provide this function to map fds to socket handles. -.IP "\s-1EV_USE_POLL\s0" 4 -.IX Item "EV_USE_POLL" -If defined to be \f(CW1\fR, libev will compile in support for the \f(CW\*(C`poll\*(C'\fR(2) -backend. Otherwise it will be enabled on non\-win32 platforms. It -takes precedence over select. -.IP "\s-1EV_USE_EPOLL\s0" 4 -.IX Item "EV_USE_EPOLL" -If defined to be \f(CW1\fR, libev will compile in support for the Linux -\&\f(CW\*(C`epoll\*(C'\fR(7) backend. Its availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for GNU/Linux systems. If undefined, it will be enabled if the -headers indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled. -.IP "\s-1EV_USE_KQUEUE\s0" 4 -.IX Item "EV_USE_KQUEUE" -If defined to be \f(CW1\fR, libev will compile in support for the \s-1BSD\s0 style -\&\f(CW\*(C`kqueue\*(C'\fR(2) backend. Its actual availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for \s-1BSD\s0 and BSD-like systems, although on most BSDs kqueue only -supports some types of fds correctly (the only platform we found that -supports ptys for example was NetBSD), so kqueue might be compiled in, but -not be used unless explicitly requested. The best way to use it is to find -out whether kqueue supports your type of fd properly and use an embedded -kqueue loop. -.IP "\s-1EV_USE_PORT\s0" 4 -.IX Item "EV_USE_PORT" -If defined to be \f(CW1\fR, libev will compile in support for the Solaris -10 port style backend. Its availability will be detected at runtime, -otherwise another method will be used as fallback. This is the preferred -backend for Solaris 10 systems. -.IP "\s-1EV_USE_DEVPOLL\s0" 4 -.IX Item "EV_USE_DEVPOLL" -reserved for future expansion, works like the \s-1USE\s0 symbols above. -.IP "\s-1EV_USE_INOTIFY\s0" 4 -.IX Item "EV_USE_INOTIFY" -If defined to be \f(CW1\fR, libev will compile in support for the Linux inotify -interface to speed up \f(CW\*(C`ev_stat\*(C'\fR watchers. Its actual availability will -be detected at runtime. If undefined, it will be enabled if the headers -indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled. -.IP "\s-1EV_ATOMIC_T\s0" 4 -.IX Item "EV_ATOMIC_T" -Libev requires an integer type (suitable for storing \f(CW0\fR or \f(CW1\fR) whose -access is atomic with respect to other threads or signal contexts. No such -type is easily found in the C language, so you can provide your own type -that you know is safe for your purposes. It is used both for signal handler \*(L"locking\*(R" -as well as for signal and thread safety in \f(CW\*(C`ev_async\*(C'\fR watchers. -.Sp -In the absense of this define, libev will use \f(CW\*(C`sig_atomic_t volatile\*(C'\fR -(from \fIsignal.h\fR), which is usually good enough on most platforms. -.IP "\s-1EV_H\s0" 4 -.IX Item "EV_H" -The name of the \fIev.h\fR header file used to include it. The default if -undefined is \f(CW"ev.h"\fR in \fIevent.h\fR, \fIev.c\fR and \fIev++.h\fR. This can be -used to virtually rename the \fIev.h\fR header file in case of conflicts. -.IP "\s-1EV_CONFIG_H\s0" 4 -.IX Item "EV_CONFIG_H" -If \f(CW\*(C`EV_STANDALONE\*(C'\fR isn't \f(CW1\fR, this variable can be used to override -\&\fIev.c\fR's idea of where to find the \fIconfig.h\fR file, similarly to -\&\f(CW\*(C`EV_H\*(C'\fR, above. -.IP "\s-1EV_EVENT_H\s0" 4 -.IX Item "EV_EVENT_H" -Similarly to \f(CW\*(C`EV_H\*(C'\fR, this macro can be used to override \fIevent.c\fR's idea -of how the \fIevent.h\fR header can be found, the default is \f(CW"event.h"\fR. -.IP "\s-1EV_PROTOTYPES\s0" 4 -.IX Item "EV_PROTOTYPES" -If defined to be \f(CW0\fR, then \fIev.h\fR will not define any function -prototypes, but still define all the structs and other symbols. This is -occasionally useful if you want to provide your own wrapper functions -around libev functions. -.IP "\s-1EV_MULTIPLICITY\s0" 4 -.IX Item "EV_MULTIPLICITY" -If undefined or defined to \f(CW1\fR, then all event-loop-specific functions -will have the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument, and you can create -additional independent event loops. Otherwise there will be no support -for multiple event loops and there is no first event loop pointer -argument. Instead, all functions act on the single default loop. -.IP "\s-1EV_MINPRI\s0" 4 -.IX Item "EV_MINPRI" -.PD 0 -.IP "\s-1EV_MAXPRI\s0" 4 -.IX Item "EV_MAXPRI" -.PD -The range of allowed priorities. \f(CW\*(C`EV_MINPRI\*(C'\fR must be smaller or equal to -\&\f(CW\*(C`EV_MAXPRI\*(C'\fR, but otherwise there are no non-obvious limitations. You can -provide for more priorities by overriding those symbols (usually defined -to be \f(CW\*(C`\-2\*(C'\fR and \f(CW2\fR, respectively). -.Sp -When doing priority-based operations, libev usually has to linearly search -all the priorities, so having many of them (hundreds) uses a lot of space -and time, so using the defaults of five priorities (\-2 .. +2) is usually -fine. -.Sp -If your embedding app does not need any priorities, defining these both to -\&\f(CW0\fR will save some memory and cpu. -.IP "\s-1EV_PERIODIC_ENABLE\s0" 4 -.IX Item "EV_PERIODIC_ENABLE" -If undefined or defined to be \f(CW1\fR, then periodic timers are supported. If -defined to be \f(CW0\fR, then they are not. Disabling them saves a few kB of -code. -.IP "\s-1EV_IDLE_ENABLE\s0" 4 -.IX Item "EV_IDLE_ENABLE" -If undefined or defined to be \f(CW1\fR, then idle watchers are supported. If -defined to be \f(CW0\fR, then they are not. Disabling them saves a few kB of -code. -.IP "\s-1EV_EMBED_ENABLE\s0" 4 -.IX Item "EV_EMBED_ENABLE" -If undefined or defined to be \f(CW1\fR, then embed watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_STAT_ENABLE\s0" 4 -.IX Item "EV_STAT_ENABLE" -If undefined or defined to be \f(CW1\fR, then stat watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_FORK_ENABLE\s0" 4 -.IX Item "EV_FORK_ENABLE" -If undefined or defined to be \f(CW1\fR, then fork watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_ASYNC_ENABLE\s0" 4 -.IX Item "EV_ASYNC_ENABLE" -If undefined or defined to be \f(CW1\fR, then async watchers are supported. If -defined to be \f(CW0\fR, then they are not. -.IP "\s-1EV_MINIMAL\s0" 4 -.IX Item "EV_MINIMAL" -If you need to shave off some kilobytes of code at the expense of some -speed, define this symbol to \f(CW1\fR. Currently this is used to override some -inlining decisions, saves roughly 30% codesize of amd64. It also selects a -much smaller 2\-heap for timer management over the default 4\-heap. -.IP "\s-1EV_PID_HASHSIZE\s0" 4 -.IX Item "EV_PID_HASHSIZE" -\&\f(CW\*(C`ev_child\*(C'\fR watchers use a small hash table to distribute workload by -pid. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_MINIMAL\*(C'\fR), usually more -than enough. If you need to manage thousands of children you might want to -increase this value (\fImust\fR be a power of two). -.IP "\s-1EV_INOTIFY_HASHSIZE\s0" 4 -.IX Item "EV_INOTIFY_HASHSIZE" -\&\f(CW\*(C`ev_stat\*(C'\fR watchers use a small hash table to distribute workload by -inotify watch id. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_MINIMAL\*(C'\fR), -usually more than enough. If you need to manage thousands of \f(CW\*(C`ev_stat\*(C'\fR -watchers you might want to increase this value (\fImust\fR be a power of -two). -.IP "\s-1EV_USE_4HEAP\s0" 4 -.IX Item "EV_USE_4HEAP" -Heaps are not very cache-efficient. To improve the cache-efficiency of the -timer and periodics heap, libev uses a 4\-heap when this symbol is defined -to \f(CW1\fR. The 4\-heap uses more complicated (longer) code but has a -noticable after performance with many (thousands) of watchers. -.Sp -The default is \f(CW1\fR unless \f(CW\*(C`EV_MINIMAL\*(C'\fR is set in which case it is \f(CW0\fR -(disabled). -.IP "\s-1EV_HEAP_CACHE_AT\s0" 4 -.IX Item "EV_HEAP_CACHE_AT" -Heaps are not very cache-efficient. To improve the cache-efficiency of the -timer and periodics heap, libev can cache the timestamp (\fIat\fR) within -the heap structure (selected by defining \f(CW\*(C`EV_HEAP_CACHE_AT\*(C'\fR to \f(CW1\fR), -which uses 8\-12 bytes more per watcher and a few hundred bytes more code, -but avoids random read accesses on heap changes. This noticably improves -performance noticably with with many (hundreds) of watchers. -.Sp -The default is \f(CW1\fR unless \f(CW\*(C`EV_MINIMAL\*(C'\fR is set in which case it is \f(CW0\fR -(disabled). -.IP "\s-1EV_COMMON\s0" 4 -.IX Item "EV_COMMON" -By default, all watchers have a \f(CW\*(C`void *data\*(C'\fR member. By redefining -this macro to a something else you can include more and other types of -members. You have to define it each time you include one of the files, -though, and it must be identical each time. -.Sp -For example, the perl \s-1EV\s0 module uses something like this: -.Sp -.Vb 3 -\& #define EV_COMMON \e -\& SV *self; /* contains this struct */ \e -\& SV *cb_sv, *fh /* note no trailing ";" */ -.Ve -.IP "\s-1EV_CB_DECLARE\s0 (type)" 4 -.IX Item "EV_CB_DECLARE (type)" -.PD 0 -.IP "\s-1EV_CB_INVOKE\s0 (watcher, revents)" 4 -.IX Item "EV_CB_INVOKE (watcher, revents)" -.IP "ev_set_cb (ev, cb)" 4 -.IX Item "ev_set_cb (ev, cb)" -.PD -Can be used to change the callback member declaration in each watcher, -and the way callbacks are invoked and set. Must expand to a struct member -definition and a statement, respectively. See the \fIev.h\fR header file for -their default definitions. One possible use for overriding these is to -avoid the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument in all cases, or to use -method calls instead of plain function calls in \*(C+. -.Sh "\s-1EXPORTED\s0 \s-1API\s0 \s-1SYMBOLS\s0" -.IX Subsection "EXPORTED API SYMBOLS" -If you need to re-export the \s-1API\s0 (e.g. via a dll) and you need a list of -exported symbols, you can use the provided \fISymbol.*\fR files which list -all public symbols, one per line: -.PP -.Vb 2 -\& Symbols.ev for libev proper -\& Symbols.event for the libevent emulation -.Ve -.PP -This can also be used to rename all public symbols to avoid clashes with -multiple versions of libev linked together (which is obviously bad in -itself, but sometimes it is inconvinient to avoid this). -.PP -A sed command like this will create wrapper \f(CW\*(C`#define\*(C'\fR's that you need to -include before including \fIev.h\fR: -.PP -.Vb 1 -\& <Symbols.ev sed \-e "s/.*/#define & myprefix_&/" >wrap.h -.Ve -.PP -This would create a file \fIwrap.h\fR which essentially looks like this: -.PP -.Vb 4 -\& #define ev_backend myprefix_ev_backend -\& #define ev_check_start myprefix_ev_check_start -\& #define ev_check_stop myprefix_ev_check_stop -\& ... -.Ve -.Sh "\s-1EXAMPLES\s0" -.IX Subsection "EXAMPLES" -For a real-world example of a program the includes libev -verbatim, you can have a look at the \s-1EV\s0 perl module -(<http://software.schmorp.de/pkg/EV.html>). It has the libev files in -the \fIlibev/\fR subdirectory and includes them in the \fI\s-1EV/EVAPI\s0.h\fR (public -interface) and \fI\s-1EV\s0.xs\fR (implementation) files. Only the \fI\s-1EV\s0.xs\fR file -will be compiled. It is pretty complex because it provides its own header -file. -.PP -The usage in rxvt-unicode is simpler. It has a \fIev_cpp.h\fR header file -that everybody includes and which overrides some configure choices: -.PP -.Vb 9 -\& #define EV_MINIMAL 1 -\& #define EV_USE_POLL 0 -\& #define EV_MULTIPLICITY 0 -\& #define EV_PERIODIC_ENABLE 0 -\& #define EV_STAT_ENABLE 0 -\& #define EV_FORK_ENABLE 0 -\& #define EV_CONFIG_H <config.h> -\& #define EV_MINPRI 0 -\& #define EV_MAXPRI 0 -\& -\& #include "ev++.h" -.Ve -.PP -And a \fIev_cpp.C\fR implementation file that contains libev proper and is compiled: -.PP -.Vb 2 -\& #include "ev_cpp.h" -\& #include "ev.c" -.Ve -.SH "THREADS AND COROUTINES" -.IX Header "THREADS AND COROUTINES" -.Sh "\s-1THREADS\s0" -.IX Subsection "THREADS" -Libev itself is completely threadsafe, but it uses no locking. This -means that you can use as many loops as you want in parallel, as long as -only one thread ever calls into one libev function with the same loop -parameter. -.PP -Or put differently: calls with different loop parameters can be done in -parallel from multiple threads, calls with the same loop parameter must be -done serially (but can be done from different threads, as long as only one -thread ever is inside a call at any point in time, e.g. by using a mutex -per loop). -.PP -If you want to know which design is best for your problem, then I cannot -help you but by giving some generic advice: -.IP "\(bu" 4 -most applications have a main thread: use the default libev loop -in that thread, or create a seperate thread running only the default loop. -.Sp -This helps integrating other libraries or software modules that use libev -themselves and don't care/know about threading. -.IP "\(bu" 4 -one loop per thread is usually a good model. -.Sp -Doing this is almost never wrong, sometimes a better-performance model -exists, but it is always a good start. -.IP "\(bu" 4 -other models exist, such as the leader/follower pattern, where one -loop is handed through multiple threads in a kind of round-robbin fashion. -.Sp -Chosing a model is hard \- look around, learn, know that usually you cna do -better than you currently do :\-) -.IP "\(bu" 4 -often you need to talk to some other thread which blocks in the -event loop \- \f(CW\*(C`ev_async\*(C'\fR watchers can be used to wake them up from other -threads safely (or from signal contexts...). -.Sh "\s-1COROUTINES\s0" -.IX Subsection "COROUTINES" -Libev is much more accomodating to coroutines (\*(L"cooperative threads\*(R"): -libev fully supports nesting calls to it's functions from different -coroutines (e.g. you can call \f(CW\*(C`ev_loop\*(C'\fR on the same loop from two -different coroutines and switch freely between both coroutines running the -loop, as long as you don't confuse yourself). The only exception is that -you must not do this from \f(CW\*(C`ev_periodic\*(C'\fR reschedule callbacks. -.PP -Care has been invested into making sure that libev does not keep local -state inside \f(CW\*(C`ev_loop\*(C'\fR, and other calls do not usually allow coroutine -switches. -.SH "COMPLEXITIES" -.IX Header "COMPLEXITIES" -In this section the complexities of (many of) the algorithms used inside -libev will be explained. For complexity discussions about backends see the -documentation for \f(CW\*(C`ev_default_init\*(C'\fR. -.PP -All of the following are about amortised time: If an array needs to be -extended, libev needs to realloc and move the whole array, but this -happens asymptotically never with higher number of elements, so O(1) might -mean it might do a lengthy realloc operation in rare cases, but on average -it is much faster and asymptotically approaches constant time. -.IP "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" 4 -.IX Item "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" -This means that, when you have a watcher that triggers in one hour and -there are 100 watchers that would trigger before that then inserting will -have to skip roughly seven (\f(CW\*(C`ld 100\*(C'\fR) of these watchers. -.IP "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" 4 -.IX Item "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" -That means that changing a timer costs less than removing/adding them -as only the relative motion in the event queue has to be paid for. -.IP "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" 4 -.IX Item "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" -These just add the watcher into an array or at the head of a list. -.IP "Stopping check/prepare/idle/fork/async watchers: O(1)" 4 -.IX Item "Stopping check/prepare/idle/fork/async watchers: O(1)" -.PD 0 -.IP "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % \s-1EV_PID_HASHSIZE\s0))" 4 -.IX Item "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % EV_PID_HASHSIZE))" -.PD -These watchers are stored in lists then need to be walked to find the -correct watcher to remove. The lists are usually short (you don't usually -have many watchers waiting for the same fd or signal). -.IP "Finding the next timer in each loop iteration: O(1)" 4 -.IX Item "Finding the next timer in each loop iteration: O(1)" -By virtue of using a binary or 4\-heap, the next timer is always found at a -fixed position in the storage array. -.IP "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" 4 -.IX Item "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" -A change means an I/O watcher gets started or stopped, which requires -libev to recalculate its status (and possibly tell the kernel, depending -on backend and wether \f(CW\*(C`ev_io_set\*(C'\fR was used). -.IP "Activating one watcher (putting it into the pending state): O(1)" 4 -.IX Item "Activating one watcher (putting it into the pending state): O(1)" -.PD 0 -.IP "Priority handling: O(number_of_priorities)" 4 -.IX Item "Priority handling: O(number_of_priorities)" -.PD -Priorities are implemented by allocating some space for each -priority. When doing priority-based operations, libev usually has to -linearly search all the priorities, but starting/stopping and activating -watchers becomes O(1) w.r.t. priority handling. -.IP "Sending an ev_async: O(1)" 4 -.IX Item "Sending an ev_async: O(1)" -.PD 0 -.IP "Processing ev_async_send: O(number_of_async_watchers)" 4 -.IX Item "Processing ev_async_send: O(number_of_async_watchers)" -.IP "Processing signals: O(max_signal_number)" 4 -.IX Item "Processing signals: O(max_signal_number)" -.PD -Sending involves a syscall \fIiff\fR there were no other \f(CW\*(C`ev_async_send\*(C'\fR -calls in the current loop iteration. Checking for async and signal events -involves iterating over all running async watchers or all signal numbers. -.SH "Win32 platform limitations and workarounds" -.IX Header "Win32 platform limitations and workarounds" -Win32 doesn't support any of the standards (e.g. \s-1POSIX\s0) that libev -requires, and its I/O model is fundamentally incompatible with the \s-1POSIX\s0 -model. Libev still offers limited functionality on this platform in -the form of the \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR backend, and only supports socket -descriptors. This only applies when using Win32 natively, not when using -e.g. cygwin. -.PP -Lifting these limitations would basically require the full -re-implementation of the I/O system. If you are into these kinds of -things, then note that glib does exactly that for you in a very portable -way (note also that glib is the slowest event library known to man). -.PP -There is no supported compilation method available on windows except -embedding it into other applications. -.PP -Due to the many, low, and arbitrary limits on the win32 platform and -the abysmal performance of winsockets, using a large number of sockets -is not recommended (and not reasonable). If your program needs to use -more than a hundred or so sockets, then likely it needs to use a totally -different implementation for windows, as libev offers the \s-1POSIX\s0 readyness -notification model, which cannot be implemented efficiently on windows -(microsoft monopoly games). -.IP "The winsocket select function" 4 -.IX Item "The winsocket select function" -The winsocket \f(CW\*(C`select\*(C'\fR function doesn't follow \s-1POSIX\s0 in that it requires -socket \fIhandles\fR and not socket \fIfile descriptors\fR. This makes select -very inefficient, and also requires a mapping from file descriptors -to socket handles. See the discussion of the \f(CW\*(C`EV_SELECT_USE_FD_SET\*(C'\fR, -\&\f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR and \f(CW\*(C`EV_FD_TO_WIN32_HANDLE\*(C'\fR preprocessor -symbols for more info. -.Sp -The configuration for a \*(L"naked\*(R" win32 using the microsoft runtime -libraries and raw winsocket select is: -.Sp -.Vb 2 -\& #define EV_USE_SELECT 1 -\& #define EV_SELECT_IS_WINSOCKET 1 /* forces EV_SELECT_USE_FD_SET, too */ -.Ve -.Sp -Note that winsockets handling of fd sets is O(n), so you can easily get a -complexity in the O(nA\*^X) range when using win32. -.IP "Limited number of file descriptors" 4 -.IX Item "Limited number of file descriptors" -Windows has numerous arbitrary (and low) limits on things. -.Sp -Early versions of winsocket's select only supported waiting for a maximum -of \f(CW64\fR handles (probably owning to the fact that all windows kernels -can only wait for \f(CW64\fR things at the same time internally; microsoft -recommends spawning a chain of threads and wait for 63 handles and the -previous thread in each. Great). -.Sp -Newer versions support more handles, but you need to define \f(CW\*(C`FD_SETSIZE\*(C'\fR -to some high number (e.g. \f(CW2048\fR) before compiling the winsocket select -call (which might be in libev or elsewhere, for example, perl does its own -select emulation on windows). -.Sp -Another limit is the number of file descriptors in the microsoft runtime -libraries, which by default is \f(CW64\fR (there must be a hidden \fI64\fR fetish -or something like this inside microsoft). You can increase this by calling -\&\f(CW\*(C`_setmaxstdio\*(C'\fR, which can increase this limit to \f(CW2048\fR (another -arbitrary limit), but is broken in many versions of the microsoft runtime -libraries. -.Sp -This might get you to about \f(CW512\fR or \f(CW2048\fR sockets (depending on -windows version and/or the phase of the moon). To get more, you need to -wrap all I/O functions and provide your own fd management, but the cost of -calling select (O(nA\*^X)) will likely make this unworkable. -.SH "PORTABILITY REQUIREMENTS" -.IX Header "PORTABILITY REQUIREMENTS" -In addition to a working ISO-C implementation, libev relies on a few -additional extensions: -.ie n .IP """sig_atomic_t volatile"" must be thread-atomic as well" 4 -.el .IP "\f(CWsig_atomic_t volatile\fR must be thread-atomic as well" 4 -.IX Item "sig_atomic_t volatile must be thread-atomic as well" -The type \f(CW\*(C`sig_atomic_t volatile\*(C'\fR (or whatever is defined as -\&\f(CW\*(C`EV_ATOMIC_T\*(C'\fR) must be atomic w.r.t. accesses from different -threads. This is not part of the specification for \f(CW\*(C`sig_atomic_t\*(C'\fR, but is -believed to be sufficiently portable. -.ie n .IP """sigprocmask"" must work in a threaded environment" 4 -.el .IP "\f(CWsigprocmask\fR must work in a threaded environment" 4 -.IX Item "sigprocmask must work in a threaded environment" -Libev uses \f(CW\*(C`sigprocmask\*(C'\fR to temporarily block signals. This is not -allowed in a threaded program (\f(CW\*(C`pthread_sigmask\*(C'\fR has to be used). Typical -pthread implementations will either allow \f(CW\*(C`sigprocmask\*(C'\fR in the \*(L"main -thread\*(R" or will block signals process-wide, both behaviours would -be compatible with libev. Interaction between \f(CW\*(C`sigprocmask\*(C'\fR and -\&\f(CW\*(C`pthread_sigmask\*(C'\fR could complicate things, however. -.Sp -The most portable way to handle signals is to block signals in all threads -except the initial one, and run the default loop in the initial thread as -well. -.ie n .IP """long"" must be large enough for common memory allocation sizes" 4 -.el .IP "\f(CWlong\fR must be large enough for common memory allocation sizes" 4 -.IX Item "long must be large enough for common memory allocation sizes" -To improve portability and simplify using libev, libev uses \f(CW\*(C`long\*(C'\fR -internally instead of \f(CW\*(C`size_t\*(C'\fR when allocating its data structures. On -non-POSIX systems (Microsoft...) this might be unexpectedly low, but -is still at least 31 bits everywhere, which is enough for hundreds of -millions of watchers. -.ie n .IP """double"" must hold a time value in seconds with enough accuracy" 4 -.el .IP "\f(CWdouble\fR must hold a time value in seconds with enough accuracy" 4 -.IX Item "double must hold a time value in seconds with enough accuracy" -The type \f(CW\*(C`double\*(C'\fR is used to represent timestamps. It is required to -have at least 51 bits of mantissa (and 9 bits of exponent), which is good -enough for at least into the year 4000. This requirement is fulfilled by -implementations implementing \s-1IEEE\s0 754 (basically all existing ones). -.PP -If you know of other additional requirements drop me a note. -.SH "AUTHOR" -.IX Header "AUTHOR" -Marc Lehmann <libev@schmorp.de>. -.SH "POD ERRORS" -.IX Header "POD ERRORS" -Hey! \fBThe above document had some coding errors, which are explained below:\fR -.IP "Around line 3052:" 4 -.IX Item "Around line 3052:" -You forgot a '=back' before '=head2' diff --git a/deps/uv/src/unix/eio/eio.c b/deps/uv/src/unix/eio/eio.c deleted file mode 100644 index 3dfba0a4e6..0000000000 --- a/deps/uv/src/unix/eio/eio.c +++ /dev/null @@ -1,2593 +0,0 @@ -/* - * libeio implementation - * - * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#ifdef EIO_CONFIG_H -# include EIO_CONFIG_H -#endif - -/* Undone by libuv for easy build scripts. - * #ifndef _WIN32 - * # include "config.h" - * #endif - */ - -#include "eio.h" -#include "ecb.h" - -#ifdef EIO_STACKSIZE -# define X_STACKSIZE EIO_STACKSIZE -#endif -#include "xthread.h" - -#include <errno.h> -#include <stddef.