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annotate lib/sys_select.in.h @ 14079:97fc9a21a8fb

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maint: update almost all copyright ranges to include 2011 Run the new "make update-copyright" rule.
author Jim Meyering <meyering@redhat.com>
date Sat, 01 Jan 2011 20:17:23 +0100
parents a9b8cdb01be3
children 0e87a6225f1a
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1 /* Substitute for <sys/select.h>.
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2 Copyright (C) 2007-2011 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 # if __GNUC__ >= 3
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19 @PRAGMA_SYSTEM_HEADER@
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20 # endif
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21 @PRAGMA_COLUMNS@
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22
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23 /* On OSF/1, <sys/types.h> and <sys/time.h> include <sys/select.h>.
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24 Simply delegate to the system's header in this case. */
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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
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26
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27 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
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28 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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29
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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
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31
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32 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
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33 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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34
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35 #else
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36
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37 #ifndef _GL_SYS_SELECT_H
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38
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39 #if @HAVE_SYS_SELECT_H@
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40
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41 /* On many platforms, <sys/select.h> assumes prior inclusion of
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42 <sys/types.h>. */
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43 # include <sys/types.h>
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44
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45 /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
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46 of 'struct timeval', and no definition of this type.
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47 Also, MacOS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
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48 in <sys/time.h>.
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49 But avoid namespace pollution on glibc systems. */
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50 # ifndef __GLIBC__
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51 # include <sys/time.h>
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52 # endif
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53
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54 /* On Solaris 10, <sys/select.h> provides an FD_ZERO implementation
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55 that relies on memset(), but without including <string.h>.
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56 But in any case avoid namespace pollution on glibc systems. */
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57 # if (defined __OpenBSD__ || defined __sun || defined __osf__ || defined __BEOS__) \
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58 && ! defined __GLIBC__
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59 # include <string.h>
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60 # endif
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61
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62 /* The include_next requires a split double-inclusion guard. */
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63 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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64
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65 #endif
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66
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67 #ifndef _GL_SYS_SELECT_H
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68 #define _GL_SYS_SELECT_H
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69
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70 #if !@HAVE_SYS_SELECT_H@
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71 /* A platform that lacks <sys/select.h>. */
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72 /* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
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73 on most platforms. */
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74 # include <sys/time.h>
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75 /* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
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76 that relies on memset(), but without including <string.h>. */
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77 # if defined __hpux
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78 # include <string.h>
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79 # endif
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80 /* On native Windows platforms:
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81 Get the 'fd_set' type. Also, gnulib's <sys/socket.h> redefines select
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82 so as to hide the declaration from <winsock2.h>. */
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83 # include <sys/socket.h>
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84 #endif
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85
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86 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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87
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88 /* The definition of _GL_WARN_ON_USE is copied here. */
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89
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90
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91 #if @GNULIB_SELECT@
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92 # if @HAVE_WINSOCK2_H@ || @REPLACE_SELECT@
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93 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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94 # undef select
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95 # define select rpl_select
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96 # endif
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97 _GL_FUNCDECL_RPL (select, int,
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98 (int, fd_set *, fd_set *, fd_set *, struct timeval *));
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99 _GL_CXXALIAS_RPL (select, int,
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100 (int, fd_set *, fd_set *, fd_set *, struct timeval *));
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101 # else
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102 _GL_CXXALIAS_SYS (select, int,
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103 (int, fd_set *, fd_set *, fd_set *, struct timeval *));
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104 # endif
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105 _GL_CXXALIASWARN (select);
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106 #elif @HAVE_WINSOCK2_H@
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107 # undef select
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108 # define select select_used_without_requesting_gnulib_module_select
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109 #elif defined GNULIB_POSIXCHECK
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110 # undef select
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111 # if HAVE_RAW_DECL_SELECT
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112 _GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
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113 "use gnulib module select for portability");
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114 # endif
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115 #endif
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116
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117
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118 #endif /* _GL_SYS_SELECT_H */
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119 #endif /* _GL_SYS_SELECT_H */
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120 #endif /* OSF/1 */