/* * 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 */