240 lines
7.6 KiB
C
240 lines
7.6 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_PRCTL
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#include <sys/prctl.h>
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#elif (HAVE_PTHREAD_SETNAME_NP || HAVE_PTHREAD_SET_NAME_NP) && HAVE_PTHREAD_NP_H
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#include <pthread_np.h>
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#endif
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#include "error.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 <stdlib.h>
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#include "log.h"
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#include "macros.h"
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#define ASSERT_PTHREAD_ABORT(func, ret) do { \
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char errbuf[AV_ERROR_MAX_STRING_SIZE] = ""; \
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av_log(NULL, AV_LOG_FATAL, AV_STRINGIFY(func) \
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" failed with error: %s\n", \
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av_make_error_string(errbuf, AV_ERROR_MAX_STRING_SIZE, \
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AVERROR(ret))); \
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abort(); \
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} while (0)
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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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ASSERT_PTHREAD_ABORT(func, ret); \
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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_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
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const struct timespec *abstime)
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{
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int ret = pthread_cond_timedwait(cond, mutex, abstime);
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if (ret && ret != ETIMEDOUT)
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ASSERT_PTHREAD_ABORT(pthread_cond_timedwait, ret);
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return ret;
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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_cond_timedwait strict_pthread_cond_timedwait
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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 AV_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
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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 AVCond pthread_cond_t
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#define ff_cond_init pthread_cond_init
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#define ff_cond_destroy pthread_cond_destroy
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#define ff_cond_signal pthread_cond_signal
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#define ff_cond_broadcast pthread_cond_broadcast
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#define ff_cond_wait pthread_cond_wait
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#define ff_cond_timedwait pthread_cond_timedwait
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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 AV_MUTEX_INITIALIZER 0
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static inline int ff_mutex_init(AVMutex *mutex, const void *attr){ return 0; }
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static inline int ff_mutex_lock(AVMutex *mutex){ return 0; }
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static inline int ff_mutex_unlock(AVMutex *mutex){ return 0; }
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static inline int ff_mutex_destroy(AVMutex *mutex){ return 0; }
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#define AVCond char
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static inline int ff_cond_init(AVCond *cond, const void *attr){ return 0; }
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static inline int ff_cond_destroy(AVCond *cond){ return 0; }
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static inline int ff_cond_signal(AVCond *cond){ return 0; }
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static inline int ff_cond_broadcast(AVCond *cond){ return 0; }
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static inline int ff_cond_wait(AVCond *cond, AVMutex *mutex){ return 0; }
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static inline int ff_cond_timedwait(AVCond *cond, AVMutex *mutex,
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const void *abstime){ return 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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static inline int ff_thread_setname(const char *name)
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{
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int ret = 0;
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#if HAVE_PRCTL
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ret = AVERROR(prctl(PR_SET_NAME, name));
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#elif HAVE_PTHREAD_SETNAME_NP
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#if defined(__APPLE__)
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ret = AVERROR(pthread_setname_np(name));
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#elif defined(__NetBSD__)
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ret = AVERROR(pthread_setname_np(pthread_self(), "%s", name));
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#else
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ret = AVERROR(pthread_setname_np(pthread_self(), name));
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#endif
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#elif HAVE_PTHREAD_SET_NAME_NP
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pthread_set_name_np(pthread_self(), name);
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#else
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ret = AVERROR(ENOSYS);
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#endif
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return ret;
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}
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#endif /* AVUTIL_THREAD_H */
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