gl/sys_select.in.h

   1 /* Substitute for <sys/select.h>.
   2    Copyright (C) 2007-2011 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    Also, MacOS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
  48    in <sys/time.h>.
  49    But avoid namespace pollution on glibc systems.  */
  50 # ifndef __GLIBC__
  51 #  include <sys/time.h>
  52 # endif
  53
  54 /* On Solaris 10, <sys/select.h> provides an FD_ZERO implementation
  55    that relies on memset(), but without including <string.h>.
  56    But in any case avoid namespace pollution on glibc systems.  */
  57 # if (defined __OpenBSD__ || defined __sun || defined __osf__ || defined __BEOS__) \
  58      && ! defined __GLIBC__
  59 #  include <string.h>
  60 # endif
  61
  62 /* The include_next requires a split double-inclusion guard.  */
  63 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  64
  65 #endif
  66
  67 #ifndef _GL_SYS_SELECT_H
  68 #define _GL_SYS_SELECT_H
  69
  70 #if !@HAVE_SYS_SELECT_H@
  71 /* A platform that lacks <sys/select.h>.  */
  72 /* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
  73    on most platforms.  */
  74 # include <sys/time.h>
  75 /* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
  76    that relies on memset(), but without including <string.h>.  */
  77 # if defined __hpux
  78 #  include <string.h>
  79 # endif
  80 /* On native Windows platforms:
  81    Get the 'fd_set' type.  Also, gnulib's <sys/socket.h> redefines select
  82    so as to hide the declaration from <winsock2.h>.  */
  83 # include <sys/socket.h>
  84 #endif
  85
  86 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  87
  88 /* The definition of _GL_WARN_ON_USE is copied here.  */
  89
  90
  91 #if @GNULIB_SELECT@
  92 # if @HAVE_WINSOCK2_H@ || @REPLACE_SELECT@
  93 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  94 #   undef select
  95 #   define select rpl_select
  96 #  endif
  97 _GL_FUNCDECL_RPL (select, int,
  98                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
  99 _GL_CXXALIAS_RPL (select, int,
 100                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
 101 # else
 102 _GL_CXXALIAS_SYS (select, int,
 103                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
 104 # endif
 105 _GL_CXXALIASWARN (select);
 106 #elif @HAVE_WINSOCK2_H@
 107 # undef select
 108 # define select select_used_without_requesting_gnulib_module_select
 109 #elif defined GNULIB_POSIXCHECK
 110 # undef select
 111 # if HAVE_RAW_DECL_SELECT
 112 _GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
 113                  "use gnulib module select for portability");
 114 # endif
 115 #endif
 116
 117
 118 #endif /* _GL_SYS_SELECT_H */
 119 #endif /* _GL_SYS_SELECT_H */
 120 #endif /* OSF/1 */