xref: /openbsd/lib/librthread/rthread_barrier_attr.c (revision c9961bb2)

/*	$OpenBSD: rthread_barrier_attr.c,v 1.1 2012/04/11 10:18:46 pirofti Exp $	*/
/*
 * Copyright (c) 2012 Paul Irofti <pirofti@openbsd.org>
 *
 * Permission to use, copy, modify, and/or 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.
 */

#include <errno.h>
#include <stdlib.h>

#include <pthread.h>

#include "rthread.h"

int
pthread_barrierattr_init(pthread_barrierattr_t *attr)
{
	if (attr == NULL) {
		return EINVAL;
	}

	*attr = calloc(1, sizeof **attr);
	if (*attr == NULL) {
		return ENOMEM;
	}

	(*attr)->pshared = PTHREAD_PROCESS_PRIVATE;

	return 0;
}

int
pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
{
	if (attr == NULL || *attr == NULL) {
		return EINVAL;
	}
	free(*attr);
	return 0;
}

int
pthread_barrierattr_getpshared(pthread_barrierattr_t *attr, int *pshared)
{
	if (attr == NULL || *attr == NULL) {
		return EINVAL;
	}
	*pshared = (*attr)->pshared;
	return 0;
}

int
pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
{
	if (attr == NULL || *attr == NULL) {
		return EINVAL;
	}

	if (pshared != PTHREAD_PROCESS_PRIVATE) {
		return ENOTSUP;
	}

	(*attr)->pshared = pshared;

	return 0;
}