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https://git.ffmpeg.org/ffmpeg.git
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67d8eabdbb
USE_ATOMICS is only set if there is no thread implementation enabled, in which case you can't expect any lock mechanism from FFmpeg. This is also conflicting with the incoming use of stdatomic.
169 lines
5.2 KiB
C
169 lines
5.2 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 GNU
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* 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// This header should only be used to simplify code where
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// threading is optional, not as a generic threading abstraction.
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#ifndef AVUTIL_THREAD_H
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#define AVUTIL_THREAD_H
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#include "config.h"
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#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
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#if HAVE_PTHREADS
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#include <pthread.h>
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#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
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#include "log.h"
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#define ASSERT_PTHREAD_NORET(func, ...) do { \
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int ret = func(__VA_ARGS__); \
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if (ret) { \
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av_log(NULL, AV_LOG_FATAL, AV_STRINGIFY(func) \
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" failed with error: %s\n", av_err2str(AVERROR(ret))); \
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abort(); \
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} \
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} while (0)
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#define ASSERT_PTHREAD(func, ...) do { \
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ASSERT_PTHREAD_NORET(func, __VA_ARGS__); \
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return 0; \
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} while (0)
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static inline int strict_pthread_join(pthread_t thread, void **value_ptr)
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{
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ASSERT_PTHREAD(pthread_join, thread, value_ptr);
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}
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static inline int strict_pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
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{
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if (attr) {
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ASSERT_PTHREAD_NORET(pthread_mutex_init, mutex, attr);
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} else {
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pthread_mutexattr_t local_attr;
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ASSERT_PTHREAD_NORET(pthread_mutexattr_init, &local_attr);
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ASSERT_PTHREAD_NORET(pthread_mutexattr_settype, &local_attr, PTHREAD_MUTEX_ERRORCHECK);
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ASSERT_PTHREAD_NORET(pthread_mutex_init, mutex, &local_attr);
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ASSERT_PTHREAD_NORET(pthread_mutexattr_destroy, &local_attr);
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}
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return 0;
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}
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static inline int strict_pthread_mutex_destroy(pthread_mutex_t *mutex)
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{
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ASSERT_PTHREAD(pthread_mutex_destroy, mutex);
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}
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static inline int strict_pthread_mutex_lock(pthread_mutex_t *mutex)
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{
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ASSERT_PTHREAD(pthread_mutex_lock, mutex);
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}
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static inline int strict_pthread_mutex_unlock(pthread_mutex_t *mutex)
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{
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ASSERT_PTHREAD(pthread_mutex_unlock, mutex);
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}
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static inline int strict_pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
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{
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ASSERT_PTHREAD(pthread_cond_init, cond, attr);
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}
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static inline int strict_pthread_cond_destroy(pthread_cond_t *cond)
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{
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ASSERT_PTHREAD(pthread_cond_destroy, cond);
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}
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static inline int strict_pthread_cond_signal(pthread_cond_t *cond)
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{
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ASSERT_PTHREAD(pthread_cond_signal, cond);
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}
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static inline int strict_pthread_cond_broadcast(pthread_cond_t *cond)
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{
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ASSERT_PTHREAD(pthread_cond_broadcast, cond);
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}
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static inline int strict_pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
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{
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ASSERT_PTHREAD(pthread_cond_wait, cond, mutex);
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}
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static inline int strict_pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
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{
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ASSERT_PTHREAD(pthread_once, once_control, init_routine);
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}
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#define pthread_join strict_pthread_join
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#define pthread_mutex_init strict_pthread_mutex_init
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#define pthread_mutex_destroy strict_pthread_mutex_destroy
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#define pthread_mutex_lock strict_pthread_mutex_lock
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#define pthread_mutex_unlock strict_pthread_mutex_unlock
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#define pthread_cond_init strict_pthread_cond_init
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#define pthread_cond_destroy strict_pthread_cond_destroy
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#define pthread_cond_signal strict_pthread_cond_signal
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#define pthread_cond_broadcast strict_pthread_cond_broadcast
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#define pthread_cond_wait strict_pthread_cond_wait
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#define pthread_once strict_pthread_once
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#endif
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#elif HAVE_OS2THREADS
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#include "compat/os2threads.h"
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#else
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#include "compat/w32pthreads.h"
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#endif
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#define AVMutex pthread_mutex_t
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#define ff_mutex_init pthread_mutex_init
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#define ff_mutex_lock pthread_mutex_lock
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#define ff_mutex_unlock pthread_mutex_unlock
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#define ff_mutex_destroy pthread_mutex_destroy
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#define AVOnce pthread_once_t
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#define AV_ONCE_INIT PTHREAD_ONCE_INIT
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#define ff_thread_once(control, routine) pthread_once(control, routine)
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#else
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#define AVMutex char
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#define ff_mutex_init(mutex, attr) (0)
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#define ff_mutex_lock(mutex) (0)
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#define ff_mutex_unlock(mutex) (0)
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#define ff_mutex_destroy(mutex) (0)
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#define AVOnce char
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#define AV_ONCE_INIT 0
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static inline int ff_thread_once(char *control, void (*routine)(void))
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{
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if (!*control) {
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routine();
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*control = 1;
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}
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return 0;
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}
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#endif
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#endif /* AVUTIL_THREAD_H */
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