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <limits.h> -#include <fcntl.h> -#include <assert.h> - -/* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ -/* intptr_t only comes from stdint.h, says idiot openbsd coder */ -#if HAVE_STDINT_H -# include <stdint.h> -#endif - -#ifndef ECANCELED -# define ECANCELED EDOM -#endif -#ifndef ELOOP -# define ELOOP EDOM -#endif - -#if !defined(ENOTSOCK) && defined(WSAENOTSOCK) -# define ENOTSOCK WSAENOTSOCK -#endif - -static void eio_destroy (eio_req *req); - -#ifndef EIO_FINISH -# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 -#endif - -#ifndef EIO_DESTROY -# define EIO_DESTROY(req) do { if ((req)->destroy) (req)->destroy (req); } while (0) -#endif - -#ifndef EIO_FEED -# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) -#endif - -#ifndef EIO_FD_TO_WIN32_HANDLE -# define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) -#endif -#ifndef EIO_WIN32_HANDLE_TO_FD -# define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) -#endif - -#define EIO_ERRNO(errval,retval) ((errno = errval), retval) - -#define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1) - -#ifdef __sun -# define futimes(fd, times) futimesat (fd, NULL, times) -#endif - -#ifdef _WIN32 - - #include <direct.h> - - #undef PAGESIZE - #define PAGESIZE 4096 /* GetSystemInfo? */ - - /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */ - - #ifdef EIO_STRUCT_STATI64 - /* look at perl's non-sloppy stat */ - #define stat(path,buf) _stati64 (path,buf) - #define fstat(fd,buf) _fstati64 (fd,buf) - #endif - #define lstat(path,buf) stat (path,buf) - #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) - #define mkdir(path,mode) _mkdir (path) - #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) - - #define chmod(path,mode) _chmod (path, mode) - #define dup(fd) _dup (fd) - #define dup2(fd1,fd2) _dup2 (fd1, fd2) - - #define fchmod(fd,mode) EIO_ENOSYS () - #define chown(path,uid,gid) EIO_ENOSYS () - #define fchown(fd,uid,gid) EIO_ENOSYS () - #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ - #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ - #define mknod(path,mode,dev) EIO_ENOSYS () - #define sync() EIO_ENOSYS () - #define readlink(path,buf,s) EIO_ENOSYS () - #define statvfs(path,buf) EIO_ENOSYS () - #define fstatvfs(fd,buf) EIO_ENOSYS () - - #define getcwd(buf,s) _getcwd(buf, s) - #define rmdir(path) _rmdir(path) - - /* rename() uses MoveFile, which fails to overwrite */ - #define rename(old,neu) eio__rename (old, neu) - - static int - eio__rename (const char *old, const char *neu) - { - if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING)) - return 0; - - /* should steal _dosmaperr */ - switch (GetLastError ()) - { - case ERROR_FILE_NOT_FOUND: - case ERROR_PATH_NOT_FOUND: - case ERROR_INVALID_DRIVE: - case ERROR_NO_MORE_FILES: - case ERROR_BAD_NETPATH: - case ERROR_BAD_NET_NAME: - case ERROR_BAD_PATHNAME: - case ERROR_FILENAME_EXCED_RANGE: - errno = ENOENT; - break; - - default: - errno = EACCES; - break; - } - - return -1; - } - - /* we could even stat and see if it exists */ - static int - symlink (const char *old, const char *neu) - { - #if WINVER >= 0x0600 - if (CreateSymbolicLink (neu, old, 1)) - return 0; - - if (CreateSymbolicLink (neu, old, 0)) - return 0; - #endif - - return EIO_ERRNO (ENOENT, -1); - } - - /* POSIX API only */ - #ifndef CreateHardLink - # define CreateHardLink(neu,old,flags) 0 - #endif - #define CreateSymbolicLink(neu,old,flags) 0 - - struct statvfs - { - int dummy; - }; - - #define DT_DIR EIO_DT_DIR - #define DT_REG EIO_DT_REG - #define D_NAME(entp) entp.cFileName - #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) - -#include <sys/utime.h> -#define utime(path, times) _utime(path, times) -#define utimbuf _utimbuf - -#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS) - #define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64 -#else - #define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL -#endif - -struct timezone -{ - int tz_minuteswest; /* minutes W of Greenwich */ - int tz_dsttime; /* type of dst correction */ -}; - -static int gettimeofday(struct timeval *tv, struct timezone *tz) -{ - FILETIME ft; - unsigned __int64 tmpres = 0; - static int tzflag; - - if (NULL != tv) - { - GetSystemTimeAsFileTime(&ft); - - tmpres |= ft.dwHighDateTime; - tmpres <<= 32; - tmpres |= ft.dwLowDateTime; - - /*converting file time to unix epoch*/ - tmpres -= DELTA_EPOCH_IN_MICROSECS; - tmpres /= 10; /*convert into microseconds*/ - tv->tv_sec = (long)(tmpres / 1000000UL); - tv->tv_usec = (long)(tmpres % 1000000UL); - } - - if (NULL != tz) - { - if (!tzflag) - { - _tzset(); - tzflag++; - } - tz->tz_minuteswest = _timezone / 60; - tz->tz_dsttime = _daylight; - } - - return 0; -} - -#else - - #include <sys/time.h> - #include <sys/select.h> - #include <sys/statvfs.h> - #include <unistd.h> - #include <signal.h> - #include <dirent.h> - - #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES - #include <sys/mman.h> - #endif - - #define D_NAME(entp) entp->d_name - - /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ - #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ - #define _DIRENT_HAVE_D_TYPE /* sigh */ - #define D_INO(de) (de)->d_fileno - #define D_NAMLEN(de) (de)->d_namlen - #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 - #define D_INO(de) (de)->d_ino - #endif - - #ifdef _D_EXACT_NAMLEN - #undef D_NAMLEN - #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) - #endif - - #ifdef _DIRENT_HAVE_D_TYPE - #define D_TYPE(de) (de)->d_type - #endif - - #ifndef EIO_STRUCT_DIRENT - #define EIO_STRUCT_DIRENT struct dirent - #endif - -#endif - -#if HAVE_UTIMES -# include <utime.h> -#endif - -#if HAVE_SYS_SYSCALL_H -# include <sys/syscall.h> -#endif - -#if HAVE_SYS_PRCTL_H -# include <sys/prctl.h> -#endif - -#if HAVE_SENDFILE -# if __linux -# include <sys/sendfile.h> -# elif __FreeBSD__ || __DragonFly__ || defined __APPLE__ -# include <sys/socket.h> -# include <sys/uio.h> -# elif __hpux -# include <sys/socket.h> -# elif __solaris -# include <sys/sendfile.h> -# else -# error sendfile support requested but not available -# endif -#endif - -#ifndef D_TYPE -# define D_TYPE(de) 0 -#endif -#ifndef D_INO -# define D_INO(de) 0 -#endif -#ifndef D_NAMLEN -# define D_NAMLEN(entp) strlen (D_NAME (entp)) -#endif - -/* used for struct dirent, AIX doesn't provide it */ -#ifndef NAME_MAX -# define NAME_MAX 4096 -#endif - -/* used for readlink etc. */ -#ifndef PATH_MAX -# define PATH_MAX 4096 -#endif - -/* buffer size for various temporary buffers */ -#define EIO_BUFSIZE 65536 - -#define dBUF \ - char *eio_buf = malloc (EIO_BUFSIZE); \ - errno = ENOMEM; \ - if (!eio_buf) \ - return -1 - -#define FUBd \ - free (eio_buf) - -#define EIO_TICKS ((1000000 + 1023) >> 10) - -struct etp_worker; - -#define ETP_DESTROY(req) eio_destroy (req) -static int eio_finish (eio_req *req); -#define ETP_FINISH(req) eio_finish (req) -static void eio_execute (struct etp_worker *self, eio_req *req); -#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) - -/*****************************************************************************/ - -/* calculate time difference in ~1/EIO_TICKS of a second */ -ecb_inline int -tvdiff (struct timeval *tv1, struct timeval *tv2) -{ - return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS - + ((tv2->tv_usec - tv1->tv_usec) >> 10); -} - -static unsigned int started, idle, wanted = 4; - -static void (*want_poll_cb) (eio_channel *); -static void (*done_poll_cb) (eio_channel *); - -static unsigned int max_poll_time; /* reslock */ -static unsigned int max_poll_reqs; /* reslock */ - -static unsigned int nreqs; /* reqlock */ -static unsigned int nready; /* reqlock */ -static unsigned int npending; /* reqlock */ -static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ -static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ - -static xmutex_t wrklock; -static xmutex_t reslock; -static xmutex_t reqlock; -static xcond_t reqwait; - -/* Fix for test-fs-sir-writes-alot */ -/* Apple's OSX can't safely write() concurrently from 2 threads */ -/* for more info see the thread "fs.write Data Munging" in the nodejs google group */ -/* http://groups.google.com/group/nodejs/browse_thread/thread/c11f8b683f37cef/b18ad9e0a15314c5 */ -/* And the thread "write()s and pwrite()s from multiple threads in OSX" in libev@lists.schmorp.de */ -/* http://lists.schmorp.de/pipermail/libev/2010q4/001185.html */ -#if defined (__APPLE__) -static xmutex_t apple_bug_writelock = X_MUTEX_INIT; -#endif - -#if !HAVE_PREADWRITE -/* - * make our pread/pwrite emulation safe against themselves, but not against - * normal read/write by using a mutex. slows down execution a lot, - * but that's your problem, not mine. - */ -static xmutex_t preadwritelock; -#endif - -typedef struct etp_worker -{ - /* locked by wrklock */ - struct etp_worker *prev, *next; - - xthread_t tid; - - /* locked by reslock, reqlock or wrklock */ - ETP_REQ *req; /* currently processed request */ - -#ifdef ETP_WORKER_COMMON - ETP_WORKER_COMMON -#endif -} etp_worker; - -static etp_worker wrk_first; /* NOT etp */ - -#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) -#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) - -/* worker threads management */ - -static void ecb_cold -etp_worker_clear (etp_worker *wrk) -{ -} - -static void ecb_cold -etp_worker_free (etp_worker *wrk) -{ - wrk->next->prev = wrk->prev; - wrk->prev->next = wrk->next; - - free (wrk); -} - -static unsigned int -etp_nreqs (void) -{ - int retval; - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = nreqs; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - return retval; -} - -static unsigned int -etp_nready (void) -{ - unsigned int retval; - - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = nready; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - - return retval; -} - -static unsigned int -etp_npending (void) -{ - unsigned int retval; - - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = npending; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - - return retval; -} - -static unsigned int -etp_nthreads (void) -{ - unsigned int retval; - - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - retval = started; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); - - return retval; -} - -static etp_reqq req_queue; -static eio_channel default_channel; - -static void ecb_noinline ecb_cold -reqq_init (etp_reqq *q) -{ - int pri; - - for (pri = 0; pri < ETP_NUM_PRI; ++pri) - q->qs[pri] = q->qe[pri] = 0; - - q->size = 0; -} - -static int ecb_noinline -reqq_push (etp_reqq *q, ETP_REQ *req) -{ - int pri = req->pri; - req->next = 0; - - if (q->qe[pri]) - { - q->qe[pri]->next = req; - q->qe[pri] = req; - } - else - q->qe[pri] = q->qs[pri] = req; - - return q->size++; -} - -static ETP_REQ * ecb_noinline -reqq_shift (etp_reqq *q) -{ - int pri; - - if (!q->size) - return 0; - - --q->size; - - for (pri = ETP_NUM_PRI; pri--; ) - { - eio_req *req = q->qs[pri]; - - if (req) - { - if (!(q->qs[pri] = (eio_req *)req->next)) - q->qe[pri] = 0; - - return req; - } - } - - abort (); -} - -static int ecb_cold -etp_init (void (*want_poll)(eio_channel *), void (*done_poll)(eio_channel *)) -{ - X_MUTEX_CREATE (wrklock); - X_MUTEX_CREATE (reslock); - X_MUTEX_CREATE (reqlock); - X_COND_CREATE (reqwait); - - reqq_init (&req_queue); - eio_channel_init (&default_channel, 0); - - wrk_first.next = - wrk_first.prev = &wrk_first; - - started = 0; - idle = 0; - nreqs = 0; - nready = 0; - npending = 0; - - want_poll_cb = want_poll; - done_poll_cb = done_poll; - - return 0; -} - -X_THREAD_PROC (etp_proc); - -static void ecb_cold -etp_start_thread (void) -{ - etp_worker *wrk = calloc (1, sizeof (etp_worker)); - - /*TODO*/ - assert (("unable to allocate worker thread data", wrk)); - - X_LOCK (wrklock); - - if (xthread_create (&wrk->tid, etp_proc, (void *)wrk)) - { - wrk->prev = &wrk_first; - wrk->next = wrk_first.next; - wrk_first.next->prev = wrk; - wrk_first.next = wrk; - ++started; - } - else - free (wrk); - - X_UNLOCK (wrklock); -} - -static void -etp_maybe_start_thread (void) -{ - if (ecb_expect_true (etp_nthreads () >= wanted)) - return; - - /* todo: maybe use idle here, but might be less exact */ - if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) - return; - - etp_start_thread (); -} - -static void ecb_cold -etp_end_thread (void) -{ - eio_req *req = calloc (1, sizeof (eio_req)); - - req->type = -1; - req->pri = ETP_PRI_MAX - ETP_PRI_MIN; - - X_LOCK (reqlock); - reqq_push (&req_queue, req); - X_COND_SIGNAL (reqwait); - X_UNLOCK (reqlock); - - X_LOCK (wrklock); - --started; - X_UNLOCK (wrklock); -} - -void -eio_channel_init(eio_channel *channel, void *data) { - reqq_init(&channel->res_queue); - channel->data = data; -} - -static int -etp_poll (eio_channel *channel) -{ - unsigned int maxreqs; - unsigned int maxtime; - struct timeval tv_start, tv_now; - if(!channel) channel = &default_channel; - - X_LOCK (reslock); - maxreqs = max_poll_reqs; - maxtime = max_poll_time; - X_UNLOCK (reslock); - - if (maxtime) - gettimeofday (&tv_start, 0); - - for (;;) - { - ETP_REQ *req; - - etp_maybe_start_thread (); - - X_LOCK (reslock); - req = reqq_shift (&channel->res_queue); - - if (req) - { - --npending; - - if (!channel->res_queue.size && done_poll_cb) - done_poll_cb (channel); - } - - X_UNLOCK (reslock); - - if (!req) - return 0; - - X_LOCK (reqlock); - --nreqs; - X_UNLOCK (reqlock); - - if (ecb_expect_false (req->type == EIO_GROUP && req->size)) - { - req->int1 = 1; /* mark request as delayed */ - continue; - } - else - { - int res = ETP_FINISH (req); - if (ecb_expect_false (res)) - return res; - } - - if (ecb_expect_false (maxreqs && !--maxreqs)) - break; - - if (maxtime) - { - gettimeofday (&tv_now, 0); - - if (tvdiff (&tv_start, &tv_now) >= maxtime) - break; - } - } - - errno = EAGAIN; - return -1; -} - -static void -etp_cancel (ETP_REQ *req) -{ - req->cancelled = 1; - - eio_grp_cancel (req); -} - -static void -etp_submit (ETP_REQ *req) -{ - req->pri -= ETP_PRI_MIN; - - if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; - if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; - - if (ecb_expect_false (req->type == EIO_GROUP)) - { - /* I hope this is worth it :/ */ - X_LOCK (reqlock); - ++nreqs; - X_UNLOCK (reqlock); - - X_LOCK (reslock); - - ++npending; - - if (!reqq_push (&req->channel->res_queue, req) && want_poll_cb) - want_poll_cb (req->channel); - - X_UNLOCK (reslock); - } - else - { - X_LOCK (reqlock); - ++nreqs; - ++nready; - reqq_push (&req_queue, req); - X_COND_SIGNAL (reqwait); - X_UNLOCK (reqlock); - - etp_maybe_start_thread (); - } -} - -static void ecb_cold -etp_set_max_poll_time (double nseconds) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reslock); - max_poll_time = nseconds * EIO_TICKS; - if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); -} - -static void ecb_cold -etp_set_max_poll_reqs (unsigned int maxreqs) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reslock); - max_poll_reqs = maxreqs; - if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); -} - -static void ecb_cold -etp_set_max_idle (unsigned int nthreads) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - max_idle = nthreads; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); -} - -static void ecb_cold -etp_set_idle_timeout (unsigned int seconds) -{ - if (WORDACCESS_UNSAFE) X_LOCK (reqlock); - idle_timeout = seconds; - if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); -} - -static void ecb_cold -etp_set_min_parallel (unsigned int nthreads) -{ - if (wanted < nthreads) - wanted = nthreads; -} - -static void ecb_cold -etp_set_max_parallel (unsigned int nthreads) -{ - if (wanted > nthreads) - wanted = nthreads; - - while (started > wanted) - etp_end_thread (); -} - -/*****************************************************************************/ - -static void -grp_try_feed (eio_req *grp) -{ - while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) - { - grp->flags &= ~EIO_FLAG_GROUPADD; - - EIO_FEED (grp); - - /* stop if no progress has been made */ - if (!(grp->flags & EIO_FLAG_GROUPADD)) - { - grp->feed = 0; - break; - } - } -} - -static int -grp_dec (eio_req *grp) -{ - --grp->size; - - /* call feeder, if applicable */ - grp_try_feed (grp); - - /* finish, if done */ - if (!grp->size && grp->int1) - return eio_finish (grp); - else - return 0; -} - -static void -eio_destroy (eio_req *req) -{ - if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); - if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); - - EIO_DESTROY (req); -} - -static int -eio_finish (eio_req *req) -{ - int res = EIO_FINISH (req); - - if (req->grp) - { - int res2; - eio_req *grp = req->grp; - - /* unlink request */ - if (req->grp_next) req->grp_next->grp_prev = req->grp_prev; - if (req->grp_prev) req->grp_prev->grp_next = req->grp_next; - - if (grp->grp_first == req) - grp->grp_first = req->grp_next; - - res2 = grp_dec (grp); - - if (!res) - res = res2; - } - - eio_destroy (req); - - return res; -} - -void -eio_grp_cancel (eio_req *grp) -{ - for (grp = grp->grp_first; grp; grp = grp->grp_next) - eio_cancel (grp); -} - -void -eio_cancel (eio_req *req) -{ - etp_cancel (req); -} - -void -eio_submit (eio_req *req) -{ - etp_submit (req); -} - -unsigned int -eio_nreqs (void) -{ - return etp_nreqs (); -} - -unsigned int -eio_nready (void) -{ - return etp_nready (); -} - -unsigned int -eio_npending (void) -{ - return etp_npending (); -} - -unsigned int ecb_cold -eio_nthreads (void) -{ - return etp_nthreads (); -} - -void ecb_cold -eio_set_max_poll_time (double nseconds) -{ - etp_set_max_poll_time (nseconds); -} - -void ecb_cold -eio_set_max_poll_reqs (unsigned int maxreqs) -{ - etp_set_max_poll_reqs (maxreqs); -} - -void ecb_cold -eio_set_max_idle (unsigned int nthreads) -{ - etp_set_max_idle (nthreads); -} - -void ecb_cold -eio_set_idle_timeout (unsigned int seconds) -{ - etp_set_idle_timeout (seconds); -} - -void ecb_cold -eio_set_min_parallel (unsigned int nthreads) -{ - etp_set_min_parallel (nthreads); -} - -void ecb_cold -eio_set_max_parallel (unsigned int nthreads) -{ - etp_set_max_parallel (nthreads); -} - -int eio_poll (eio_channel *channel) -{ - return etp_poll (channel); -} - -/*****************************************************************************/ -/* work around various missing functions */ - -#if !HAVE_PREADWRITE -# undef pread -# undef pwrite -# define pread eio__pread -# define pwrite eio__pwrite - -eio_ssize_t -eio__pread (int fd, void *buf, size_t count, off_t offset) -{ - eio_ssize_t res; - off_t ooffset; - - X_LOCK (preadwritelock); - ooffset = lseek (fd, 0, SEEK_CUR); - lseek (fd, offset, SEEK_SET); - res = read (fd, buf, count); - lseek (fd, ooffset, SEEK_SET); - X_UNLOCK (preadwritelock); - - return res; -} - -eio_ssize_t -eio__pwrite (int fd, void *buf, size_t count, off_t offset) -{ - eio_ssize_t res; - off_t ooffset; - - X_LOCK (preadwritelock); - ooffset = lseek (fd, 0, SEEK_CUR); - lseek (fd, offset, SEEK_SET); - res = write (fd, buf, count); - lseek (fd, ooffset, SEEK_SET); - X_UNLOCK (preadwritelock); - - return res; -} -#endif - -#ifndef HAVE_UTIMES - -# undef utimes -# define utimes(path,times) eio__utimes (path, times) - -static int -eio__utimes (const char *filename, const struct timeval times[2]) -{ - if (times) - { - struct utimbuf buf; - - buf.actime = times[0].tv_sec; - buf.modtime = times[1].tv_sec; - - return utime (filename, &buf); - } - else - return utime (filename, 0); -} - -#endif - -#ifndef HAVE_FUTIMES - -# undef futimes -# define futimes(fd,times) eio__futimes (fd, times) - -static int -eio__futimes (int fd, const struct timeval tv[2]) -{ -#if defined(__linux) && defined(__NR_utimensat) - struct timespec ts[2]; - ts[0].tv_sec = tv[0].tv_sec, ts[0].tv_nsec = tv[0].tv_usec * 1000; - ts[1].tv_sec = tv[1].tv_sec, ts[1].tv_nsec = tv[1].tv_usec * 1000; - return syscall(__NR_utimensat, fd, NULL, ts, 0); -#else - errno = ENOSYS; - return -1; -#endif -} - -#endif - -#if !HAVE_FDATASYNC -# undef fdatasync -# define fdatasync(fd) fsync (fd) -#endif - -static int -eio__syncfs (int fd) -{ - int res; - -#if HAVE_SYS_SYNCFS - res = (int)syscall (__NR_syncfs, (int)(fd)); -#else - res = -1; - errno = ENOSYS; -#endif - - if (res < 0 && errno == ENOSYS && fd >= 0) - sync (); - - return res; -} - -/* sync_file_range always needs emulation */ -static int -eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) -{ -#if HAVE_SYNC_FILE_RANGE - int res; - - if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE - || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE - || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) - { - flags = 0 - | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) - | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) - | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); - } - - res = sync_file_range (fd, offset, nbytes, flags); - - if (!res || errno != ENOSYS) - return res; -#endif - - /* even though we could play tricks with the flags, it's better to always - * call fdatasync, as that matches the expectation of its users best */ - return fdatasync (fd); -} - -static int -eio__fallocate (int fd, int mode, off_t offset, size_t len) -{ -#if HAVE_FALLOCATE - return fallocate (fd, mode, offset, len); -#else - errno = ENOSYS; - return -1; -#endif -} - -#if !HAVE_READAHEAD -# undef readahead -# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) - -static eio_ssize_t -eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) -{ - size_t todo = count; - dBUF; - - while (todo > 0) - { - size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE; - - pread (fd, eio_buf, len, offset); - offset += len; - todo -= len; - } - - FUBd; - - errno = 0; - return count; -} - -#endif - -/* sendfile always needs emulation */ -static eio_ssize_t -eio__sendfile (int ofd, int ifd, off_t offset, size_t count) -{ - eio_ssize_t written = 0; - eio_ssize_t res; - - if (!count) - return 0; - - for (;;) - { -#ifdef __APPLE__ -# undef HAVE_SENDFILE /* broken, as everything on os x */ -#endif -#if HAVE_SENDFILE -# if __linux - off_t soffset = offset; - res = sendfile (ofd, ifd, &soffset, count); - -# elif __FreeBSD__ - /* - * Of course, the freebsd sendfile is a dire hack with no thoughts - * wasted on making it similar to other I/O functions. - */ - off_t sbytes; - res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); - - #if 0 /* according to the manpage, this is correct, but broken behaviour */ - /* freebsd' sendfile will return 0 on success */ - /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ - /* not on e.g. EIO or EPIPE - sounds broken */ - if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) - res = sbytes; - #endif - - /* according to source inspection, this is correct, and useful behaviour */ - if (sbytes) - res = sbytes; - -# elif defined (__APPLE__) - off_t sbytes = count; - res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); - - /* according to the manpage, sbytes is always valid */ - if (sbytes) - res = sbytes; - -# elif __hpux - res = sendfile (ofd, ifd, offset, count, 0, 0); - -# elif __solaris - struct sendfilevec vec; - size_t sbytes; - - vec.sfv_fd = ifd; - vec.sfv_flag = 0; - vec.sfv_off = offset; - vec.sfv_len = count; - - res = sendfilev (ofd, &vec, 1, &sbytes); - - if (res < 0 && sbytes) - res = sbytes; - -# endif - -#elif defined (_WIN32) && 0 - /* does not work, just for documentation of what would need to be done */ - /* actually, cannot be done like this, as TransmitFile changes the file offset, */ - /* libeio guarantees that the file offset does not change, and windows */ - /* has no way to get an independent handle to the same file description */ - HANDLE h = TO_SOCKET (ifd); - SetFilePointer (h, offset, 0, FILE_BEGIN); - res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); - -#else - res = -1; - errno = ENOSYS; -#endif - - /* we assume sendfile can copy at least 128mb in one go */ - if (res <= 128 * 1024 * 1024) - { - if (res > 0) - written += res; - - if (written) - return written; - - break; - } - else - { - /* if we requested more, then probably the kernel was lazy */ - written += res; - offset += res; - count -= res; - - if (!count) - return written; - } - } - - if (res < 0 - && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK - /* BSDs */ -#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ - || errno == ENOTSUP -#endif -#ifdef EOPNOTSUPP /* windows */ - || errno == EOPNOTSUPP /* BSDs */ -#endif -#if __solaris - || errno == EAFNOSUPPORT || errno == EPROTOTYPE -#endif - ) - ) - { - /* emulate sendfile. this is a major pain in the ass */ - dBUF; - - res = 0; - - while (count) - { - eio_ssize_t cnt; - - cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); - - if (cnt <= 0) - { - if (cnt && !res) res = -1; - break; - } - - cnt = write (ofd, eio_buf, cnt); - - if (cnt <= 0) - { - if (cnt && !res) res = -1; - break; - } - - offset += cnt; - res += cnt; - count -= cnt; - } - - FUBd; - } - - return res; -} - -#ifdef PAGESIZE -# define eio_pagesize() PAGESIZE -#else -static intptr_t -eio_pagesize (void) -{ - static intptr_t page; - - if (!page) - page = sysconf (_SC_PAGESIZE); - - return page; -} -#endif - -static void -eio_page_align (void **addr, size_t *length) -{ - intptr_t mask = eio_pagesize () - 1; - - /* round down addr */ - intptr_t adj = mask & (intptr_t)*addr; - - *addr = (void *)((intptr_t)*addr - adj); - *length += adj; - - /* round up length */ - *length = (*length + mask) & ~mask; -} - -#if !_POSIX_MEMLOCK -# define eio__mlockall(a) EIO_ENOSYS () -#else - -static int -eio__mlockall (int flags) -{ - #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 - extern int mallopt (int, int); - mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ - #endif - - if (EIO_MCL_CURRENT != MCL_CURRENT - || EIO_MCL_FUTURE != MCL_FUTURE) - { - flags = 0 - | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) - | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); - } - - return mlockall (flags); -} -#endif - -#if !_POSIX_MEMLOCK_RANGE -# define eio__mlock(a,b) EIO_ENOSYS () -#else - -static int -eio__mlock (void *addr, size_t length) -{ - eio_page_align (&addr, &length); - - return mlock (addr, length); -} - -#endif - -#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) -# define eio__msync(a,b,c) EIO_ENOSYS () -#else - -static int -eio__msync (void *mem, size_t len, int flags) -{ - eio_page_align (&mem, &len); - - if (EIO_MS_ASYNC != MS_SYNC - || EIO_MS_INVALIDATE != MS_INVALIDATE - || EIO_MS_SYNC != MS_SYNC) - { - flags = 0 - | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) - | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) - | (flags & EIO_MS_SYNC ? MS_SYNC : 0); - } - - return msync (mem, len, flags); -} - -#endif - -static int -eio__mtouch (eio_req *req) -{ - void *mem = req->ptr2; - size_t len = req->size; - int flags = req->int1; - - eio_page_align (&mem, &len); - - { - intptr_t addr = (intptr_t)mem; - intptr_t end = addr + len; - intptr_t page = eio_pagesize (); - - if (addr < end) - if (flags & EIO_MT_MODIFY) /* modify */ - do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); - else - do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); - } - - return 0; -} - -/*****************************************************************************/ -/* requests implemented outside eio_execute, because they are so large */ - -static void -eio__realpath (eio_req *req, etp_worker *self) -{ - char *rel = req->ptr1; - char *res; - char *tmp1, *tmp2; -#if SYMLOOP_MAX > 32 - int symlinks = SYMLOOP_MAX; -#else - int symlinks = 32; -#endif - - req->result = -1; - - errno = EINVAL; - if (!rel) - return; - - errno = ENOENT; - if (!