#include <pthread.h> int
pthread_rwlock_unlock (pthread_rwlock_t *lock);
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
Fa lock
is not held by the calling thread.
ERRORS
The
pthread_rwlock_unlock ();
function may fail if:
Bq Er EINVAL
The value specified by
Fa lock
is invalid.
Bq Er EPERM
The current thread does not own the read/write lock.
SEE ALSO
pthread_rwlock_rdlock3,
pthread_rwlock_wrlock3
STANDARDS
The
pthread_rwlock_unlock ();
function is expected to conform to
St -susv2 .
HISTORY
The
pthread_rwlock_unlock ();
function first appeared in
Fx 3.0 .
