1.\" Copyright (c) 1998 Alex Nash
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25.\" $FreeBSD: src/lib/libc_r/man/pthread_rwlock_destroy.3,v 1.3.2.3 2001/12/17 10:08:26 ru Exp $
26.\" $DragonFly: src/lib/libc_r/man/pthread_rwlock_destroy.3,v 1.3 2006/02/17 19:35:07 swildner Exp $
27.\"
28.Dd April 15, 2009
29.Dt PTHREAD_RWLOCK_DESTROY 3
30.Os
31.Sh NAME
32.Nm pthread_rwlock_destroy
33.Nd destroy a read/write lock
34.Sh LIBRARY
35.Lb libpthread
36.Sh SYNOPSIS
37.In pthread.h
38.Ft int
39.Fn pthread_rwlock_destroy "pthread_rwlock_t *lock"
40.Sh DESCRIPTION
41The
42.Fn pthread_rwlock_destroy
43function is used to destroy a read/write lock previously created with
44.Fn pthread_rwlock_init .
45.Sh RETURN VALUES
46If successful, the
47.Fn pthread_rwlock_destroy
48function will return zero.  Otherwise an error number will be returned
49to indicate the error.
50.Sh ERRORS
51The
52.Fn pthread_rwlock_destroy
53function will fail if:
54.Bl -tag -width Er
55.It Bq Er EPERM
56The caller does not have the privilege to perform the operation.
57.El
58.Pp
59The
60.Fn pthread_rwlock_destroy
61function may fail if:
62.Bl -tag -width Er
63.It Bq Er EBUSY
64The system has detected an attempt to destroy the object referenced by
65.Fa lock
66while it is locked.
67.It Bq Er EINVAL
68The value specified by
69.Fa lock
70is invalid.
71.El
72.Sh SEE ALSO
73.Xr pthread_rwlock_init 3
74.Sh STANDARDS
75The
76.Fn pthread_rwlock_destroy
77function is expected to conform to
78.St -susv2 .
79.Sh HISTORY
80The
81.Fn pthread_rwlock_destroy
82function first appeared in
83.Fx 3.0 .
84