source/gles2glide64/src/Glide64/ticks.c

   1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   2  *   Copyright (C) 2011 yongzh (freeman.yong@gmail.com)                    *
   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 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, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
  18  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  19
  20 #include <time.h>
  21
  22 static struct timespec startTicks;
  23
  24 void ticksInitialize()
  25 {
  26         clock_gettime(CLOCK_MONOTONIC, &startTicks);
  27 }
  28
  29 unsigned int ticksGetTicks()
  30 {
  31         struct timespec now;
  32         clock_gettime(CLOCK_MONOTONIC, &now);
  33         return (now.tv_sec - startTicks.tv_sec) * 1000 +
  34                         (now.tv_nsec - startTicks.tv_nsec) / 1000000;
  35 }