/* * precise timer routines for Windows * * This file is part of MPlayer. * * MPlayer is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * MPlayer is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with MPlayer; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include <windows.h> #include <sys/time.h> #include <mmsystem.h> #include <stdlib.h> #include "timer.h" void mp_sleep_us(int64_t us) { if (us < 0) return; // Sleep(0) won't sleep for one clocktick as the unix usleep // instead it will only make the thread ready // it may take some time until it actually starts to run again if (us < 1000) us = 1000; Sleep(us / 1000); } uint64_t mp_raw_time_us(void) { struct timeval tv; gettimeofday(&tv,NULL); return tv.tv_sec * 1000000LL + tv.tv_usec; } static void restore_timer(void) { // The MSDN documents that begin/end "must" be matched. This satisfies // this requirement. timeEndPeriod(1); } void mp_raw_time_init(void) { timeBeginPeriod(1); // request 1ms timer resolution atexit(restore_timer); }