/* * precise timer routines for Linux/UNIX * copyright (C) LGB & A'rpi/ASTRAL * * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv.  If not, see <http://www.gnu.org/licenses/>. */ #include <errno.h>#include <stdlib.h>#include <time.h> #include "common/common.h"#include "timer.h" static clockid_t clk_id; void mp_sleep_ns(int64_t ns){    if (ns < 0)        return;    struct timespec ts;    ts.tv_sec  = ns / MP_TIME_S_TO_NS(1);    ts.tv_nsec = ns % MP_TIME_S_TO_NS(1);    nanosleep(&ts, NULL);} uint64_t mp_raw_time_ns(void){    struct timespec tp = {0};    clock_gettime(clk_id, &tp);    return MP_TIME_S_TO_NS(tp.tv_sec) + tp.tv_nsec;} void mp_raw_time_init(void){    static const clockid_t clock_ids[] = {#ifdef CLOCK_MONOTONIC_RAW        CLOCK_MONOTONIC_RAW,#endif        CLOCK_MONOTONIC,    };     struct timespec tp;    for (int i = 0; i < MP_ARRAY_SIZE(clock_ids); ++i) {        clk_id = clock_ids[i];        if (!clock_gettime(clk_id, &tp))            return;    }    fputs("No clock source available!\n", stderr);    abort();}