.\" Copyright (c) 1998 Alex Nash
.\" All rights reserved.
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.\" $FreeBSD$
.\"
.Dd August 4, 1998
.Dt PTHREAD_RWLOCK_DESTROY 3
.Os
.Sh NAME
.Nm pthread_rwlock_destroy
.Nd destroy a read/write lock
.Sh LIBRARY
.Lb libpthread
.Sh SYNOPSIS
.In pthread.h
.Ft int
.Fn pthread_rwlock_destroy "pthread_rwlock_t *lock"
.Sh DESCRIPTION
The
.Fn pthread_rwlock_destroy
function is used to destroy a read/write lock previously created with
.Fn pthread_rwlock_init .
.Sh RETURN VALUES
If successful, the
.Fn pthread_rwlock_destroy
function will return zero.
Otherwise an error number will be returned
to indicate the error.
.Sh ERRORS
The
.Fn pthread_rwlock_destroy
function will fail if:
.Bl -tag -width Er
.It Bq Er EPERM
The caller does not have the privilege to perform the operation.
.El
.Pp
The
.Fn pthread_rwlock_destroy
function may fail if:
.Bl -tag -width Er
.It Bq Er EBUSY
The system has detected an attempt to destroy the object referenced by
.Fa lock
while it is locked.
.It Bq Er EINVAL
The value specified by
.Fa lock
is invalid.
.El
.Sh SEE ALSO
.Xr pthread_rwlock_init 3
.Sh STANDARDS
The
.Fn pthread_rwlock_destroy
function is expected to conform to
.St -susv2 .
.Sh HISTORY
The
.Fn pthread_rwlock_destroy
function first appeared in
.Fx 3.0 .