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|
/* XSUB.h
*
* Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999,
* 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
#ifndef _INC_PERL_XSUB_H
#define _INC_PERL_XSUB_H 1
/* first, some documentation for xsubpp-generated items */
/*
=head1 Variables created by C<xsubpp> and C<xsubpp> internal functions
=for apidoc Amn|char*|CLASS
Variable which is setup by C<xsubpp> to indicate the
class name for a C++ XS constructor. This is always a C<char*>. See C<THIS>.
=for apidoc Amn|(whatever)|RETVAL
Variable which is setup by C<xsubpp> to hold the return value for an
XSUB. This is always the proper type for the XSUB. See
L<perlxs/"The RETVAL Variable">.
=for apidoc Amn|(whatever)|THIS
Variable which is setup by C<xsubpp> to designate the object in a C++
XSUB. This is always the proper type for the C++ object. See C<CLASS> and
L<perlxs/"Using XS With C++">.
=for apidoc Amn|I32|ax
Variable which is setup by C<xsubpp> to indicate the stack base offset,
used by the C<ST>, C<XSprePUSH> and C<XSRETURN> macros. The C<dMARK> macro
must be called prior to setup the C<MARK> variable.
=for apidoc Amn|I32|items
Variable which is setup by C<xsubpp> to indicate the number of
items on the stack. See L<perlxs/"Variable-length Parameter Lists">.
=for apidoc Amn|I32|ix
Variable which is setup by C<xsubpp> to indicate which of an
XSUB's aliases was used to invoke it. See L<perlxs/"The ALIAS: Keyword">.
=for apidoc Am|SV*|ST|int ix
Used to access elements on the XSUB's stack.
=for apidoc AmU||XS
Macro to declare an XSUB and its C parameter list. This is handled by
C<xsubpp>.
=for apidoc Ams||dAX
Sets up the C<ax> variable.
This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
=for apidoc Ams||dAXMARK
Sets up the C<ax> variable and stack marker variable C<mark>.
This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
=for apidoc Ams||dITEMS
Sets up the C<items> variable.
This is usually handled automatically by C<xsubpp> by calling C<dXSARGS>.
=for apidoc Ams||dXSARGS
Sets up stack and mark pointers for an XSUB, calling dSP and dMARK.
Sets up the C<ax> and C<items> variables by calling C<dAX> and C<dITEMS>.
This is usually handled automatically by C<xsubpp>.
=for apidoc Ams||dXSI32
Sets up the C<ix> variable for an XSUB which has aliases. This is usually
handled automatically by C<xsubpp>.
=for apidoc Ams||dUNDERBAR
Sets up the C<padoff_du> variable for an XSUB that wishes to use
C<UNDERBAR>.
=for apidoc AmU||UNDERBAR
The SV* corresponding to the $_ variable. Works even if there
is a lexical $_ in scope.
=cut
*/
#ifndef PERL_UNUSED_ARG
# if defined(lint) && defined(S_SPLINT_S) /* www.splint.org */
# include <note.h>
# define PERL_UNUSED_ARG(x) NOTE(ARGUNUSED(x))
# else
# define PERL_UNUSED_ARG(x) ((void)x)
# endif
#endif
#ifndef PERL_UNUSED_VAR
# define PERL_UNUSED_VAR(x) ((void)x)
#endif
#define ST(off) PL_stack_base[ax + (off)]
#undef XS
#if defined(__CYGWIN__) && defined(USE_DYNAMIC_LOADING)
# define XS(name) __declspec(dllexport) void name(pTHX_ CV* cv)
#endif
#if defined(__SYMBIAN32__)
# define XS(name) EXPORT_C void name(pTHX_ CV* cv)
#endif
#ifndef XS
# if defined(HASATTRIBUTE_UNUSED) && !defined(__cplusplus)
# define XS(name) void name(pTHX_ CV* cv __attribute__unused__)
# else
# ifdef __cplusplus
# define XS(name) extern "C" void name(pTHX_ CV* cv)
# else
# define XS(name) void name(pTHX_ CV* cv)
# endif
# endif
#endif
#define dAX const I32 ax = MARK - PL_stack_base + 1
#define dAXMARK \
I32 ax = POPMARK; \
register SV **mark = PL_stack_base + ax++
#define dITEMS I32 items = SP - MARK
#if defined(lint) && defined(S_SPLINT_S) /* www.splint.org */
# define dXSARGS \
NOTE(ARGUNUSED(cv)) \
dSP; dAXMARK; dITEMS
#else
# define dXSARGS \
dSP; dAXMARK; dITEMS
#endif
#define dXSTARG SV * const targ = ((PL_op->op_private & OPpENTERSUB_HASTARG) \
? PAD_SV(PL_op->op_targ) : sv_newmortal())
/* Should be used before final PUSHi etc. if not in PPCODE section. */
#define XSprePUSH (sp = PL_stack_base + ax - 1)
#define XSANY CvXSUBANY(cv)
