Mercurial > gnulib
view lib/sys_select.in.h @ 15329:e121c7cef4a9
pselect: new module
* lib/sys_select.in.h: Include <signal.h>, for 'sigset_t'.
(pselect): New decls.
* m4/sys_select_h.m4 (gl_HEADER_SYS_SELECT): Require AC_C_RESTRICT,
since the standard pselect decl uses 'restrict'.
(gl_SYS_SELECT_H_DEFAULTS): Add defaults for GNULIB_PSELECT,
HAVE_PSELECT, REPLACE_PSELECT.
* modules/sys_select (sys/select.h): Substitute GNULIB_PSELECT,
HAVE_PSELECT, REPLACE_PSELECT.
* lib/pselect.c, m4/pselect.m4, modules/pselect: New files.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Thu, 30 Jun 2011 14:57:39 -0700 |
parents | c7ae1577bd26 |
children | f61aaaf49e43 |
line wrap: on
line source
/* Substitute for <sys/select.h>. Copyright (C) 2007-2011 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ # if __GNUC__ >= 3 @PRAGMA_SYSTEM_HEADER@ # endif @PRAGMA_COLUMNS@ /* On OSF/1, <sys/types.h> and <sys/time.h> include <sys/select.h>. Simply delegate to the system's header in this case. */ #if @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TYPES_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H) && defined _OSF_SOURCE # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@ #elif @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TIME_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H) && defined _OSF_SOURCE # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@ #else #ifndef _@GUARD_PREFIX@_SYS_SELECT_H #if @HAVE_SYS_SELECT_H@ /* On many platforms, <sys/select.h> assumes prior inclusion of <sys/types.h>. */ # include <sys/types.h> /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration of 'struct timeval', and no definition of this type. Also, MacOS X, AIX, HP-UX, IRIX, Solaris, Interix declare select() in <sys/time.h>. But avoid namespace pollution on glibc systems. */ # ifndef __GLIBC__ # include <sys/time.h> # endif /* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation that relies on memset(), but without including <string.h>. But in any case avoid namespace pollution on glibc systems. */ # if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \ && ! defined __GLIBC__ # include <string.h> # endif /* The include_next requires a split double-inclusion guard. */ # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@ #endif #ifndef _@GUARD_PREFIX@_SYS_SELECT_H #define _@GUARD_PREFIX@_SYS_SELECT_H #if !@HAVE_SYS_SELECT_H@ /* A platform that lacks <sys/select.h>. */ /* Get the 'struct timeval' and 'fd_set' types and the FD_* macros on most platforms. */ # include <sys/time.h> /* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation that relies on memset(), but without including <string.h>. */ # if defined __hpux # include <string.h> # endif /* On native Windows platforms: Get the 'fd_set' type. Also, gnulib's <sys/socket.h> redefines select so as to hide the declaration from <winsock2.h>. */ # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ # include <sys/socket.h> # endif #endif /* Get definition of 'sigset_t'. But avoid namespace pollution on glibc systems. */ #if !(defined __GLIBC__ && !defined __UCLIBC__) # include <signal.h> #endif /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ /* The definition of _GL_WARN_ON_USE is copied here. */ #if @GNULIB_PSELECT@ # if @REPLACE_PSELECT@ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef pselect # define pselect rpl_pselect # endif _GL_FUNCDECL_RPL (pselect, int, (int, fd_set *restrict, fd_set *restrict, fd_set *restrict, struct timespec const *restrict, const sigset_t *restrict)); _GL_CXXALIAS_RPL (pselect, int, (int, fd_set *restrict, fd_set *restrict, fd_set *restrict, struct timespec const *restrict, const sigset_t *restrict)); # else # if !@HAVE_PSELECT@ _GL_FUNCDECL_SYS (pselect, int, (int, fd_set *restrict, fd_set *restrict, fd_set *restrict, struct timespec const *restrict, const sigset_t *restrict)); # endif _GL_CXXALIAS_SYS (pselect, int, (int, fd_set *restrict, fd_set *restrict, fd_set *restrict, struct timespec const *restrict, const sigset_t *restrict)); # endif _GL_CXXALIASWARN (pselect); #elif defined GNULIB_POSIXCHECK # undef pselect # if HAVE_RAW_DECL_PSELECT _GL_WARN_ON_USE (pselect, "pselect is not portable - " "use gnulib module pselect for portability"); # endif #endif #if @GNULIB_SELECT@ # if @REPLACE_SELECT@ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef select # define select rpl_select # endif _GL_FUNCDECL_RPL (select, int, (int, fd_set *, fd_set *, fd_set *, struct timeval *)); _GL_CXXALIAS_RPL (select, int, (int, fd_set *, fd_set *, fd_set *, struct timeval *)); # else _GL_CXXALIAS_SYS (select, int, (int, fd_set *, fd_set *, fd_set *, struct timeval *)); # endif _GL_CXXALIASWARN (select); #elif @HAVE_WINSOCK2_H@ # undef select # define select select_used_without_requesting_gnulib_module_select #elif defined GNULIB_POSIXCHECK # undef select # if HAVE_RAW_DECL_SELECT _GL_WARN_ON_USE (select, "select is not always POSIX compliant - " "use gnulib module select for portability"); # endif #endif #endif /* _@GUARD_PREFIX@_SYS_SELECT_H */ #endif /* _@GUARD_PREFIX@_SYS_SELECT_H */ #endif /* OSF/1 */