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 SYNOPSIS 34.Fd #include <pthread.h> 35.Ft int 36.Fn pthread_rwlockattr_init "pthread_rwlockattr_t *attr" 37.Sh DESCRIPTION 38The 39.Fn pthread_rwlockattr_init 40function is used to initialize a read/write lock attributes object. 41.Sh RETURN VALUES 42If successful, the 43.Fn pthread_rwlockattr_init 44function will return zero. Otherwise an error number will be returned 45to indicate the error. 46.Sh SEE ALSO 47.Xr pthread_rwlock_init 3 , 48.Xr pthread_rwlockattr_destroy 3 , 49.Xr pthread_rwlockattr_getpshared 3 , 50.Xr pthread_rwlockattr_setpshared 3 51.Sh STANDARDS 52The 53.Fn pthread_rwlockattr_init 54function is expected to conform to 55.St -susv2 . 56.Sh ERRORS 57.Fn pthread_rwlockattr_init 58will fail if: 59.Bl -tag -width Er 60.It Bq Er ENOMEM 61Insufficient memory exists to initialize the attribute object. 62.El 63.Sh HISTORY 64The 65.Fn pthread_rwlockattr_init 66function first appeared in 67.Fx 3.0 . 68