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 libc_r 35.Lb libpthread 36.Lb libthr 37.Sh SYNOPSIS 38.In pthread.h 39.Ft int 40.Fn pthread_rwlockattr_init "pthread_rwlockattr_t *attr" 41.Sh DESCRIPTION 42The 43.Fn pthread_rwlockattr_init 44function is used to initialize a read/write lock attributes object. 45.Sh RETURN VALUES 46If successful, the 47.Fn pthread_rwlockattr_init 48function will return zero. 49Otherwise an error number will be returned 50to indicate the error. 51.Sh SEE ALSO 52.Xr pthread_rwlockattr_destroy 3 , 53.Xr pthread_rwlockattr_getpshared 3 , 54.Xr pthread_rwlockattr_setpshared 3 , 55.Xr pthread_rwlock_init 3 56.Sh STANDARDS 57The 58.Fn pthread_rwlockattr_init 59function is expected to conform to 60.St -susv2 . 61.Sh ERRORS 62The 63.Fn pthread_rwlockattr_init 64function will fail if: 65.Bl -tag -width Er 66.It Bq Er ENOMEM 67Insufficient memory exists to initialize the attribute object. 68.El 69.Sh HISTORY 70The 71.Fn pthread_rwlockattr_init 72function first appeared in 73.Fx 3.0 . 74