Assume POSIX 1003.1-1988 or later for fcntl.h.

[bpt/emacs.git] / lib / sys_time.in.h

/* Provide a more complete sys/time.h.

   Copyright (C) 2007-2012 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, see <http://www.gnu.org/licenses/>.  */

/* Written by Paul Eggert.  */

#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@

#if defined _@GUARD_PREFIX@_SYS_TIME_H

/* Simply delegate to the system's header, without adding anything.  */
# if @HAVE_SYS_TIME_H@
#  @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
# endif

#else

# define _@GUARD_PREFIX@_SYS_TIME_H

# if @HAVE_SYS_TIME_H@
#  @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
# else
#  include <time.h>
# endif

/* On native Windows with MSVC, get the 'struct timeval' type.
   Also, on native Windows with a 64-bit time_t, where we are overriding the
   'struct timeval' type, get all declarations of system functions whose
   signature contains 'struct timeval'.  */
# if (defined _MSC_VER || @REPLACE_STRUCT_TIMEVAL@) && @HAVE_WINSOCK2_H@ && !defined _GL_INCLUDING_WINSOCK2_H
#  define _GL_INCLUDING_WINSOCK2_H
#  include <winsock2.h>
#  undef _GL_INCLUDING_WINSOCK2_H
# endif

/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */

/* The definition of _GL_ARG_NONNULL is copied here.  */

/* The definition of _GL_WARN_ON_USE is copied here.  */

# ifdef __cplusplus
extern "C" {
# endif

# if !@HAVE_STRUCT_TIMEVAL@ || @REPLACE_STRUCT_TIMEVAL@

#  if @REPLACE_STRUCT_TIMEVAL@
#   define timeval rpl_timeval
#  endif

#  if !GNULIB_defined_struct_timeval
struct timeval
{
  time_t tv_sec;
  long int tv_usec;
};
#   define GNULIB_defined_struct_timeval 1
#  endif

# endif

# ifdef __cplusplus
}
# endif

# if @GNULIB_GETTIMEOFDAY@
#  if @REPLACE_GETTIMEOFDAY@
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef gettimeofday
#    define gettimeofday rpl_gettimeofday
#   endif
_GL_FUNCDECL_RPL (gettimeofday, int,
                  (struct timeval *restrict, void *restrict)
                  _GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (gettimeofday, int,
                  (struct timeval *restrict, void *restrict));
#  else
#   if !@HAVE_GETTIMEOFDAY@
_GL_FUNCDECL_SYS (gettimeofday, int,
                  (struct timeval *restrict, void *restrict)
                  _GL_ARG_NONNULL ((1)));
#   endif
/* Need to cast, because on glibc systems, by default, the second argument is
                                                  struct timezone *.  */
_GL_CXXALIAS_SYS_CAST (gettimeofday, int,
                       (struct timeval *restrict, void *restrict));
#  endif
_GL_CXXALIASWARN (gettimeofday);
# elif defined GNULIB_POSIXCHECK
#  undef gettimeofday
#  if HAVE_RAW_DECL_GETTIMEOFDAY
_GL_WARN_ON_USE (gettimeofday, "gettimeofday is unportable - "
                 "use gnulib module gettimeofday for portability");
#  endif
# endif

/* Hide some function declarations from <winsock2.h>.  */

# if defined _MSC_VER && @HAVE_WINSOCK2_H@
#  if !defined _@GUARD_PREFIX@_UNISTD_H
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef close
#    define close close_used_without_including_unistd_h
#   else
     _GL_WARN_ON_USE (close,
                      "close() used without including <unistd.h>");
#   endif
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef gethostname
#    define gethostname gethostname_used_without_including_unistd_h
#   else
     _GL_WARN_ON_USE (gethostname,
                      "gethostname() used without including <unistd.h>");
#   endif
#  endif
#  if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef socket
#    define socket              socket_used_without_including_sys_socket_h
#    undef connect
#    define connect             connect_used_without_including_sys_socket_h
#    undef accept
#    define accept              accept_used_without_including_sys_socket_h
#    undef bind
#    define bind                bind_used_without_including_sys_socket_h
#    undef getpeername
#    define getpeername         getpeername_used_without_including_sys_socket_h
#    undef getsockname
#    define getsockname         getsockname_used_without_including_sys_socket_h
#    undef getsockopt
#    define getsockopt          getsockopt_used_without_including_sys_socket_h
#    undef listen
#    define listen              listen_used_without_including_sys_socket_h
#    undef recv
#    define recv                recv_used_without_including_sys_socket_h
#    undef send
#    define send                send_used_without_including_sys_socket_h
#    undef recvfrom
#    define recvfrom            recvfrom_used_without_including_sys_socket_h
#    undef sendto
#    define sendto              sendto_used_without_including_sys_socket_h
#    undef setsockopt
#    define setsockopt          setsockopt_used_without_including_sys_socket_h
#    undef shutdown
#    define shutdown            shutdown_used_without_including_sys_socket_h
#   else
     _GL_WARN_ON_USE (socket,
                      "socket() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (connect,
                      "connect() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (accept,
                      "accept() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (bind,
                      "bind() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (getpeername,
                      "getpeername() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (getsockname,
                      "getsockname() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (getsockopt,
                      "getsockopt() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (listen,
                      "listen() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (recv,
                      "recv() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (send,
                      "send() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (recvfrom,
                      "recvfrom() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (sendto,
                      "sendto() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (setsockopt,
                      "setsockopt() used without including <sys/socket.h>");
     _GL_WARN_ON_USE (shutdown,
                      "shutdown() used without including <sys/socket.h>");
#   endif
#  endif
#  if !defined _@GUARD_PREFIX@_SYS_SELECT_H
#   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#    undef select
#    define select select_used_without_including_sys_select_h
#   else
     _GL_WARN_ON_USE (select,
                      "select() used without including <sys/select.h>");
#   endif
#  endif
# endif

#endif /* _@GUARD_PREFIX@_SYS_TIME_H */