*rel) - return; - - if (!req->ptr2) - { - X_LOCK (wrklock); - req->flags |= EIO_FLAG_PTR2_FREE; - X_UNLOCK (wrklock); - req->ptr2 = malloc (PATH_MAX * 3); - - errno = ENOMEM; - if (!req->ptr2) - return; - } - - res = req->ptr2; - tmp1 = res + PATH_MAX; - tmp2 = tmp1 + PATH_MAX; - -#if 0 /* disabled, the musl way to do things is just too racy */ -#if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) - /* on linux we may be able to ask the kernel */ - { - int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); - - if (fd >= 0) - { - sprintf (tmp1, "/proc/self/fd/%d", fd); - req->result = readlink (tmp1, res, PATH_MAX); - close (fd); - - /* here we should probably stat the open file and the disk file, to make sure they still match */ - - if (req->result > 0) - goto done; - } - else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) - return; - } -#endif -#endif - - if (*rel != '/') - { - if (!getcwd (res, PATH_MAX)) - return; - - if (res [1]) /* only use if not / */ - res += strlen (res); - } - - while (*rel) - { - eio_ssize_t len, linklen; - char *beg = rel; - - while (*rel && *rel != '/') - ++rel; - - len = rel - beg; - - if (!len) /* skip slashes */ - { - ++rel; - continue; - } - - if (beg [0] == '.') - { - if (len == 1) - continue; /* . - nop */ - - if (beg [1] == '.' && len == 2) - { - /* .. - back up one component, if possible */ - - while (res != req->ptr2) - if (*--res == '/') - break; - - continue; - } - } - - errno = ENAMETOOLONG; - if (res + 1 + len + 1 >= tmp1) - return; - - /* copy one component */ - *res = '/'; - memcpy (res + 1, beg, len); - - /* zero-terminate, for readlink */ - res [len + 1] = 0; - - /* now check if it's a symlink */ - linklen = readlink (req->ptr2, tmp1, PATH_MAX); - - if (linklen < 0) - { - if (errno != EINVAL) - return; - - /* it's a normal directory. hopefully */ - res += len + 1; - } - else - { - /* yay, it was a symlink - build new path in tmp2 */ - int rellen = strlen (rel); - - errno = ENAMETOOLONG; - if (linklen + 1 + rellen >= PATH_MAX) - return; - - errno = ELOOP; - if (!--symlinks) - return; - - if (*tmp1 == '/') - res = req->ptr2; /* symlink resolves to an absolute path */ - - /* we need to be careful, as rel might point into tmp2 already */ - memmove (tmp2 + linklen + 1, rel, rellen + 1); - tmp2 [linklen] = '/'; - memcpy (tmp2, tmp1, linklen); - - rel = tmp2; - } - } - - /* special case for the lone root path */ - if (res == req->ptr2) - *res++ = '/'; - - req->result = res - (char *)req->ptr2; - -done: - req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ -} - -static signed char -eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) -{ - return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ - : a->inode < b->inode ? -1 - : a->inode > b->inode ? 1 - : 0; -} - -#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 - -#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ -#define EIO_SORT_FAST 60 /* when to only use insertion sort */ - -static void -eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) -{ - unsigned char bits [9 + sizeof (eio_ino_t) * 8]; - unsigned char *bit = bits; - - assert (CHAR_BIT == 8); - assert (sizeof (eio_dirent) * 8 < 256); - assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ - assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ - - if (size <= EIO_SORT_FAST) - return; - - /* first prepare an array of bits to test in our radix sort */ - /* try to take endianness into account, as well as differences in eio_ino_t sizes */ - /* inode_bits must contain all inodes ORed together */ - /* which is used to skip bits that are 0 everywhere, which is very common */ - { - eio_ino_t endianness; - int i, j; - - /* we store the byte offset of byte n into byte n of "endianness" */ - for (i = 0; i < sizeof (eio_ino_t); ++i) - ((unsigned char *)&endianness)[i] = i; - - *bit++ = 0; - - for (i = 0; i < sizeof (eio_ino_t); ++i) - { - /* shifting off the byte offsets out of "endianness" */ - int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; - endianness >>= 8; - - for (j = 0; j < 8; ++j) - if (inode_bits & (((eio_ino_t)1) << (i * 8 + j))) - *bit++ = offs + j; - } - - for (j = 0; j < 8; ++j) - if (score_bits & (1 << j)) - *bit++ = offsetof (eio_dirent, score) * 8 + j; - } - - /* now actually do the sorting (a variant of MSD radix sort) */ - { - eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base; - eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end; - unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8]; - int stk_idx = 0; - - base_stk [stk_idx] = dents; - end_stk [stk_idx] = dents + size; - bit_stk [stk_idx] = bit - 1; - - do - { - base = base_stk [stk_idx]; - end = end_stk [stk_idx]; - bit = bit_stk [stk_idx]; - - for (;;) - { - unsigned char O = *bit >> 3; - unsigned char M = 1 << (*bit & 7); - - eio_dirent *a = base; - eio_dirent *b = end; - - if (b - a < EIO_SORT_CUTOFF) - break; - - /* now bit-partition the array on the bit */ - /* this ugly asymmetric loop seems to perform much better than typical */ - /* partition algos found in the literature */ - do - if (!(((unsigned char *)a)[O] & M)) - ++a; - else if (!(((unsigned char *)--b)[O] & M)) - { - eio_dirent tmp = *a; *a = *b; *b = tmp; - ++a; - } - while (b > a); - - /* next bit, or stop, if no bits left in this path */ - if (!*--bit) - break; - - base_stk [stk_idx] = a; - end_stk [stk_idx] = end; - bit_stk [stk_idx] = bit; - ++stk_idx; - - end = a; - } - } - while (stk_idx--); - } -} - -static void -eio_dent_insertion_sort (eio_dirent *dents, int size) -{ - /* first move the smallest element to the front, to act as a sentinel */ - { - int i; - eio_dirent *min = dents; - - /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ - for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) - if (EIO_DENT_CMP (dents [i], <, *min)) - min = &dents [i]; - - /* swap elements 0 and j (minimum) */ - { - eio_dirent tmp = *dents; *dents = *min; *min = tmp; - } - } - - /* then do standard insertion sort, assuming that all elements are >= dents [0] */ - { - eio_dirent *i, *j; - - for (i = dents + 1; i < dents + size; ++i) - { - eio_dirent value = *i; - - for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) - j [1] = j [0]; - - j [1] = value; - } - } -} - -static void -eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) -{ - if (size <= 1) - return; /* our insertion sort relies on size > 0 */ - - /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ - /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ - eio_dent_radix_sort (dents, size, score_bits, inode_bits); - - /* use an insertion sort at the end, or for small arrays, */ - /* as insertion sort is more efficient for small partitions */ - eio_dent_insertion_sort (dents, size); -} - -/* read a full directory */ -static void -eio__scandir (eio_req *req, etp_worker *self) -{ - char *name, *names; - int namesalloc = 4096 - sizeof (void *) * 4; - int namesoffs = 0; - int flags = req->int1; - eio_dirent *dents = 0; - int dentalloc = 128; - int dentoffs = 0; - eio_ino_t inode_bits = 0; -#ifdef _WIN32 - HANDLE dirp; - WIN32_FIND_DATA entp; -#else - DIR *dirp; - EIO_STRUCT_DIRENT *entp; -#endif - - req->result = -1; - - if (!(flags & EIO_READDIR_DENTS)) - flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); - -#ifdef _WIN32 - { - int len = strlen ((const char *)req->ptr1); - char *path = malloc (MAX_PATH); - const char *fmt; - - if (!len) - fmt = "./*"; - else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\') - fmt = "%s*"; - else - fmt = "%s/*"; - - _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1); - dirp = FindFirstFile (path, &entp); - free (path); - - if (dirp == INVALID_HANDLE_VALUE) - { - dirp = 0; - - /* should steal _dosmaperr */ - switch (GetLastError ()) - { - case ERROR_FILE_NOT_FOUND: - req->result = 0; - break; - - case ERROR_INVALID_NAME: - case ERROR_PATH_NOT_FOUND: - case ERROR_NO_MORE_FILES: - errno = ENOENT; - break; - - case ERROR_NOT_ENOUGH_MEMORY: - errno = ENOMEM; - break; - - default: - errno = EINVAL; - break; - } - } - } -#else - dirp = opendir (req->ptr1); -#endif - - if (req->flags & EIO_FLAG_PTR1_FREE) - free (req->ptr1); - - req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; - req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; - req->ptr2 = names = malloc (namesalloc); - - if (dirp && names && (!flags || dents)) - for (;;) - { - int done; - -#ifdef _WIN32 - done = !dirp; -#else - errno = 0; - entp = readdir (dirp); - done = !entp; -#endif - - if (done) - { -#ifndef _WIN32 - int old_errno = errno; - closedir (dirp); - errno = old_errno; - - if (errno) - break; -#endif - - /* sort etc. */ - req->int1 = flags; - req->result = dentoffs; - - if (flags & EIO_READDIR_STAT_ORDER) - eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); - else if (flags & EIO_READDIR_DIRS_FIRST) - if (flags & EIO_READDIR_FOUND_UNKNOWN) - eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ - else - { - /* in this case, all is known, and we just put dirs first and sort them */ - eio_dirent *oth = dents + dentoffs; - eio_dirent *dir = dents; - - /* now partition dirs to the front, and non-dirs to the back */ - /* by walking from both sides and swapping if necessary */ - while (oth > dir) - { - if (dir->type == EIO_DT_DIR) - ++dir; - else if ((--oth)->type == EIO_DT_DIR) - { - eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; - - ++dir; - } - } - - /* now sort the dirs only (dirs all have the same score) */ - eio_dent_sort (dents, dir - dents, 0, inode_bits); - } - - break; - } - - /* now add the entry to our list(s) */ - name = D_NAME (entp); - - /* skip . and .. entries */ - if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) - { - int len = D_NAMLEN (entp) + 1; - - while (ecb_expect_false (namesoffs + len > namesalloc)) - { - namesalloc *= 2; - req->ptr2 = names = realloc (names, namesalloc); - - if (!names) - break; - } - - memcpy (names + namesoffs, name, len); - - if (dents) - { - struct eio_dirent *ent; - - if (ecb_expect_false (dentoffs == dentalloc)) - { - dentalloc *= 2; - req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); - - if (!dents) - break; - } - - ent = dents + dentoffs; - - ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ - ent->namelen = len - 1; - ent->inode = D_INO (entp); - - inode_bits |= ent->inode; - - switch (D_TYPE (entp)) - { - default: - ent->type = EIO_DT_UNKNOWN; - flags |= EIO_READDIR_FOUND_UNKNOWN; - break; - - #ifdef DT_FIFO - case DT_FIFO: ent->type = EIO_DT_FIFO; break; - #endif - #ifdef DT_CHR - case DT_CHR: ent->type = EIO_DT_CHR; break; - #endif - #ifdef DT_MPC - case DT_MPC: ent->type = EIO_DT_MPC; break; - #endif - #ifdef DT_DIR - case DT_DIR: ent->type = EIO_DT_DIR; break; - #endif - #ifdef DT_NAM - case DT_NAM: ent->type = EIO_DT_NAM; break; - #endif - #ifdef DT_BLK - case DT_BLK: ent->type = EIO_DT_BLK; break; - #endif - #ifdef DT_MPB - case DT_MPB: ent->type = EIO_DT_MPB; break; - #endif - #ifdef DT_REG - case DT_REG: ent->type = EIO_DT_REG; break; - #endif - #ifdef DT_NWK - case DT_NWK: ent->type = EIO_DT_NWK; break; - #endif - #ifdef DT_CMP - case DT_CMP: ent->type = EIO_DT_CMP; break; - #endif - #ifdef DT_LNK - case DT_LNK: ent->type = EIO_DT_LNK; break; - #endif - #ifdef DT_SOCK - case DT_SOCK: ent->type = EIO_DT_SOCK; break; - #endif - #ifdef DT_DOOR - case DT_DOOR: ent->type = EIO_DT_DOOR; break; - #endif - #ifdef DT_WHT - case DT_WHT: ent->type = EIO_DT_WHT; break; - #endif - } - - ent->score = 7; - - if (flags & EIO_READDIR_DIRS_FIRST) - { - if (ent->type == EIO_DT_UNKNOWN) - { - if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ - ent->score = 1; - else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ - ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ - } - else if (ent->type == EIO_DT_DIR) - ent->score = 0; - } - } - - namesoffs += len; - ++dentoffs; - } - - if (EIO_CANCELLED (req)) - { - errno = ECANCELED; - break; - } - -#ifdef _WIN32 - if (!FindNextFile (dirp, &entp)) - { - FindClose (dirp); - dirp = 0; - } -#endif - } -} - -/*****************************************************************************/ - -#define ALLOC(len) \ - if (!req->ptr2) \ - { \ - X_LOCK (wrklock); \ - req->flags |= EIO_FLAG_PTR2_FREE; \ - X_UNLOCK (wrklock); \ - req->ptr2 = malloc (len); \ - if (!req->ptr2) \ - { \ - errno = ENOMEM; \ - req->result = -1; \ - break; \ - } \ - } - -X_THREAD_PROC (etp_proc) -{ - ETP_REQ *req; - struct timespec ts; - etp_worker *self = (etp_worker *)thr_arg; - -#if HAVE_PRCTL_SET_NAME - prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0); -#endif - - /* try to distribute timeouts somewhat evenly */ - ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); - - for (;;) - { - ts.tv_sec = 0; - - X_LOCK (reqlock); - - for (;;) - { - self->req = req = reqq_shift (&req_queue); - - if (req) - break; - - if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ - { - X_UNLOCK (reqlock); - X_LOCK (wrklock); - --started; - X_UNLOCK (wrklock); - goto quit; - } - - ++idle; - - if (idle <= max_idle) - /* we are allowed to idle, so do so without any timeout */ - X_COND_WAIT (reqwait, reqlock); - else - { - /* initialise timeout once */ - if (!ts.tv_sec) - ts.tv_sec = time (0) + idle_timeout; - - if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) - ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ - } - - --idle; - } - - --nready; - - X_UNLOCK (reqlock); - - if (req->type < 0) - goto quit; - - ETP_EXECUTE (self, req); - - X_LOCK (reslock); - - ++npending; - - if (!reqq_push (&req->channel->res_queue, req) && want_poll_cb) - want_poll_cb (req->channel); - - self->req = 0; - etp_worker_clear (self); - - X_UNLOCK (reslock); - } - -quit: - X_LOCK (wrklock); - etp_worker_free (self); - X_UNLOCK (wrklock); - - return 0; -} - -/*****************************************************************************/ - -int ecb_cold -eio_init (void (*want_poll)(eio_channel *), void (*done_poll)(eio_channel *)) -{ -#if !HAVE_PREADWRITE - X_MUTEX_CREATE (preadwritelock); -#endif - - return etp_init (want_poll, done_poll); -} - -ecb_inline void -eio_api_destroy (eio_req *req) -{ - free (req); -} - -#define REQ(rtype) \ - eio_req *req; \ - \ - req = (eio_req *)calloc (1, sizeof *req); \ - if (!req) \ - return 0; \ - \ - req->type = rtype; \ - req->pri = pri; \ - req->finish = cb; \ - req->data = data; \ - req->destroy = eio_api_destroy; \ - req->channel = channel - -#define SEND eio_submit (req); return req - -#define PATH \ - req->flags |= EIO_FLAG_PTR1_FREE; \ - req->ptr1 = strdup (path); \ - if (!req->ptr1) \ - { \ - eio_api_destroy (req); \ - return 0; \ - } - -static void -eio_execute (etp_worker *self, eio_req *req) -{ - if (ecb_expect_false (EIO_CANCELLED (req))) - { - req->result = -1; - req->errorno = ECANCELED; - return; - } - - switch (req->type) - { - case EIO_READ: ALLOC (req->size); - req->result = req->offs >= 0 - ? pread (req->int1, req->ptr2, req->size, req->offs) - : read (req->int1, req->ptr2, req->size); break; - - case EIO_WRITE: -#if defined (__APPLE__) - pthread_mutex_lock (&apple_bug_writelock); -#endif - - req->result = req->offs >= 0 - ? pwrite (req->int1, req->ptr2, req->size, req->offs) - : write (req->int1, req->ptr2, req->size); - -#if defined (__APPLE__) - pthread_mutex_unlock (&apple_bug_writelock); -#endif - break; - - case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; - case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; - - case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); - req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; - case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); - req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; - case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); - req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; - - case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); - req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; - case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); - req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; - - case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; - case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; - case EIO_CHMOD: req->result = chmod (req->ptr1, (eio_mode_t)req->int2); break; - case EIO_FCHMOD: req->result = fchmod (req->int1, (eio_mode_t)req->int2); break; - case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; - case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; - - case EIO_OPEN: req->result = open (req->ptr1, req->int1, (eio_mode_t)req->int2); break; - case EIO_CLOSE: req->result = close (req->int1); break; - case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; - case EIO_UNLINK: req->result = unlink (req->ptr1); break; - case EIO_RMDIR: req->result = rmdir (req->ptr1); break; - case EIO_MKDIR: req->result = mkdir (req->ptr1, (eio_mode_t)req->int2); break; - case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; - case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; - case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; - case EIO_MKNOD: req->result = mknod (req->ptr1, (eio_mode_t)req->int2, (dev_t)req->offs); break; - - case EIO_REALPATH: eio__realpath (req, self); break; - - case EIO_READLINK: ALLOC (PATH_MAX); - req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; - - case EIO_SYNC: req->result = 0; sync (); break; - case EIO_FSYNC: req->result = fsync (req->int1); break; - case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; - case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; - case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; - case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; - case EIO_MTOUCH: req->result = eio__mtouch (req); break; - case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; - case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; - case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; - - case EIO_READDIR: eio__scandir (req, self); break; - - case EIO_BUSY: -#ifdef _WIN32 - Sleep (req->nv1 * 1e3); -#else - { - struct timeval tv; - - tv.tv_sec = req->nv1; - tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; - - req->result = select (0, 0, 0, 0, &tv); - } -#endif - break; - - case EIO_UTIME: - case EIO_FUTIME: - { - struct timeval tv[2]; - struct timeval *times; - - if (req->nv1 != -1. || req->nv2 != -1.) - { - tv[0].tv_sec = req->nv1; - tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.; - tv[1].tv_sec = req->nv2; - tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.; - - times = tv; - } - else - times = 0; - - req->result = req->type == EIO_FUTIME - ? futimes (req->int1, times) - : utimes (req->ptr1, times); - } - break; - - case EIO_GROUP: - abort (); /* handled in eio_request */ - - case EIO_NOP: - req->result = 0; - break; - - case EIO_CUSTOM: - req->feed (req); - break; - - default: - errno = ENOSYS; - req->result = -1; - break; - } - - req->errorno = errno; -} - -#ifndef EIO_NO_WRAPPERS - -eio_req *eio_nop (int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_NOP); SEND; -} - -eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_BUSY); req->nv1 = delay; SEND; -} - -eio_req *eio_sync (int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_SYNC); SEND; -} - -eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FSYNC); req->int1 = fd; SEND; -} - -eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; -} - -eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FDATASYNC); req->int1 = fd; SEND; -} - -eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_SYNCFS); req->int1 = fd; SEND; -} - -eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; -} - -eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; -} - -eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; -} - -eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_MLOCKALL); req->int1 = flags; SEND; -} - -eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; -} - -eio_req *eio_close (int fd, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_CLOSE); req->int1 = fd; SEND; -} - -eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND; -} - -eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; -} - -eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; -} - -eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FSTAT); req->int1 = fd; SEND; -} - -eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FSTATVFS); req->int1 = fd; SEND; -} - -eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; -} - -eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND; -} - -eio_req *eio_fchmod (int fd, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; -} - -eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; -} - -eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND; -} - -eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND; -} - -eio_req *eio_open (const char *path, int flags, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND; -} - -eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND; -} - -eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; -} - -eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; -} - -eio_req *eio_chmod (const char *path, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND; -} - -eio_req *eio_mkdir (const char *path, eio_mode_t mode, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND; -} - -static eio_req * -eio__1path (int type, const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (type); PATH; SEND; -} - -eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_READLINK, path, pri, cb, data, channel); -} - -eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_REALPATH, path, pri, cb, data, channel); -} - -eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_STAT, path, pri, cb, data, channel); -} - -eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_LSTAT, path, pri, cb, data, channel); -} - -eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_STATVFS, path, pri, cb, data, channel); -} - -eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_UNLINK, path, pri, cb, data, channel); -} - -eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__1path (EIO_RMDIR, path, pri, cb, data, channel); -} - -eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; -} - -eio_req *eio_mknod (const char *path, eio_mode_t mode, dev_t dev, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; -} - -static eio_req * -eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (type); PATH; - - req->flags |= EIO_FLAG_PTR2_FREE; - req->ptr2 = strdup (new_path); - if (!req->ptr2) - { - eio_api_destroy (req); - return 0; - } - - SEND; -} - -eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__2path (EIO_LINK, path, new_path, pri, cb, data, channel); -} - -eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data, channel); -} - -eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data, eio_channel *channel) -{ - return eio__2path (EIO_RENAME, path, new_path, pri, cb, data, channel); -} - -eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data, eio_channel *channel) -{ - REQ (EIO_CUSTOM); req->feed = execute; SEND; -} - -#endif - -eio_req *eio_grp (eio_cb cb, void *data, eio_channel *channel) -{ - const int pri = EIO_PRI_MAX; - - REQ (EIO_GROUP); SEND; -} - -#undef REQ -#undef PATH -#undef SEND - -/*****************************************************************************/ -/* grp functions */ - -void -eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) -{ - grp->int2 = limit; - grp->feed = feed; - - grp_try_feed (grp); -} - -void -eio_grp_limit (eio_req *grp, int limit) -{ - grp->int2 = limit; - - grp_try_feed (grp); -} - -void -eio_grp_add (eio_req *grp, eio_req *req) -{ - assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); - - grp->flags |= EIO_FLAG_GROUPADD; - - ++grp->size; - req->grp = grp; - - req->grp_prev = 0; - req->grp_next = grp->grp_first; - - if (grp->grp_first) - grp->grp_first->grp_prev = req; - - grp->grp_first = req; -} - -/*****************************************************************************/ -/* misc garbage */ - -eio_ssize_t -eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) -{ - return eio__sendfile (ofd, ifd, offset, count); -} - diff --git a/deps/uv/src/unix/eio/eio.pod b/deps/uv/src/unix/eio/eio.pod deleted file mode 100644 index da5f33c01d..0000000000 --- a/deps/uv/src/unix/eio/eio.pod +++ /dev/null @@ -1,969 +0,0 @@ -=head1 NAME - -libeio - truly asynchronous POSIX I/O - -=head1 SYNOPSIS - - #include <eio.h> - -=head1 DESCRIPTION - -The newest version of this document is also available as an html-formatted -web page you might find easier to navigate when reading it for the first -time: L<http://pod.tst.eu/http://cvs.schmorp.de/libeio/eio.pod>. - -Note that this library is a by-product of the C<IO::AIO> perl -module, and many of the subtler points regarding requests lifetime -and so on are only documented in its documentation at the -moment: L<http://pod.tst.eu/http://cvs.schmorp.de/IO-AIO/AIO.pm>. - -=head2 FEATURES - -This library provides fully asynchronous versions of most POSIX functions -dealing with I/O. Unlike most asynchronous libraries, this not only -includes C<read> and C<write>, but also C<open>, C<stat>, C<unlink> and -similar functions, as well as less rarely ones such as C<mknod>, C<futime> -or C<readlink>. - -It also offers wrappers around C<sendfile> (Solaris, Linux, HP-UX and -FreeBSD, with emulation on other platforms) and C<readahead> (Linux, with -emulation elsewhere>). - -The goal is to enable you to write fully non-blocking programs. For -example, in a game server, you would not want to freeze for a few seconds -just because the server is running a backup and you happen to call -C<readdir>. - -=head2 TIME REPRESENTATION - -Libeio represents time as a single floating point number, representing the -(fractional) number of seconds since the (POSIX) epoch (somewhere near -the beginning of 1970, details are complicated, don't ask). This type is -called C<eio_tstamp>, but it is guaranteed to be of type C<double> (or -better), so you can freely use C<double> yourself. - -Unlike the name component C<stamp> might indicate, it is also used for -time differences throughout libeio. - -=head2 FORK SUPPORT - -Usage of pthreads in a program changes the semantics of fork -considerably. Specifically, only async-safe functions can be called after -fork. Libeio uses pthreads, so this applies, and makes using fork hard for -anything but relatively fork + exec uses. - -This library only works in the process that initialised it: Forking is -fully supported, but using libeio in any other process than the one that -called C<eio_init> is not. - -You might get around by not I<using> libeio before (or after) forking in -the parent, and using it in the child afterwards. You could also try to -call the L<eio_init> function again in the child, which will brutally -reinitialise all data structures, which isn't POSIX conformant, but -typically works. - -Otherwise, the only recommendation you should follow is: treat fork code -the same way you treat signal handlers, and only ever call C<eio_init> in -the process that uses it, and only once ever. - -=head1 INITIALISATION/INTEGRATION - -Before you can call any eio functions you first have to initialise the -library. The library integrates into any event loop, but can also be used -without one, including in polling mode. - -You have to provide the necessary glue yourself, however. - -=over 4 - -=item int eio_init (void (*want_poll)(void), void (*done_poll)(void)) - -This function initialises the library. On success it returns C<0>, on -failure it returns C<-1> and sets C<errno> appropriately. - -It accepts two function pointers specifying callbacks as argument, both of -which can be C<0>, in which case the callback isn't called. - -There is currently no way to change these callbacks later, or to -"uninitialise" the library again. - -=item want_poll callback - -The C<want_poll> callback is invoked whenever libeio wants attention (i.e. -it wants to be polled by calling C<eio_poll>). It is "edge-triggered", -that is, it will only be called once when eio wants attention, until all -pending requests have been handled. - -This callback is called while locks are being held, so I<you must -not call any libeio functions inside this callback>. That includes -C<eio_poll>. What you should do is notify some other thread, or wake up -your event loop, and then call C<eio_poll>. - -=item done_poll callback - -This callback is invoked when libeio detects that all pending requests -have been handled. It is "edge-triggered", that is, it will only be -called once after C<want_poll>. To put it differently, C<want_poll> and -C<done_poll> are invoked in pairs: after C<want_poll> you have to call -C<eio_poll ()> until either C<eio_poll> indicates that everything has been -handled or C<done_poll> has been called, which signals the same. - -Note that C<eio_poll> might return after C<done_poll> and C<want_poll> -have been called again, so watch out for races in your code. - -As with C<want_poll>, this callback is called while locks are being held, -so you I<must not call any libeio functions form within this callback>. - -=item int eio_poll () - -This function has to be called whenever there are pending requests that -need finishing. You usually call this after C<want_poll> has indicated -that you should do so, but you can also call this function regularly to -poll for new results. - -If any request invocation returns a non-zero value, then C<eio_poll ()> -immediately returns with that value as return value. - -Otherwise, if all requests could be handled, it returns C<0>. If for some -reason not all requests have been handled, i.e. some are still pending, it -returns C<-1>. - -=back - -For libev, you would typically use an C<ev_async> watcher: the -C<want_poll> callback would invoke C<ev_async_send> to wake up the event -loop. Inside the callback set for the watcher, one would call C<eio_poll -()>. - -If C<eio_poll ()> is configured to not handle all results in one go -(i.e. it returns C<-1>) then you should start an idle watcher that calls -C<eio_poll> until it returns something C<!