.\"	$OpenBSD: pthread_barrierattr_getpshared.3,v 1.5 2023/02/22 06:31:51 guenther Exp $
.\"
.\" Copyright (c) 2012 Paul Irofti <paul@irofti.net>
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.Dd $Mdocdate: February 22 2023 $
.Dt PTHREAD_BARRIERATTR_GETPSHARED 3
.Os
.Sh NAME
.Nm pthread_barrierattr_getpshared ,
.Nm pthread_barrierattr_setpshared
.Nd get or 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 .