PTHREAD_MUTEX_UNLOCK(3) BSD Programmer's Manual PTHREAD_MUTEX_UNLOCK(3)
pthread_mutex_unlock - unlock a mutex
#include <pthread.h> int pthread_mutex_unlock(pthread_mutex_t *mutex);
If the current thread holds the lock on mutex, then the pthread_mutex_unlock() function unlocks mutex.
If successful, pthread_mutex_unlock() will return zero, otherwise an er- ror number will be returned to indicate the error.
pthread_mutex_unlock() will fail if: [EINVAL] The value specified by mutex is invalid. [EPERM] The current thread does not hold a lock on mutex.
pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3), pthread_mutex_trylock(3)
pthread_mutex_unlock() conforms to ISO/IEC 9945-1:1996 ("POSIX"). MirOS BSD #10-current July 30, 1998 1
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