= -1>. - -A full-featured connector between libeio and libev would look as follows -(if C<eio_poll> is handling all requests, it can of course be simplified a -lot by removing the idle watcher logic): - - static struct ev_loop *loop; - static ev_idle repeat_watcher; - static ev_async ready_watcher; - - /* idle watcher callback, only used when eio_poll */ - /* didn't handle all results in one call */ - static void - repeat (EV_P_ ev_idle *w, int revents) - { - if (eio_poll () != -1) - ev_idle_stop (EV_A_ w); - } - - /* eio has some results, process them */ - static void - ready (EV_P_ ev_async *w, int revents) - { - if (eio_poll () == -1) - ev_idle_start (EV_A_ &repeat_watcher); - } - - /* wake up the event loop */ - static void - want_poll (void) - { - ev_async_send (loop, &ready_watcher) - } - - void - my_init_eio () - { - loop = EV_DEFAULT; - - ev_idle_init (&repeat_watcher, repeat); - ev_async_init (&ready_watcher, ready); - ev_async_start (loop &watcher); - - eio_init (want_poll, 0); - } - -For most other event loops, you would typically use a pipe - the event -loop should be told to wait for read readiness on the read end. In -C<want_poll> you would write a single byte, in C<done_poll> you would try -to read that byte, and in the callback for the read end, you would call -C<eio_poll>. - -You don't have to take special care in the case C<eio_poll> doesn't handle -all requests, as the done callback will not be invoked, so the event loop -will still signal readiness for the pipe until I<all> results have been -processed. - - -=head1 HIGH LEVEL REQUEST API - -Libeio has both a high-level API, which consists of calling a request -function with a callback to be called on completion, and a low-level API -where you fill out request structures and submit them. - -This section describes the high-level API. - -=head2 REQUEST SUBMISSION AND RESULT PROCESSING - -You submit a request by calling the relevant C<eio_TYPE> function with the -required parameters, a callback of type C<int (*eio_cb)(eio_req *req)> -(called C<eio_cb> below) and a freely usable C<void *data> argument. - -The return value will either be 0, in case something went really wrong -(which can basically only happen on very fatal errors, such as C<malloc> -returning 0, which is rather unlikely), or a pointer to the newly-created -and submitted C<eio_req *>. - -The callback will be called with an C<eio_req *> which contains the -results of the request. The members you can access inside that structure -vary from request to request, except for: - -=over 4 - -=item C<ssize_t result> - -This contains the result value from the call (usually the same as the -syscall of the same name). - -=item C<int errorno> - -This contains the value of C<errno> after the call. - -=item C<void *data> - -The C<void *data> member simply stores the value of the C<data> argument. - -=back - -The return value of the callback is normally C<0>, which tells libeio to -continue normally. If a callback returns a nonzero value, libeio will -stop processing results (in C<eio_poll>) and will return the value to its -caller. - -Memory areas passed to libeio must stay valid as long as a request -executes, with the exception of paths, which are being copied -internally. Any memory libeio itself allocates will be freed after the -finish callback has been called. If you want to manage all memory passed -to libeio yourself you can use the low-level API. - -For example, to open a file, you could do this: - - static int - file_open_done (eio_req *req) - { - if (req->result < 0) - { - /* open() returned -1 */ - errno = req->errorno; - perror ("open"); - } - else - { - int fd = req->result; - /* now we have the new fd in fd */ - } - - return 0; - } - - /* the first three arguments are passed to open(2) */ - /* the remaining are priority, callback and data */ - if (!eio_open ("/etc/passwd", O_RDONLY, 0, 0, file_open_done, 0)) - abort (); /* something went wrong, we will all die!!! */ - -Note that you additionally need to call C<eio_poll> when the C<want_cb> -indicates that requests are ready to be processed. - -=head2 CANCELLING REQUESTS - -Sometimes the need for a request goes away before the request is -finished. In that case, one can cancel the request by a call to -C<eio_cancel>: - -=over 4 - -=item eio_cancel (eio_req *req) - -Cancel the request (and all its subrequests). If the request is currently -executing it might still continue to execute, and in other cases it might -still take a while till the request is cancelled. - -Even if cancelled, the finish callback will still be invoked - the -callbacks of all cancellable requests need to check whether the request -has been cancelled by calling C<EIO_CANCELLED (req)>: - - static int - my_eio_cb (eio_req *req) - { - if (EIO_CANCELLED (req)) - return 0; - } - -In addition, cancelled requests will I<either> have C<< req->result >> -set to C<-1> and C<errno> to C<ECANCELED>, or I<otherwise> they were -successfully executed, despite being cancelled (e.g. when they have -already been executed at the time they were cancelled). - -C<EIO_CANCELLED> is still true for requests that have successfully -executed, as long as C<eio_cancel> was called on them at some point. - -=back - -=head2 AVAILABLE REQUESTS - -The following request functions are available. I<All> of them return the -C<eio_req *> on success and C<0> on failure, and I<all> of them have the -same three trailing arguments: C<pri>, C<cb> and C<data>. The C<cb> is -mandatory, but in most cases, you pass in C<0> as C<pri> and C<0> or some -custom data value as C<data>. - -=head3 POSIX API WRAPPERS - -These requests simply wrap the POSIX call of the same name, with the same -arguments. If a function is not implemented by the OS and cannot be emulated -in some way, then all of these return C<-1> and set C<errorno> to C<ENOSYS>. - -=over 4 - -=item eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data) - -=item eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) - -=item eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) - -=item eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) - -=item eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data) - -=item eio_rmdir (const char *path, int pri, eio_cb cb, void *data) - -=item eio_unlink (const char *path, int pri, eio_cb cb, void *data) - -=item eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data) - -=item eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) - -=item eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data) - -=item eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data) - -=item eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) - -=item eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) - -=item eio_close (int fd, int pri, eio_cb cb, void *data) - -=item eio_sync (int pri, eio_cb cb, void *data) - -=item eio_fsync (int fd, int pri, eio_cb cb, void *data) - -=item eio_fdatasync (int fd, int pri, eio_cb cb, void *data) - -=item eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data) - -=item eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data) - -=item eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) - -=item eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) - -=item eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) - -These have the same semantics as the syscall of the same name, their -return value is available as C<< req->result >> later. - -=item eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) - -=item eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) - -These two requests are called C<read> and C<write>, but actually wrap -C<pread> and C<pwrite>. On systems that lack these calls (such as cygwin), -libeio uses lseek/read_or_write/lseek and a mutex to serialise the -requests, so all these requests run serially and do not disturb each -other. However, they still disturb the file offset while they run, so it's -not safe to call these functions concurrently with non-libeio functions on -the same fd on these systems. - -Not surprisingly, pread and pwrite are not thread-safe on Darwin (OS/X), -so it is advised not to submit multiple requests on the same fd on this -horrible pile of garbage. - -=item eio_mlockall (int flags, int pri, eio_cb cb, void *data) - -Like C<mlockall>, but the flag value constants are called -C<EIO_MCL_CURRENT> and C<EIO_MCL_FUTURE>. - -=item eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) - -Just like msync, except that the flag values are called C<EIO_MS_ASYNC>, -C<EIO_MS_INVALIDATE> and C<EIO_MS_SYNC>. - -=item eio_readlink (const char *path, int pri, eio_cb cb, void *data) - -If successful, the path read by C<readlink(2)> can be accessed via C<< -req->ptr2 >> and is I<NOT> null-terminated, with the length specified as -C<< req->result >>. - - if (req->result >= 0) - { - char *target = strndup ((char *)req->ptr2, req->result); - - free (target); - } - -=item eio_realpath (const char *path, int pri, eio_cb cb, void *data) - -Similar to the realpath libc function, but unlike that one, C<< -req->result >> is C<-1> on failure. On success, the result is the length -of the returned path in C<ptr2> (which is I<NOT> 0-terminated) - this is -similar to readlink. - -=item eio_stat (const char *path, int pri, eio_cb cb, void *data) - -=item eio_lstat (const char *path, int pri, eio_cb cb, void *data) - -=item eio_fstat (int fd, int pri, eio_cb cb, void *data) - -Stats a file - if C<< req->result >> indicates success, then you can -access the C<struct stat>-like structure via C<< req->ptr2 >>: - - EIO_STRUCT_STAT *statdata = (EIO_STRUCT_STAT *)req->ptr2; - -=item eio_statvfs (const char *path, int pri, eio_cb cb, void *data) - -=item eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) - -Stats a filesystem - if C<< req->result >> indicates success, then you can -access the C<struct statvfs>-like structure via C<< req->ptr2 >>: - - EIO_STRUCT_STATVFS *statdata = (EIO_STRUCT_STATVFS *)req->ptr2; - -=back - -=head3 READING DIRECTORIES - -Reading directories sounds simple, but can be rather demanding, especially -if you want to do stuff such as traversing a directory hierarchy or -processing all files in a directory. Libeio can assist these complex tasks -with it's C<eio_readdir> call. - -=over 4 - -=item eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) - -This is a very complex call. It basically reads through a whole directory -(via the C<opendir>, C<readdir> and C<closedir> calls) and returns either -the names or an array of C<struct eio_dirent>, depending on the C<flags> -argument. - -The C<< req->result >> indicates either the number of files found, or -C<-1> on error. On success, null-terminated names can be found as C<< req->ptr2 >>, -and C<struct eio_dirents>, if requested by C<flags>, can be found via C<< -req->ptr1 >>. - -Here is an example that prints all the names: - - int i; - char *names = (char *)req->ptr2; - - for (i = 0; i < req->result; ++i) - { - printf ("name #%d: %s\n", i, names); - - /* move to next name */ - names += strlen (names) + 1; - } - -Pseudo-entries such as F<.> and F<..> are never returned by C<eio_readdir>. - -C<flags> can be any combination of: - -=over 4 - -=item EIO_READDIR_DENTS - -If this flag is specified, then, in addition to the names in C<ptr2>, -also an array of C<struct eio_dirent> is returned, in C<ptr1>. A C<struct -eio_dirent> looks like this: - - struct eio_dirent - { - int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */ - unsigned short namelen; /* size of filename without trailing 0 */ - unsigned char type; /* one of EIO_DT_* */ - signed char score; /* internal use */ - ino_t inode; /* the inode number, if available, otherwise unspecified */ - }; - -The only members you normally would access are C<nameofs>, which is the -byte-offset from C<ptr2> to the start of the name, C<namelen> and C<type>. - -C<type> can be one of: - -C<EIO_DT_UNKNOWN> - if the type is not known (very common) and you have to C<stat> -the name yourself if you need to know, -one of the "standard" POSIX file types (C<EIO_DT_REG>, C<EIO_DT_DIR>, C<EIO_DT_LNK>, -C<EIO_DT_FIFO>, C<EIO_DT_SOCK>, C<EIO_DT_CHR>, C<EIO_DT_BLK>) -or some OS-specific type (currently -C<EIO_DT_MPC> - multiplexed char device (v7+coherent), -C<EIO_DT_NAM> - xenix special named file, -C<EIO_DT_MPB> - multiplexed block device (v7+coherent), -C<EIO_DT_NWK> - HP-UX network special, -C<EIO_DT_CMP> - VxFS compressed, -C<EIO_DT_DOOR> - solaris door, or -C<EIO_DT_WHT>). - -This example prints all names and their type: - - int i; - struct eio_dirent *ents = (struct eio_dirent *)req->ptr1; - char *names = (char *)req->ptr2; - - for (i = 0; i < req->result; ++i) - { - struct eio_dirent *ent = ents + i; - char *name = names + ent->nameofs; - - printf ("name #%d: %s (type %d)\n", i, name, ent->type); - } - -=item EIO_READDIR_DIRS_FIRST - -When this flag is specified, then the names will be returned in an order -where likely directories come first, in optimal C<stat> order. This is -useful when you need to quickly find directories, or you want to find all -directories while avoiding to stat() each entry. - -If the system returns type information in readdir, then this is used -to find directories directly. Otherwise, likely directories are names -beginning with ".", or otherwise names with no dots, of which names with -short names are tried first. - -=item EIO_READDIR_STAT_ORDER - -When this flag is specified, then the names will be returned in an order -suitable for stat()'ing each one. That is, when you plan to stat() -all files in the given directory, then the returned order will likely -be fastest. - -If both this flag and C<EIO_READDIR_DIRS_FIRST> are specified, then the -likely directories come first, resulting in a less optimal stat order. - -=item EIO_READDIR_FOUND_UNKNOWN - -This flag should not be specified when calling C<eio_readdir>. Instead, -it is being set by C<eio_readdir> (you can access the C<flags> via C<< -req->int1 >>, when any of the C<type>'s found were C<EIO_DT_UNKNOWN>. The -absence of this flag therefore indicates that all C<type>'s are known, -which can be used to speed up some algorithms. - -A typical use case would be to identify all subdirectories within a -directory - you would ask C<eio_readdir> for C<EIO_READDIR_DIRS_FIRST>. If -then this flag is I<NOT> set, then all the entries at the beginning of the -returned array of type C<EIO_DT_DIR> are the directories. Otherwise, you -should start C<stat()>'ing the entries starting at the beginning of the -array, stopping as soon as you found all directories (the count can be -deduced by the link count of the directory). - -=back - -=back - -=head3 OS-SPECIFIC CALL WRAPPERS - -These wrap OS-specific calls (usually Linux ones), and might or might not -be emulated on other operating systems. Calls that are not emulated will -return C<-1> and set C<errno> to C<ENOSYS>. - -=over 4 - -=item eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data) - -Wraps the C<sendfile> syscall. The arguments follow the Linux version, but -libeio supports and will use similar calls on FreeBSD, HP/UX, Solaris and -Darwin. - -If the OS doesn't support some sendfile-like call, or the call fails, -indicating support for the given file descriptor type (for example, -Linux's sendfile might not support file to file copies), then libeio will -emulate the call in userspace, so there are almost no limitations on its -use. - -=item eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data) - -Calls C<readahead(2)>. If the syscall is missing, then the call is -emulated by simply reading the data (currently in 64kiB chunks). - -=item eio_syncfs (int fd, int pri, eio_cb cb, void *data) - -Calls Linux' C<syncfs> syscall, if available. Returns C<-1> and sets -C<errno> to C<ENOSYS> if the call is missing I<but still calls sync()>, -if the C<fd> is C<< >= 0 >>, so you can probe for the availability of the -syscall with a negative C<fd> argument and checking for C<-1/ENOSYS>. - -=item eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) - -Calls C<sync_file_range>. If the syscall is missing, then this is the same -as calling C<fdatasync>. - -Flags can be any combination of C<EIO_SYNC_FILE_RANGE_WAIT_BEFORE>, -C<EIO_SYNC_FILE_RANGE_WRITE> and C<EIO_SYNC_FILE_RANGE_WAIT_AFTER>. - -=item eio_fallocate (int fd, int mode, off_t offset, off_t len, int pri, eio_cb cb, void *data) - -Calls C<fallocate> (note: I<NOT> C<posix_fallocate>!). If the syscall is -missing, then it returns failure and sets C<errno> to C<ENOSYS>. - -The C<mode> argument can be C<0> (for behaviour similar to -C<posix_fallocate>), or C<EIO_FALLOC_FL_KEEP_SIZE>, which keeps the size -of the file unchanged (but still preallocates space beyond end of file). - -=back - -=head3 LIBEIO-SPECIFIC REQUESTS - -These requests are specific to libeio and do not correspond to any OS call. - -=over 4 - -=item eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) - -Reads (C<flags == 0>) or modifies (C<flags == EIO_MT_MODIFY) the given -memory area, page-wise, that is, it reads (or reads and writes back) the -first octet of every page that spans the memory area. - -This can be used to page in some mmapped file, or dirty some pages. Note -that dirtying is an unlocked read-write access, so races can ensue when -the some other thread modifies the data stored in that memory area. - -=item eio_custom (void (*)(eio_req *) execute, int pri, eio_cb cb, void *data) - -Executes a custom request, i.e., a user-specified callback. - -The callback gets the C<eio_req *> as parameter and is expected to read -and modify any request-specific members. Specifically, it should set C<< -req->result >> to the result value, just like other requests. - -Here is an example that simply calls C<open>, like C<eio_open>, but it -uses the C<data> member as filename and uses a hardcoded C<O_RDONLY>. If -you want to pass more/other parameters, you either need to pass some -struct or so via C<data> or provide your own wrapper using the low-level -API. - - static int - my_open_done (eio_req *req) - { - int fd = req->result; - - return 0; - } - - static void - my_open (eio_req *req) - { - req->result = open (req->data, O_RDONLY); - } - - eio_custom (my_open, 0, my_open_done, "/etc/passwd"); - -=item eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data) - -This is a request that takes C<delay> seconds to execute, but otherwise -does nothing - it simply puts one of the worker threads to sleep for this -long. - -This request can be used to artificially increase load, e.g. for debugging -or benchmarking reasons. - -=item eio_nop (int pri, eio_cb cb, void *data) - -This request does nothing, except go through the whole request cycle. This -can be used to measure latency or in some cases to simplify code, but is -not really of much use. - -=back - -=head3 GROUPING AND LIMITING REQUESTS - -There is one more rather special request, C<eio_grp>. It is a very special -aio request: Instead of doing something, it is a container for other eio -requests. - -There are two primary use cases for this: a) bundle many requests into a -single, composite, request with a definite callback and the ability to -cancel the whole request with its subrequests and b) limiting the number -of "active" requests. - -Further below you will find more discussion of these topics - first -follows the reference section detailing the request generator and other -methods. - -=over 4 - -=item eio_req *grp = eio_grp (eio_cb cb, void *data) - -Creates, submits and returns a group request. Note that it doesn't have a -priority, unlike all other requests. - -=item eio_grp_add (eio_req *grp, eio_req *req) - -Adds a request to the request group. - -=item eio_grp_cancel (eio_req *grp) - -Cancels all requests I<in> the group, but I<not> the group request -itself. You can cancel the group request I<and> all subrequests via a -normal C<eio_cancel> call. - -=back - -=head4 GROUP REQUEST LIFETIME - -Left alone, a group request will instantly move to the pending state and -will be finished at the next call of C<eio_poll>. - -The usefulness stems from the fact that, if a subrequest is added to a -group I<before> a call to C<eio_poll>, via C<eio_grp_add>, then the group -will not finish until all the subrequests have finished. - -So the usage cycle of a group request is like this: after it is created, -you normally instantly add a subrequest. If none is added, the group -request will finish on it's own. As long as subrequests are added before -the group request is finished it will be kept from finishing, that is the -callbacks of any subrequests can, in turn, add more requests to the group, -and as long as any requests are active, the group request itself will not -finish. - -=head4 CREATING COMPOSITE REQUESTS - -Imagine you wanted to create an C<eio_load> request that opens a file, -reads it and closes it. This means it has to execute at least three eio -requests, but for various reasons it might be nice if that request looked -like any other eio request. - -This can be done with groups: - -=over 4 - -=item 1) create the request object - -Create a group that contains all further requests. This is the request you -can return as "the load request". - -=item 2) open the file, maybe - -Next, open the file with C<eio_open> and add the request to the group -request and you are finished setting up the request. - -If, for some reason, you cannot C<eio_open> (path is a null ptr?) you -can set C<< grp->result >> to C<-1> to signal an error and let the group -request finish on its own. - -=item 3) open callback adds more requests - -In the open callback, if the open was not successful, copy C<< -req->errorno >> to C<< grp->errorno >> and set C<< grp->errorno >> to -C<-1> to signal an error. - -Otherwise, malloc some memory or so and issue a read request, adding the -read request to the group. - -=item 4) continue issuing requests till finished - -In the real callback, check for errors and possibly continue with -C<eio_close> or any other eio request in the same way. - -As soon as no new requests are added the group request will finish. Make -sure you I<always> set C<< grp->result >> to some sensible value. - -=back - -=head4 REQUEST LIMITING - - -#TODO - -void eio_grp_limit (eio_req *grp, int limit); - - -=back - - -=head1 LOW LEVEL REQUEST API - -#TODO - - -=head1 ANATOMY AND LIFETIME OF AN EIO REQUEST - -A request is represented by a structure of type C<eio_req>. To initialise -it, clear it to all zero bytes: - - eio_req req; - - memset (&req, 0, sizeof (req)); - -A more common way to initialise a new C<eio_req> is to use C<calloc>: - - eio_req *req = calloc (1, sizeof (*req)); - -In either case, libeio neither