time.c

   1 /* Copyright (C) 2007 Keith Rarick and Philotic Inc.
   2  * Copyright 2011 Keith Rarick
   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 3 of the License, or
   7  * (at your option) 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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdint.h>
  19 #include <stdlib.h>
  20 #include <sys/time.h>
  21 #include "dat.h"
  22
  23 int64
  24 nanoseconds(void)
  25 {
  26     int r;
  27     struct timeval tv;
  28
  29     r = gettimeofday(&tv, 0);
  30     if (r != 0) return warnx("gettimeofday"), -1; // can't happen
  31
  32     return ((int64)tv.tv_sec)*1000000000 + ((int64)tv.tv_usec)*1000;
  33 }