pthread_mutex_unlock(3) BSD Library Functions Manual pthread_mutex_unlock(3)
NAME
pthread_mutex_unlock -- unlock a mutex
SYNOPSIS
#include <pthread.h>
int
pthread_mutex_unlock(pthread_mutex_t *mutex);
DESCRIPTION
If 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 VALUES
If successful, pthread_mutex_unlock() will return zero. Otherwise, an
error number will be returned to indicate the error.
ERRORS
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.
SEE ALSO
pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3),
pthread_mutex_trylock(3)
STANDARDS
pthread_mutex_unlock() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').
BSD July 30, 1998 BSD
Mac OS X 10.8 - Generated Thu Aug 30 05:57:17 CDT 2012