allocates, initialises or frees the -C<eio_req> structure for you - it merely uses it. - -zero - -#TODO - -=head2 CONFIGURATION - -The functions in this section can sometimes be useful, but the default -configuration will do in most case, so you should skip this section on -first reading. - -=over 4 - -=item eio_set_max_poll_time (eio_tstamp nseconds) - -This causes C<eio_poll ()> to return after it has detected that it was -running for C<nsecond> seconds or longer (this number can be fractional). - -This can be used to limit the amount of time spent handling eio requests, -for example, in interactive programs, you might want to limit this time to -C<0.01> seconds or so. - -Note that: - -=over 4 - -=item a) libeio doesn't know how long your request callbacks take, so the -time spent in C<eio_poll> is up to one callback invocation longer then -this interval. - -=item b) this is implemented by calling C<gettimeofday> after each -request, which can be costly. - -=item c) at least one request will be handled. - -=back - -=item eio_set_max_poll_reqs (unsigned int nreqs) - -When C<nreqs> is non-zero, then C<eio_poll> will not handle more than -C<nreqs> requests per invocation. This is a less costly way to limit the -amount of work done by C<eio_poll> then setting a time limit. - -If you know your callbacks are generally fast, you could use this to -encourage interactiveness in your programs by setting it to C<10>, C<100> -or even C<1000>. - -=item eio_set_min_parallel (unsigned int nthreads) - -Make sure libeio can handle at least this many requests in parallel. It -might be able handle more. - -=item eio_set_max_parallel (unsigned int nthreads) - -Set the maximum number of threads that libeio will spawn. - -=item eio_set_max_idle (unsigned int nthreads) - -Libeio uses threads internally to handle most requests, and will start and stop threads on demand. - -This call can be used to limit the number of idle threads (threads without -work to do): libeio will keep some threads idle in preparation for more -requests, but never longer than C<nthreads> threads. - -In addition to this, libeio will also stop threads when they are idle for -a few seconds, regardless of this setting. - -=item unsigned int eio_nthreads () - -Return the number of worker threads currently running. - -=item unsigned int eio_nreqs () - -Return the number of requests currently handled by libeio. This is the -total number of requests that have been submitted to libeio, but not yet -destroyed. - -=item unsigned int eio_nready () - -Returns the number of ready requests, i.e. requests that have been -submitted but have not yet entered the execution phase. - -=item unsigned int eio_npending () - -Returns the number of pending requests, i.e. requests that have been -executed and have results, but have not been finished yet by a call to -C<eio_poll>). - -=back - -=head1 EMBEDDING - -Libeio can be embedded directly into programs. This functionality is not -documented and not (yet) officially supported. - -Note that, when including C<libeio.m4>, you are responsible for defining -the compilation environment (C<_LARGEFILE_SOURCE>, C<_GNU_SOURCE> etc.). - -If you need to know how, check the C<IO::AIO> perl module, which does -exactly that. - - -=head1 COMPILETIME CONFIGURATION - -These symbols, if used, must be defined when compiling F<eio.c>. - -=over 4 - -=item EIO_STACKSIZE - -This symbol governs the stack size for each eio thread. Libeio itself -was written to use very little stackspace, but when using C<EIO_CUSTOM> -requests, you might want to increase this. - -If this symbol is undefined (the default) then libeio will use its default -stack size (C<sizeof (void *) * 4096> currently). If it is defined, but -C<0>, then the default operating system stack size will be used. In all -other cases, the value must be an expression that evaluates to the desired -stack size. - -=back - - -=head1 PORTABILITY REQUIREMENTS - -In addition to a working ISO-C implementation, libeio relies on a few -additional extensions: - -=over 4 - -=item POSIX threads - -To be portable, this module uses threads, specifically, the POSIX threads -library must be available (and working, which partially excludes many xBSD -systems, where C<fork ()> is buggy). - -=item POSIX-compatible filesystem API - -This is actually a harder portability requirement: The libeio API is quite -demanding regarding POSIX API calls (symlinks, user/group management -etc.). - -=item C<double> must hold a time value in seconds with enough accuracy - -The type C<double> is used to represent timestamps. It is required to -have at least 51 bits of mantissa (and 9 bits of exponent), which is good -enough for at least into the year 4000. This requirement is fulfilled by -implementations implementing IEEE 754 (basically all existing ones). - -=back - -If you know of other additional requirements drop me a note. - - -=head1 AUTHOR - -Marc Lehmann <libeio@schmorp.de>. - diff --git a/deps/uv/src/unix/eio/libeio.m4 b/deps/uv/src/unix/eio/libeio.m4 deleted file mode 100644 index 59151f5348..0000000000 --- a/deps/uv/src/unix/eio/libeio.m4 +++ /dev/null @@ -1,195 +0,0 @@ -dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t, -dnl but that header isn't very portable... -AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h]) - -AC_SEARCH_LIBS( - pthread_create, - [pthread pthreads pthreadVC2], - , - [AC_MSG_ERROR(pthread functions not found)] -) - -AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([[ -#include <sys/types.h> -#include <sys/time.h> -#include <utime.h> -struct timeval tv[2]; -int res; -int main (void) -{ - res = utimes ("/", tv); - return 0; -} -]],ac_cv_utimes=yes,ac_cv_utimes=no)]) -test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available) - -AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[ -#include <sys/types.h> -#include <sys/time.h> -#include <utime.h> -struct timeval tv[2]; -int res; -int fd; -int main (void) -{ - res = futimes (fd, tv); - return 0; -} -]],ac_cv_futimes=yes,ac_cv_futimes=no)]) -test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available) - -AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([ -#include <fcntl.h> -int main (void) -{ - int fd = 0; - size_t count = 2; - ssize_t res; - res = readahead (fd, 0, count); - return 0; -} -],ac_cv_readahead=yes,ac_cv_readahead=no)]) -test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux)) - -AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([ -#include <unistd.h> -int main (void) -{ - int fd = 0; - fdatasync (fd); - return 0; -} -],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)]) -test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available) - -AC_CACHE_CHECK(for pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([ -#include <unistd.h> -int main (void) -{ - int fd = 0; - size_t count = 1; - char buf; - off_t offset = 1; - ssize_t res; - res = pread (fd, &buf, count, offset); - res = pwrite (fd, &buf, count, offset); - return 0; -} -],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)]) -test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available) - -AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([ -# include <sys/types.h> -#if __linux -# include <sys/sendfile.h> -#elif __FreeBSD__ || defined __APPLE__ -# include <sys/socket.h> -# include <sys/uio.h> -#elif __hpux -# include <sys/socket.h> -#else -# error unsupported architecture -#endif -int main (void) -{ - int fd = 0; - off_t offset = 1; - size_t count = 2; - ssize_t res; -#if __linux - res = sendfile (fd, fd, offset, count); -#elif __FreeBSD__ - res = sendfile (fd, fd, offset, count, 0, &offset, 0); -#elif __hpux - res = sendfile (fd, fd, offset, count, 0, 0); -#endif - return 0; -} -],ac_cv_sendfile=yes,ac_cv_sendfile=no)]) -test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported) - -AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([ -#include <fcntl.h> -int main (void) -{ - int fd = 0; - off64_t offset = 1; - off64_t nbytes = 1; - unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER; - ssize_t res; - res = sync_file_range (fd, offset, nbytes, flags); - return 0; -} -],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)]) -test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available) - -AC_CACHE_CHECK(for fallocate, ac_cv_fallocate, [AC_LINK_IFELSE([ -#include <fcntl.h> -int main (void) -{ - int fd = 0; - int mode = 0; - off_t offset = 1; - off_t len = 1; - int res; - res = fallocate (fd, mode, offset, len); - return 0; -} -],ac_cv_fallocate=yes,ac_cv_fallocate=no)]) -test $ac_cv_fallocate = yes && AC_DEFINE(HAVE_FALLOCATE, 1, fallocate(2) is available) - -AC_CACHE_CHECK(for sys_syncfs, ac_cv_sys_syncfs, [AC_LINK_IFELSE([ -#include <unistd.h> -#include <sys/syscall.h> -int main (void) -{ - int res = syscall (__NR_syncfs, (int)0); -} -],ac_cv_sys_syncfs=yes,ac_cv_sys_syncfs=no)]) -test $ac_cv_sys_syncfs = yes && AC_DEFINE(HAVE_SYS_SYNCFS, 1, syscall(__NR_syncfs) is available) - -AC_CACHE_CHECK(for prctl_set_name, ac_cv_prctl_set_name, [AC_LINK_IFELSE([ -#include <sys/prctl.h> -int main (void) -{ - char name[] = "test123"; - int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); -} -],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)]) -test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available) - -dnl ############################################################################# -dnl # these checks exist for the benefit of IO::AIO - -dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required -dnl functionality actually being present. ugh. -AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([ -#include <sys/mman.h> -int main (void) -{ - int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL); - int a = POSIX_MADV_SEQUENTIAL; - int b = POSIX_MADV_RANDOM; - int c = POSIX_MADV_WILLNEED; - int d = POSIX_MADV_DONTNEED; - return 0; -} -],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)]) -test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available) - -AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([ -#define _XOPEN_SOURCE 600 -#include <fcntl.h> -int main (void) -{ - int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL); - int a = POSIX_FADV_SEQUENTIAL; - int b = POSIX_FADV_NOREUSE; - int c = POSIX_FADV_RANDOM; - int d = POSIX_FADV_WILLNEED; - int e = POSIX_FADV_DONTNEED; - return 0; -} -],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)]) -test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available) - diff --git a/deps/uv/src/unix/eio/xthread.h b/deps/uv/src/unix/eio/xthread.h deleted file mode 100644 index 1d7aeba211..0000000000 --- a/deps/uv/src/unix/eio/xthread.h +++ /dev/null @@ -1,164 +0,0 @@ -#ifndef XTHREAD_H_ -#define XTHREAD_H_ - -/* whether word reads are potentially non-atomic. - * this is conservative, likely most arches this runs - * on have atomic word read/writes. - */ -#ifndef WORDACCESS_UNSAFE -# if __i386 || __x86_64 -# define WORDACCESS_UNSAFE 0 -# else -# define WORDACCESS_UNSAFE 1 -# endif -#endif - -///////////////////////////////////////////////////////////////////////////// - -#ifdef _WIN32 - -#include <stdio.h>//D -#include <fcntl.h> -#include <io.h> -#include <time.h> -#include <winsock2.h> -#include <process.h> -#include <windows.h> -#include <pthread.h> -#define sigset_t int -#define sigfillset(a) -#define pthread_sigmask(a,b,c) -#define sigaddset(a,b) -#define sigemptyset(s) - -typedef pthread_mutex_t xmutex_t; -#define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER -#define X_MUTEX_CREATE(mutex) pthread_mutex_init (&(mutex), 0) -#define X_LOCK(mutex) pthread_mutex_lock (&(mutex)) -#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) - -typedef pthread_cond_t xcond_t; -#define X_COND_INIT PTHREAD_COND_INITIALIZER -#define X_COND_CREATE(cond) pthread_cond_init (&(cond), 0) -#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond)) -#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex)) -#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to)) - -typedef pthread_t xthread_t; -#define X_THREAD_PROC(name) void *name (void *thr_arg) -#define X_THREAD_ATFORK(a,b,c) - -static int -xthread_create (xthread_t *tid, void *(*proc)(void *), void *arg) -{ - int retval; - pthread_attr_t attr; - - pthread_attr_init (&attr); - pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); - - retval = pthread_create (tid, &attr, proc, arg) == 0; - - pthread_attr_destroy (&attr); - - return retval; -} - -#define respipe_read(a,b,c) PerlSock_recv ((a), (b), (c), 0) -#define respipe_write(a,b,c) send ((a), (b), (c), 0) -#define respipe_close(a) PerlSock_closesocket ((a)) - -#else -///////////////////////////////////////////////////////////////////////////// - -#if __linux && !defined(_GNU_SOURCE) -# define _GNU_SOURCE -#endif - -/* just in case */ -#define _REENTRANT 1 - -#if __solaris -# define _POSIX_PTHREAD_SEMANTICS 1 -/* try to bribe solaris headers into providing a current pthread API - * despite environment being configured for an older version. - */ -# define __EXTENSIONS__ 1 -#endif - -#include <unistd.h> -#include <fcntl.h> -#include <signal.h> -#include <limits.h> -#include <pthread.h> - -typedef pthread_mutex_t xmutex_t; -#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) -# define X_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP -# define X_MUTEX_CREATE(mutex) \ - do { \ - pthread_mutexattr_t attr; \ - pthread_mutexattr_init (&attr); \ - pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_ADAPTIVE_NP); \ - pthread_mutex_init (&(mutex), &attr); \ - } while (0) -#else -# define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER -# define X_MUTEX_CREATE(mutex) pthread_mutex_init (&(mutex), 0) -#endif -#define X_LOCK(mutex) pthread_mutex_lock (&(mutex)) -#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) - -typedef pthread_cond_t xcond_t; -#define X_COND_INIT PTHREAD_COND_INITIALIZER -#define X_COND_CREATE(cond) pthread_cond_init (&(cond), 0) -#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond)) -#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex)) -#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to)) - -typedef pthread_t xthread_t; -#define X_THREAD_PROC(name) static void *name (void *thr_arg) -#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child) - -// the broken bsd's once more -#ifndef PTHREAD_STACK_MIN -# define PTHREAD_STACK_MIN 0 -#endif - -#ifndef XTHREAD_STACKSIZE -# define XTHREAD_STACKSIZE sizeof (void *) * 4096 -#endif - -static int -xthread_create (xthread_t *tid, void *(*proc)(void *), void *arg) -{ - int retval; - sigset_t fullsigset, oldsigset; - pthread_attr_t attr; - - pthread_attr_init (&attr); - pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); - pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < X_STACKSIZE ? X_STACKSIZE : PTHREAD_STACK_MIN); -#ifdef PTHREAD_SCOPE_PROCESS - pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); -#endif - - sigfillset (&fullsigset); - - pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset); - retval = pthread_create (tid, &attr, proc, arg) == 0; - pthread_sigmask (SIG_SETMASK, &oldsigset, 0); - - pthread_attr_destroy (&attr); - - return retval; -} - -#define respipe_read(a,b,c) read ((a), (b), (c)) -#define respipe_write(a,b,c) write ((a), (b), (c)) -#define respipe_close(a) close ((a)) - -#endif - -#endif - diff --git a/deps/uv/src/unix/error.c b/deps/uv/src/unix/error.c index 2acc047992..9e3e84ad9a 100644 --- a/deps/uv/src/unix/error.c +++ b/deps/uv/src/unix/error.c @@ -102,6 +102,7 @@ uv_err_code uv_translate_sys_error(int sys_errno) { case ENOSPC: return UV_ENOSPC; case EROFS: return UV_EROFS; case ENOMEM: return UV_ENOMEM; + case EDQUOT: return UV_ENOSPC; default: return UV_UNKNOWN; } UNREACHABLE(); diff --git a/deps/uv/src/unix/fs.c b/deps/uv/src/unix/fs.c index 875f0b943f..1e1c653bd5 100644 --- a/deps/uv/src/unix/fs.c +++ b/deps/uv/src/unix/fs.c @@ -21,719 +21,799 @@ #include "uv.h" #include "internal.h" -#include "eio.h" +#include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <pthread.h> #include <dirent.h> -#include <assert.h> -#include <errno.h> -#include <fcntl.h> #include <unistd.h> +#include <fcntl.h> #include <utime.h> -#include <sys/time.h> +#include <poll.h> +#if defined(__linux__) || defined(__sun) +# include <sys/sendfile.h> +#elif defined(__APPLE__) || defined(__FreeBSD__) +# include <sys/socket.h> +# include <sys/uio.h> +#endif -#define ARGS1(a) (a) -#define ARGS2(a,b) (a), (b) -#define ARGS3(a,b,c) (a), (b), (c) -#define ARGS4(a,b,c,d) (a), (b), (c), (d) - -#define WRAP_EIO(type, eiofunc, func, args) \ - uv_fs_req_init(loop, req, type, path, cb); \ - if (cb) { \ - /* async */ \ - req->eio = eiofunc(args, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel); \ - if (!req->eio) { \ - uv__set_sys_error(loop, ENOMEM); \ - return -1; \ - } \ - } else { \ - /* sync */ \ - req->result = func(args); \ - if (req->result) { \ - uv__set_sys_error(loop, errno); \ - } \ - return req->result; \ - } \ - return 0; - - -static void uv_fs_req_init(uv_loop_t* loop, uv_fs_t* req, uv_fs_type fs_type, - const char* path, uv_fs_cb cb) { - /* Make sure the thread pool is initialized. */ - uv_eio_init(loop); - - uv__req_init(loop, req, UV_FS); - req->loop = loop; - req->fs_type = fs_type; - req->cb = cb; - req->result = 0; - req->ptr = NULL; - req->path = path ? strdup(path) : NULL; - req->file = -1; - req->errorno = 0; - req->eio = NULL; - - /* synchronous requests don't increase the reference count */ - if (!req->cb) - uv__req_unregister(req->loop, req); +#define INIT(type) \ + do { \ + uv__req_init((loop), (req), UV_FS_ ## type); \ + (req)->fs_type = UV_FS_ ## type; \ + (req)->errorno = 0; \ + (req)->result = 0; \ + (req)->ptr = NULL; \ + (req)->loop = loop; \ + (req)->path = NULL; \ + (req)->new_path = NULL; \ + (req)->cb = (cb); \ + } \ + while (0) + +#define PATH \ + do { \ + if (NULL == ((req)->path = strdup((path)))) \ + return uv__set_sys_error((loop), ENOMEM); \ + } \ + while (0) + +#define PATH2 \ + do { \ + size_t path_len; \ + size_t new_path_len; \ + \ + path_len = strlen((path)) + 1; \ + new_path_len = strlen((new_path)) + 1; \ + \ + if (NULL == ((req)->path = malloc(path_len + new_path_len))) \ + return uv__set_sys_error((loop), ENOMEM); \ + \ + (req)->new_path = (req)->path + path_len; \ + memcpy((void*) (req)->path, (path), path_len); \ + memcpy((void*) (req)->new_path, (new_path), new_path_len); \ + } \ + while (0) + +#define POST \ + do { \ + if ((cb) != NULL) { \ + uv__work_submit((loop), &(req)->work_req, uv__fs_work, uv__fs_done); \ + return 0; \ + } \ + else { \ + uv__fs_work(&(req)->work_req); \ + uv__fs_done(&(req)->work_req); \ + return (req)->result; \ + } \ + } \ + while (0) + + +static ssize_t uv__fs_fdatasync(uv_fs_t* req) { +#if defined(__linux__) || defined(__sun) || defined(__NetBSD__) + return fdatasync(req->file); +#elif defined(__APPLE__) && defined(F_FULLFSYNC) + return fcntl(req->file, F_FULLFSYNC); +#else + return fsync(req->file); +#endif } -void uv_fs_req_cleanup(uv_fs_t* req) { - if (req->cb) - uv__req_unregister(req->loop, req); - - free((void*)req->path); - req->path = NULL; - - switch (req->fs_type) { - case UV_FS_READDIR: - assert(req->result > 0 ? (req->ptr != NULL) : (req->ptr == NULL)); - free(req->ptr); - req->ptr = NULL; - break; - - case UV_FS_STAT: - case UV_FS_LSTAT: - req->ptr = NULL; - break; - - default: - break; - } +static ssize_t uv__fs_futime(uv_fs_t* req) { +#if defined(__linux__) + /* utimesat() has nanosecond resolution but we stick to microseconds + * for the sake of consistency with other platforms. + */ + struct timespec ts[2]; + ts[0].tv_sec = req->atime; + ts[0].tv_nsec = (unsigned long)(req->atime * 1000000) % 1000000 * 1000; + ts[1].tv_sec = req->mtime; + ts[1].tv_nsec = (unsigned long)(req->mtime * 1000000) % 1000000 * 1000; + return uv__utimesat(req->file, NULL, ts, 0); +#elif HAVE_FUTIMES + struct timeval tv[2]; + tv[0].tv_sec = req->atime; + tv[0].tv_usec = (unsigned long)(req->atime * 1000000) % 1000000; + tv[1].tv_sec = req->mtime; + tv[1].tv_usec = (unsigned long)(req->mtime * 1000000) % 1000000; + return futimes(req->file, tv); +#else /* !HAVE_FUTIMES */ + errno = ENOSYS; + return -1; +#endif } -static int uv__fs_after(eio_req* eio) { - char* name; - int namelen; - int buflen = 0; - uv_fs_t* req = eio->data; - int i; - - assert(req->cb); - - req->result = req->eio->result; - req->errorno = uv_translate_sys_error(req->eio->errorno); - - switch (req->fs_type) { - case UV_FS_READDIR: - /* - * XXX This is pretty bad. - * We alloc and copy the large null terminated string list from libeio. - * This is done because libeio is going to free eio->ptr2 after this - * callback. We must keep it until uv_fs_req_cleanup. If we get rid of - * libeio this can be avoided. - */ - buflen = 0; - name = req->eio->ptr2; - - for (i = 0; i < req->result; i++) { - namelen = strlen(name); - buflen += namelen + 1; - name += namelen; - assert(*name == '\0'); - name++; - } - - if (buflen) { - if ((req->ptr = malloc(buflen))) - memcpy(req->ptr, req->eio->ptr2, buflen); - else - uv__set_sys_error(req->loop, ENOMEM); - } - break; - - case UV_FS_STAT: - case UV_FS_LSTAT: - case UV_FS_FSTAT: - req->ptr = req->eio->ptr2; - break; - - case UV_FS_READLINK: - if (req->result == -1) { - req->ptr = NULL; - break; - } - assert(req->result > 0); - - /* Make zero-terminated copy of req->eio->ptr2 */ - if ((req->ptr = name = malloc(req->result + 1))) { - memcpy(name, req->eio->ptr2, req->result); - name[req->result] = '\0'; - req->result = 0; - } - else { - req->errorno = ENOMEM; - req->result = -1; - } - break; - - default: - break; - } +static ssize_t uv__fs_pwrite(uv_fs_t* req) { +#if defined(__APPLE__) + /* Serialize writes on OS X, concurrent pwrite() calls result in data loss. + * We can't use a per-file descriptor lock, the descriptor may be a dup(). + */ + static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; + ssize_t r; - req->eio = NULL; /* Freed by libeio */ - req->cb(req); + pthread_mutex_lock(&lock); + r = pwrite(req->file, req->buf, req->len, req->off); + pthread_mutex_unlock(&lock); - return 0; + return r; +#else + return pwrite(req->file, req->buf, req->len, req->off); +#endif } - -int uv_fs_close(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { - char* path = NULL; - WRAP_EIO(UV_FS_CLOSE, eio_close, close, ARGS1(file)); +static ssize_t uv__fs_read(uv_fs_t* req) { + if (req->off < 0) + return read(req->file, req->buf, req->len); + else + return pread(req->file, req->buf, req->len, req->off); } -int uv_fs_open(uv_loop_t* loop, uv_fs_t* req, const char* path, int flags, - int mode, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_OPEN, path, cb); +#if defined(__APPLE__) || defined(__OpenBSD__) +static int uv__fs_readdir_filter(struct dirent* dent) { +#else +static int uv__fs_readdir_filter(const struct dirent* dent) { +#endif + return strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0; +} - if (cb) { - /* async */ - req->eio = eio_open(path, flags, mode, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel); - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } - } else { - /* sync */ - req->result = open(path, flags, mode); - if (req->result < 0) { - uv__set_sys_error(loop, errno); - return -1; - } +/* This should have been called uv__fs_scandir(). */ +static ssize_t uv__fs_readdir(uv_fs_t* req) { + struct dirent **dents; + int saved_errno; + size_t off; + size_t len; + char *buf; + int i; + int n; - uv__cloexec(req->result, 1); + n = scandir(req->path, &dents, uv__fs_readdir_filter, alphasort); - return req->result; - } + if (n == -1 || n == 0) + return n; - return 0; -} + len = 0; + for (i = 0; i < n; i++) + len += strlen(dents[i]->d_name) + 1; -int uv_fs_read(uv_loop_t* loop, uv_fs_t* req, uv_file fd, void* buf, - size_t length, int64_t offset, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_READ, NULL, cb); + buf = malloc(len); - if (cb) { - /* async */ - req->eio = eio_read(fd, buf, length, offset, EIO_PRI_DEFAULT, - uv__fs_after, req, &loop->uv_eio_channel); + if (buf == NULL) { + errno = ENOMEM; + n = -1; + goto out; + } - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } + off = 0; - } else { - /* sync */ - req->result = offset < 0 ? - read(fd, buf, length) : - pread(fd, buf, length, offset); + for (i = 0; i < n; i++) { + len = strlen(dents[i]->d_name) + 1; + memcpy(buf + off, dents[i]->d_name, len); + off += len; + } - if (req->result < 0) { - uv__set_sys_error(loop, errno); - return -1; - } + req->ptr = buf; - return req->result; +out: + saved_errno = errno; + { + for (i = 0; i < n; i++) + free(dents[i]); + free(dents); } + errno = saved_errno; - return 0; + return n; } -int uv_fs_unlink(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - WRAP_EIO(UV_FS_UNLINK, eio_unlink, unlink, ARGS1(path)) -} +static ssize_t uv__fs_readlink(uv_fs_t* req) { + ssize_t len; + char* buf; + len = pathconf(req->path, _PC_PATH_MAX); -int uv_fs_write(uv_loop_t* loop, uv_fs_t* req, uv_file file, void* buf, - size_t length, int64_t offset, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_WRITE, NULL, cb); + if (len == -1) { +#if defined(PATH_MAX) + len = PATH_MAX; +#else + len = 4096; +#endif + } - if (cb) { - /* async */ - req->eio = eio_write(file, buf, length, offset, EIO_PRI_DEFAULT, - uv__fs_after, req, &loop->uv_eio_channel); - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } + buf = malloc(len + 1); - } else { - /* sync */ - req->result = offset < 0 ? - write(file, buf, length) : - pwrite(file, buf, length, offset); + if (buf == NULL) { + errno = ENOMEM; + return -1; + } - if (req->result < 0) { - uv__set_sys_error(loop, errno); - return -1; - } + len = readlink(req->path, buf, len); - return req->result; + if (len == -1) { + free(buf); + return -1; } + buf[len] = '\0'; + req->ptr = buf; + return 0; } -int uv_fs_mkdir(uv_loop_t* loop, uv_fs_t* req, const char* path, int mode, - uv_fs_cb cb) { - WRAP_EIO(UV_FS_MKDIR, eio_mkdir, mkdir, ARGS2(path, mode)) -} +static ssize_t uv__fs_sendfile_emul(uv_fs_t* req) { + struct pollfd pfd; + int use_pread; + off_t offset; + ssize_t nsent; + ssize_t nread; + ssize_t nwritten; + size_t buflen; + size_t len; + ssize_t n; + int in_fd; + int out_fd; + char buf[8192]; + + len = req->len; + in_fd = req->flags; + out_fd = req->file; + offset = req->off; + use_pread = 1; + + /* Here are the rules regarding errors: + * + * 