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 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 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 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 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 LIBRARY 34.Lb libpthread 35.Sh SYNOPSIS 36.In pthread.h 37.Ft int 38.Fn pthread_rwlockattr_init "pthread_rwlockattr_t *attr" 39.Sh DESCRIPTION 40The 41.Fn pthread_rwlockattr_init 42function is used to initialize a read/write lock attributes object. 43.Sh RETURN VALUES 44If successful, the 45.Fn pthread_rwlockattr_init 46function will return zero. 47Otherwise an error number will be returned 48to indicate the error. 49.Sh ERRORS 50The 51.Fn pthread_rwlockattr_init 52function will fail if: 53.Bl -tag -width Er 54.It Bq Er ENOMEM 55Insufficient memory exists to initialize the attribute object. 56.El 57.Sh SEE ALSO 58.Xr pthread_rwlock_init 3 , 59.Xr pthread_rwlockattr_destroy 3 , 60.Xr pthread_rwlockattr_getpshared 3 , 61.Xr pthread_rwlockattr_setpshared 3 62.Sh STANDARDS 63The 64.Fn pthread_rwlockattr_init 65function is expected to conform to 66.St -susv2 . 67.Sh HISTORY 68The 69.Fn pthread_rwlockattr_init 70function first appeared in 71.Fx 3.0 . 72