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.Dd August 4, 1998 26.Dt PTHREAD_RWLOCKATTR_INIT 3 27.Os 28.Sh NAME 29.Nm pthread_rwlockattr_init 30.Nd initialize a read/write lock 31.Sh LIBRARY 32.Lb libpthread 33.Sh SYNOPSIS 34.In 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. 45Otherwise an error number will be returned 46to indicate the error. 47.Sh ERRORS 48The 49.Fn pthread_rwlockattr_init 50function will fail if: 51.Bl -tag -width Er 52.It Bq Er ENOMEM 53Insufficient memory exists to initialize the attribute object. 54.El 55.Sh SEE ALSO 56.Xr pthread_rwlock_init 3 , 57.Xr pthread_rwlockattr_destroy 3 , 58.Xr pthread_rwlockattr_getpshared 3 , 59.Xr pthread_rwlockattr_setpshared 3 60.Sh STANDARDS 61The 62.Fn pthread_rwlockattr_init 63function is expected to conform to 64.St -susv2 . 65.Sh HISTORY 66The 67.Fn pthread_rwlockattr_init 68function first appeared in 69.Fx 3.0 . 70