lib/sys_time.in.h

   1 /* Provide a more complete sys/time.h.
   2
   3    Copyright (C) 2007-2019 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
  17
  18 /* Written by Paul Eggert.  */
  19
  20 #ifndef _@GUARD_PREFIX@_SYS_TIME_H
  21
  22 #if __GNUC__ >= 3
  23 @PRAGMA_SYSTEM_HEADER@
  24 #endif
  25 @PRAGMA_COLUMNS@
  26
  27 /* On Cygwin and on many BSDish systems, <sys/time.h> includes itself
  28    recursively via <sys/select.h>.
  29    Simply delegate to the system's header in this case; it is a no-op.
  30    Without this extra ifdef, the C++ gettimeofday declaration below
  31    would be a forward declaration in gnulib's nested <sys/time.h>.  */
  32 #if defined _CYGWIN_SYS_TIME_H || defined _SYS_TIME_H || defined _SYS_TIME_H_
  33 # @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
  34 #else
  35
  36 /* The include_next requires a split double-inclusion guard.  */
  37 #if @HAVE_SYS_TIME_H@
  38 # @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
  39 #endif
  40
  41 #ifndef _@GUARD_PREFIX@_SYS_TIME_H
  42 #define _@GUARD_PREFIX@_SYS_TIME_H
  43
  44 #if ! @HAVE_SYS_TIME_H@
  45 # include <time.h>
  46 #endif
  47
  48 /* On native Windows with MSVC, get the 'struct timeval' type.
  49    Also, on native Windows with a 64-bit time_t, where we are overriding the
  50    'struct timeval' type, get all declarations of system functions whose
  51    signature contains 'struct timeval'.  */
  52 #if (defined _MSC_VER || @REPLACE_STRUCT_TIMEVAL@) && @HAVE_WINSOCK2_H@ && !defined _GL_INCLUDING_WINSOCK2_H
  53 # define _GL_INCLUDING_WINSOCK2_H
  54 # include <winsock2.h>
  55 # undef _GL_INCLUDING_WINSOCK2_H
  56 #endif
  57
  58 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  59
  60 /* The definition of _GL_ARG_NONNULL is copied here.  */
  61
  62 /* The definition of _GL_WARN_ON_USE is copied here.  */
  63
  64 #ifdef __cplusplus
  65 extern "C" {
  66 #endif
  67
  68 #if !@HAVE_STRUCT_TIMEVAL@ || @REPLACE_STRUCT_TIMEVAL@
  69
  70 # if @REPLACE_STRUCT_TIMEVAL@
  71 #  define timeval rpl_timeval
  72 # endif
  73
  74 # if !GNULIB_defined_struct_timeval
  75 struct timeval
  76 {
  77   time_t tv_sec;
  78   long int tv_usec;
  79 };
  80 #  define GNULIB_defined_struct_timeval 1
  81 # endif
  82
  83 #endif
  84
  85 #ifdef __cplusplus
  86 }
  87 #endif
  88
  89 #if @GNULIB_GETTIMEOFDAY@
  90 # if @REPLACE_GETTIMEOFDAY@
  91 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  92 #   undef gettimeofday
  93 #   define gettimeofday rpl_gettimeofday
  94 #  endif
  95 _GL_FUNCDECL_RPL (gettimeofday, int,
  96                   (struct timeval *restrict, void *restrict)
  97                   _GL_ARG_NONNULL ((1)));
  98 _GL_CXXALIAS_RPL (gettimeofday, int,
  99                   (struct timeval *restrict, void *restrict));
 100 # else
 101 #  if !@HAVE_GETTIMEOFDAY@
 102 _GL_FUNCDECL_SYS (gettimeofday, int,
 103                   (struct timeval *restrict, void *restrict)
 104                   _GL_ARG_NONNULL ((1)));
 105 #  endif
 106 /* Need to cast, because on glibc systems, by default, the second argument is
 107                                                   struct timezone *.  */
 108 _GL_CXXALIAS_SYS_CAST (gettimeofday, int,
 109                        (struct timeval *restrict, void *restrict));
 110 # endif
 111 _GL_CXXALIASWARN (gettimeofday);
 112 # if defined __cplusplus && defined GNULIB_NAMESPACE
 113 namespace GNULIB_NAMESPACE {
 114   typedef ::timeval
 115 #undef timeval
 116     timeval;
 117 }
 118 # endif
 119 #elif defined GNULIB_POSIXCHECK
 120 # undef gettimeofday
 121 # if HAVE_RAW_DECL_GETTIMEOFDAY
 122 _GL_WARN_ON_USE (gettimeofday, "gettimeofday is unportable - "
 123                  "use gnulib module gettimeofday for portability");
 124 # endif
 125 #endif
 126
 127 /* Hide some function declarations from <winsock2.h>.  */
 128
 129 #if defined _MSC_VER && @HAVE_WINSOCK2_H@
 130 # if !defined _@GUARD_PREFIX@_UNISTD_H
 131 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 132 #   undef close
 133 #   define close close_used_without_including_unistd_h
 134 #  else
