mirror of
https://github.com/mpv-player/mpv
synced 2024-12-18 04:45:33 +00:00
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*
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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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <time.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include "threads.h"
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static void get_pthread_time(struct timespec *out_ts)
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{
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#if defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0
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clock_gettime(CLOCK_REALTIME, out_ts);
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#else
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// OSX
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struct timeval tv;
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gettimeofday(&tv, NULL);
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out_ts->tv_sec = tv.tv_sec;
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out_ts->tv_nsec = tv.tv_usec * 1000UL;
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#endif
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}
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static void timespec_add_seconds(struct timespec *ts, double seconds)
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{
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unsigned long secs = (int)seconds;
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unsigned long nsecs = (seconds - secs) * 1000000000UL;
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if (nsecs + ts->tv_nsec >= 1000000000UL) {
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secs += 1;
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nsecs -= 1000000000UL;
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}
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ts->tv_sec += secs;
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ts->tv_nsec += nsecs;
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}
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// Call pthread_cond_timedwait() with a relative timeout in seconds
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int mpthread_cond_timed_wait(pthread_cond_t *cond, pthread_mutex_t *mutex,
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double timeout)
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{
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struct timespec ts;
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get_pthread_time(&ts);
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timespec_add_seconds(&ts, timeout);
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return pthread_cond_timedwait(cond, mutex, &ts);
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}
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// Helper to reduce boiler plate.
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int mpthread_mutex_init_recursive(pthread_mutex_t *mutex)
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{
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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int r = pthread_mutex_init(mutex, &attr);
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pthread_mutexattr_destroy(&attr);
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return r;
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}
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