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Diffstat (limited to 'server/mpm/prefork/scoreboard.h')
| -rw-r--r-- | server/mpm/prefork/scoreboard.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/server/mpm/prefork/scoreboard.h b/server/mpm/prefork/scoreboard.h deleted file mode 100644 index a8f88e3f39..0000000000 --- a/server/mpm/prefork/scoreboard.h +++ /dev/null @@ -1,206 +0,0 @@ -/* ==================================================================== - * Copyright (c) 1995-1999 The Apache Group. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, 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. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the Apache Group - * for use in the Apache HTTP server project (http://www.apache.org/)." - * - * 4. The names "Apache Server" and "Apache Group" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache" - * nor may "Apache" appear in their names without prior written - * permission of the Apache Group. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the Apache Group - * for use in the Apache HTTP server project (http://www.apache.org/)." - * - * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY - * EXPRESSED 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 APACHE GROUP OR - * ITS 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. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Group and was originally based - * on public domain software written at the National Center for - * Supercomputing Applications, University of Illinois, Urbana-Champaign. - * For more information on the Apache Group and the Apache HTTP server - * project, please see <http://www.apache.org/>. - * - */ - -#ifndef APACHE_SCOREBOARD_H -#define APACHE_SCOREBOARD_H - -#ifdef __cplusplus -extern "C" { -#endif - -#ifndef WIN32 -#ifdef TPF -#include <time.h> -#else -#include <sys/times.h> -#endif /* TPF */ -#endif - -/* Scoreboard info on a process is, for now, kept very brief --- - * just status value and pid (the latter so that the caretaker process - * can properly update the scoreboard when a process dies). We may want - * to eventually add a separate set of long_score structures which would - * give, for each process, the number of requests serviced, and info on - * the current, or most recent, request. - * - * Status values: - */ - -#define SERVER_DEAD 0 -#define SERVER_STARTING 1 /* Server Starting up */ -#define SERVER_READY 2 /* Waiting for connection (or accept() lock) */ -#define SERVER_BUSY_READ 3 /* Reading a client request */ -#define SERVER_BUSY_WRITE 4 /* Processing a client request */ -#define SERVER_BUSY_KEEPALIVE 5 /* Waiting for more requests via keepalive */ -#define SERVER_BUSY_LOG 6 /* Logging the request */ -#define SERVER_BUSY_DNS 7 /* Looking up a hostname */ -#define SERVER_GRACEFUL 8 /* server is gracefully finishing request */ -#define SERVER_NUM_STATUS 9 /* number of status settings */ - -/* A "virtual time" is simply a counter that indicates that a child is - * making progress. The parent checks up on each child, and when they have - * made progress it resets the last_rtime element. But when the child hasn't - * made progress in a time that's roughly timeout_len seconds long, it is - * sent a SIGALRM. - * - * vtime is an optimization that is used only when the scoreboard is in - * shared memory (it's not easy/feasible to do it in a scoreboard file). - * The essential observation is that timeouts rarely occur, the vast majority - * of hits finish before any timeout happens. So it really sucks to have to - * ask the operating system to set up and destroy alarms many times during - * a request. - */ -typedef unsigned vtime_t; - -/* Type used for generation indicies. Startup and every restart cause a - * new generation of children to be spawned. Children within the same - * generation share the same configuration information -- pointers to stuff - * created at config time in the parent are valid across children. For - * example, the vhostrec pointer in the scoreboard below is valid in all - * children of the same generation. - * - * The safe way to access the vhost pointer is like this: - * - * short_score *ss = pointer to whichver slot is interesting; - * parent_score *ps = pointer to whichver slot is interesting; - * server_rec *vh = ss->vhostrec; - * - * if (ps->generation != ap_my_generation) { - * vh = NULL; - * } - * - * then if vh is not NULL it's valid in this child. - * - * This avoids various race conditions around restarts. - */ -typedef int ap_generation_t; - -/* stuff which the children generally write, and the parent mainly reads */ -typedef struct { -#ifdef OPTIMIZE_TIMEOUTS - vtime_t cur_vtime; /* the child's current vtime */ - unsigned short timeout_len; /* length of the timeout */ -#endif - unsigned char status; - unsigned long access_count; - unsigned long bytes_served; - unsigned long my_access_count; - unsigned long my_bytes_served; - unsigned long conn_bytes; - unsigned short conn_count; -#if defined(NO_GETTIMEOFDAY) - clock_t start_time; - clock_t stop_time; -#else - struct timeval start_time; - struct timeval stop_time; -#endif -#ifndef NO_TIMES - struct tms times; -#endif -#ifndef OPTIMIZE_TIMEOUTS - time_t last_used; -#endif - char client[32]; /* Keep 'em small... */ - char request[64]; /* We just want an idea... */ - server_rec *vhostrec; /* What virtual host is being accessed? */ - /* SEE ABOVE FOR SAFE USAGE! */ -} short_score; - -typedef struct { - ap_generation_t running_generation; /* the generation of children which - * should still be serving requests. */ -} global_score; - -/* stuff which the parent generally writes and the children rarely read */ -typedef struct { - pid_t pid; -#ifdef OPTIMIZE_TIMEOUTS - time_t last_rtime; /* time(0) of the last change */ - vtime_t last_vtime; /* the last vtime the parent has seen */ -#endif - ap_generation_t generation; /* generation of this child */ -} parent_score; - -typedef struct { - short_score servers[HARD_SERVER_LIMIT]; - parent_score parent[HARD_SERVER_LIMIT]; - global_score global; -} scoreboard; - -#define SCOREBOARD_SIZE sizeof(scoreboard) -#ifdef TPF -#define SCOREBOARD_NAME "SCOREBRD" -#define SCOREBOARD_FRAMES SCOREBOARD_SIZE/4095 + 1 -#endif - -API_EXPORT(void) ap_sync_scoreboard_image(void); -API_EXPORT(int) ap_exists_scoreboard_image(void); - -API_VAR_EXPORT extern scoreboard *ap_scoreboard_image; - -API_VAR_EXPORT extern ap_generation_t volatile ap_my_generation; - -/* for time_process_request() in http_main.c */ -#define START_PREQUEST 1 -#define STOP_PREQUEST 2 - -#ifdef __cplusplus -} -#endif - -#endif /* !APACHE_SCOREBOARD_H */ |