| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| // This header should only be used to simplify code where |
| // threading is optional, not as a generic threading abstraction. |
| |
| #ifndef AVUTIL_THREAD_H |
| #define AVUTIL_THREAD_H |
| |
| #include "config.h" |
| |
| #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS |
| |
| #define USE_ATOMICS 0 |
| |
| #if HAVE_PTHREADS |
| #include <pthread.h> |
| |
| #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1 |
| |
| #include "log.h" |
| |
| #define ASSERT_PTHREAD_NORET(func, ...) do { \ |
| int ret = func(__VA_ARGS__); \ |
| if (ret) { \ |
| av_log(NULL, AV_LOG_FATAL, AV_STRINGIFY(func) \ |
| " failed with error: %s\n", av_err2str(AVERROR(ret))); \ |
| abort(); \ |
| } \ |
| } while (0) |
| |
| #define ASSERT_PTHREAD(func, ...) do { \ |
| ASSERT_PTHREAD_NORET(func, __VA_ARGS__); \ |
| return 0; \ |
| } while (0) |
| |
| static inline int strict_pthread_join(pthread_t thread, void **value_ptr) |
| { |
| ASSERT_PTHREAD(pthread_join, thread, value_ptr); |
| } |
| |
| static inline int strict_pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr) |
| { |
| if (attr) { |
| ASSERT_PTHREAD_NORET(pthread_mutex_init, mutex, attr); |
| } else { |
| pthread_mutexattr_t local_attr; |
| ASSERT_PTHREAD_NORET(pthread_mutexattr_init, &local_attr); |
| ASSERT_PTHREAD_NORET(pthread_mutexattr_settype, &local_attr, PTHREAD_MUTEX_ERRORCHECK); |
| ASSERT_PTHREAD_NORET(pthread_mutex_init, mutex, &local_attr); |
| ASSERT_PTHREAD_NORET(pthread_mutexattr_destroy, &local_attr); |
| } |
| return 0; |
| } |
| |
| static inline int strict_pthread_mutex_destroy(pthread_mutex_t *mutex) |
| { |
| ASSERT_PTHREAD(pthread_mutex_destroy, mutex); |
| } |
| |
| static inline int strict_pthread_mutex_lock(pthread_mutex_t *mutex) |
| { |
| ASSERT_PTHREAD(pthread_mutex_lock, mutex); |
| } |
| |
| static inline int strict_pthread_mutex_unlock(pthread_mutex_t *mutex) |
| { |
| ASSERT_PTHREAD(pthread_mutex_unlock, mutex); |
| } |
| |
| static inline int strict_pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr) |
| { |
| ASSERT_PTHREAD(pthread_cond_init, cond, attr); |
| } |
| |
| static inline int strict_pthread_cond_destroy(pthread_cond_t *cond) |
| { |
| ASSERT_PTHREAD(pthread_cond_destroy, cond); |
| } |
| |
| static inline int strict_pthread_cond_signal(pthread_cond_t *cond) |
| { |
| ASSERT_PTHREAD(pthread_cond_signal, cond); |
| } |
| |
| static inline int strict_pthread_cond_broadcast(pthread_cond_t *cond) |
| { |
| ASSERT_PTHREAD(pthread_cond_broadcast, cond); |
| } |
| |
| static inline int strict_pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex) |
| { |
| ASSERT_PTHREAD(pthread_cond_wait, cond, mutex); |
| } |
| |
| static inline int strict_pthread_once(pthread_once_t *once_control, void (*init_routine)(void)) |
| { |
| ASSERT_PTHREAD(pthread_once, once_control, init_routine); |
| } |
| |
| #define pthread_join strict_pthread_join |
| #define pthread_mutex_init strict_pthread_mutex_init |
| #define pthread_mutex_destroy strict_pthread_mutex_destroy |
| #define pthread_mutex_lock strict_pthread_mutex_lock |
| #define pthread_mutex_unlock strict_pthread_mutex_unlock |
| #define pthread_cond_init strict_pthread_cond_init |
| #define pthread_cond_destroy strict_pthread_cond_destroy |
| #define pthread_cond_signal strict_pthread_cond_signal |
| #define pthread_cond_broadcast strict_pthread_cond_broadcast |
| #define pthread_cond_wait strict_pthread_cond_wait |
| #define pthread_once strict_pthread_once |
| #endif |
| |
| #elif HAVE_OS2THREADS |
| #include "compat/os2threads.h" |
| #else |
| #include "compat/w32pthreads.h" |
| #endif |
| |
| #define AVMutex pthread_mutex_t |
| |
| #define ff_mutex_init pthread_mutex_init |
| #define ff_mutex_lock pthread_mutex_lock |
| #define ff_mutex_unlock pthread_mutex_unlock |
| #define ff_mutex_destroy pthread_mutex_destroy |
| |
| #define AVOnce pthread_once_t |
| #define AV_ONCE_INIT PTHREAD_ONCE_INIT |
| |
| #define ff_thread_once(control, routine) pthread_once(control, routine) |
| |
| #else |
| |
| #define USE_ATOMICS 1 |
| |
| #define AVMutex char |
| |
| #define ff_mutex_init(mutex, attr) (0) |
| #define ff_mutex_lock(mutex) (0) |
| #define ff_mutex_unlock(mutex) (0) |
| #define ff_mutex_destroy(mutex) (0) |
| |
| #define AVOnce char |
| #define AV_ONCE_INIT 0 |
| |
| static inline int ff_thread_once(char *control, void (*routine)(void)) |
| { |
| if (!*control) { |
| routine(); |
| *control = 1; |
| } |
| return 0; |
| } |
| |
| #endif |
| |
| #endif /* AVUTIL_THREAD_H */ |