lib/sys_select.in.h

   1 /* Substitute for <sys/select.h>.
   2    Copyright (C) 2007-2012 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, see <http://www.gnu.org/licenses/>.  */
  16
  17 # if __GNUC__ >= 3
  18 @PRAGMA_SYSTEM_HEADER@
  19 # endif
  20 @PRAGMA_COLUMNS@
  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 /* On IRIX 6.5, <sys/timespec.h> includes <sys/types.h>, which includes
  35    <sys/bsd_types.h>, which includes <sys/select.h>.  At this point we cannot
  36    include <signal.h>, because that includes <internal/signal_core.h>, which
  37    gives a syntax error because <sys/timespec.h> has not been completely
  38    processed.  Simply delegate to the system's header in this case.  */
  39 #elif @HAVE_SYS_SELECT_H@ && defined __sgi && (defined _SYS_BSD_TYPES_H && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H)
  40
  41 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H
  42 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  43
  44 /* On OpenBSD 5.0, <pthread.h> includes <sys/types.h>, which includes
  45    <sys/select.h>.  At this point we cannot include <signal.h>, because that
  46    includes gnulib's pthread.h override, which gives a syntax error because
  47    /usr/include/pthread.h has not been completely processed.  Simply delegate
  48    to the system's header in this case.  */
  49 #elif @HAVE_SYS_SELECT_H@ && defined __OpenBSD__ && (defined _PTHREAD_H_ && !defined PTHREAD_MUTEX_INITIALIZER)
  50
  51 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  52
  53 #else
  54
  55 #ifndef _@GUARD_PREFIX@_SYS_SELECT_H
  56
  57 /* On many platforms, <sys/select.h> assumes prior inclusion of
  58    <sys/types.h>.  Also, mingw defines sigset_t there, instead of
  59    in <signal.h> where it belongs.  */
  60 #include <sys/types.h>
  61
  62 #if @HAVE_SYS_SELECT_H@
  63
  64 /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
  65    of 'struct timeval', and no definition of this type.
  66    Also, Mac OS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
  67    in <sys/time.h>.
  68    But avoid namespace pollution on glibc systems.  */
  69 # ifndef __GLIBC__
  70 #  include <sys/time.h>
  71 # endif
  72
  73 /* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation
  74    that relies on memset(), but without including <string.h>.
  75    But in any case avoid namespace pollution on glibc systems.  */
  76 # if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \
  77      && ! defined __GLIBC__
  78 #  include <string.h>
  79 # endif
  80
  81 /* The include_next requires a split double-inclusion guard.  */
  82 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  83
  84 #endif
  85
  86 /* Get definition of 'sigset_t'.
  87    But avoid namespace pollution on glibc systems.
  88    Do this after the include_next (for the sake of OpenBSD 5.0) but before
  89    the split double-inclusion guard (for the sake of Solaris).  */
  90 #if !(defined __GLIBC__ && !defined __UCLIBC__)
  91 # include <signal.h>
  92 #endif
  93
  94 #ifndef _@GUARD_PREFIX@_SYS_SELECT_H
  95 #define _@GUARD_PREFIX@_SYS_SELECT_H
  96
  97 #if !@HAVE_SYS_SELECT_H@
  98 /* A platform that lacks <sys/select.h>.  */
  99 /* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
 100    on most platforms.  */
 101 # include <sys/time.h>
 102 /* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
 103    that relies on memset(), but without including <string.h>.  */
 104 # if defined __hpux
 105 #  include <string.h>
 106 # endif
 107 /* On native Windows platforms:
 108    Get the 'fd_set' type.
 109    Get the close() declaration before we override it.  */
 110 # if @HAVE_WINSOCK2_H@
 111 #  if !defined _GL_INCLUDING_WINSOCK2_H
 112 #   define _GL_INCLUDING_WINSOCK2_H
 113 #   include <winsock2.h>
 114 #   undef _GL_INCLUDING_WINSOCK2_H
 115 #  endif
 116 #  include <io.h>
 117 # endif
 118 #endif
 119
 120 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 121
 122 /* The definition of _GL_WARN_ON_USE is copied here.  */
 123
 124
 125 /* Fix some definitions from <winsock2.h>.  */
 126
 127 #if @HAVE_WINSOCK2_H@
 128
 129 # if !GNULIB_defined_rpl_fd_isset
 130
 131 /* Re-define FD_ISSET to avoid a WSA call while we are not using
 132    network sockets.  */
 133 static int
 134 rpl_fd_isset (SOCKET fd, fd_set * set)
 135 {
 136   u_int i;
 137   if (set == NULL)
 138     return 0;
 139
 140   for (i = 0; i < set->fd_count; i++)
 141     if (set->fd_array[i] == fd)
 142       return 1;
 143
 144   return 0;
 145 }
 146
 147 #  define GNULIB_defined_rpl_fd_isset 1
 148 # endif
 149
 150 # undef FD_ISSET
 151 # define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
 152
 153 #endif
 154
 155 /* Hide some function declarations from <winsock2.h>.  */
 156
 157 #if @HAVE_WINSOCK2_H@
 158 # if !defined _@GUARD_PREFIX@_UNISTD_H
 159 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 160 #   undef close
 161 #   define close close_used_without_including_unistd_h
 162 #  else
 163     _GL_WARN_ON_USE (close,
 164                      "close() used without including <unistd.h>");
 165 #  endif
 166 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 167 #   undef gethostname
 168 #   define gethostname gethostname_used_without_including_unistd_h
 169 #  else
 170     _GL_WARN_ON_USE (gethostname,
 171                      "gethostname() used without including <unistd.h>");
 172 #  endif
 173 # endif
 174 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
