gl/sys_select.in.h

   1 /* Substitute for <sys/select.h>.
   2    Copyright (C) 2007-2010 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 # if __GNUC__ >= 3
  19 @PRAGMA_SYSTEM_HEADER@
  20 # endif
  21 @PRAGMA_COLUMNS@
  22
  23 /* On OSF/1, <sys/types.h> and <sys/time.h> include <sys/select.h>.
  24    Simply delegate to the system's header in this case.  */
  25 #if @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TYPES_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H) && defined _OSF_SOURCE
  26
  27 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
  28 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  29
  30 #elif @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TIME_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H) && defined _OSF_SOURCE
  31
  32 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
  33 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  34
  35 #else
  36
  37 #ifndef _GL_SYS_SELECT_H
  38
  39 #if @HAVE_SYS_SELECT_H@
  40
  41 /* On many platforms, <sys/select.h> assumes prior inclusion of
  42    <sys/types.h>.  */
  43 # include <sys/types.h>
  44
  45 /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
  46    of 'struct timeval', and no definition of this type.
  47    But avoid namespace pollution on glibc systems.  */
  48 # ifndef __GLIBC__
  49 #  include <sys/time.h>
  50 # endif
  51
  52 /* On Solaris 10, <sys/select.h> provides an FD_ZERO implementation
  53    that relies on memset(), but without including <string.h>.
  54    But in any case avoid namespace pollution on glibc systems.  */
  55 # if (defined __OpenBSD__ || defined __sun || defined __osf__ || defined __BEOS__) \
  56      && ! defined __GLIBC__
  57 #  include <string.h>
  58 # endif
  59
  60 /* The include_next requires a split double-inclusion guard.  */
  61 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  62
  63 #endif
  64
  65 #ifndef _GL_SYS_SELECT_H
  66 #define _GL_SYS_SELECT_H
  67
  68 #if !@HAVE_SYS_SELECT_H@ || @REPLACE_SELECT@
  69 /* A platform that lacks <sys/select.h>.  */
  70 # include <sys/socket.h>
  71 #endif
  72
  73 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  74
  75 /* The definition of _GL_WARN_ON_USE is copied here.  */
  76
  77
  78 #if @GNULIB_SELECT@
  79 # if @HAVE_WINSOCK2_H@ || @REPLACE_SELECT@
  80 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  81 #   undef select
  82 #   define select rpl_select
  83 #  endif
  84 _GL_FUNCDECL_RPL (select, int,
  85                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
  86 _GL_CXXALIAS_RPL (select, int,
  87                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
  88 # else
  89 _GL_CXXALIAS_SYS (select, int,
  90                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
  91 # endif
  92 _GL_CXXALIASWARN (select);
  93 #elif @HAVE_WINSOCK2_H@
  94 # undef select
  95 # define select select_used_without_requesting_gnulib_module_select
  96 #elif defined GNULIB_POSIXCHECK
  97 # undef select
  98 # if HAVE_RAW_DECL_SELECT
  99 _GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
 100                  "use gnulib module select for portability");
 101 # endif
 102 #endif
 103
 104
 105 #endif /* _GL_SYS_SELECT_H */
 106 #endif /* _GL_SYS_SELECT_H */
 107 #endif /* OSF/1 */