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/*
* 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 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 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 */
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