sysdeps/posix/time.c

   1 /* Copyright (C) 1991-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <stddef.h>             /* For NULL.  */
  19 #include <time.h>
  20 #include <sys/time.h>
  21
  22
  23 /* Return the current time as a `time_t' and also put it in *T if T is
  24    not NULL.  Time is represented as seconds from Jan 1 00:00:00 1970.  */
  25 time_t
  26 time (t)
  27      time_t *t;
  28 {
  29   struct timeval tv;
  30   time_t result;
  31
  32   if (__gettimeofday (&tv, (struct timezone *) NULL))
  33     result = (time_t) -1;
  34   else
  35     result = (time_t) tv.tv_sec;
  36
  37   if (t != NULL)
  38     *t = result;
  39   return result;
  40 }
  41 libc_hidden_def (time)