#define dXSI32 I32 ix = XSANY.any_i32
#ifdef __cplusplus
# define XSINTERFACE_CVT(ret,name) ret (*name)(...)
#else
# define XSINTERFACE_CVT(ret,name) ret (*name)()
#endif
#define dXSFUNCTION(ret) XSINTERFACE_CVT(ret,XSFUNCTION)
#define XSINTERFACE_FUNC(ret,cv,f) ((XSINTERFACE_CVT(ret,))(f))
#define XSINTERFACE_FUNC_SET(cv,f) \
CvXSUBANY(cv).any_dxptr = (void (*) (pTHX_ void*))(f)
#define dUNDERBAR PADOFFSET padoff_du = find_rundefsvoffset()
#define UNDERBAR ((padoff_du == NOT_IN_PAD \
|| PAD_COMPNAME_FLAGS_isOUR(padoff_du)) \
? DEFSV : PAD_SVl(padoff_du))
/* Simple macros to put new mortal values onto the stack. */
/* Typically used to return values from XS functions. */
/*
=head1 Stack Manipulation Macros
=for apidoc Am|void|XST_mIV|int pos|IV iv
Place an integer into the specified position C<pos> on the stack. The
value is stored in a new mortal SV.
=for apidoc Am|void|XST_mNV|int pos|NV nv
Place a double into the specified position C<pos> on the stack. The value
is stored in a new mortal SV.
=for apidoc Am|void|XST_mPV|int pos|char* str
Place a copy of a string into the specified position C<pos> on the stack.
The value is stored in a new mortal SV.
=for apidoc Am|void|XST_mNO|int pos
Place C<&PL_sv_no> into the specified position C<pos> on the
stack.
=for apidoc Am|void|XST_mYES|int pos
Place C<&PL_sv_yes> into the specified position C<pos> on the
stack.
=for apidoc Am|void|XST_mUNDEF|int pos
Place C<&PL_sv_undef> into the specified position C<pos> on the
stack.
=for apidoc Am|void|XSRETURN|int nitems
Return from XSUB, indicating number of items on the stack. This is usually
handled by C<xsubpp>.
=for apidoc Am|void|XSRETURN_IV|IV iv
Return an integer from an XSUB immediately. Uses C<XST_mIV>.
=for apidoc Am|void|XSRETURN_UV|IV uv
Return an integer from an XSUB immediately. Uses C<XST_mUV>.
=for apidoc Am|void|XSRETURN_NV|NV nv
Return a double from an XSUB immediately. Uses C<XST_mNV>.
=for apidoc Am|void|XSRETURN_PV|char* str
Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>.
=for apidoc Ams||XSRETURN_NO
Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>.
=for apidoc Ams||XSRETURN_YES
Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>.
=for apidoc Ams||XSRETURN_UNDEF
Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>.
=for apidoc Ams||XSRETURN_EMPTY
Return an empty list from an XSUB immediately.
=head1 Variables created by C<xsubpp> and C<xsubpp> internal functions
=for apidoc AmU||newXSproto|char* name|XSUBADDR_t f|char* filename|const char *proto
Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to
the subs.
