root/lib/sys_time.in.h

     1 /* Provide a more complete sys/time.h.
     2 
     3    Copyright (C) 2007-2023 Free Software Foundation, Inc.
     4 
     5    This file is free software: you can redistribute it and/or modify
     6    it under the terms of the GNU Lesser General Public License as
     7    published by the Free Software Foundation; either version 2.1 of the
     8    License, or (at your option) any later version.
     9 
    10    This file 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 Lesser General Public License for more details.
    14 
    15    You should have received a copy of the GNU Lesser 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 #  if @REPLACE_STRUCT_TIMEVAL@
   118 #   define timeval rpl_timeval
   119   typedef ::timeval timeval;
   120 #  endif
   121 }
   122 # endif
   123 #elif defined GNULIB_POSIXCHECK
   124 # undef gettimeofday
   125 # if HAVE_RAW_DECL_GETTIMEOFDAY
   126 _GL_WARN_ON_USE (gettimeofday, "gettimeofday is unportable - "
   127                  "use gnulib module gettimeofday for portability");
   128 # endif
   129 #endif
   130 
   131 /* Hide some function declarations from <winsock2.h>.  */
   132 
   133 #if defined _MSC_VER && @HAVE_WINSOCK2_H@
   134 # if !defined _@GUARD_PREFIX@_UNISTD_H
   135 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
   136 #   undef close
   137 #   define close close_used_without_including_unistd_h
   138 #  elif !defined __clang__
   139      _GL_WARN_ON_USE (close,
   140                       "close() used without including <unistd.h>");
   141 #  endif
   142 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
   143 #   undef gethostname
   144 #   define gethostname gethostname_used_without_including_unistd_h
   145 #  else
   146      _GL_WARN_ON_USE (gethostname,
   147                       "gethostname() used without including <unistd.h>");
   148 #  endif
   149 # endif
   150 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
   151 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
   152 #   undef socket
   153 #   define socket              socket_used_without_including_sys_socket_h
   154 #   undef connect
   155 #   define connect             connect_used_without_including_sys_socket_h
   156 #   undef accept
   157 #   define accept              accept_used_without_including_sys_socket_h
   158 #   undef bind
   159 #   define bind                bind_used_without_including_sys_socket_h
   160 #   undef getpeername
   161 #   define getpeername         getpeername_used_without_including_sys_socket_h
   162 #   undef getsockname
   163 #   define getsockname         getsockname_used_without_including_sys_socket_h
   164 #   undef getsockopt
   165 #   define getsockopt          getsockopt_used_without_including_sys_socket_h
   166 #   undef listen
   167 #   define listen              listen_used_without_including_sys_socket_h
   168 #   undef recv
   169 #   define recv                recv_used_without_including_sys_socket_h
   170 #   undef send
   171 #   define send                send_used_without_including_sys_socket_h
   172 #   undef recvfrom
   173 #   define recvfrom            recvfrom_used_without_including_sys_socket_h
   174 #   undef sendto
   175 #   define sendto              sendto_used_without_including_sys_socket_h
   176 #   undef setsockopt
   177 #   define setsockopt          setsockopt_used_without_including_sys_socket_h
   178 #   undef shutdown
   179 #   define shutdown            shutdown_used_without_including_sys_socket_h
   180 #  else
   181      _GL_WARN_ON_USE (socket,
   182                       "socket() used without including <sys/socket.h>");
   183      _GL_WARN_ON_USE (connect,
   184                       "connect() used without including <sys/socket.h>");
   185      _GL_WARN_ON_USE (accept,
   186                       "accept() used without including <sys/socket.h>");
   187      _GL_WARN_ON_USE (bind,
   188                       "bind() used without including <sys/socket.h>");
   189      _GL_WARN_ON_USE (getpeername,
   190                       "getpeername() used without including <sys/socket.h>");
   191      _GL_WARN_ON_USE (getsockname,
   192                       "getsockname() used without including <sys/socket.h>");
   193      _GL_WARN_ON_USE (getsockopt,
   194                       "getsockopt() used without including <sys/socket.h>");
   195      _GL_WARN_ON_USE (listen,
   196                       "listen() used without including <sys/socket.h>");
   197      _GL_WARN_ON_USE (recv,
   198                       "recv() used without including <sys/socket.h>");
   199      _GL_WARN_ON_USE (send,
   200                       "send() used without including <sys/socket.h>");
   201      _GL_WARN_ON_USE (recvfrom,
   202                       "recvfrom() used without including <sys/socket.h>");
   203      _GL_WARN_ON_USE (sendto,
   204                       "sendto() used without including <sys/socket.h>");
   205      _GL_WARN_ON_USE (setsockopt,
   206                       "setsockopt() used without including <sys/socket.h>");
   207      _GL_WARN_ON_USE (shutdown,
   208                       "shutdown() used without including <sys/socket.h>");
   209 #  endif
   210 # endif
   211 # if !defined _@GUARD_PREFIX@_SYS_SELECT_H
   212 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
   213 #   undef select
   214 #   define select select_used_without_including_sys_select_h
   215 #  else
   216      _GL_WARN_ON_USE (select,
   217                       "select() used without including <sys/select.h>");
   218 #  endif
   219 # endif
   220 #endif
   221 
   222 #endif /* _@GUARD_PREFIX@_SYS_TIME_H */
   223 #endif /* _CYGWIN_SYS_TIME_H */
   224 #endif /* _@GUARD_PREFIX@_SYS_TIME_H */