Query: pthread_mutex_unlock
OS: mojave
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
PTHREAD_MUTEX_UNLOCK(3) BSD Library Functions Manual PTHREAD_MUTEX_UNLOCK(3)NAMEpthread_mutex_unlock -- unlock a mutexSYNOPSIS#include <pthread.h> int pthread_mutex_unlock(pthread_mutex_t *mutex);DESCRIPTIONIf the current thread holds the lock on mutex, then the pthread_mutex_unlock() function unlocks mutex. Calling pthread_mutex_unlock() with a mutex that the calling thread does not hold will result in undefined behavior.RETURN VALUESIf successful, pthread_mutex_unlock() will return zero, otherwise an error number will be returned to indicate the error.ERRORSThe pthread_mutex_unlock() function will fail if: [EINVAL] The value specified by mutex is invalid. [EPERM] The current thread does not hold a lock on mutex.SEE ALSOpthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3), pthread_mutex_trylock(3)STANDARDSThe pthread_mutex_unlock() function conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').BSDJuly 30, 1998 BSD