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.\" $OpenBSD: pthread_barrierattr_getpshared.3,v 1.4 2020/04/06 00:01:08 pirofti Exp $
.\"
.\" Copyright (c) 2012 Paul Irofti <paul@irofti.net>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.\"
.Dd $Mdocdate: April 6 2020 $
.Dt PTHREAD_BARRIERATTR_GETPSHARED 3
.Os
.Sh NAME
.Nm pthread_barrierattr_getpshared ,
.Nm pthread_barrierattr_setpshared
.Nd get and set the process-shared attribute of the barrier attribute's object
.Sh SYNOPSIS
.In pthread.h
.Ft int
.Fn pthread_barrierattr_getpshared "pthread_barrierattr_t *attr" "int *pshared"
.Ft int
.Fn pthread_barrierattr_setpshared "pthread_barrierattr_t *attr" "int pshared"
.Sh DESCRIPTION
The
.Fn pthread_barrierattr_getpshared
function writes in
.Fa pshared
the current process-shared attribute value.
.Pp
The
.Fn pthread_barrierattr_setpshared
function sets the process-shared attribute as indicated in
.Fa pshared .
.Sh RETURN VALUES
If successful,
.Fn pthread_barrierattr_getpshared
and
.Fn pthread_barrierattr_setpshared
will return zero, otherwise an error number will be returned to
indicate the error.
.Sh ERRORS
.Fn pthread_barrierattr_getpshared
will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
The value specified by
.Fa attr
is invalid.
.El
.Pp
.Fn pthread_barrierattr_setpshared
will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
The value specified by
.Fa attr
is invalid.
.It Bq Er ENOTSUP
The value specified by
.Fa pshared
is not PTHREAD_PROCESS_PRIVATE.
.El
.Sh SEE ALSO
.Xr pthread_barrier_init 3 ,
.Xr pthread_barrier_wait 3 ,
.Xr pthread_barrierattr_init 3
.Sh STANDARDS
.Fn pthread_barrierattr_getpshared
and
.Fn pthread_barrierattr_setpshared
conform to
.St -p1003.1-2008 .
.Sh BUGS
Currently only private barriers are supported and the pshared attribute is
always set that way.
Any attempts to change that value will trigger
.Er ENOTSUP .
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