kc3-lang/gnulib/lib/gettime.c

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• Hash : 5661ab9d
  Author :
  Date : 2007-01-18T08:33:34
  

  * MODULES.html.sh (Support for systems lacking POSIX:2001): New
  module sys_time.
  * lib/gethrxtime.c: Include <sys/time.h>, since we can no longer
  assume timespec.h defines struct timeval.
  * lib/settime.c: Likewise.
  * lib/utimens.c: Likewise.
  * lib/gettime.c (gettime): Remove test against HAVE_GETTIMEOFDAY,
  since we now assume the gettimeofday module.
  * lib/tempname.c (__gen_tempname): Likewise.
  * lib/gettimeofday.h: Remove.
  * lib/gettimeofday.c: Include <sys/time.h> instead of "gettimeofday.h".
  Don't include <sys/types.h> and <stdlib.h>; shouldn't be needed.
  Include <time.h>, for 'time()'.
  (localtime_buffer_addr): Also use this workaround if
  TZSET_CLOBBERS_LOCALTIME.  Set to a dummy static variable by default,
  to simplify the uses.  All uses changed.
  (localtime, gmtime, tzset, gettimeofday): Reformat slightly so
  that #undef is inside {}, and 'const' follows type name consistently.
  (tzset): Define replacement only if TZSET_CLOBBERS_LOCALTIME.
  (gettimeofday): Do not use the maximum possible value for
  tv->tv_usec, since that might break usages other than ls.c.
  Instead, we'll leave ls.c alone.  This undoes today's patch
  by Bruno.  Add a compile-time warning for 1s-clock resolution;
  we've never observed the problem but might as well keep the
  canary.
  * lib/nanosleep.c: Include timespec.h first, for interface check.
  * lib/nanosleep.c: Include <sys/time.h> unconditionally, since we
  now assume the sys_time module.
  * lib/tempname.c: Likewise.
  * lib/timespec.h: Likewise.
  * lib/nanosleep.c: Don't worry about TIME_WITH_SYS_TIME; no longer
  needed.
  * lib/strftime.c: Likewise.
  * lib/timespec.h: Likewise.
  * lib/posixtm.c: Include posixtm.h first, for interface check.
  Don't worry about TM_IN_SYS_TIME; that's wayyy obsolete.
  * lib/posixtm.h: Include stdbool.h and time.h, for proper interface.
  * lib/strftime.c: Don't include <sys/types.h>; shouldn't be needed.
  * lib/sys_time_.h: New file.
  * lib/timespec.h (struct timespec): Use long int, not long.
  * m4/gettimeofday.m4 (gl_FUNC_GETTIMEOFDAY):
  (gl_FUNC_GETTIMEOFDAY_CLOBBER, gl_PREREQ_GETTIMEOFDAY):
  Remove obsolescent call to AC_HEADER_TIME.
  * m4/mktime.m4 (AC_FUNC_MKTIME): Likewise.
  * m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Likewise.
  * m4/strftime.m4 (gl_FUNC_STRFTIME): Likewise.
  * m4/timespec.m4 (gl_TIMESPEC, gl_CHECK_TYPE_STRUCT_TIMESPEC):
  Likewise.
  * m4/tzset.m4 (gl_FUNC_TZSET_CLOBBER): Likewise.
  * m4/utimbuf.m4 (gl_CHECK_TYPE_STRUCT_UTIMBUF): Likewise.
  * m4/gettimeofday.m4 (gl_FUNC_GETTIMEOFDAY): Move sys/time.h tests
  into the sys_time module.  Check for gettimeofday just once.
  Prefix our variables with gl_, not with ac_ or jm_.  Tighten test
  for gettimeofday signature to just check the signature.  Merely
  compile it, since linking doesn't test signature.  Improve test for
  whether gettimeofday.o is actually needed.
  (gl_FUNC_GETTIMEOFDAY_CLOBBER): Renamed from
  AC_FUNC_GETTIMEOFDAY_CLOBBER.  All uses changed.  Use
  AC_RUN_IFELSE rather than AC_TRY_RUN.  If clobbering, set
  and define GETTIMEOFDAY_CLOBBERS_LOCALTIME.
  (gl_GETTIMEOFDAY_REPLACE_LOCALTIME): Don't define
  GETTIMEOFDAY_CLOBBERS_LOCALTIME; that's gl_FUNC_GETTIMEOFDAY_CLOBBER's
  job.  Don't define tzset; that's gl_FUNC_TZSET_CLOBBER's job.
  * m4/mktime.m4 (AC_FUNC_MKTIME): Just include <time.h> rather
  than worrying about sys/time.h.
  * m4/nanosleep.m4 (gl_FUNC_NANOSLEEP):
  Don't bother worrying about TIME_WITH_SYS_TIME.
  * m4/stat-time.m4 (gl_STAT_TIME): Likewise.
  * m4/posixtm.m4 (gl_POSIXTM): Remove obsolescent call to AC_STRUCT_TM.
  * m4/sys_time_h.m4: New file.
  * m4/tzset.m4 (gl_FUNC_TZSET_CLOBBER): Require gl_HEADER_SYS_TIME_H.
  Don't include sys/time.h.  Return from main rather than exiting.
  Define TZSET_CLOBBERS_LOCALTIME, for consistency with other names;
  all uses changed.
  * modules/gethrxtime (Depends-on): Add sys_time.
  * modules/gettime (Depends-on): Likewise.
  * modules/gettimeofday (Depends-on): Likewise.
  * modules/nanosleep (Depends-on): Likewise.
  * modules/settime (Depends-on): Likewise.
  * modules/tempname (Depends-on): Likewise.
  * modules/utimens (Depends-on): Likewise.
  * modules/gettimeofday (Files): Remove lib/gettimeofday.h.
  (Include:) Change back to <sys/time.h>.
  (Maintainer:) Add self.
  * modules/sys_time: New file.
  * modules/tempname (Depends-on): Add gettimeofday.
  * tests/test-gettimeofday.c: Include <sys/time.h>
  rather than gettimeofday.h.
  

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• lib/gettime.c

• /* gettime -- get the system clock
  
     Copyright (C) 2002, 2004, 2005, 2006, 2007 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 2, 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, write to the Free Software Foundation,
     Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  
  /* Written by Paul Eggert.  */
  
  #include <config.h>
  
  #include "timespec.h"
  
  #include <sys/time.h>
  
  /* Get the system time into *TS.  */
  
  void
  gettime (struct timespec *ts)
  {
  #if HAVE_NANOTIME
    nanotime (ts);
  #else
  
  # if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME
    if (clock_gettime (CLOCK_REALTIME, ts) == 0)
      return;
  # endif
  
    {
      struct timeval tv;
      gettimeofday (&tv, NULL);
      ts->tv_sec = tv.tv_sec;
      ts->tv_nsec = tv.tv_usec * 1000;
    }
  
  #endif
  }
  

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