mirror of https://github.com/mpv-player/mpv
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* precise timer routines for Linux/UNIX
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* copyright (C) LGB & A'rpi/ASTRAL
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*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <time.h>
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#include "common/common.h"
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#include "timer.h"
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static clockid_t clk_id;
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void mp_sleep_ns(int64_t ns)
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{
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if (ns < 0)
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return;
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struct timespec ts;
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ts.tv_sec = ns / MP_TIME_S_TO_NS(1);
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ts.tv_nsec = ns % MP_TIME_S_TO_NS(1);
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nanosleep(&ts, NULL);
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}
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uint64_t mp_raw_time_ns(void)
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{
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struct timespec tp = {0};
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clock_gettime(clk_id, &tp);
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return MP_TIME_S_TO_NS(tp.tv_sec) + tp.tv_nsec;
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}
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void mp_raw_time_init(void)
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{
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static const clockid_t clock_ids[] = {
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#ifdef CLOCK_MONOTONIC_RAW
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CLOCK_MONOTONIC_RAW,
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#endif
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CLOCK_MONOTONIC,
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};
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struct timespec tp;
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for (int i = 0; i < MP_ARRAY_SIZE(clock_ids); ++i) {
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clk_id = clock_ids[i];
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if (!clock_gettime(clk_id, &tp))
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return;
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}
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fputs("No clock source available!\n", stderr);
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abort();
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}
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