=for apidoc AmU||XS_VERSION
The version identifier for an XS module. This is usually
handled automatically by C<ExtUtils::MakeMaker>. See C<XS_VERSION_BOOTCHECK>.
=for apidoc Ams||XS_VERSION_BOOTCHECK
Macro to verify that a PM module's $VERSION variable matches the XS
module's C<XS_VERSION> variable. This is usually handled automatically by
C<xsubpp>. See L<perlxs/"The VERSIONCHECK: Keyword">.
=head1 Simple Exception Handling Macros
=for apidoc Ams||dXCPT
Set up necessary local variables for exception handling.
See L<perlguts/"Exception Handling">.
=for apidoc AmU||XCPT_TRY_START
Starts a try block. See L<perlguts/"Exception Handling">.
=for apidoc AmU||XCPT_TRY_END
Ends a try block. See L<perlguts/"Exception Handling">.
=for apidoc AmU||XCPT_CATCH
Introduces a catch block. See L<perlguts/"Exception Handling">.
=for apidoc Ams||XCPT_RETHROW
Rethrows a previously caught exception. See L<perlguts/"Exception Handling">.
=cut
*/
#define XST_mIV(i,v) (ST(i) = sv_2mortal(newSViv(v)) )
#define XST_mUV(i,v) (ST(i) = sv_2mortal(newSVuv(v)) )
#define XST_mNV(i,v) (ST(i) = sv_2mortal(newSVnv(v)) )
#define XST_mPV(i,v) (ST(i) = sv_2mortal(newSVpv(v,0)))
#define XST_mPVN(i,v,n) (ST(i) = sv_2mortal(newSVpvn(v,n)))
#define XST_mNO(i) (ST(i) = &PL_sv_no )
#define XST_mYES(i) (ST(i) = &PL_sv_yes )
#define XST_mUNDEF(i) (ST(i) = &PL_sv_undef)
#define XSRETURN(off) \
STMT_START { \
IV tmpXSoff = (off); \
PL_stack_sp = PL_stack_base + ax + (tmpXSoff - 1); \
return; \
} STMT_END
#define XSRETURN_IV(v) STMT_START { XST_mIV(0,v); XSRETURN(1); } STMT_END
#define XSRETURN_UV(v) STMT_START { XST_mUV(0,v); XSRETURN(1); } STMT_END
#define XSRETURN_NV(v) STMT_START { XST_mNV(0,v); XSRETURN(1); } STMT_END
#define XSRETURN_PV(v) STMT_START { XST_mPV(0,v); XSRETURN(1); } STMT_END
#define XSRETURN_PVN(v,n) STMT_START { XST_mPVN(0,v,n); XSRETURN(1); } STMT_END
#define XSRETURN_NO STMT_START { XST_mNO(0); XSRETURN(1); } STMT_END
#define XSRETURN_YES STMT_START { XST_mYES(0); XSRETURN(1); } STMT_END
#define XSRETURN_UNDEF STMT_START { XST_mUNDEF(0); XSRETURN(1); } STMT_END
#define XSRETURN_EMPTY STMT_START { XSRETURN(0); } STMT_END
#define newXSproto(a,b,c,d) newXS_flags(a,b,c,d,0)
#ifdef XS_VERSION
# define XS_VERSION_BOOTCHECK \
STMT_START { \
SV *_sv; \
const char *vn = NULL, *module = SvPV_nolen_const(ST(0)); \
if (items >= 2) /* version supplied as bootstrap arg */ \
_sv = ST(1); \
else { \
/* XXX GV_ADDWARN */ \
_sv = get_sv(Perl_form(aTHX_ "%s::%s", module, \
vn = "XS_VERSION"), FALSE); \
if (!_sv || !SvOK(_sv)) \
_sv = get_sv(Perl_form(aTHX_ "%s::%s", module, \
vn = "VERSION"), FALSE); \
} \
if (_sv) { \
SV *xssv = Perl_newSVpv(aTHX_ XS_VERSION, 0); \
xssv = new_version(xssv); \
if ( !sv_derived_from(_sv, "version") ) \
_sv = new_version(_sv); \
if ( vcmp(_sv,xssv) ) \
Perl_croak(aTHX_ "%s object version %"SVf" does not match %s%s%s%s %"SVf,\
module, SVfARG(vstringify(xssv)), \
vn ? "$" : "", vn ? module : "", vn ? "::" : "", \
vn ? vn : "bootstrap parameter", SVfARG(vstringify(_sv)));\
