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Diffstat (limited to 'media/ffvpx/libavutil/thread.h')
| -rw-r--r-- | media/ffvpx/libavutil/thread.h | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/thread.h b/media/ffvpx/libavutil/thread.h new file mode 100644 index 0000000000..2ded498c89 --- /dev/null +++ b/media/ffvpx/libavutil/thread.h @@ -0,0 +1,223 @@ +/* + * 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_PRCTL +#include <sys/prctl.h> +#endif + +#include "error.h" + +#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS + +#if HAVE_PTHREADS +#include <pthread.h> + +#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1 + +#include <stdlib.h> + +#include "log.h" +#include "macros.h" + +#define ASSERT_PTHREAD_ABORT(func, ret) do { \ + char errbuf[AV_ERROR_MAX_STRING_SIZE] = ""; \ + av_log(NULL, AV_LOG_FATAL, AV_STRINGIFY(func) \ + " failed with error: %s\n", \ + av_make_error_string(errbuf, AV_ERROR_MAX_STRING_SIZE, \ + AVERROR(ret))); \ + abort(); \ +} while (0) + +#define ASSERT_PTHREAD_NORET(func, ...) do { \ + int ret = func(__VA_ARGS__); \ + if (ret) \ + ASSERT_PTHREAD_ABORT(func, ret); \ +} 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_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, + const struct timespec *abstime) +{ + int ret = pthread_cond_timedwait(cond, mutex, abstime); + if (ret && ret != ETIMEDOUT) + ASSERT_PTHREAD_ABORT(pthread_cond_timedwait, ret); + return ret; +} + +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_cond_timedwait strict_pthread_cond_timedwait +#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 AV_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER + +#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 AVCond pthread_cond_t + +#define ff_cond_init pthread_cond_init +#define ff_cond_destroy pthread_cond_destroy +#define ff_cond_signal pthread_cond_signal +#define ff_cond_broadcast pthread_cond_broadcast +#define ff_cond_wait pthread_cond_wait +#define ff_cond_timedwait pthread_cond_timedwait + +#define AVOnce pthread_once_t +#define AV_ONCE_INIT PTHREAD_ONCE_INIT + +#define ff_thread_once(control, routine) pthread_once(control, routine) + +#else + +#define AVMutex char +#define AV_MUTEX_INITIALIZER 0 + +static inline int ff_mutex_init(AVMutex *mutex, const void *attr){ return 0; } +static inline int ff_mutex_lock(AVMutex *mutex){ return 0; } +static inline int ff_mutex_unlock(AVMutex *mutex){ return 0; } +static inline int ff_mutex_destroy(AVMutex *mutex){ return 0; } + +#define AVCond char + +static inline int ff_cond_init(AVCond *cond, const void *attr){ return 0; } +static inline int ff_cond_destroy(AVCond *cond){ return 0; } +static inline int ff_cond_signal(AVCond *cond){ return 0; } +static inline int ff_cond_broadcast(AVCond *cond){ return 0; } +static inline int ff_cond_wait(AVCond *cond, AVMutex *mutex){ return 0; } +static inline int ff_cond_timedwait(AVCond *cond, AVMutex *mutex, + const void *abstime){ return 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 + +static inline int ff_thread_setname(const char *name) +{ +#if HAVE_PRCTL + return AVERROR(prctl(PR_SET_NAME, name)); +#endif + + return AVERROR(ENOSYS); +} + +#endif /* AVUTIL_THREAD_H */ |