1c0e36632SAlexander Langer.\" Copyright (c) 1998 Alex Nash 2c0e36632SAlexander Langer.\" All rights reserved. 3c0e36632SAlexander Langer.\" 4c0e36632SAlexander Langer.\" Redistribution and use in source and binary forms, with or without 5c0e36632SAlexander Langer.\" modification, are permitted provided that the following conditions 6c0e36632SAlexander Langer.\" are met: 7c0e36632SAlexander Langer.\" 1. Redistributions of source code must retain the above copyright 8c0e36632SAlexander Langer.\" notice, this list of conditions and the following disclaimer. 9c0e36632SAlexander Langer.\" 2. Redistributions in binary form must reproduce the above copyright 10c0e36632SAlexander Langer.\" notice, this list of conditions and the following disclaimer in the 11c0e36632SAlexander Langer.\" documentation and/or other materials provided with the distribution. 12c0e36632SAlexander Langer.\" 13c0e36632SAlexander Langer.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14c0e36632SAlexander Langer.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15c0e36632SAlexander Langer.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16c0e36632SAlexander Langer.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17c0e36632SAlexander Langer.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18c0e36632SAlexander Langer.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19c0e36632SAlexander Langer.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20c0e36632SAlexander Langer.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21c0e36632SAlexander Langer.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22c0e36632SAlexander Langer.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23c0e36632SAlexander Langer.\" SUCH DAMAGE. 24c0e36632SAlexander Langer.\" 257f3dea24SPeter Wemm.\" $FreeBSD$ 26c0e36632SAlexander Langer.\" 27da69a97fSAlexander Langer.Dd March 22, 1999 28c0e36632SAlexander Langer.Dt PTHREAD_RWLOCKATTR_GETPSHARED 3 29c0e36632SAlexander Langer.Os 30c0e36632SAlexander Langer.Sh NAME 31c0e36632SAlexander Langer.Nm pthread_rwlockattr_getpshared 32da69a97fSAlexander Langer.Nd get the process shared attribute 33d8a78688SAlexey Zelkin.Sh LIBRARY 34d8a78688SAlexey Zelkin.Lb libc_r 35ec7452f1SRuslan Ermilov.Lb libpthread 36f9f9d2e8SRuslan Ermilov.Lb libthr 37c0e36632SAlexander Langer.Sh SYNOPSIS 3832eef9aeSRuslan Ermilov.In pthread.h 39c0e36632SAlexander Langer.Ft int 40dcb964faSBruce Evans.Fn pthread_rwlockattr_getpshared "const pthread_rwlockattr_t *attr" "int *pshared" 41c0e36632SAlexander Langer.Sh DESCRIPTION 42c0e36632SAlexander LangerThe 43c0e36632SAlexander Langer.Fn pthread_rwlockattr_getpshared 44c0e36632SAlexander Langerfunction is used to get the process shared setting of a read/write 455203edcdSRuslan Ermilovlock attribute object. 465203edcdSRuslan ErmilovThe setting is returned via 47c0e36632SAlexander Langer.Fa pshared , 48c0e36632SAlexander Langerand may be one of two values: 490d42ab24SRuslan Ermilov.Bl -tag -width PTHREAD_PROCESS_PRIVATE 500d42ab24SRuslan Ermilov.It Dv PTHREAD_PROCESS_SHARED 51c0e36632SAlexander LangerAny thread of any process that has access to the memory where the 52c0e36632SAlexander Langerread/write lock resides can manipulate the lock. 530d42ab24SRuslan Ermilov.It Dv PTHREAD_PROCESS_PRIVATE 54c0e36632SAlexander LangerOnly threads created within the same process as the thread that 555203edcdSRuslan Ermilovinitialized the read/write lock can manipulate the lock. 565203edcdSRuslan ErmilovThis is 57c0e36632SAlexander Langerthe default value. 58c0e36632SAlexander Langer.El 59c0e36632SAlexander Langer.Sh RETURN VALUES 60c0e36632SAlexander LangerIf successful, the 61c0e36632SAlexander Langer.Fn pthread_rwlockattr_getpshared 625203edcdSRuslan Ermilovfunction will return zero. 635203edcdSRuslan ErmilovOtherwise an error number will be returned 64c0e36632SAlexander Langerto indicate the error. 65c0e36632SAlexander Langer.Sh ERRORS 669d09157aSPhilippe CharnierThe 67c0e36632SAlexander Langer.Fn pthread_rwlockattr_getpshared 689d09157aSPhilippe Charnierfunction may fail if: 69c0e36632SAlexander Langer.Bl -tag -width Er 70c0e36632SAlexander Langer.It Bq Er EINVAL 71c0e36632SAlexander LangerThe value specified by 72c0e36632SAlexander Langer.Fa attr 73c0e36632SAlexander Langeris invalid. 74c0e36632SAlexander Langer.El 759cbda590SRuslan Ermilov.Sh SEE ALSO 769cbda590SRuslan Ermilov.Xr pthread_rwlockattr_init 3 , 779cbda590SRuslan Ermilov.Xr pthread_rwlockattr_setpshared 3 , 789cbda590SRuslan Ermilov.Xr pthread_rwlock_init 3 799cbda590SRuslan Ermilov.Sh STANDARDS 809cbda590SRuslan ErmilovThe 819cbda590SRuslan Ermilov.Fn pthread_rwlockattr_getpshared 829cbda590SRuslan Ermilovfunction is expected to conform to 839cbda590SRuslan Ermilov.St -susv2 . 84c0e36632SAlexander Langer.Sh HISTORY 85c0e36632SAlexander LangerThe 86c0e36632SAlexander Langer.Fn pthread_rwlockattr_getpshared 87c0e36632SAlexander Langerfunction first appeared in 88c0e36632SAlexander Langer.Fx 3.0 . 89