} \
} STMT_END
#else
# define XS_VERSION_BOOTCHECK
#endif
#ifdef NO_XSLOCKS
# define dXCPT dJMPENV; int rEtV = 0
# define XCPT_TRY_START JMPENV_PUSH(rEtV); if (rEtV == 0)
# define XCPT_TRY_END JMPENV_POP;
# define XCPT_CATCH if (rEtV != 0)
# define XCPT_RETHROW JMPENV_JUMP(rEtV)
#endif
/*
The DBM_setFilter & DBM_ckFilter macros are only used by
the *DB*_File modules
*/
#define DBM_setFilter(db_type,code) \
STMT_START { \
if (db_type) \
RETVAL = sv_mortalcopy(db_type) ; \
ST(0) = RETVAL ; \
if (db_type && (code == &PL_sv_undef)) { \
SvREFCNT_dec(db_type) ; \
db_type = NULL ; \
} \
else if (code) { \
if (db_type) \
sv_setsv(db_type, code) ; \
else \
db_type = newSVsv(code) ; \
} \
} STMT_END
#define DBM_ckFilter(arg,type,name) \
STMT_START { \
if (db->type) { \
if (db->filtering) { \
croak("recursion detected in %s", name) ; \
} \
ENTER ; \
SAVETMPS ; \
SAVEINT(db->filtering) ; \
db->filtering = TRUE ; \
SAVESPTR(DEFSV) ; \
if (name[7] == 's') \
arg = newSVsv(arg); \
DEFSV = arg ; \
SvTEMP_off(arg) ; \
PUSHMARK(SP) ; \
PUTBACK ; \
(void) perl_call_sv(db->type, G_DISCARD); \
SPAGAIN ; \
PUTBACK ; \
FREETMPS ; \
LEAVE ; \
if (name[7] == 's'){ \
arg = sv_2mortal(arg); \
} \
} } STMT_END
#if 1 /* for compatibility */
# define VTBL_sv &PL_vtbl_sv
# define VTBL_env &PL_vtbl_env
# define VTBL_envelem &PL_vtbl_envelem
# define VTBL_sig &PL_vtbl_sig
# define VTBL_sigelem &PL_vtbl_sigelem
# define VTBL_pack &PL_vtbl_pack
# define VTBL_packelem &PL_vtbl_packelem
# define VTBL_dbline &PL_vtbl_dbline
# define VTBL_isa &PL_vtbl_isa
# define VTBL_isaelem &PL_vtbl_isaelem
# define VTBL_arylen &PL_vtbl_arylen
# define VTBL_glob &PL_vtbl_glob
# define VTBL_mglob &PL_vtbl_mglob
# define VTBL_nkeys &PL_vtbl_nkeys
# define VTBL_taint &PL_vtbl_taint
# define VTBL_substr &PL_vtbl_substr
# define VTBL_vec &PL_vtbl_vec
# define VTBL_pos &PL_vtbl_pos
# define VTBL_bm &PL_vtbl_bm
# define VTBL_fm &PL_vtbl_fm
# define VTBL_uvar &PL_vtbl_uvar
# define VTBL_defelem &PL_vtbl_defelem
# define VTBL_regexp &PL_vtbl_regexp
# define VTBL_regdata &PL_vtbl_regdata
# define VTBL_regdatum &PL_vtbl_regdatum
# ifdef USE_LOCALE_COLLATE
# define VTBL_collxfrm &PL_vtbl_collxfrm
# endif
# define VTBL_amagic &PL_vtbl_amagic
# define VTBL_amagicelem &PL_vtbl_amagicelem
#endif
#include "perlapi.h"
#ifndef PERL_MAD
# undef PL_madskills
# undef PL_xmlfp
# define PL_madskills 0
# define PL_xmlfp 0
#endif
#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_NO_GET_CONTEXT) && !defined(PERL_CORE)
# undef aTHX
# undef aTHX_
# define aTHX PERL_GET_THX
# define aTHX_ aTHX,
#endif
#if defined(PERL_IMPLICIT_SYS) && !defined(PERL_CORE)
# ifndef NO_XSLOCKS
# if defined (NETWARE) && defined (USE_STDIO)
# define times PerlProc_times
# define setuid PerlProc_setuid
# define setgid PerlProc_setgid
# define getpid PerlProc_getpid
# define pause PerlProc_pause
# define exit PerlProc_exit
# define _exit PerlProc__exit
# else
# undef closedir
# undef opendir
# undef stdin
# undef stdout
# undef stderr
# undef feof
# undef ferror
# undef fgetpos
# undef ioctl
# undef getlogin
# undef setjmp
# undef getc
# undef ungetc
# undef fileno
/* Following symbols were giving redefinition errors while building extensions - sgp 17th Oct 2000 */