1. Read errors are reported only if nsent==0, otherwise we return nsent. + * The user needs to know that some data has already been sent, to stop + * him from sending it twice. + * + * 2. Write errors are always reported. Write errors are bad because they + * mean data loss: we've read data but now we can't write it out. + * + * We try to use pread() and fall back to regular read() if the source fd + * doesn't support positional reads, for example when it's a pipe fd. + * + * If we get EAGAIN when writing to the target fd, we poll() on it until + * it becomes writable again. + * + * FIXME: If we get a write error when use_pread==1, it should be safe to + * return the number of sent bytes instead of an error because pread() + * is, in theory, idempotent. However, special files in /dev or /proc + * may support pread() but not necessarily return the same data on + * successive reads. + * + * FIXME: There is no way now to signal that we managed to send *some* data + * before a write error. + */ + for (nsent = 0; (size_t) nsent < len; ) { + buflen = len - nsent; + if (buflen > sizeof(buf)) + buflen = sizeof(buf); -int uv_fs_rmdir(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - WRAP_EIO(UV_FS_RMDIR, eio_rmdir, rmdir, ARGS1(path)) -} + do + if (use_pread) + nread = pread(in_fd, buf, buflen, offset); + else + nread = read(in_fd, buf, buflen); + while (nread == -1 && errno == EINTR); + if (nread == 0) + goto out; -int uv_fs_readdir(uv_loop_t* loop, uv_fs_t* req, const char* path, int flags, - uv_fs_cb cb) { - int r; - struct dirent* entry; - size_t size = 0; - size_t d_namlen = 0; + if (nread == -1) { + if (use_pread && nsent == 0 && (errno == EIO || errno == ESPIPE)) { + use_pread = 0; + continue; + } - uv_fs_req_init(loop, req, UV_FS_READDIR, path, cb); + if (nsent == 0) + nsent = -1; - if (cb) { - /* async */ - req->eio = eio_readdir(path, flags, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel); - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; + goto out; } - } else { - /* sync */ - DIR* dir = opendir(path); - if (!dir) { - uv__set_sys_error(loop, errno); - req->result = -1; - return -1; - } + for (nwritten = 0; nwritten < nread; ) { + do + n = write(out_fd, buf + nwritten, nread - nwritten); + while (n == -1 && errno == EINTR); - /* req->result stores number of entries */ - req->result = 0; - - while ((entry = readdir(dir))) { - d_namlen = strlen(entry->d_name); - - /* Skip . and .. */ - if ((d_namlen == 1 && entry->d_name[0] == '.') || - (d_namlen == 2 && entry->d_name[0] == '.' && - entry->d_name[1] == '.')) { + if (n != -1) { + nwritten += n; continue; } - req->ptr = realloc(req->ptr, size + d_namlen + 1); - /* TODO check ENOMEM */ - memcpy((char*)req->ptr + size, entry->d_name, d_namlen); - size += d_namlen; - ((char*)req->ptr)[size] = '\0'; - size++; - req->result++; - } + if (errno != EAGAIN && errno != EWOULDBLOCK) { + nsent = -1; + goto out; + } + + pfd.fd = out_fd; + pfd.events = POLLOUT; + pfd.revents = 0; + + do + n = poll(&pfd, 1, -1); + while (n == -1 && errno == EINTR); - r = closedir(dir); - if (r) { - uv__set_sys_error(loop, errno); - req->result = -1; - return -1; + if (n == -1 || (pfd.revents & ~POLLOUT) != 0) { + nsent = -1; + goto out; + } } - return req->result; + offset += nread; + nsent += nread; } - return 0; +out: + if (nsent != -1) + req->off = offset; + + return nsent; } -int uv_fs_stat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - char* pathdup; - int pathlen; +static ssize_t uv__fs_sendfile(uv_fs_t* req) { + int in_fd; + int out_fd; - uv_fs_req_init(loop, req, UV_FS_STAT, path, cb); + in_fd = req->flags; + out_fd = req->file; - /* TODO do this without duplicating the string. */ - /* TODO security */ - pathdup = strdup(path); - pathlen = strlen(path); +#if defined(__linux__) || defined(__sun) + { + off_t off; + ssize_t r; - if (pathlen > 0 && path[pathlen - 1] == '\\') { - /* TODO do not modify input string */ - pathdup[pathlen - 1] = '\0'; - } - - if (cb) { - /* async */ - req->eio = eio_stat(pathdup, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel); + off = req->off; + r = sendfile(out_fd, in_fd, &off, req->len); - free(pathdup); + /* sendfile() on SunOS returns EINVAL if the target fd is not a socket but + * it still writes out data. Fortunately, we can detect it by checking if + * the offset has been updated. + */ + if (r != -1 || off > req->off) { + r = off - req->off; + req->off = off; + return r; + } - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; + if (errno == EINVAL || + errno == EIO || + errno == ENOTSOCK || + errno == EXDEV) { + return uv__fs_sendfile_emul(req); } - } else { - /* sync */ - req->result = stat(pathdup, &req->statbuf); + return -1; + } +#elif defined(__FreeBSD__) || defined(__APPLE__) + { + off_t len; + ssize_t r; + + /* sendfile() on FreeBSD and Darwin returns EAGAIN if the target fd is in + * non-blocking mode and not all data could be written. If a non-zero + * number of bytes have been sent, we don't consider it an error. + */ + len = 0; - free(pathdup); +#if defined(__FreeBSD__) + r = sendfile(in_fd, out_fd, req->off, req->len, NULL, &len, 0); +#else + r = sendfile(in_fd, out_fd, req->off, &len, NULL, 0); +#endif - if (req->result < 0) { - uv__set_sys_error(loop, errno); - return -1; + if (r != -1 || len != 0) { + req->off += len; + return (ssize_t) len; } - req->ptr = &req->statbuf; - return req->result; - } + if (errno == EINVAL || + errno == EIO || + errno == ENOTSOCK || + errno == EXDEV) { + return uv__fs_sendfile_emul(req); + } - return 0; + return -1; + } +#else + return uv__fs_sendfile_emul(req); +#endif } -int uv_fs_fstat(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { - uv_fs_req_init(loop, req, UV_FS_FSTAT, NULL, cb); - - if (cb) { - /* async */ - req->eio = eio_fstat(file, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel); - - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; +static ssize_t uv__fs_utime(uv_fs_t* req) { + struct utimbuf buf; + buf.actime = req->atime; + buf.modtime = req->mtime; + return utime(req->path, &buf); /* TODO use utimes() where available */ +} + + +static ssize_t uv__fs_write(uv_fs_t* req) { + if (req->off < 0) + return write(req->file, req->buf, req->len); + else + return uv__fs_pwrite(req); +} + + +static void uv__fs_work(struct uv__work* w) { + int retry_on_eintr; + uv_fs_t* req; + ssize_t r; + + req = container_of(w, uv_fs_t, work_req); + retry_on_eintr = !(req->fs_type == UV_FS_CLOSE); + + do { + errno = 0; + +#define X(type, action) \ + case UV_FS_ ## type: \ + r = action; \ + break; + + switch (req->fs_type) { + X(CHMOD, chmod(req->path, req->mode)); + X(CHOWN, chown(req->path, req->uid, req->gid)); + X(CLOSE, close(req->file)); + X(FCHMOD, fchmod(req->file, req->mode)); + X(FCHOWN, fchown(req->file, req->uid, req->gid)); + X(FDATASYNC, uv__fs_fdatasync(req)); + X(FSTAT, fstat(req->file, &req->statbuf)); + X(FSYNC, fsync(req->file)); + X(FTRUNCATE, ftruncate(req->file, req->off)); + X(FUTIME, uv__fs_futime(req)); + X(LSTAT, lstat(req->path, &req->statbuf)); + X(LINK, link(req->path, req->new_path)); + X(MKDIR, mkdir(req->path, req->mode)); + X(OPEN, open(req->path, req->flags, req->mode)); + X(READ, uv__fs_read(req)); + X(READDIR, uv__fs_readdir(req)); + X(READLINK, uv__fs_readlink(req)); + X(RENAME, rename(req->path, req->new_path)); + X(RMDIR, rmdir(req->path)); + X(SENDFILE, uv__fs_sendfile(req)); + X(STAT, stat(req->path, &req->statbuf)); + X(SYMLINK, symlink(req->path, req->new_path)); + X(UNLINK, unlink(req->path)); + X(UTIME, uv__fs_utime(req)); + X(WRITE, uv__fs_write(req)); + default: abort(); } - } else { - /* sync */ - req->result = fstat(file, &req->statbuf); +#undef X + } + while (r == -1 && errno == EINTR && retry_on_eintr); - if (req->result < 0) { - uv__set_sys_error(loop, errno); - return -1; - } + req->errorno = errno; + req->result = r; + if (r == 0 && (req->fs_type == UV_FS_STAT || + req->fs_type == UV_FS_FSTAT || + req->fs_type == UV_FS_LSTAT)) { req->ptr = &req->statbuf; - return req->result; } - - return 0; } -int uv_fs_rename(uv_loop_t* loop, uv_fs_t* req, const char* path, const char* new_path, - uv_fs_cb cb) { - WRAP_EIO(UV_FS_RENAME, eio_rename, rename, ARGS2(path, new_path)) -} +static void uv__fs_done(struct uv__work* w) { + uv_fs_t* req; + req = container_of(w, uv_fs_t, work_req); + uv__req_unregister(req->loop, req); -int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { - char* path = NULL; - WRAP_EIO(UV_FS_FSYNC, eio_fsync, fsync, ARGS1(file)) + if (req->errorno != 0) { + req->errorno = uv_translate_sys_error(req->errorno); + uv__set_artificial_error(req->loop, req->errorno); + } + + if (req->cb != NULL) + req->cb(req); } -#if defined(__APPLE__) && defined(F_FULLFSYNC) -ssize_t uv__fs_fdatasync(uv_file file) { - return fcntl(file, F_FULLFSYNC); +int uv_fs_chmod(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + int mode, + uv_fs_cb cb) { + INIT(CHMOD); + PATH; + req->mode = mode; + POST; } -void uv__fs_fdatasync_work(eio_req* eio) { - uv_fs_t* req = eio->data; - - eio->result = uv__fs_fdatasync(req->file); +int uv_fs_chown(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + int uid, + int gid, + uv_fs_cb cb) { + INIT(CHOWN); + PATH; + req->uid = uid; + req->gid = gid; + POST; } -#endif -int uv_fs_fdatasync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { - char* path = NULL; -#if defined(__FreeBSD__) \ - || (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1060) - /* freebsd and pre-10.6 darwin don't have fdatasync, - * do a full fsync instead. - */ - WRAP_EIO(UV_FS_FDATASYNC, eio_fdatasync, fsync, ARGS1(file)) -#elif defined(__APPLE__) && defined(F_FULLFSYNC) - /* OSX >= 10.6 does have fdatasync, but better use fcntl anyway */ - uv_fs_req_init(loop, req, UV_FS_FDATASYNC, path, cb); +int uv_fs_close(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { + INIT(CLOSE); req->file = file; - - if (cb) { - /* async */ - req->eio = eio_custom(uv__fs_fdatasync_work, - EIO_PRI_DEFAULT, - uv__fs_after, - req, - &loop->uv_eio_channel); - if (req->eio == NULL) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } - } else { - /* sync */ - req->result = uv__fs_fdatasync(file); - if (req->result) { - uv__set_sys_error(loop, errno); - } - return req->result; - } - return 0; -#else - WRAP_EIO(UV_FS_FDATASYNC, eio_fdatasync, fdatasync, ARGS1(file)) -#endif + POST; } -int uv_fs_ftruncate(uv_loop_t* loop, uv_fs_t* req, uv_file file, int64_t offset, - uv_fs_cb cb) { - char* path = NULL; - WRAP_EIO(UV_FS_FTRUNCATE, eio_ftruncate, ftruncate, ARGS2(file, offset)) +int uv_fs_fchmod(uv_loop_t* loop, + uv_fs_t* req, + uv_file file, + int mode, + uv_fs_cb cb) { + INIT(FCHMOD); + req->file = file; + req->mode = mode; + POST; } -int uv_fs_sendfile(uv_loop_t* loop, uv_fs_t* req, uv_file out_fd, uv_file in_fd, - int64_t in_offset, size_t length, uv_fs_cb cb) { - char* path = NULL; - WRAP_EIO(UV_FS_SENDFILE, eio_sendfile, eio_sendfile_sync, - ARGS4(out_fd, in_fd, in_offset, length)) +int uv_fs_fchown(uv_loop_t* loop, + uv_fs_t* req, + uv_file file, + int uid, + int gid, + uv_fs_cb cb) { + INIT(FCHOWN); + req->file = file; + req->uid = uid; + req->gid = gid; + POST; } -int uv_fs_chmod(uv_loop_t* loop, uv_fs_t* req, const char* path, int mode, - uv_fs_cb cb) { - WRAP_EIO(UV_FS_CHMOD, eio_chmod, chmod, ARGS2(path, mode)) +int uv_fs_fdatasync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { + INIT(FDATASYNC); + req->file = file; + POST; } -static int _utime(const char* path, double atime, double mtime) { - struct utimbuf buf; - buf.actime = atime; - buf.modtime = mtime; - return utime(path, &buf); +int uv_fs_fstat(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { + INIT(FSTAT); + req->file = file; + POST; } -int uv_fs_utime(uv_loop_t* loop, uv_fs_t* req, const char* path, double atime, - double mtime, uv_fs_cb cb) { - WRAP_EIO(UV_FS_UTIME, eio_utime, _utime, ARGS3(path, atime, mtime)) +int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) { + INIT(FSYNC); + req->file = file; + POST; } -static int _futime(const uv_file fd, double atime, double mtime) { -#if __linux__ - /* utimesat() has nanosecond resolution but we stick to microseconds - * for the sake of consistency with other platforms. - */ - struct timespec ts[2]; - ts[0].tv_sec = atime; - ts[0].tv_nsec = (unsigned long)(atime * 1000000) % 1000000 * 1000; - ts[1].tv_sec = mtime; - ts[1].tv_nsec = (unsigned long)(mtime * 1000000) % 1000000 * 1000; - return uv__utimesat(fd, NULL, ts, 0); -#elif HAVE_FUTIMES - struct timeval tv[2]; - tv[0].tv_sec = atime; - tv[0].tv_usec = (unsigned long)(atime * 1000000) % 1000000; - tv[1].tv_sec = mtime; - tv[1].tv_usec = (unsigned long)(mtime * 1000000) % 1000000; - return futimes(fd, tv); -#else /* !HAVE_FUTIMES */ - errno = ENOSYS; - return -1; -#endif +int uv_fs_ftruncate(uv_loop_t* loop, + uv_fs_t* req, + uv_file file, + int64_t off, + uv_fs_cb cb) { + INIT(FTRUNCATE); + req->file = file; + req->off = off; + POST; } -int uv_fs_futime(uv_loop_t* loop, uv_fs_t* req, uv_file file, double atime, - double mtime, uv_fs_cb cb) { - const char* path = NULL; - WRAP_EIO(UV_FS_FUTIME, eio_futime, _futime, ARGS3(file, atime, mtime)) +int uv_fs_futime(uv_loop_t* loop, + uv_fs_t* req, + uv_file file, + double atime, + double mtime, + uv_fs_cb cb) { + INIT(FUTIME); + req->file = file; + req->atime = atime; + req->mtime = mtime; + POST; } int uv_fs_lstat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { - char* pathdup; - int pathlen; - - uv_fs_req_init(loop, req, UV_FS_LSTAT, path, cb); - - /* TODO do this without duplicating the string. */ - /* TODO security */ - pathdup = strdup(path); - pathlen = strlen(path); - - if (pathlen > 0 && path[pathlen - 1] == '\\') { - /* TODO do not modify input string */ - pathdup[pathlen - 1] = '\0'; - } - - if (cb) { - /* async */ - req->eio = eio_lstat(pathdup, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel); - - free(pathdup); - - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } - - } else { - /* sync */ - req->result = lstat(pathdup, &req->statbuf); - - free(pathdup); - - if (req->result < 0) { - uv__set_sys_error(loop, errno); - return -1; - } - - req->ptr = &req->statbuf; - return req->result; - } - - return 0; + INIT(LSTAT); + PATH; + POST; } -int uv_fs_link(uv_loop_t* loop, uv_fs_t* req, const char* path, - const char* new_path, uv_fs_cb cb) { - WRAP_EIO(UV_FS_LINK, eio_link, link, ARGS2(path, new_path)) +int uv_fs_link(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + const char* new_path, + uv_fs_cb cb) { + INIT(LINK); + PATH2; + POST; } -int uv_fs_symlink(uv_loop_t* loop, uv_fs_t* req, const char* path, - const char* new_path, int flags, uv_fs_cb cb) { - WRAP_EIO(UV_FS_SYMLINK, eio_symlink, symlink, ARGS2(path, new_path)) +int uv_fs_mkdir(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + int mode, + uv_fs_cb cb) { + INIT(MKDIR); + PATH; + req->mode = mode; + POST; } -int uv_fs_readlink(uv_loop_t* loop, uv_fs_t* req, const char* path, - uv_fs_cb cb) { - ssize_t size; - char* buf; - - uv_fs_req_init(loop, req, UV_FS_READLINK, path, cb); - - if (cb) { - if ((req->eio = eio_readlink(path, EIO_PRI_DEFAULT, uv__fs_after, req, &loop->uv_eio_channel))) { - return 0; - } else { - uv__set_sys_error(loop, ENOMEM); - return -1; - } - } else { - /* pathconf(_PC_PATH_MAX) may return -1 to signify that path - * lengths have no upper limit or aren't suitable for malloc'ing. - */ - if ((size = pathconf(path, _PC_PATH_MAX)) == -1) { -#if defined(PATH_MAX) - size = PATH_MAX; -#else - size = 4096; -#endif - } +int uv_fs_open(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + int flags, + int mode, + uv_fs_cb cb) { + INIT(OPEN); + PATH; + req->flags = flags; + req->mode = mode; + POST; +} - if ((buf = malloc(size + 1)) == NULL) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } - if ((size = readlink(path, buf, size)) == -1) { - req->errorno = errno; - req->result = -1; - free(buf); - } else { - /* Cannot conceivably fail since it shrinks the buffer. */ - buf = realloc(buf, size + 1); - buf[size] = '\0'; - req->result = 0; - req->ptr = buf; - } +int uv_fs_read(uv_loop_t* loop, uv_fs_t* req, + uv_file file, + void* buf, + size_t len, + int64_t off, + uv_fs_cb cb) { + INIT(READ); + req->file = file; + req->buf = buf; + req->len = len; + req->off = off; + POST; +} - return req->result; - } - assert(0 && "unreachable"); +int uv_fs_readdir(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + int flags, + uv_fs_cb cb) { + INIT(READDIR); + PATH; + req->flags = flags; + POST; } -int uv_fs_fchmod(uv_loop_t* loop, uv_fs_t* req, uv_file file, int mode, - uv_fs_cb cb) { - char* path = NULL; - WRAP_EIO(UV_FS_FCHMOD, eio_fchmod, fchmod, ARGS2(file, mode)) +int uv_fs_readlink(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + uv_fs_cb cb) { + INIT(READLINK); + PATH; + POST; } -int uv_fs_chown(uv_loop_t* loop, uv_fs_t* req, const char* path, int uid, - int gid, uv_fs_cb cb) { - WRAP_EIO(UV_FS_CHOWN, eio_chown, chown, ARGS3(path, uid, gid)) +int uv_fs_rename(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + const char* new_path, + uv_fs_cb cb) { + INIT(RENAME); + PATH2; + POST; } -int uv_fs_fchown(uv_loop_t* loop, uv_fs_t* req, uv_file file, int uid, int gid, - uv_fs_cb cb) { - char* path = NULL; - WRAP_EIO(UV_FS_FCHOWN, eio_fchown, fchown, ARGS3(file, uid, gid)) +int uv_fs_rmdir(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { + INIT(RMDIR); + PATH; + POST; } -static void uv__work(eio_req* eio) { - uv_work_t* req = eio->data; - if (req->work_cb) { - req->work_cb(req); - } +int uv_fs_sendfile(uv_loop_t* loop, + uv_fs_t* req, + uv_file out_fd, + uv_file in_fd, + int64_t off, + size_t len, + uv_fs_cb cb) { + INIT(SENDFILE); + req->flags = in_fd; /* hack */ + req->file = out_fd; + req->off = off; + req->len = len; + POST; } -static int uv__after_work(eio_req *eio) { - uv_work_t* req = eio->data; - uv__req_unregister(req->loop, req); - if (req->after_work_cb) { - req->after_work_cb(req); - } - return 0; +int uv_fs_stat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { + INIT(STAT); + PATH; + POST; } -int uv_queue_work(uv_loop_t* loop, uv_work_t* req, uv_work_cb work_cb, - uv_after_work_cb after_work_cb) { - void* data = req->data; +int uv_fs_symlink(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + const char* new_path, + int flags, + uv_fs_cb cb) { + INIT(SYMLINK); + PATH2; + req->flags = flags; + POST; +} - uv_eio_init(loop); - uv__req_init(loop, req, UV_WORK); - req->loop = loop; - req->data = data; - req->work_cb = work_cb; - req->after_work_cb = after_work_cb; +int uv_fs_unlink(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) { + INIT(UNLINK); + PATH; + POST; +} + + +int uv_fs_utime(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + double atime, + double mtime, + uv_fs_cb cb) { + INIT(UTIME); + PATH; + req->atime = atime; + req->mtime = mtime; + POST; +} + + +int uv_fs_write(uv_loop_t* loop, + uv_fs_t* req, + uv_file file, + void* buf, + size_t len, + int64_t off, + uv_fs_cb cb) { + INIT(WRITE); + req->file = file; + req->buf = buf; + req->len = len; + req->off = off; + POST; +} - req->eio = eio_custom(uv__work, - EIO_PRI_DEFAULT, - uv__after_work, - req, - &loop->uv_eio_channel); - if (!req->eio) { - uv__set_sys_error(loop, ENOMEM); - return -1; - } +void uv_fs_req_cleanup(uv_fs_t* req) { + free((void*) req->path); + req->path = NULL; + req->new_path = NULL; - return 0; + if (req->ptr != &req->statbuf) + free(req->ptr); + req->ptr = NULL; } diff --git a/deps/uv/src/unix/fsevents.c b/deps/uv/src/unix/fsevents.c index 17dd11afa8..ac58d4f18e 100644 --- a/deps/uv/src/unix/fsevents.c +++ b/deps/uv/src/unix/fsevents.c @@ -66,14 +66,9 @@ void uv__fsevents_cb(uv_async_t* cb, int status) { handle = cb->data; UV__FSEVENTS_WALK(handle, { - if (handle->fd != -1) { -#ifdef MAC_OS_X_VERSION_10_7 - handle->cb(handle, event->path, event->events, 0); -#else - handle->cb(handle, NULL, event->events, 0); -#endif /* MAC_OS_X_VERSION_10_7 */ - } - }) + if (handle->fd != -1) + handle->cb(handle, event->path[0] ? event->path : NULL, event->events, 0); + }); if ((handle->flags & (UV_CLOSING | UV_CLOSED)) == 0 && handle->fd == -1) uv__fsevents_close(handle); @@ -94,6 +89,17 @@ void uv__fsevents_event_cb(ConstFSEventStreamRef streamRef, uv_fs_event_t* handle; uv__fsevents_event_t* event; ngx_queue_t add_list; + int kFSEventsModified; + int kFSEventsRenamed; + + kFSEventsModified = kFSEventStreamEventFlagItemFinderInfoMod | + kFSEventStreamEventFlagItemModified | + kFSEventStreamEventFlagItemInodeMetaMod | + kFSEventStreamEventFlagItemChangeOwner | + kFSEventStreamEventFlagItemXattrMod; + kFSEventsRenamed = kFSEventStreamEventFlagItemCreated | + kFSEventStreamEventFlagItemRemoved | + kFSEventStreamEventFlagItemRenamed; handle = info; paths = eventPaths; @@ -151,7 +157,8 @@ void uv__fsevents_event_cb(ConstFSEventStreamRef streamRef, memcpy(event->path, path, len + 1); - if (eventFlags[i] & kFSEventStreamEventFlagItemModified) + if ((eventFlags[i] & kFSEventsModified) != 0 && + (eventFlags[i] & kFSEventsRenamed) == 0) event->events = UV_CHANGE; else event->events = UV_RENAME; diff --git a/deps/uv/src/unix/getaddrinfo.c b/deps/uv/src/unix/getaddrinfo.c new file mode 100644 index 0000000000..d6bc698812 --- /dev/null +++ b/deps/uv/src/unix/getaddrinfo.c @@ -0,0 +1,144 @@ +/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include "uv.h" +#include "internal.h" + +#include <errno.h> +#include <stddef.h> /* NULL */ +#include <stdlib.h> +#include <string.h> + + +static void uv__getaddrinfo_work(struct uv__work* w) { + uv_getaddrinfo_t* req = container_of(w, uv_getaddrinfo_t, work_req); + + req->retcode = getaddrinfo(req->hostname, + req->service, + req->hints, + &req->res); +} + + +static void uv__getaddrinfo_done(struct uv__work* w) { + uv_getaddrinfo_t* req = container_of(w, uv_getaddrinfo_t, work_req); + struct addrinfo *res = req->res; +#if __sun + size_t hostlen = strlen(req->hostname); +#endif + + req->res = NULL; + + uv__req_unregister(req->loop, req); + + /* see initialization in uv_getaddrinfo() */ + if (req->hints) + free(req->hints); + else if (req->service) + free(req->service); + else if (req->hostname) + free(req->hostname); + else + assert(0); + + if (req->retcode == 0) { + /* OK */ +#if EAI_NODATA /* FreeBSD deprecated EAI_NODATA */ + } else if (req->retcode == EAI_NONAME || req->retcode == EAI_NODATA) { +#else + } else if (req->retcode == EAI_NONAME) { +#endif + uv__set_sys_error(req->loop, ENOENT); /* FIXME compatibility hack */ +#if __sun + } else if (req->retcode == EAI_MEMORY && hostlen >= MAXHOSTNAMELEN) { + uv__set_sys_error(req->loop, ENOENT); +#endif + } else { + req->loop->last_err.code = UV_EADDRINFO; + req->loop->last_err.sys_errno_ = req->retcode; + } + + req->cb(req, req->retcode, res); +} + + +int uv_getaddrinfo(uv_loop_t* loop, + uv_getaddrinfo_t* req, + uv_getaddrinfo_cb cb, + const char* hostname, + const char* service, + const struct addrinfo* hints) { + size_t hostname_len; + size_t service_len; + size_t hints_len; + size_t len; + char* buf; + + if (req == NULL || cb == NULL || (hostname == NULL && service == NULL)) + return uv__set_artificial_error(loop, UV_EINVAL); + + hostname_len = hostname ? strlen(hostname) + 1 : 0; + service_len = service ? strlen(service) + 1 : 0; + hints_len = hints ? sizeof(*hints) : 0; + buf = malloc(hostname_len + service_len + hints_len); + + if (buf == NULL) + return uv__set_artificial_error(loop, UV_ENOMEM); + + uv__req_init(loop, req, UV_GETADDRINFO); + req->loop = loop; + req->cb = cb; + req->res = NULL; + req->hints = NULL; + req->service = NULL; + req->hostname = NULL; + req->retcode = 0; + + /* order matters, see uv_getaddrinfo_done() */ + len = 0; + + if (hints) { + req->hints = memcpy(buf + len, hints, sizeof(*hints)); + len += sizeof(*hints); + } + + if (service) { + req->service = memcpy(buf + len, service, service_len); + len += service_len; + } + + if (hostname) { + req->hostname = memcpy(buf + len, hostname, hostname_len); + len += hostname_len; + } + + uv__work_submit(loop, + &req->work_req, + uv__getaddrinfo_work, + uv__getaddrinfo_done); + + return 0; +} + + +void uv_freeaddrinfo(struct addrinfo* ai) { + if (ai) + freeaddrinfo(ai); +} diff --git a/deps/uv/src/unix/internal.h b/deps/uv/src/unix/internal.h index 20dd23c718..5685e1a84d 100644 --- a/deps/uv/src/unix/internal.h +++ b/deps/uv/src/unix/internal.h @@ -23,7 +23,6 @@ #define UV_UNIX_INTERNAL_H_ #include "uv-common.h" -#include "uv-eio.h" #include <assert.h> #include <stdlib.h> /* abort */ @@ -101,11 +100,6 @@ enum { UV_TCP_SINGLE_ACCEPT = 0x400 /* Only accept() when idle. */ }; -/* loop flags */ -enum { - UV_LOOP_EIO_INITIALIZED = 1 -}; - __attribute__((unused)) __attribute__((always_inline)) static void uv__req_init(uv_loop_t* loop, uv_req_t* req, uv_req_type type) { @@ -165,6 +159,13 @@ unsigned int uv__next_timeout(uv_loop_t* loop); void uv__signal_close(uv_signal_t* handle); void uv__signal_unregister(uv_loop_t* loop); +/* thread pool */ +void uv__work_submit(uv_loop_t* loop, + struct uv__work *w, + void (*work)(struct uv__work *w), + void (*done)(struct uv__work *w)); +void uv__work_done(uv_async_t* handle, int status); + /* platform specific */ int uv__platform_loop_init(uv_loop_t* loop, int default_loop); void uv__platform_loop_delete(uv_loop_t* loop); diff --git a/deps/uv/src/unix/linux/linux-core.c b/deps/uv/src/unix/linux/linux-core.c index 167423f14c..a773b0794d 100644 --- a/deps/uv/src/unix/linux/linux-core.c +++ b/deps/uv/src/unix/linux/linux-core.c @@ -57,6 +57,7 @@ #endif static char buf[MAXPATHLEN + 1]; +static void* args_mem; static struct { char *str; @@ -69,6 +70,12 @@ static void read_times(unsigned int numcpus, uv_cpu_info_t* ci); static unsigned long read_cpufreq(unsigned int cpunum); +__attribute__((destructor)) +static void free_args_mem(void) { + free(args_mem); /* keep valgrind happy */ +} + + int uv__platform_loop_init(uv_loop_t* loop, int default_loop) { loop->inotify_watchers = NULL; loop->inotify_fd = -1; @@ -147,11 +154,12 @@ char** uv_setup_args(int argc, char** argv) { size += (argc + 1) * sizeof(char **); size += (envc + 1) * sizeof(char **); - if ((s = (char *) malloc(size)) == NULL) { + if (NULL == (s = malloc(size))) { process_title.str = NULL; process_title.len = 0; return argv; } + args_mem = s; new_argv = (char **) s; new_env = new_argv + argc + 1; diff --git a/deps/uv/src/unix/loop.c b/deps/uv/src/unix/loop.c index 5cd3bd0c81..7d41c005af 100644 --- a/deps/uv/src/unix/loop.c +++ b/deps/uv/src/unix/loop.c @@ -38,8 +38,8 @@ int uv__loop_init(uv_loop_t* loop, int default_loop) { #endif memset(loop, 0, sizeof(*loop)); - RB_INIT(&loop->timer_handles); + ngx_queue_init(&loop->wq); ngx_queue_init(&loop->active_reqs); ngx_queue_init(&loop->idle_handles); ngx_queue_init(&loop->async_handles); @@ -54,7 +54,6 @@ int uv__loop_init(uv_loop_t* loop, int default_loop) { loop->emfile_fd = -1; loop->ev = (default_loop ? ev_default_loop : ev_loop_new)(flags); ev_set_userdata(loop->ev, loop); - eio_channel_init(&loop->uv_eio_channel, loop); uv_signal_init(loop, &loop->child_watcher); uv__handle_unref(&loop->child_watcher); @@ -63,6 +62,15 @@ int uv__loop_init(uv_loop_t* loop, int default_loop) { for (i = 0; i < ARRAY_SIZE(loop->process_handles); i++) ngx_queue_init(loop->process_handles + i); + if (uv_mutex_init(&loop->wq_mutex)) + abort(); + + if (uv_async_init(loop, &loop->wq_async, uv__work_done)) + abort(); + + uv__handle_unref(&loop->wq_async); + loop->wq_async.flags |= UV__HANDLE_INTERNAL; + if (uv__platform_loop_init(loop, default_loop)) return -1; @@ -75,8 +83,23 @@ void uv__loop_delete(uv_loop_t* loop) { uv__signal_unregister(loop); ev_loop_destroy(loop->ev); + if (loop->async_pipefd[0] != -1) { + close(loop->async_pipefd[0]); + loop->async_pipefd[0] = -1; + } + + if (loop->async_pipefd[1] != -1) { + close(loop->async_pipefd[1]); + loop->async_pipefd[1] = -1; + } + if (loop->emfile_fd != -1) { close(loop->emfile_fd); loop->emfile_fd = -1; } + + uv_mutex_lock(&loop->wq_mutex); + assert(ngx_queue_empty(&loop->wq) && "thread pool work queue not empty!"); + uv_mutex_unlock(&loop->wq_mutex); + uv_mutex_destroy(&loop->wq_mutex); } diff --git a/deps/uv/src/unix/stream.c b/deps/uv/src/unix/stream.c index b00cfb5b86..7743ce5aa7 100644 --- a/deps/uv/src/unix/stream.c +++ b/deps/uv/src/unix/stream.c @@ -101,6 +101,8 @@ void uv__stream_init(uv_loop_t* loop, uv_stream_t* stream, uv_handle_type type) { uv__handle_init(loop, (uv_handle_t*)stream, type); + stream->read_cb = NULL; + stream->read2_cb = NULL; stream->alloc_cb = NULL; stream->close_cb = NULL; stream->connection_cb = NULL; diff --git a/deps/uv/src/unix/thread.c b/deps/uv/src/unix/thread.c index f85de1a4ab..f50961c921 100644 --- a/deps/uv/src/unix/thread.c +++ b/deps/uv/src/unix/thread.c @@ -26,6 +26,12 @@ #include <assert.h> #include <errno.h> +#if defined(__APPLE__) && defined(__MACH__) +#include <sys/time.h> +#endif /* defined(__APPLE__) && defined(__MACH__) */ + +#undef NANOSEC +#define NANOSEC ((uint64_t) 1e9) int uv_thread_join(uv_thread_t *tid) { if (pthread_join(*tid, NULL)) @@ -258,3 +264,109 @@ int uv_sem_trywait(uv_sem_t* sem) { } #endif /* defined(__APPLE__) && defined(__MACH__) */ + + +#if defined(__APPLE__) && defined(__MACH__) + +int uv_cond_init(uv_cond_t* cond) { + if (pthread_cond_init(cond, NULL)) + return -1; + else + return 0; +} + +#else /* !