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
  22 /* On OSF/1, <sys/types.h> and <sys/time.h> include <sys/select.h>.
  23    Simply delegate to the system's header in this case.  */
  24 #if @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TYPES_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H) && defined _OSF_SOURCE
  25
  26 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
  27 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  28
  29 #elif @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TIME_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H) && defined _OSF_SOURCE
  30
  31 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
  32 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  33
  34 #else
  35
  36 #ifndef _GL_SYS_SELECT_H
  37
  38 #if @HAVE_SYS_SELECT_H@
  39
  40 /* On many platforms, <sys/select.h> assumes prior inclusion of
  41    <sys/types.h>.  */
  42 # include <sys/types.h>
  43
  44 /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
  45    of 'struct timeval', and no definition of this type.
  46    But avoid namespace pollution on glibc systems.  */
  47 # ifndef __GLIBC__
  48 #  include <sys/time.h>
  49 # endif
  50
  51 /* On Solaris 10, <sys/select.h> provides an FD_ZERO implementation
  52    that relies on memset(), but without including <string.h>.
  53    But avoid namespace pollution on glibc systems.  */
  54 # ifndef __GLIBC__
  55 #  include <string.h>
  56 # endif
  57
  58 /* The include_next requires a split double-inclusion guard.  */
  59 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  60
  61 #endif
  62
  63 #ifndef _GL_SYS_SELECT_H
  64 #define _GL_SYS_SELECT_H
  65
  66 #if !@HAVE_SYS_SELECT_H@
  67
  68 /* A platform that lacks <sys/select.h>.  */
  69
  70 # include <sys/socket.h>
  71
  72 /* The definition of _GL_WARN_ON_USE is copied here.  */
  73
  74 # ifdef __cplusplus
  75 extern "C" {
  76 # endif
  77
  78 # if @GNULIB_SELECT@
  79 #  if @HAVE_WINSOCK2_H@ || @REPLACE_SELECT@
  80 #   undef select
  81 #   define select rpl_select
  82 extern int rpl_select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
  83 #  endif
  84 # elif @HAVE_WINSOCK2_H@
  85 #  undef select
  86 #  define select select_used_without_requesting_gnulib_module_select
  87 # elif defined GNULIB_POSIXCHECK
  88 #  undef select
  89 #  if HAVE_RAW_DECL_SELECT
  90 _GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
  91                  "use gnulib module select for portability");
  92 #  endif
  93 # endif
  94
  95 # ifdef __cplusplus
  96 }
  97 # endif
  98
  99 #endif
 100
 101 #endif /* _GL_SYS_SELECT_H */
 102 #endif /* _GL_SYS_SELECT_H */
 103 #endif /* OSF/1 */