#ifdef NETWARE
# undef readdir
# undef fstat
# undef stat
# undef longjmp
# undef endhostent
# undef endnetent
# undef endprotoent
# undef endservent
# undef gethostbyaddr
# undef gethostbyname
# undef gethostent
# undef getnetbyaddr
# undef getnetbyname
# undef getnetent
# undef getprotobyname
# undef getprotobynumber
# undef getprotoent
# undef getservbyname
# undef getservbyport
# undef getservent
# undef inet_ntoa
# undef sethostent
# undef setnetent
# undef setprotoent
# undef setservent
#endif /* NETWARE */
# undef socketpair
# define mkdir PerlDir_mkdir
# define chdir PerlDir_chdir
# define rmdir PerlDir_rmdir
# define closedir PerlDir_close
# define opendir PerlDir_open
# define readdir PerlDir_read
# define rewinddir PerlDir_rewind
# define seekdir PerlDir_seek
# define telldir PerlDir_tell
# define putenv PerlEnv_putenv
# define getenv PerlEnv_getenv
# define uname PerlEnv_uname
# define stdin PerlSIO_stdin
# define stdout PerlSIO_stdout
# define stderr PerlSIO_stderr
# define fopen PerlSIO_fopen
# define fclose PerlSIO_fclose
# define feof PerlSIO_feof
# define ferror PerlSIO_ferror
# define clearerr PerlSIO_clearerr
# define getc PerlSIO_getc
# define fputc PerlSIO_fputc
# define fputs PerlSIO_fputs
# define fflush PerlSIO_fflush
# define ungetc PerlSIO_ungetc
# define fileno PerlSIO_fileno
# define fdopen PerlSIO_fdopen
# define freopen PerlSIO_freopen
# define fread PerlSIO_fread
# define fwrite PerlSIO_fwrite
# define setbuf PerlSIO_setbuf
# define setvbuf PerlSIO_setvbuf
# define setlinebuf PerlSIO_setlinebuf
# define stdoutf PerlSIO_stdoutf
# define vfprintf PerlSIO_vprintf
# define ftell PerlSIO_ftell
# define fseek PerlSIO_fseek
# define fgetpos PerlSIO_fgetpos
# define fsetpos PerlSIO_fsetpos
# define frewind PerlSIO_rewind
# define tmpfile PerlSIO_tmpfile
# define access PerlLIO_access
# define chmod PerlLIO_chmod
# define chsize PerlLIO_chsize
# define close PerlLIO_close
# define dup PerlLIO_dup
# define dup2 PerlLIO_dup2
# define flock PerlLIO_flock
# define fstat PerlLIO_fstat
# define ioctl PerlLIO_ioctl
# define isatty PerlLIO_isatty
# define link PerlLIO_link
# define lseek PerlLIO_lseek
# define lstat PerlLIO_lstat
# define mktemp PerlLIO_mktemp
# define open PerlLIO_open
# define read PerlLIO_read
# define rename PerlLIO_rename
# define setmode PerlLIO_setmode
# define stat(buf,sb) PerlLIO_stat(buf,sb)
# define tmpnam PerlLIO_tmpnam
# define umask PerlLIO_umask
# define unlink PerlLIO_unlink
# define utime PerlLIO_utime
# define write PerlLIO_write
# define malloc PerlMem_malloc
# define realloc PerlMem_realloc
# define free PerlMem_free
# define abort PerlProc_abort
# define exit PerlProc_exit
# define _exit PerlProc__exit
# define execl PerlProc_execl
# define execv