contrib/cvs-1.12/lib/gettime.c

   1 /* gettime -- get the system clock
   2    Copyright (C) 2002, 2004, 2005 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 2, 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, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 /* Written by Paul Eggert.  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #include "timespec.h"
  25
  26 /* Get the system time into *TS.  */
  27
  28 void
  29 gettime (struct timespec *ts)
  30 {
  31 #if HAVE_NANOTIME
  32   nanotime (ts);
  33 #else
  34
  35 # if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME
  36   if (clock_gettime (CLOCK_REALTIME, ts) == 0)
  37     return;
  38 # endif
  39
  40 # if HAVE_GETTIMEOFDAY
  41   {
  42     struct timeval tv;
  43     gettimeofday (&tv, NULL);
  44     ts->tv_sec = tv.tv_sec;
  45     ts->tv_nsec = tv.tv_usec * 1000;
  46   }
  47 # else
  48   ts->tv_sec = time (NULL);
  49   ts->tv_nsec = 0;
  50 # endif
  51
  52 #endif
  53 }