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glibc  2.9
time.c
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00001 /* Copyright (C) 1991,92,97,2001,02 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <stddef.h>         /* For NULL.  */
00020 #include <time.h>
00021 #include <sys/time.h>
00022 
00023 
00024 /* Return the current time as a `time_t' and also put it in *T if T is
00025    not NULL.  Time is represented as seconds from Jan 1 00:00:00 1970.  */
00026 time_t
00027 time (t)
00028      time_t *t;
00029 {
00030   struct timeval tv;
00031   time_t result;
00032 
00033   if (__gettimeofday (&tv, (struct timezone *) NULL))
00034     result = (time_t) -1;
00035   else
00036     result = (time_t) tv.tv_sec;
00037 
00038   if (t != NULL)
00039     *t = result;
00040   return result;
00041 }
00042 libc_hidden_def (time)