 135      _GL_WARN_ON_USE (close,
 136                       "close() used without including <unistd.h>");
 137 #  endif
 138 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 139 #   undef gethostname
 140 #   define gethostname gethostname_used_without_including_unistd_h
 141 #  else
 142      _GL_WARN_ON_USE (gethostname,
 143                       "gethostname() used without including <unistd.h>");
 144 #  endif
 145 # endif
 146 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
 147 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 148 #   undef socket
 149 #   define socket              socket_used_without_including_sys_socket_h
 150 #   undef connect
 151 #   define connect             connect_used_without_including_sys_socket_h
 152 #   undef accept
 153 #   define accept              accept_used_without_including_sys_socket_h
 154 #   undef bind
 155 #   define bind                bind_used_without_including_sys_socket_h
 156 #   undef getpeername
 157 #   define getpeername         getpeername_used_without_including_sys_socket_h
 158 #   undef getsockname
 159 #   define getsockname         getsockname_used_without_including_sys_socket_h
 160 #   undef getsockopt
 161 #   define getsockopt          getsockopt_used_without_including_sys_socket_h
 162 #   undef listen
 163 #   define listen              listen_used_without_including_sys_socket_h
 164 #   undef recv
 165 #   define recv                recv_used_without_including_sys_socket_h
 166 #   undef send
 167 #   define send                send_used_without_including_sys_socket_h
 168 #   undef recvfrom
 169 #   define recvfrom            recvfrom_used_without_including_sys_socket_h
 170 #   undef sendto
 171 #   define sendto              sendto_used_without_including_sys_socket_h
 172 #   undef setsockopt
 173 #   define setsockopt          setsockopt_used_without_including_sys_socket_h
 174 #   undef shutdown
 175 #   define shutdown            shutdown_used_without_including_sys_socket_h
 176 #  else
 177      _GL_WARN_ON_USE (socket,
 178                       "socket() used without including <sys/socket.h>");
 179      _GL_WARN_ON_USE (connect,
 180                       "connect() used without including <sys/socket.h>");
 181      _GL_WARN_ON_USE (accept,
 182                       "accept() used without including <sys/socket.h>");
 183      _GL_WARN_ON_USE (bind,
 184                       "bind() used without including <sys/socket.h>");
 185      _GL_WARN_ON_USE (getpeername,
 186                       "getpeername() used without including <sys/socket.h>");
 187      _GL_WARN_ON_USE (getsockname,
 188                       "getsockname() used without including <sys/socket.h>");
 189      _GL_WARN_ON_USE (getsockopt,
 190                       "getsockopt() used without including <sys/socket.h>");
 191      _GL_WARN_ON_USE (listen,
 192                       "listen() used without including <sys/socket.h>");
 193      _GL_WARN_ON_USE (recv,
 194                       "recv() used without including <sys/socket.h>");
 195      _GL_WARN_ON_USE (send,
 196                       "send() used without including <sys/socket.h>");
 197      _GL_WARN_ON_USE (recvfrom,
 198                       "recvfrom() used without including <sys/socket.h>");
 199      _GL_WARN_ON_USE (sendto,
 200                       "sendto() used without including <sys/socket.h>");
 201      _GL_WARN_ON_USE (setsockopt,
 202                       "setsockopt() used without including <sys/socket.h>");
 203      _GL_WARN_ON_USE (shutdown,
 204                       "shutdown() used without including <sys/socket.h>");
 205 #  endif
 206 # endif
 207 # if !defined _@GUARD_PREFIX@_SYS_SELECT_H
 208 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 209 #   undef select
 210 #   define select select_used_without_including_sys_select_h
 211 #  else
 212      _GL_WARN_ON_USE (select,
 213                       "select() used without including <sys/select.h>");
 214 #  endif
 215 # endif
 216 #endif
 217
 218 #endif /* _@GUARD_PREFIX@_SYS_TIME_H */
 219 #endif /* _CYGWIN_SYS_TIME_H */
 220 #endif /* _@GUARD_PREFIX@_SYS_TIME_H */