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1.\" Copyright (c) 1998 Alex Nash
2.\" All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.
9.\" 2. Redistributions in binary form must reproduce the above copyright
10.\" notice, this list of conditions and the following disclaimer in the
11.\" documentation and/or other materials provided with the distribution.
12.\"
13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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25.\" $FreeBSD: src/lib/libc_r/man/pthread_rwlockattr_init.3,v 1.6 2001/10/01 16:09:09 ru Exp $
26.\"
27.Dd August 4, 1998
28.Dt PTHREAD_RWLOCKATTR_INIT 3
29.Os
30.Sh NAME
31.Nm pthread_rwlockattr_init
32.Nd initialize a read/write lock
33.Sh SYNOPSIS
34.In pthread.h
35.Ft int
36.Fo pthread_rwlockattr_init
37.Fa "pthread_rwlockattr_t *attr"
38.Fc
39.Sh DESCRIPTION
40The
41.Fn pthread_rwlockattr_init
42function is used to initialize a read/write lock attribute object.
43.Sh RETURN VALUES
44If successful, the
45.Fn pthread_rwlockattr_init
46function will return zero.
47Otherwise, an error number will be returned to indicate the error.
48.Sh SEE ALSO
49.Xr pthread_rwlock_init 3 ,
50.Xr pthread_rwlockattr_destroy 3 ,
51.Xr pthread_rwlockattr_getpshared 3 ,
52.Xr pthread_rwlockattr_setpshared 3
53.Sh STANDARDS
54The
55.Fn pthread_rwlockattr_init
56function is expected to conform to
57.St -susv2 .
58.Sh ERRORS
59.Fn pthread_rwlockattr_init
60will fail if:
61.Bl -tag -width Er
62.It Bq Er ENOMEM
63Insufficient memory exists to initialize the attribute object.
64.El
65.Sh HISTORY
66The
67.Fn pthread_rwlockattr_init
68function first appeared in
69.Fx 3.0 .