(defined(__APPLE__) && defined(__MACH__)) */ + +int uv_cond_init(uv_cond_t* cond) { + pthread_condattr_t attr; + + if (pthread_condattr_init(&attr)) + return -1; + + if (pthread_condattr_setclock(&attr, CLOCK_MONOTONIC)) + goto error2; + + if (pthread_cond_init(cond, &attr)) + goto error2; + + if (pthread_condattr_destroy(&attr)) + goto error; + + return 0; + +error: + pthread_cond_destroy(cond); +error2: + pthread_condattr_destroy(&attr); + return -1; +} + +#endif /* defined(__APPLE__) && defined(__MACH__) */ + +void uv_cond_destroy(uv_cond_t* cond) { + if (pthread_cond_destroy(cond)) + abort(); +} + +void uv_cond_signal(uv_cond_t* cond) { + if (pthread_cond_signal(cond)) + abort(); +} + +void uv_cond_broadcast(uv_cond_t* cond) { + if (pthread_cond_broadcast(cond)) + abort(); +} + +void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex) { + if (pthread_cond_wait(cond, mutex)) + abort(); +} + +#if defined(__APPLE__) && defined(__MACH__) + +int uv_cond_timedwait(uv_cond_t* cond, uv_mutex_t* mutex, uint64_t timeout) { + int r; + struct timeval tv; + struct timespec ts; + uint64_t abstime; + + gettimeofday(&tv, NULL); + abstime = tv.tv_sec * 1e9 + tv.tv_usec * 1e3 + timeout; + ts.tv_sec = abstime / NANOSEC; + ts.tv_nsec = abstime % NANOSEC; + r = pthread_cond_timedwait(cond, mutex, &ts); + + if (r == 0) + return 0; + + if (r == ETIMEDOUT) + return -1; + + abort(); + return -1; /* Satisfy the compiler. */ +} + +#else /* !(defined(__APPLE__) && defined(__MACH__)) */ + +int uv_cond_timedwait(uv_cond_t* cond, uv_mutex_t* mutex, uint64_t timeout) { + int r; + struct timespec ts; + uint64_t abstime; + + abstime = uv_hrtime() + timeout; + ts.tv_sec = abstime / NANOSEC; + ts.tv_nsec = abstime % NANOSEC; + r = pthread_cond_timedwait(cond, mutex, &ts); + + if (r == 0) + return 0; + + if (r == ETIMEDOUT) + return -1; + + abort(); + return -1; /* Satisfy the compiler. */ +} + +#endif /* defined(__APPLE__) && defined(__MACH__) */ diff --git a/deps/uv/src/unix/threadpool.c b/deps/uv/src/unix/threadpool.c new file mode 100644 index 0000000000..0a02766e65 --- /dev/null +++ b/deps/uv/src/unix/threadpool.c @@ -0,0 +1,176 @@ +/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include "internal.h" + +#include <errno.h> +#include <pthread.h> + +/* TODO add condvar support to libuv */ +static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; +static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; +static pthread_once_t once = PTHREAD_ONCE_INIT; +static pthread_t threads[4]; +static ngx_queue_t exit_message; +static ngx_queue_t wq = { &wq, &wq }; + + +static void* worker(void* arg) { + struct uv__work* w; + ngx_queue_t* q; + + (void) arg; + + for (;;) { + if (pthread_mutex_lock(&mutex)) + abort(); + + while (ngx_queue_empty(&wq)) + if (pthread_cond_wait(&cond, &mutex)) + abort(); + + q = ngx_queue_head(&wq); + + if (q == &exit_message) + pthread_cond_signal(&cond); + else + ngx_queue_remove(q); + + if (pthread_mutex_unlock(&mutex)) + abort(); + + if (q == &exit_message) + break; + + w = ngx_queue_data(q, struct uv__work, wq); + w->work(w); + + uv_mutex_lock(&w->loop->wq_mutex); + ngx_queue_insert_tail(&w->loop->wq, &w->wq); + uv_mutex_unlock(&w->loop->wq_mutex); + uv_async_send(&w->loop->wq_async); + } + + return NULL; +} + + +static void post(ngx_queue_t* q) { + pthread_mutex_lock(&mutex); + ngx_queue_insert_tail(&wq, q); + pthread_cond_signal(&cond); + pthread_mutex_unlock(&mutex); +} + + +static void init_once(void) { + unsigned int i; + + ngx_queue_init(&wq); + + for (i = 0; i < ARRAY_SIZE(threads); i++) + if (pthread_create(threads + i, NULL, worker, NULL)) + abort(); +} + + +__attribute__((destructor)) +static void cleanup(void) { + unsigned int i; + int err; + + post(&exit_message); + + for (i = 0; i < ARRAY_SIZE(threads); i++) { + err = pthread_join(threads[i], NULL); + assert(err == 0 || err == EINVAL || err == ESRCH); + (void) err; /* Silence compiler warning in release builds. */ + } +} + + +void uv__work_submit(uv_loop_t* loop, + struct uv__work* w, + void (*work)(struct uv__work* w), + void (*done)(struct uv__work* w)) { + pthread_once(&once, init_once); + w->loop = loop; + w->work = work; + w->done = done; + post(&w->wq); +} + + +void uv__work_done(uv_async_t* handle, int status) { + struct uv__work* w; + uv_loop_t* loop; + ngx_queue_t* q; + ngx_queue_t wq; + + loop = container_of(handle, uv_loop_t, wq_async); + ngx_queue_init(&wq); + + uv_mutex_lock(&loop->wq_mutex); + if (!ngx_queue_empty(&loop->wq)) { + q = ngx_queue_head(&loop->wq); + ngx_queue_split(&loop->wq, q, &wq); + } + uv_mutex_unlock(&loop->wq_mutex); + + while (!ngx_queue_empty(&wq)) { + q = ngx_queue_head(&wq); + ngx_queue_remove(q); + + w = container_of(q, struct uv__work, wq); + w->done(w); + } +} + + +static void uv__queue_work(struct uv__work* w) { + uv_work_t* req = container_of(w, uv_work_t, work_req); + + if (req->work_cb) + req->work_cb(req); +} + + +static void uv__queue_done(struct uv__work* w) { + uv_work_t* req = container_of(w, uv_work_t, work_req); + + uv__req_unregister(req->loop, req); + + if (req->after_work_cb) + req->after_work_cb(req); +} + + +int uv_queue_work(uv_loop_t* loop, + uv_work_t* req, + uv_work_cb work_cb, + uv_after_work_cb after_work_cb) { + uv__req_init(loop, req, UV_WORK); + req->loop = loop; + req->work_cb = work_cb; + req->after_work_cb = after_work_cb; + uv__work_submit(loop, &req->work_req, uv__queue_work, uv__queue_done); + return 0; +} diff --git a/deps/uv/src/unix/uv-eio.c b/deps/uv/src/unix/uv-eio.c deleted file mode 100644 index e5ba2f2715..0000000000 --- a/deps/uv/src/unix/uv-eio.c +++ /dev/null @@ -1,107 +0,0 @@ -/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -/* This file integrates the libuv event loop with the libeio thread pool */ - -#include "uv.h" -#include "eio.h" -#include "internal.h" - -#include <assert.h> -#include <stdio.h> - - -static uv_once_t uv__eio_init_once_guard = UV_ONCE_INIT; - - -static void uv_eio_do_poll(uv_idle_t* watcher, int status) { - uv_loop_t* loop = watcher->loop; - assert(watcher == &loop->uv_eio_poller); - if (eio_poll(&loop->uv_eio_channel) != -1) - uv_idle_stop(watcher); -} - - -/* Called from the main thread. */ -static void uv_eio_want_poll_notifier_cb(uv_async_t* watcher, int status) { - uv_loop_t* loop = watcher->loop; - assert(watcher == &loop->uv_eio_want_poll_notifier); - if (eio_poll(&loop->uv_eio_channel) == -1) - uv_idle_start(&loop->uv_eio_poller, uv_eio_do_poll); -} - - -static void uv_eio_done_poll_notifier_cb(uv_async_t* watcher, int revents) { - uv_loop_t* loop = watcher->loop; - assert(watcher == &loop->uv_eio_done_poll_notifier); - if (eio_poll(&loop->uv_eio_channel) != -1) - uv_idle_stop(&loop->uv_eio_poller); -} - - -/* - * uv_eio_want_poll() is called from the EIO thread pool each time an EIO - * request (that is, one of the node.fs.* functions) has completed. - */ -static void uv_eio_want_poll(eio_channel *channel) { - /* Signal the main thread that eio_poll need to be processed. */ - uv_loop_t* loop = channel->data; - uv_async_send(&loop->uv_eio_want_poll_notifier); -} - - -static void uv_eio_done_poll(eio_channel *channel) { - /* - * Signal the main thread that we should stop calling eio_poll(). - * from the idle watcher. - */ - uv_loop_t* loop = channel->data; - uv_async_send(&loop->uv_eio_done_poll_notifier); -} - - -static void uv__eio_init(void) { - eio_init(uv_eio_want_poll, uv_eio_done_poll); -} - - -void uv_eio_init(uv_loop_t* loop) { - if (loop->flags & UV_LOOP_EIO_INITIALIZED) return; - loop->flags |= UV_LOOP_EIO_INITIALIZED; - - uv_idle_init(loop, &loop->uv_eio_poller); - uv_idle_start(&loop->uv_eio_poller, uv_eio_do_poll); - loop->uv_eio_poller.flags |= UV__HANDLE_INTERNAL; - - loop->uv_eio_want_poll_notifier.data = loop; - uv_async_init(loop, - &loop->uv_eio_want_poll_notifier, - uv_eio_want_poll_notifier_cb); - loop->uv_eio_want_poll_notifier.flags |= UV__HANDLE_INTERNAL; - uv__handle_unref(&loop->uv_eio_want_poll_notifier); - - uv_async_init(loop, - &loop->uv_eio_done_poll_notifier, - uv_eio_done_poll_notifier_cb); - loop->uv_eio_done_poll_notifier.flags |= UV__HANDLE_INTERNAL; - uv__handle_unref(&loop->uv_eio_done_poll_notifier); - - uv_once(&uv__eio_init_once_guard, uv__eio_init); -} diff --git a/deps/uv/src/unix/uv-eio.h b/deps/uv/src/unix/uv-eio.h deleted file mode 100644 index 711d0cf281..0000000000 --- a/deps/uv/src/unix/uv-eio.h +++ /dev/null @@ -1,13 +0,0 @@ -/* This header is private to libuv */ -#ifndef UV_EIO_H_ -#define UV_EIO_H_ - -#include "eio.h" - -/* - * Call this function to integrate libeio into the libuv event loop. It is - * safe to call more than once. - * TODO: uv_eio_deinit - */ -void uv_eio_init(uv_loop_t*); -#endif diff --git a/deps/uv/src/win/thread.c b/deps/uv/src/win/thread.c index cb2ba4ec61..da6138ad7d 100644 --- a/deps/uv/src/win/thread.c +++ b/deps/uv/src/win/thread.c @@ -27,6 +27,7 @@ #define HAVE_SRWLOCK_API() (pTryAcquireSRWLockShared != NULL) +#define HAVE_CONDVAR_API() (pInitializeConditionVariable != NULL) #ifdef _MSC_VER /* msvc */ # define inline __inline @@ -56,6 +57,23 @@ inline static int uv__rwlock_fallback_trywrlock(uv_rwlock_t* rwlock); inline static void uv__rwlock_fallback_wrunlock(uv_rwlock_t* rwlock); +inline static int uv_cond_fallback_init(uv_cond_t* cond); +inline static void uv_cond_fallback_destroy(uv_cond_t* cond); +inline static void uv_cond_fallback_signal(uv_cond_t* cond); +inline static void uv_cond_fallback_broadcast(uv_cond_t* cond); +inline static void uv_cond_fallback_wait(uv_cond_t* cond, uv_mutex_t* mutex); +inline static int uv_cond_fallback_timedwait(uv_cond_t* cond, + uv_mutex_t* mutex, uint64_t timeout); + +inline static int uv_cond_condvar_init(uv_cond_t* cond); +inline static void uv_cond_condvar_destroy(uv_cond_t* cond); +inline static void uv_cond_condvar_signal(uv_cond_t* cond); +inline static void uv_cond_condvar_broadcast(uv_cond_t* cond); +inline static void uv_cond_condvar_wait(uv_cond_t* cond, uv_mutex_t* mutex); +inline static int uv_cond_condvar_timedwait(uv_cond_t* cond, + uv_mutex_t* mutex, uint64_t timeout); + + static NOINLINE void uv__once_inner(uv_once_t* guard, void (*callback)(void)) { DWORD result; @@ -81,7 +99,7 @@ static NOINLINE void uv__once_inner(uv_once_t* guard, } else { /* We lost the race. Destroy the event we created and wait for the */ - /* existing one to become signaled. */ + /* existing one todv become signaled. */ CloseHandle(created_event); result = WaitForSingleObject(existing_event, INFINITE); assert(result == WAIT_OBJECT_0); @@ -140,6 +158,8 @@ void uv_mutex_unlock(uv_mutex_t* mutex) { int uv_rwlock_init(uv_rwlock_t* rwlock) { + uv__once_init(); + if (HAVE_SRWLOCK_API()) return uv__rwlock_srwlock_init(rwlock); else @@ -365,3 +385,228 @@ inline static int uv__rwlock_fallback_trywrlock(uv_rwlock_t* rwlock) { inline static void uv__rwlock_fallback_wrunlock(uv_rwlock_t* rwlock) { uv_mutex_unlock(&rwlock->fallback_.write_mutex_); } + + + +/* This condition variable implementation is based on the SetEvent solution + * (section 3.2) at http://www.cs.wustl.edu/~schmidt/win32-cv-1.html + * We could not use the SignalObjectAndWait solution (section 3.4) because + * it want the 2nd argument (type uv_mutex_t) of uv_cond_wait() and + * uv_cond_timedwait() to be HANDLEs, but we use CRITICAL_SECTIONs. + */ + +inline static int uv_cond_fallback_init(uv_cond_t* cond) { + /* Initialize the count to 0. */ + cond->fallback.waiters_count = 0; + + InitializeCriticalSection(&cond->fallback.waiters_count_lock); + + /* Create an auto-reset event. */ + cond->fallback.signal_event = CreateEvent(NULL, /* no security */ + FALSE, /* auto-reset event */ + FALSE, /* non-signaled initially */ + NULL); /* unnamed */ + if (!cond->fallback.signal_event) + goto error2; + + /* Create a manual-reset event. */ + cond->fallback.broadcast_event = CreateEvent(NULL, /* no security */ + TRUE, /* manual-reset */ + FALSE, /* non-signaled */ + NULL); /* unnamed */ + if (!cond->fallback.broadcast_event) + goto error; + + return 0; + +error: + CloseHandle(cond->fallback.signal_event); +error2: + DeleteCriticalSection(&cond->fallback.waiters_count_lock); + return -1; +} + + +inline static int uv_cond_condvar_init(uv_cond_t* cond) { + pInitializeConditionVariable(&cond->cond_var); + return 0; +} + + +int uv_cond_init(uv_cond_t* cond) { + uv__once_init(); + + if (HAVE_CONDVAR_API()) + return uv_cond_condvar_init(cond); + else + return uv_cond_fallback_init(cond); +} + + +inline static void uv_cond_fallback_destroy(uv_cond_t* cond) { + if (!CloseHandle(cond->fallback.broadcast_event)) + abort(); + if (!CloseHandle(cond->fallback.signal_event)) + abort(); + DeleteCriticalSection(&cond->fallback.waiters_count_lock); +} + + +inline static void uv_cond_condvar_destroy(uv_cond_t* cond) { + /* nothing to do */ +} + + +void uv_cond_destroy(uv_cond_t* cond) { + if (HAVE_CONDVAR_API()) + uv_cond_condvar_destroy(cond); + else + uv_cond_fallback_destroy(cond); +} + + +inline static void uv_cond_fallback_signal(uv_cond_t* cond) { + int have_waiters; + + /* Avoid race conditions. */ + EnterCriticalSection(&cond->fallback.waiters_count_lock); + have_waiters = cond->fallback.waiters_count > 0; + LeaveCriticalSection(&cond->fallback.waiters_count_lock); + + if (have_waiters) + SetEvent(cond->fallback.signal_event); +} + + +inline static void uv_cond_condvar_signal(uv_cond_t* cond) { + pWakeConditionVariable(&cond->cond_var); +} + + +void uv_cond_signal(uv_cond_t* cond) { + if (HAVE_CONDVAR_API()) + uv_cond_condvar_signal(cond); + else + uv_cond_fallback_signal(cond); +} + + +inline static void uv_cond_fallback_broadcast(uv_cond_t* cond) { + int have_waiters; + + /* Avoid race conditions. */ + EnterCriticalSection(&cond->fallback.waiters_count_lock); + have_waiters = cond->fallback.waiters_count > 0; + LeaveCriticalSection(&cond->fallback.waiters_count_lock); + + if (have_waiters) + SetEvent(cond->fallback.broadcast_event); +} + + +inline static void uv_cond_condvar_broadcast(uv_cond_t* cond) { + pWakeAllConditionVariable(&cond->cond_var); +} + + +void uv_cond_broadcast(uv_cond_t* cond) { + if (HAVE_CONDVAR_API()) + uv_cond_condvar_broadcast(cond); + else + uv_cond_fallback_broadcast(cond); +} + + +inline int uv_cond_wait_helper(uv_cond_t* cond, uv_mutex_t* mutex, + DWORD dwMilliseconds) { + DWORD result; + int last_waiter; + HANDLE handles[2] = { + cond->fallback.signal_event, + cond->fallback.broadcast_event + }; + + /* Avoid race conditions. */ + EnterCriticalSection(&cond->fallback.waiters_count_lock); + cond->fallback.waiters_count++; + LeaveCriticalSection(&cond->fallback.waiters_count_lock); + + /* It's ok to release the <mutex> here since Win32 manual-reset events */ + /* maintain state when used with <SetEvent>. This avoids the "lost wakeup" */ + /* bug. */ + uv_mutex_unlock(mutex); + + /* Wait for either event to become signaled due to <uv_cond_signal> being */ + /* called or <uv_cond_broadcast> being called. */ + result = WaitForMultipleObjects(2, handles, FALSE, dwMilliseconds); + + EnterCriticalSection(&cond->fallback.waiters_count_lock); + cond->fallback.waiters_count--; + last_waiter = result == WAIT_OBJECT_0 + 1 + && cond->fallback.waiters_count == 0; + LeaveCriticalSection(&cond->fallback.waiters_count_lock); + + /* Some thread called <pthread_cond_broadcast>. */ + if (last_waiter) { + /* We're the last waiter to be notified or to stop waiting, so reset the */ + /* the manual-reset event. */ + ResetEvent(cond->fallback.broadcast_event); + } + + /* Reacquire the <mutex>. */ + uv_mutex_lock(mutex); + + if (result == WAIT_OBJECT_0 || result == WAIT_OBJECT_0 + 1) + return 0; + + if (result == WAIT_TIMEOUT) + return -1; + + abort(); + return -1; /* Satisfy the compiler. */ +} + + +inline static void uv_cond_fallback_wait(uv_cond_t* cond, uv_mutex_t* mutex) { + if (uv_cond_wait_helper(cond, mutex, INFINITE)) + abort(); +} + + +inline static void uv_cond_condvar_wait(uv_cond_t* cond, uv_mutex_t* mutex) { + if (!pSleepConditionVariableCS(&cond->cond_var, mutex, INFINITE)) + abort(); +} + + +void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex) { + if (HAVE_CONDVAR_API()) + uv_cond_condvar_wait(cond, mutex); + else + uv_cond_fallback_wait(cond, mutex); +} + + +inline static int uv_cond_fallback_timedwait(uv_cond_t* cond, + uv_mutex_t* mutex, uint64_t timeout) { + return uv_cond_wait_helper(cond, mutex, (DWORD)(timeout / 1e6)); +} + + +inline static int uv_cond_condvar_timedwait(uv_cond_t* cond, + uv_mutex_t* mutex, uint64_t timeout) { + if (pSleepConditionVariableCS(&cond->cond_var, mutex, (DWORD)(timeout / 1e6))) + return 0; + if (GetLastError() != ERROR_TIMEOUT) + abort(); + return -1; +} + + +int uv_cond_timedwait(uv_cond_t* cond, uv_mutex_t* mutex, + uint64_t timeout) { + if (HAVE_CONDVAR_API()) + return uv_cond_condvar_timedwait(cond, mutex, timeout); + else + return uv_cond_fallback_timedwait(cond, mutex, timeout); +} diff --git a/deps/uv/src/win/winapi.c b/deps/uv/src/win/winapi.c index ab5513ab6f..ab68bba742 100644 --- a/deps/uv/src/win/winapi.c +++ b/deps/uv/src/win/winapi.c @@ -45,6 +45,11 @@ sTryAcquireSRWLockShared pTryAcquireSRWLockShared; sTryAcquireSRWLockExclusive pTryAcquireSRWLockExclusive; sReleaseSRWLockShared pReleaseSRWLockShared; sReleaseSRWLockExclusive pReleaseSRWLockExclusive; +sInitializeConditionVariable pInitializeConditionVariable; +sSleepConditionVariableCS pSleepConditionVariableCS; +sSleepConditionVariableSRW pSleepConditionVariableSRW; +sWakeAllConditionVariable pWakeAllConditionVariable; +sWakeConditionVariable pWakeConditionVariable; void uv_winapi_init() { @@ -129,4 +134,19 @@ void uv_winapi_init() { pReleaseSRWLockExclusive = (sReleaseSRWLockExclusive) GetProcAddress(kernel32_module, "ReleaseSRWLockExclusive"); + + pInitializeConditionVariable = (sInitializeConditionVariable) + GetProcAddress(kernel32_module, "InitializeConditionVariable"); + + pSleepConditionVariableCS = (sSleepConditionVariableCS) + GetProcAddress(kernel32_module, "SleepConditionVariableCS"); + + pSleepConditionVariableSRW = (sSleepConditionVariableSRW) + GetProcAddress(kernel32_module, "SleepConditionVariableSRW"); + + pWakeAllConditionVariable = (sWakeAllConditionVariable) + GetProcAddress(kernel32_module, "WakeAllConditionVariable"); + + pWakeConditionVariable = (sWakeConditionVariable) + GetProcAddress(kernel32_module, "WakeConditionVariable"); } diff --git a/deps/uv/src/win/winapi.h b/deps/uv/src/win/winapi.h index 1bf6304b5e..e023beed5d 100644 --- a/deps/uv/src/win/winapi.h +++ b/deps/uv/src/win/winapi.h @@ -4426,6 +4426,25 @@ typedef VOID (WINAPI* sReleaseSRWLockShared) typedef VOID (WINAPI* sReleaseSRWLockExclusive) (PSRWLOCK SRWLock); +typedef VOID (WINAPI* sInitializeConditionVariable) + (PCONDITION_VARIABLE ConditionVariable); + +typedef BOOL (WINAPI* sSleepConditionVariableCS) + (PCONDITION_VARIABLE ConditionVariable, + PCRITICAL_SECTION CriticalSection, + DWORD dwMilliseconds); + +typedef BOOL (WINAPI* sSleepConditionVariableSRW) + (PCONDITION_VARIABLE ConditionVariable, + PSRWLOCK SRWLock, + DWORD dwMilliseconds, + ULONG Flags); + +typedef VOID (WINAPI* sWakeAllConditionVariable) + (PCONDITION_VARIABLE ConditionVariable); + +typedef VOID (WINAPI* sWakeConditionVariable) + (PCONDITION_VARIABLE ConditionVariable); /* Ntdll function pointers */ @@ -4448,5 +4467,10 @@ extern sTryAcquireSRWLockShared pTryAcquireSRWLockShared; extern sTryAcquireSRWLockExclusive pTryAcquireSRWLockExclusive; extern sReleaseSRWLockShared pReleaseSRWLockShared; extern sReleaseSRWLockExclusive pReleaseSRWLockExclusive; +extern sInitializeConditionVariable pInitializeConditionVariable; +extern sSleepConditionVariableCS pSleepConditionVariableCS; +extern sSleepConditionVariableSRW pSleepConditionVariableSRW; +extern sWakeAllConditionVariable pWakeAllConditionVariable; +extern sWakeConditionVariable pWakeConditionVariable; #endif /* UV_WIN_WINAPI_H_ */ diff --git a/deps/uv/test/benchmark-multi-accept.c b/deps/uv/test/benchmark-multi-accept.c index ce3f353d24..3b2c16c3aa 100644 --- a/deps/uv/test/benchmark-multi-accept.c +++ b/deps/uv/test/benchmark-multi-accept.c @@ -415,7 +415,6 @@ static int test_tcp(unsigned int num_servers, unsigned int num_clients) { free(clients); free(servers); - uv_loop_delete(uv_default_loop()); /* Silence valgrind. */ return 0; } diff --git a/deps/uv/test/runner-unix.c b/deps/uv/test/runner-unix.c index 668dc95e6f..1a54a1adb9 100644 --- a/deps/uv/test/runner-unix.c +++ b/deps/uv/test/runner-unix.c @@ -55,8 +55,13 @@ void platform_init(int argc, char **argv) { /* Invoke "argv[0] test-name [test-part]". Store process info in *p. */ /* Make sure that all stdio output of the processes is buffered up. */ -int process_start(char* name, char* part, process_info_t* p) { - FILE* stdout_file = tmpfile(); +int process_start(char* name, char* part, process_info_t* p, int is_helper) { + FILE* stdout_file; + const char* arg; + char* args[16]; + int n; + + stdout_file = tmpfile(); if (!stdout_file) { perror("tmpfile"); return -1; @@ -68,17 +73,34 @@ int process_start(char* name, char* part, process_info_t* p) { pid_t pid = fork(); if (pid < 0) { - perror("vfork"); + perror("fork"); return -1; } if (pid == 0) { /* child */ + arg = getenv("UV_USE_VALGRIND"); + n = 0; + + /* Disable valgrind for helpers, it complains about helpers leaking memory. + * They're killed after the test and as such never get a chance to clean up. + */ + if (is_helper == 0 && arg != NULL && atoi(arg) != 0) { + args[n++] = "valgrind"; + args[n++] = "--quiet"; + args[n++] = "--leak-check=full"; + args[n++] = "--show-reachable=yes"; + args[n++] = "--error-exitcode=125"; + } + + args[n++] = executable_path; + args[n++] = name; + args[n++] = part; + args[n++] = NULL; + dup2(fileno(stdout_file), STDOUT_FILENO); dup2(fileno(stdout_file), STDERR_FILENO); - - char* args[] = { executable_path, name, part, NULL }; - execvp(executable_path, args); + execvp(args[0], args); perror("execvp()"); _exit(127); } diff --git a/deps/uv/test/runner-win.c b/deps/uv/test/runner-win.c index 2f44ff33a9..cf75c703d5 100644 --- a/deps/uv/test/runner-win.c +++ b/deps/uv/test/runner-win.c @@ -24,7 +24,6 @@ #include <malloc.h> #include <stdio.h> #include <process.h> -#include <windows.h> #include "task.h" #include "runner.h" @@ -57,7 +56,7 @@ void platform_init(int argc, char **argv) { } -int process_start(char *name, char *part, process_info_t *p) { +int process_start(char *name, char *part, process_info_t *p, int is_helper) { HANDLE file = INVALID_HANDLE_VALUE; HANDLE nul = INVALID_HANDLE_VALUE; WCHAR path[MAX_PATH], filename[MAX_PATH]; diff --git a/deps/uv/test/runner-win.h b/deps/uv/test/runner-win.h index f69976e987..c94b89bd5e 100644 --- a/deps/uv/test/runner-win.h +++ b/deps/uv/test/runner-win.h @@ -26,6 +26,7 @@ #pragma warning(disable : 4996) +#include <winsock2.h> #include <windows.h> #include <stdio.h> diff --git a/deps/uv/test/runner.c b/deps/uv/test/runner.c index b34acc8430..d7098123b0 100644 --- a/deps/uv/test/runner.c +++ b/deps/uv/test/runner.c @@ -24,6 +24,7 @@ #include "runner.h" #include "task.h" +#include "uv.h" char executable_path[PATHMAX] = { '\0' }; @@ -147,7 +148,8 @@ int run_test(const char* test, int timeout, int benchmark_output) { if (process_start(task->task_name, task->process_name, - &processes[process_count]) == -1) { + &processes[process_count], + 1 /* is_helper */) == -1) { snprintf(errmsg, sizeof errmsg, "Process `%s` failed to start.", @@ -173,7 +175,8 @@ int run_test(const char* test, int timeout, int benchmark_output) { if (process_start(task->task_name, task->process_name, - &processes[process_count]) == -1) { + &processes[process_count], + 0 /* !is_helper */) == -1) { snprintf(errmsg, sizeof errmsg, "Process `%s` failed to start.", @@ -291,11 +294,14 @@ out: */ int run_test_part(const char* test, const char* part) { task_entry_t* task; + int r; for (task = TASKS; task->main; task++) { - if (strcmp(test, task->task_name) == 0 - && strcmp(part, task->process_name) == 0) { - return task->main(); + if (strcmp(test, task->task_name) == 0 && + strcmp(part, task->process_name) == 0) { + r = task->main(); + uv_loop_delete(uv_default_loop()); + return r; } } diff --git a/deps/uv/test/runner.h b/deps/uv/test/runner.h index 5cee695ed2..0358d7e255 100644 --- a/deps/uv/test/runner.h +++ b/deps/uv/test/runner.h @@ -127,7 +127,7 @@ void platform_init(); /* Invoke "argv[0] test-name [test-part]". Store process info in *p. */ /* Make sure that all stdio output of the processes is buffered up. */ -int process_start(char *name, char* part, process_info_t *p); +int process_start(char *name, char* part, process_info_t *p, int is_helper); /* Wait for all `n` processes in `vec` to terminate. */ /* Time out after `timeout` msec, or never if timeout == -1 */ diff --git a/deps/uv/test/test-async.c b/deps/uv/test/test-async.c index 7cdad0983a..9b2ce7bcf1 100644 --- a/deps/uv/test/test-async.c +++ b/deps/uv/test/test-async.c @@ -114,5 +114,7 @@ TEST_IMPL(async) { ASSERT(async_cb_called == 3); ASSERT(close_cb_called == 2); + ASSERT(0 == uv_thread_join(&thread)); + return 0; } diff --git a/deps/uv/test/test-condvar.c b/deps/uv/test/test-condvar.c new file mode 100644 index 0000000000..065dd4ec6c --- /dev/null +++ b/deps/uv/test/test-condvar.c @@ -0,0 +1,173 @@ +/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#include "uv.h" +#include "task.h" + +#include <string.h> +#include <errno.h> + +typedef struct { + uv_mutex_t mutex; + uv_cond_t cond; + int delay; + int use_broadcast; + volatile int posted; +} worker_config; + + +static void worker(void* arg) { + worker_config* c = arg; + + if (c->delay) + uv_sleep(c->delay); + + uv_mutex_lock(&c->mutex); + ASSERT(c->posted == 0); + c->posted = 1; + if (c->use_broadcast) + uv_cond_broadcast(&c->cond); + else + uv_cond_signal(&c->cond); + uv_mutex_unlock(&c->mutex); +} + + +TEST_IMPL(condvar_1) { + uv_thread_t thread; + worker_config wc; + + memset(&wc, 0, sizeof(wc)); + + ASSERT(0 == uv_cond_init(&wc.cond)); + ASSERT(0 == uv_mutex_init(&wc.mutex)); + ASSERT(0 == uv_thread_create(&thread, worker, &wc)); + + uv_mutex_lock(&wc.mutex); + uv_sleep(100); + uv_cond_wait(&wc.cond, &wc.mutex); + ASSERT(wc.posted == 1); + uv_mutex_unlock(&wc.mutex); + + ASSERT(0 == uv_thread_join(&thread)); + uv_mutex_destroy(&wc.mutex); + uv_cond_destroy(&wc.cond); + + return 0; +} + + +TEST_IMPL(condvar_2) { + uv_thread_t thread; + worker_config wc; + + memset(&wc, 0, sizeof(wc)); + wc.delay = 100; + + ASSERT(0 == uv_cond_init(&wc.cond)); + ASSERT(0 == uv_mutex_init(&wc.mutex)); + ASSERT(0 == uv_thread_create(&thread, worker, &wc)); + + uv_mutex_lock(&wc.mutex); + uv_cond_wait(&wc.cond, &wc.mutex); + uv_mutex_unlock(&wc.mutex); + + ASSERT(0 == uv_thread_join(&thread)); + uv_mutex_destroy(&wc.mutex); + uv_cond_destroy(&wc.cond); + + return 0; +} + + +TEST_IMPL(condvar_3) { + uv_thread_t thread; + worker_config wc; + int r; + + memset(&wc, 0, sizeof(wc)); + wc.delay = 100; + + ASSERT(0 == uv_cond_init(&wc.cond)); + ASSERT(0 == uv_mutex_init(&wc.mutex)); + ASSERT(0 == uv_thread_create(&thread, worker, &wc)); + + uv_mutex_lock(&wc.mutex); + r = uv_cond_timedwait(&wc.cond, &wc.mutex, (uint64_t)(50 * 1e6)); + ASSERT(r == -1); + uv_mutex_unlock(&wc.mutex); + + ASSERT(0 == uv_thread_join(&thread)); + uv_mutex_destroy(&wc.mutex); + uv_cond_destroy(&wc.cond); + + return 0; +} + + +TEST_IMPL(condvar_4) { + uv_thread_t thread; + worker_config wc; + int r; + + memset(&wc, 0, sizeof(wc)); + wc.delay = 100; + + ASSERT(0 == uv_cond_init(&wc.cond)); + ASSERT(0 == uv_mutex_init(&wc.mutex)); + ASSERT(0 == uv_thread_create(&thread, worker, &wc)); + + uv_mutex_lock(&wc.mutex); + r = uv_cond_timedwait(&wc.cond, &wc.mutex, (uint64_t)(150 * 1e6)); + ASSERT(r == 0); + uv_mutex_unlock(&wc.mutex); + + ASSERT(0 == uv_thread_join(&thread)); + uv_mutex_destroy(&wc.mutex); + uv_cond_destroy(&wc.cond); + + return 0; +} + + +TEST_IMPL(condvar_5) { + uv_thread_t thread; + worker_config wc; + + memset(&wc, 0, sizeof(wc)); + wc.use_broadcast = 1; + + ASSERT(0 == uv_cond_init(&wc.cond)); + ASSERT(0 == uv_mutex_init(&wc.mutex)); + ASSERT(0 == uv_thread_create(&thread, worker, &wc)); + + uv_mutex_lock(&wc.mutex); + uv_sleep(100); + uv_cond_wait(&wc.cond, &wc.mutex); + ASSERT(wc.posted == 1); + uv_mutex_unlock(&wc.mutex); + + ASSERT(0 == uv_thread_join(&thread)); + uv_mutex_destroy(&wc.mutex); + uv_cond_destroy(&wc.cond); + + return 0; +} diff --git a/deps/uv/test/test-fs-event.c b/deps/uv/test/test-fs-event.c index 4d4cfbc31b..dd10915fb8 100644 --- a/deps/uv/test/test-fs-event.c +++ b/deps/uv/test/test-fs-event.c @@ -174,14 +174,13 @@ static void timer_cb_watch_twice(uv_timer_t* handle, int status) { } TEST_IMPL(fs_event_watch_dir) { - uv_fs_t fs_req; uv_loop_t* loop = uv_default_loop(); int r; /* Setup */ - uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - uv_fs_unlink(loop, &fs_req, "watch_dir/file2", NULL); - uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); + remove("watch_dir/file2"); + remove("watch_dir/file1"); + remove("watch_dir/"); create_dir(loop, "watch_dir"); r = uv_fs_event_init(loop, &fs_event, "watch_dir", fs_event_cb_dir, 0); @@ -198,22 +197,21 @@ TEST_IMPL(fs_event_watch_dir) { ASSERT(close_cb_called == 2); /* Cleanup */ - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file2", NULL); - r = uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); + remove("watch_dir/file2"); + remove("watch_dir/file1"); + remove("watch_dir/"); return 0; } TEST_IMPL(fs_event_watch_file) { - uv_fs_t fs_req; uv_loop_t* loop = uv_default_loop(); int r; /* Setup */ - uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - uv_fs_unlink(loop, &fs_req, "watch_dir/file2", NULL); - uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); + remove("watch_dir/file2"); + remove("watch_dir/file1"); + remove("watch_dir/"); create_dir(loop, "watch_dir"); create_file(loop, "watch_dir/file1"); create_file(loop, "watch_dir/file2"); @@ -232,9 +230,9 @@ TEST_IMPL(fs_event_watch_file) { ASSERT(close_cb_called == 2); /* Cleanup */ - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file2", NULL); - r = uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); + remove("watch_dir/file2"); + remove("watch_dir/file1"); + remove("watch_dir/"); return 0; } @@ -260,13 +258,12 @@ TEST_IMPL(fs_event_watch_file_twice) { TEST_IMPL(fs_event_watch_file_current_dir) { uv_timer_t timer; uv_loop_t* loop; - uv_fs_t fs_req; int r; loop = uv_default_loop(); /* Setup */ - uv_fs_unlink(loop, &fs_req, "watch_file", NULL); + remove("watch_file"); create_file(loop, "watch_file"); r = uv_fs_event_init(loop, &fs_event, "watch_file", @@ -290,19 +287,19 @@ TEST_IMPL(fs_event_watch_file_current_dir) { ASSERT(close_cb_called == 1); /* Cleanup */ - r = uv_fs_unlink(loop, &fs_req, "watch_file", NULL); + remove("watch_file"); + return 0; } TEST_IMPL(fs_event_no_callback_on_close) { - uv_fs_t fs_req; uv_loop_t* loop = uv_default_loop(); int r; /* Setup */ - uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); + remove("watch_dir/file1"); + remove("watch_dir/"); create_dir(loop, "watch_dir"); create_file(loop, "watch_dir/file1"); @@ -321,8 +318,8 @@ TEST_IMPL(fs_event_no_callback_on_close) { ASSERT(close_cb_called == 1); /* Cleanup */ - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - r = uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); + remove("watch_dir/file1"); + remove("watch_dir/"); return 0; } @@ -370,7 +367,6 @@ TEST_IMPL(fs_event_immediate_close) { TEST_IMPL(fs_event_close_with_pending_event) { uv_loop_t* loop; - uv_fs_t fs_req; int r; loop = uv_default_loop(); @@ -391,10 +387,8 @@ TEST_IMPL(fs_event_close_with_pending_event) { ASSERT(close_cb_called == 1); /* Clean up */ - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file", NULL); - ASSERT(r == 0); - r = uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); - ASSERT(r == 0); + remove("watch_dir/file"); + remove("watch_dir/"); return 0; } @@ -427,7 +421,6 @@ static void fs_event_cb_close(uv_fs_event_t* handle, const char* filename, TEST_IMPL(fs_event_close_in_callback) { uv_loop_t* loop; - uv_fs_t fs_req; int r; loop = uv_default_loop(); @@ -455,18 +448,12 @@ TEST_IMPL(fs_event_close_in_callback) { ASSERT(fs_event_cb_called == 3); /* Clean up */ - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file1", NULL); - ASSERT(r == 0); - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file2", NULL); - ASSERT(r == 0); - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file3", NULL); - ASSERT(r == 0); - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file4", NULL); - ASSERT(r == 0); - r = uv_fs_unlink(loop, &fs_req, "watch_dir/file5", NULL); - ASSERT(r == 0); - r = uv_fs_rmdir(loop, &fs_req, "watch_dir", NULL); - ASSERT(r == 0); + remove("watch_dir/file1"); + remove("watch_dir/file2"); + remove("watch_dir/file3"); + remove("watch_dir/file4"); + remove("watch_dir/file5"); + remove("watch_dir/"); return 0; } diff --git a/deps/uv/test/test-fs-poll.c b/deps/uv/test/test-fs-poll.c index 00a73b6c99..4380b561ef 100644 --- a/deps/uv/test/test-fs-poll.c +++ b/deps/uv/test/test-fs-poll.c @@ -140,7 +140,6 @@ TEST_IMPL(fs_poll) { ASSERT(poll_cb_called == 5); ASSERT(timer_cb_called == 2); ASSERT(close_cb_called == 1); - uv_loop_delete(loop); return 0; } diff --git a/deps/uv/test/test-fs.c b/deps/uv/test/test-fs.c index 76ced14a94..e59e5ed11d 100644 --- a/deps/uv/test/test-fs.c +++ b/deps/uv/test/test-fs.c @@ -53,6 +53,7 @@ typedef struct { } utime_check_t; +static int dummy_cb_count; static int close_cb_count; static int create_cb_count; static int open_cb_count; @@ -127,6 +128,12 @@ void check_permission(const char* filename, int mode) { } +static void dummy_cb(uv_fs_t* req) { + (void) req; + dummy_cb_count++; +} + + static void link_cb(uv_fs_t* req) { ASSERT(req->fs_type == UV_FS_LINK); ASSERT(req->result == 0); @@ -787,7 +794,7 @@ TEST_IMPL(fs_async_dir) { ASSERT(r == 0); uv_run(loop); - r = uv_fs_stat(loop, &stat_req, "test_dir\\", stat_cb); + r = uv_fs_stat(loop, &stat_req, "test_dir/", stat_cb); ASSERT(r == 0); uv_run(loop); @@ -795,7 +802,7 @@ TEST_IMPL(fs_async_dir) { ASSERT(r == 0); uv_run(loop); - r = uv_fs_lstat(loop, &stat_req, "test_dir\\", stat_cb); + r = uv_fs_lstat(loop, &stat_req, "test_dir/", stat_cb); ASSERT(r == 0); uv_run(loop); @@ -1183,6 +1190,28 @@ TEST_IMPL(fs_link) { } +TEST_IMPL(fs_readlink) { + uv_fs_t req; + + loop = uv_default_loop(); + ASSERT(0 == uv_fs_readlink(loop, &req, "no_such_file", dummy_cb)); + ASSERT(0 == uv_run(loop)); + ASSERT(dummy_cb_count == 1); + ASSERT(req.ptr == NULL); + ASSERT(req.result == -1); + ASSERT(req.errorno == UV_ENOENT); + uv_fs_req_cleanup(&req); + + ASSERT(-1 == uv_fs_readlink(loop, &req, "no_such_file", NULL)); + ASSERT(req.ptr == NULL); + ASSERT(req.result == -1); + ASSERT(req.errorno == UV_ENOENT); + uv_fs_req_cleanup(&req); + + return 0; +} + + TEST_IMPL(fs_symlink) { int r; uv_fs_t req; @@ -1251,6 +1280,8 @@ TEST_IMPL(fs_symlink) { r = uv_fs_symlink(loop, &req, "test_file_symlink", "test_file_symlink_symlink", 0, NULL); ASSERT(r != -1); + uv_fs_req_cleanup(&req); + r = uv_fs_readlink(loop, &req, "test_file_symlink_symlink", NULL); ASSERT(r != -1); ASSERT(strcmp(req.ptr, "test_file_symlink") == 0); @@ -1278,6 +1309,8 @@ TEST_IMPL(fs_symlink) { r = uv_fs_symlink(loop, &req, "test_file_symlink2", "test_file_symlink2_symlink", 0, NULL); ASSERT(r != -1); + uv_fs_req_cleanup(&req); + r = uv_fs_readlink(loop, &req, "test_file_symlink2_symlink", readlink_cb); ASSERT(r != -1); uv_run(loop); @@ -1608,6 +1641,7 @@ TEST_IMPL(fs_readdir_file) { r = uv_fs_readdir(loop, &readdir_req, path, 0, NULL); ASSERT(r == -1); ASSERT(uv_last_error(loop).code == UV_ENOTDIR); + uv_fs_req_cleanup(&readdir_req); r = uv_fs_readdir(loop, &readdir_req, path, 0, file_readdir_cb); ASSERT(r == 0); diff --git a/deps/uv/test/test-getsockname.c b/deps/uv/test/test-getsockname.c index ff28beb922..2bfb71ad56 100644 --- a/deps/uv/test/test-getsockname.c +++ b/deps/uv/test/test-getsockname.c @@ -238,9 +238,9 @@ static void udp_recv(uv_udp_t* handle, int r; ASSERT(nread >= 0); + free(buf.base); if (nread == 0) { - free(buf.base); return; } diff --git a/deps/uv/test/test-list.h b/deps/uv/test/test-list.h index ce70c1f915..893be1a5f3 100644 --- a/deps/uv/test/test-list.h +++ b/deps/uv/test/test-list.h @@ -22,6 +22,11 @@ TEST_DECLARE (platform_output) TEST_DECLARE (callback_order) TEST_DECLARE (run_once) +TEST_DECLARE (condvar_1) +TEST_DECLARE (condvar_2) +TEST_DECLARE (condvar_3) +TEST_DECLARE (condvar_4) +TEST_DECLARE (condvar_5) TEST_DECLARE (semaphore_1) TEST_DECLARE (semaphore_2) TEST_DECLARE (semaphore_3) @@ -152,6 +157,7 @@ TEST_DECLARE (fs_fstat) TEST_DECLARE (fs_chmod) TEST_DECLARE (fs_chown) TEST_DECLARE (fs_link) +TEST_DECLARE (fs_readlink) TEST_DECLARE (fs_symlink) TEST_DECLARE (fs_symlink_dir) TEST_DECLARE (fs_utime) @@ -207,6 +213,11 @@ TASK_LIST_START TEST_ENTRY (callback_order) #endif TEST_ENTRY (run_once) + TEST_ENTRY (condvar_1) + TEST_ENTRY (condvar_2) + TEST_ENTRY (condvar_3) + TEST_ENTRY (condvar_4) + TEST_ENTRY (condvar_5) TEST_ENTRY (semaphore_1) TEST_ENTRY (semaphore_2) TEST_ENTRY (semaphore_3) @@ -405,6 +416,7 @@ TASK_LIST_START TEST_ENTRY (fs_chown) TEST_ENTRY (fs_utime) TEST_ENTRY (fs_futime) + TEST_ENTRY (fs_readlink) TEST_ENTRY (fs_symlink) TEST_ENTRY (fs_symlink_dir) TEST_ENTRY (fs_stat_missing_path) diff --git a/deps/uv/test/test-ping-pong.c b/deps/uv/test/test-ping-pong.c index 1bdcc3bc24..92e40e550d 100644 --- a/deps/uv/test/test-ping-pong.c +++ b/deps/uv/test/test-ping-pong.c @@ -52,10 +52,7 @@ void pinger_try_read(pinger_t* pinger); static uv_buf_t alloc_cb(uv_handle_t* handle, size_t size) { - uv_buf_t buf; - buf.base = (char*)malloc(size); - buf.len = size; - return buf; + return uv_buf_init(malloc(size), size); } @@ -103,10 +100,7 @@ static void pinger_read_cb(uv_stream_t* stream, ssize_t nread, uv_buf_t buf) { ASSERT(uv_last_error(uv_default_loop()).code == UV_EOF); puts("got EOF"); - - if (buf.base) { - free(buf.base); - } + free(buf.base); uv_close((uv_handle_t*)(&pinger->stream.tcp), pinger_on_close); @@ -117,17 +111,22 @@ static void pinger_read_cb(uv_stream_t* stream, ssize_t nread, uv_buf_t buf) { for (i = 0; i < nread; i++) { ASSERT(buf.base[i] == PING[pinger->state]); pinger->state = (pinger->state + 1) % (sizeof(PING) - 1); - if (pinger->state == 0) { - printf("PONG %d\n", pinger->pongs); - pinger->pongs++; - if (pinger->pongs < NUM_PINGS) { - pinger_write_ping(pinger); - } else { - uv_close((uv_handle_t*)(&pinger->stream.tcp), pinger_on_close); - return; - } + + if (pinger->state != 0) + continue; + + printf("PONG %d\n", pinger->pongs); + pinger->pongs++; + + if (pinger->pongs < NUM_PINGS) { + pinger_write_ping(pinger); + } else { + uv_close((uv_handle_t*)(&pinger->stream.tcp), pinger_on_close); + break; } } + + free(buf.base); } diff --git a/deps/uv/test/test-ref.c b/deps/uv/test/test-ref.c index e0c38858ec..95e92a86c4 100644 --- a/deps/uv/test/test-ref.c +++ b/deps/uv/test/test-ref.c @@ -36,6 +36,21 @@ static int req_cb_called; static int connect_cb_called; static int write_cb_called; static int shutdown_cb_called; +static int close_cb_called; + + +static void close_cb(uv_handle_t* handle) { + close_cb_called++; +} + + +static void do_close(void* handle) { + close_cb_called = 0; + uv_close((uv_handle_t*)handle, close_cb); + ASSERT(close_cb_called == 0); + uv_run(uv_default_loop()); + ASSERT(close_cb_called == 1); +} static void fail_cb(void) { @@ -91,6 +106,7 @@ TEST_IMPL(idle_ref) { uv_idle_start(&h, NULL); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -100,6 +116,7 @@ TEST_IMPL(async_ref) { uv_async_init(uv_default_loop(), &h, NULL); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -110,6 +127,7 @@ TEST_IMPL(prepare_ref) { uv_prepare_start(&h, NULL); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -120,6 +138,7 @@ TEST_IMPL(check_ref) { uv_check_start(&h, NULL); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -136,6 +155,7 @@ TEST_IMPL(unref_in_prepare_cb) { uv_prepare_init(uv_default_loop(), &h); uv_prepare_start(&h, prepare_cb); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -145,6 +165,7 @@ TEST_IMPL(timer_ref) { uv_timer_init(uv_default_loop(), &h); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -155,6 +176,7 @@ TEST_IMPL(timer_ref2) { uv_timer_start(&h, (uv_timer_cb)fail_cb, 42, 42); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -164,6 +186,7 @@ TEST_IMPL(fs_event_ref) { uv_fs_event_init(uv_default_loop(), &h, ".", (uv_fs_event_cb)fail_cb, 0); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -174,6 +197,7 @@ TEST_IMPL(fs_poll_ref) { uv_fs_poll_start(&h, NULL, ".", 999); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -183,6 +207,7 @@ TEST_IMPL(tcp_ref) { uv_tcp_init(uv_default_loop(), &h); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -193,6 +218,7 @@ TEST_IMPL(tcp_ref2) { uv_listen((uv_stream_t*)&h, 128, (uv_connection_cb)fail_cb); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -206,6 +232,7 @@ TEST_IMPL(tcp_ref3) { uv_run(uv_default_loop()); ASSERT(connect_cb_called == 1); ASSERT(shutdown_cb_called == 1); + do_close(&h); return 0; } @@ -220,6 +247,7 @@ TEST_IMPL(tcp_ref4) { ASSERT(connect_cb_called == 1); ASSERT(write_cb_called == 1); ASSERT(shutdown_cb_called == 1); + do_close(&h); return 0; } @@ -229,6 +257,7 @@ TEST_IMPL(udp_ref) { uv_udp_init(uv_default_loop(), &h); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -241,6 +270,7 @@ TEST_IMPL(udp_ref2) { uv_udp_recv_start(&h, (uv_alloc_cb)fail_cb, (uv_udp_recv_cb)fail_cb); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -256,6 +286,7 @@ TEST_IMPL(udp_ref3) { uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); ASSERT(req_cb_called == 1); + do_close(&h); return 0; } @@ -266,6 +297,7 @@ TEST_IMPL(pipe_ref) { uv_pipe_init(uv_default_loop(), &h, 0); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -276,6 +308,7 @@ TEST_IMPL(pipe_ref2) { uv_listen((uv_stream_t*)&h, 128, (uv_connection_cb)fail_cb); uv_unref((uv_handle_t*)&h); uv_run(uv_default_loop()); + do_close(&h); return 0; } @@ -288,6 +321,7 @@ TEST_IMPL(pipe_ref3) { uv_run(uv_default_loop()); ASSERT(connect_cb_called == 1); ASSERT(shutdown_cb_called == 1); + do_close(&h); return 0; } @@ -301,6 +335,7 @@ TEST_IMPL(pipe_ref4) { ASSERT(connect_cb_called == 1); ASSERT(write_cb_called == 1); ASSERT(shutdown_cb_called == 1); + do_close(&h); return 0; } @@ -334,5 +369,7 @@ TEST_IMPL(process_ref) { r = uv_process_kill(&h, /* SIGTERM */ 15); ASSERT(r == 0); + do_close(&h); + return 0; } diff --git a/deps/uv/test/test-tcp-writealot.c b/deps/uv/test/test-tcp-writealot.c index 841df3c0d9..16d141ad32 100644 --- a/deps/uv/test/test-tcp-writealot.c +++ b/deps/uv/test/test-tcp-writealot.c @@ -145,7 +145,7 @@ TEST_IMPL(tcp_writealot) { uv_tcp_t client; int r; - send_buffer = malloc(TOTAL_BYTES); + send_buffer = calloc(1, TOTAL_BYTES); ASSERT(send_buffer != NULL); r = uv_tcp_init(uv_default_loop(), &client); diff --git a/deps/uv/uv.gyp b/deps/uv/uv.gyp index a7993e1d69..622b234646 100644 --- a/deps/uv/uv.gyp +++ b/deps/uv/uv.gyp @@ -6,7 +6,6 @@ '_LARGEFILE_SOURCE', '_FILE_OFFSET_BITS=64', '_GNU_SOURCE', - 'EIO_STACKSIZE=262144' ], 'conditions': [ ['OS=="solaris"', { @@ -53,7 +52,6 @@ [ 'OS=="win"', { 'defines': [ '_WIN32_WINNT=0x0600', - 'EIO_STACKSIZE=262144', '_GNU_SOURCE', ], 'sources': [ @@ -108,7 +106,6 @@ '-Wno-unused-parameter' ], 'sources': [ - 'include/uv-private/eio.h', 'include/uv-private/ev.h', 'include/uv-private/uv-unix.h', 'include/uv-private/uv-linux.h', @@ -118,15 +115,13 @@ 'src/unix/async.c', 'src/unix/core.c', 'src/unix/dl.c', - 'src/unix/eio/ecb.h', - 'src/unix/eio/eio.c', - 'src/unix/eio/xthread.h', 'src/unix/error.c', 'src/unix/ev/ev.c', 'src/unix/ev/ev_vars.h', 'src/unix/ev/ev_wrap.h', 'src/unix/ev/event.h', 'src/unix/fs.c', + 'src/unix/getaddrinfo.c', 'src/unix/internal.h', 'src/unix/loop.c', 'src/unix/loop-watcher.c', @@ -137,11 +132,10 @@ 'src/unix/stream.c', 'src/unix/tcp.c', 'src/unix/thread.c', + 'src/unix/threadpool.c', 'src/unix/timer.c', 'src/unix/tty.c', 'src/unix/udp.c', - 'src/unix/uv-eio.c', - 'src/unix/uv-eio.h', ], 'include_dirs': [ 'src/unix/ev', ], 'libraries': [ '-lm' ] @@ -156,7 +150,6 @@ 'defines': [ '_DARWIN_USE_64_BIT_INODE=1', 'EV_CONFIG_H="config_darwin.h"', - 'EIO_CONFIG_H="config_darwin.h"', ] }], [ 'OS=="linux"', { @@ -168,7 +161,6 @@ ], 'defines': [ 'EV_CONFIG_H="config_linux.h"', - 'EIO_CONFIG_H="config_linux.h"', ], 'direct_dependent_settings': { 'libraries': [ '-lrt' ], @@ -180,13 +172,13 @@ '__EXTENSIONS__', '_XOPEN_SOURCE=500', 'EV_CONFIG_H="config_sunos.h"', - 'EIO_CONFIG_H="config_sunos.h"', ], 'direct_dependent_settings': { 'libraries': [ '-lkstat', - '-lsocket', '-lnsl', + '-lsendfile', + '-lsocket', ], }, }], @@ -197,7 +189,6 @@ '_ALL_SOURCE', '_XOPEN_SOURCE=500', 'EV_CONFIG_H="config_aix.h"', - 'EIO_CONFIG_H="config_aix.h"', ], 'direct_dependent_settings': { 'libraries': [ @@ -209,7 +200,6 @@ 'sources': [ 'src/unix/freebsd.c' ], 'defines': [ 'EV_CONFIG_H="config_freebsd.h"', - 'EIO_CONFIG_H="config_freebsd.h"', ], 'direct_dependent_settings': { 'libraries': [ @@ -221,14 +211,12 @@ 'sources': [ 'src/unix/openbsd.c' ], 'defines': [ 'EV_CONFIG_H="config_openbsd.h"', - 'EIO_CONFIG_H="config_openbsd.h"', ], }], [ 'OS=="netbsd"', { 'sources': [ 'src/unix/netbsd.c' ], 'defines': [ 'EV_CONFIG_H="config_netbsd.h"', - 'EIO_CONFIG_H="config_netbsd.h"', ], 'direct_dependent_settings': { 'libraries': [ @@ -239,6 +227,9 @@ [ 'OS=="mac" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', { 'sources': [ 'src/unix/kqueue.c' ], }], + ['library=="shared_library"', { + 'defines': [ 'BUILDING_UV_SHARED=1' ] + }] ] }, @@ -314,6 +305,7 @@ 'test/test-mutexes.c', 'test/test-signal.c', 'test/test-thread.c', + 'test/test-condvar.c', 'test/test-timer-again.c', 'test/test-timer.c', 'test/test-tty.c', diff --git a/deps/uv/vcbuild.bat b/deps/uv/vcbuild.bat index 644f574c22..12e5480aea 100644 --- a/deps/uv/vcbuild.bat +++ b/deps/uv/vcbuild.bat @@ -17,6 +17,10 @@ set target=Build set noprojgen= set nobuild= set run= +set target_arch=ia32 +set vs_toolset=x86 +set platform=WIN32 +set library=static_library :next-arg if "%1"=="" goto args-done @@ -27,11 +31,36 @@ if /i "%1"=="bench" set run=run-benchmarks.exe&goto arg-ok if /i "%1"=="clean" set target=Clean&goto arg-ok if /i "%1"=="noprojgen" set noprojgen=1&goto arg-ok if /i "%1"=="nobuild" set nobuild=1&goto arg-ok +if /i "%1"=="x86" set target_arch=ia32&set platform=WIN32&set vs_toolset=x86&goto arg-ok +if /i "%1"=="ia32" set target_arch=ia32&set platform=WIN32&set vs_toolset=x86&goto arg-ok +if /i "%1"=="x64" set target_arch=x64&set platform=amd64&set vs_toolset=x64&goto arg-ok +if /i "%1"=="shared" set library=shared_library&goto arg-ok +if /i "%1"=="static" set library=static_library&goto arg-ok :arg-ok shift goto next-arg :args-done +@rem Look for Visual Studio 2010 +if not defined VS100COMNTOOLS goto vc-set-2008 +if not exist "%VS100COMNTOOLS%\..\..\vc\vcvarsall.bat" goto vc-set-2008 +call "%VS100COMNTOOLS%\..\..\vc\vcvarsall.bat" %vs_toolset% +set GYP_MSVS_VERSION=2010 +goto select-target + +:vc-set-2008 +@rem Look for Visual Studio 2008 +if not defined VS90COMNTOOLS goto vc-set-notfound +if not exist "%VS90COMNTOOLS%\..\..\vc\vcvarsall.bat" goto vc-set-notfound +call "%VS90COMNTOOLS%\..\..\vc\vcvarsall.bat" %vs_toolset% +echo Warning: building with Visual Studio 2008 is currently not supported. +set GYP_MSVS_VERSION=2008 +goto select-target + +:vc-set-notfound +echo Warning: Visual Studio not found + +:select-target if not "%config%"=="" goto project-gen if "%run%"=="run-tests.exe" set config=Debug& goto project-gen if "%run%"=="run-benchmarks.exe" set config=Release& goto project-gen @@ -42,7 +71,6 @@ set config=Debug if defined noprojgen goto msbuild @rem Generate the VS project. - if exist build\gyp goto have_gyp echo svn co http://gyp.googlecode.com/svn/trunk@983 build/gyp svn co http://gyp.googlecode.com/svn/trunk@983 build/gyp @@ -50,12 +78,12 @@ if errorlevel 1 goto gyp_install_failed goto have_gyp :gyp_install_failed -echo Failed to download gyp. Make sure you have subversion installed, or +echo Failed to download gyp. Make sure you have subversion installed, or echo manually install gyp into %~dp0build\gyp. goto exit :have_gyp -python gyp_uv +python gyp_uv -Dtarget_arch=%target_arch% -Dlibrary=%library% if errorlevel 1 goto create-msvs-files-failed if not exist uv.sln goto create-msvs-files-failed echo Project files generated. @@ -64,12 +92,7 @@ echo Project files generated. @rem Skip project generation if requested. if defined nobuild goto run -@rem If not running in the VS build env, try to start it. If that fails, bail -@rem out. -if defined VCINSTALLDIR goto msbuild-found -if not defined VS100COMNTOOLS goto msbuild-not-found -if not exist "%VS100COMNTOOLS%\..\..\vc\vcvarsall.bat" goto msbuild-not-found -call "%VS100COMNTOOLS%\..\..\vc\vcvarsall.bat" +@rem Check if VS build env is available if not defined VCINSTALLDIR goto msbuild-not-found goto msbuild-found @@ -79,7 +102,7 @@ goto run @rem Build the sln with msbuild. :msbuild-found -msbuild uv.sln /t:%target% /p:Configuration=%config% /clp:NoSummary;NoItemAndPropertyList;Verbosity=minimal /nologo +msbuild uv.sln /t:%target% /p:Configuration=%config% /p:Platform="%platform%" /clp:NoSummary;NoItemAndPropertyList;Verbosity=minimal /nologo if errorlevel 1 goto exit :run @@ -91,11 +114,11 @@ echo running '%config%\%run%' goto exit :create-msvs-files-failed -echo Failed to create vc project files. +echo Failed to create vc project files. goto exit :help -echo vcbuild.bat [debug/release] [test/bench] [clean] [noprojgen] [nobuild] +echo vcbuild.bat [debug/release] [test/bench] [clean] [noprojgen] [nobuild] [x86/x64] [static/shared] echo Examples: echo vcbuild.bat : builds debug build echo vcbuild.bat test : builds debug build and runs tests |