1 

12 typedef struct pthread_mutex pthread_mutex_t;

13 typedef struct pthread_mutexattr pthread_mutexattr_t;

14 

21 extern int pthread_mutex_destroy(pthread_mutex_t *mutex);

22 

30 extern int pthread_mutex_init(pthread_mutex_t *mutex,

31  const pthread_mutexattr_t *attr);

32 

38 extern int pthread_mutex_lock(pthread_mutex_t *mutex);

39 

45 extern int pthread_mutex_trylock(pthread_mutex_t *mutex);

46 

52 extern int pthread_mutex_unlock(pthread_mutex_t *mutex);

53