/*

  * 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

 
 #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) {                                                          \

         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(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 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
 
 #endif /* AVUTIL_THREAD_H */