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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. // This header should only be used to simplify code where
  20. // threading is optional, not as a generic threading abstraction.
  21.  
  22. #ifndef AVUTIL_THREAD_H
  23. #define AVUTIL_THREAD_H
  24.  
  25. #include "config.h"
  26.  
  27. #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
  28.  
  29. #define USE_ATOMICS 0
  30.  
  31. #if HAVE_PTHREADS
  32. #include <pthread.h>
  33. #elif HAVE_OS2THREADS
  34. #include "compat/os2threads.h"
  35. #else
  36. #include "compat/w32pthreads.h"
  37. #endif
  38.  
  39. #define AVMutex pthread_mutex_t
  40.  
  41. #define ff_mutex_init    pthread_mutex_init
  42. #define ff_mutex_lock    pthread_mutex_lock
  43. #define ff_mutex_unlock  pthread_mutex_unlock
  44. #define ff_mutex_destroy pthread_mutex_destroy
  45.  
  46. #else
  47.  
  48. #define USE_ATOMICS 1
  49.  
  50. #define AVMutex char
  51.  
  52. #define ff_mutex_init(mutex, attr) (0)
  53. #define ff_mutex_lock(mutex) (0)
  54. #define ff_mutex_unlock(mutex) (0)
  55. #define ff_mutex_destroy(mutex) (0)
  56.  
  57. #endif
  58.  
  59. #endif /* AVUTIL_THREAD_H */
  60.