PerlProc_execv
# define execvp PerlProc_execvp
# define getuid PerlProc_getuid
# define geteuid PerlProc_geteuid
# define getgid PerlProc_getgid
# define getegid PerlProc_getegid
# define getlogin PerlProc_getlogin
# define kill PerlProc_kill
# define killpg PerlProc_killpg
# define pause PerlProc_pause
# define popen PerlProc_popen
# define pclose PerlProc_pclose
# define pipe PerlProc_pipe
# define setuid PerlProc_setuid
# define setgid PerlProc_setgid
# define sleep PerlProc_sleep
# define times PerlProc_times
# define wait PerlProc_wait
# define setjmp PerlProc_setjmp
# define longjmp PerlProc_longjmp
# define signal PerlProc_signal
# define getpid PerlProc_getpid
# define gettimeofday PerlProc_gettimeofday
# define htonl PerlSock_htonl
# define htons PerlSock_htons
# define ntohl PerlSock_ntohl
# define ntohs PerlSock_ntohs
# define accept PerlSock_accept
# define bind PerlSock_bind
# define connect PerlSock_connect
# define endhostent PerlSock_endhostent
# define endnetent PerlSock_endnetent
# define endprotoent PerlSock_endprotoent
# define endservent PerlSock_endservent
# define gethostbyaddr PerlSock_gethostbyaddr
# define gethostbyname PerlSock_gethostbyname
# define gethostent PerlSock_gethostent
# define gethostname PerlSock_gethostname
# define getnetbyaddr PerlSock_getnetbyaddr
# define getnetbyname PerlSock_getnetbyname
# define getnetent PerlSock_getnetent
# define getpeername PerlSock_getpeername
# define getprotobyname PerlSock_getprotobyname
# define getprotobynumber PerlSock_getprotobynumber
# define getprotoent PerlSock_getprotoent
# define getservbyname PerlSock_getservbyname
# define getservbyport PerlSock_getservbyport
# define getservent PerlSock_getservent
# define getsockname PerlSock_getsockname
# define getsockopt PerlSock_getsockopt
# define inet_addr PerlSock_inet_addr
# define inet_ntoa PerlSock_inet_ntoa
# define listen PerlSock_listen
# define recv PerlSock_recv
# define recvfrom PerlSock_recvfrom
# define select PerlSock_select
# define send PerlSock_send
# define sendto PerlSock_sendto
# define sethostent PerlSock_sethostent
# define setnetent PerlSock_setnetent
# define setprotoent PerlSock_setprotoent
# define setservent PerlSock_setservent
# define setsockopt PerlSock_setsockopt
# define shutdown PerlSock_shutdown
# define socket PerlSock_socket
# define socketpair PerlSock_socketpair
# endif /* NETWARE && USE_STDIO */
# ifdef USE_SOCKETS_AS_HANDLES
# undef fd_set
# undef FD_SET
# undef FD_CLR
# undef FD_ISSET
# undef FD_ZERO
# define fd_set Perl_fd_set
# define FD_SET(n,p) PERL_FD_SET(n,p)
# define FD_CLR(n,p) PERL_FD_CLR(n,p)
# define FD_ISSET(n,p) PERL_FD_ISSET(n,p)
# define FD_ZERO(p) PERL_FD_ZERO(p)
# endif /* USE_SOCKETS_AS_HANDLES */
# endif /* NO_XSLOCKS */
#endif /* PERL_IMPLICIT_SYS && !PERL_CORE */
#endif /* _INC_PERL_XSUB_H */ /* include guard */
/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*
* ex: set ts=8 sts=4 sw=4 noet:
*/
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