 175 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 176 #   undef socket
 177 #   define socket              socket_used_without_including_sys_socket_h
 178 #   undef connect
 179 #   define connect             connect_used_without_including_sys_socket_h
 180 #   undef accept
 181 #   define accept              accept_used_without_including_sys_socket_h
 182 #   undef bind
 183 #   define bind                bind_used_without_including_sys_socket_h
 184 #   undef getpeername
 185 #   define getpeername         getpeername_used_without_including_sys_socket_h
 186 #   undef getsockname
 187 #   define getsockname         getsockname_used_without_including_sys_socket_h
 188 #   undef getsockopt
 189 #   define getsockopt          getsockopt_used_without_including_sys_socket_h
 190 #   undef listen
 191 #   define listen              listen_used_without_including_sys_socket_h
 192 #   undef recv
 193 #   define recv                recv_used_without_including_sys_socket_h
 194 #   undef send
 195 #   define send                send_used_without_including_sys_socket_h
 196 #   undef recvfrom
 197 #   define recvfrom            recvfrom_used_without_including_sys_socket_h
 198 #   undef sendto
 199 #   define sendto              sendto_used_without_including_sys_socket_h
 200 #   undef setsockopt
 201 #   define setsockopt          setsockopt_used_without_including_sys_socket_h
 202 #   undef shutdown
 203 #   define shutdown            shutdown_used_without_including_sys_socket_h
 204 #  else
 205     _GL_WARN_ON_USE (socket,
 206                      "socket() used without including <sys/socket.h>");
 207     _GL_WARN_ON_USE (connect,
 208                      "connect() used without including <sys/socket.h>");
 209     _GL_WARN_ON_USE (accept,
 210                      "accept() used without including <sys/socket.h>");
 211     _GL_WARN_ON_USE (bind,
 212                      "bind() used without including <sys/socket.h>");
 213     _GL_WARN_ON_USE (getpeername,
 214                      "getpeername() used without including <sys/socket.h>");
 215     _GL_WARN_ON_USE (getsockname,
 216                      "getsockname() used without including <sys/socket.h>");
 217     _GL_WARN_ON_USE (getsockopt,
 218                      "getsockopt() used without including <sys/socket.h>");
 219     _GL_WARN_ON_USE (listen,
 220                      "listen() used without including <sys/socket.h>");
 221     _GL_WARN_ON_USE (recv,
 222                      "recv() used without including <sys/socket.h>");
 223     _GL_WARN_ON_USE (send,
 224                      "send() used without including <sys/socket.h>");
 225     _GL_WARN_ON_USE (recvfrom,
 226                      "recvfrom() used without including <sys/socket.h>");
 227     _GL_WARN_ON_USE (sendto,
 228                      "sendto() used without including <sys/socket.h>");
 229     _GL_WARN_ON_USE (setsockopt,
 230                      "setsockopt() used without including <sys/socket.h>");
 231     _GL_WARN_ON_USE (shutdown,
 232                      "shutdown() used without including <sys/socket.h>");
 233 #  endif
 234 # endif
 235 #endif
 236
 237
 238 #if @GNULIB_PSELECT@
 239 # if @REPLACE_PSELECT@
 240 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 241 #   undef pselect
 242 #   define pselect rpl_pselect
 243 #  endif
 244 _GL_FUNCDECL_RPL (pselect, int,
 245                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 246                    struct timespec const *restrict, const sigset_t *restrict));
 247 _GL_CXXALIAS_RPL (pselect, int,
 248                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 249                    struct timespec const *restrict, const sigset_t *restrict));
 250 # else
 251 #  if !@HAVE_PSELECT@
 252 _GL_FUNCDECL_SYS (pselect, int,
 253                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 254                    struct timespec const *restrict, const sigset_t *restrict));
 255 #  endif
 256 _GL_CXXALIAS_SYS (pselect, int,
 257                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 258                    struct timespec const *restrict, const sigset_t *restrict));
 259 # endif
 260 _GL_CXXALIASWARN (pselect);
 261 #elif defined GNULIB_POSIXCHECK
 262 # undef pselect
 263 # if HAVE_RAW_DECL_PSELECT
 264 _GL_WARN_ON_USE (pselect, "pselect is not portable - "
 265                  "use gnulib module pselect for portability");
 266 # endif
 267 #endif
 268
 269 #if @GNULIB_SELECT@
 270 # if @REPLACE_SELECT@
 271 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 272 #   undef select
 273 #   define select rpl_select
 274 #  endif
 275 _GL_FUNCDECL_RPL (select, int,
 276                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
 277 _GL_CXXALIAS_RPL (select, int,
 278                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
 279 # else
 280 _GL_CXXALIAS_SYS (select, int,
 281                   (int, fd_set *, fd_set *, fd_set *, struct timeval *));
 282 # endif
 283 _GL_CXXALIASWARN (select);
 284 #elif @HAVE_WINSOCK2_H@
 285 # undef select
 286 # define select select_used_without_requesting_gnulib_module_select
 287 #elif defined GNULIB_POSIXCHECK
 288 # undef select
 289 # if HAVE_RAW_DECL_SELECT
 290 _GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
 291                  "use gnulib module select for portability");
 292 # endif
 293 #endif
 294
 295
 296 #endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
 297 #endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
 298 #endif /* OSF/1 */