pthread_rwlock_unlock(3) BSD Library Functions Manual pthread_rwlock_unlock(3)
NAME
pthread_rwlock_unlock -- release a read/write lock
SYNOPSIS
#include <pthread.h>
int
pthread_rwlock_unlock(pthread_rwlock_t *rwlock);
DESCRIPTION
The pthread_rwlock_unlock() function is used to release the read/write
lock previously obtained by pthread_rwlock_rdlock(),
pthread_rwlock_wrlock(), pthread_rwlock_tryrdlock(), or
pthread_rwlock_trywrlock().
RETURN VALUES
If successful, the pthread_rwlock_unlock() function will return zero.
Otherwise, an error number will be returned to indicate the error.
The results are undefined if rwlock is not held by the calling thread.
SEE ALSO
pthread_rwlock_rdlock(3), pthread_rwlock_wrlock(3)
STANDARDS
The pthread_rwlock_unlock() function is expected to conform to Version 2
of the Single UNIX Specification (``SUSv2'').
ERRORS
The pthread_rwlock_unlock() function may fail if:
[EINVAL] The value specified by rwlock is invalid.
[EPERM] The current thread does not own the read/write lock.
HISTORY
The pthread_rwlock_unlock() function first appeared in FreeBSD 3.0.
BSD August 4, 1998 BSD
Mac OS X 10.8 - Generated Thu Aug 30 10:03:19 CDT 2012