4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
30 #pragma ident "%Z%%M% %I% %E% SMI"
33 * APIs for the barrier synchronization primitive.
39 #include <semaphore.h>
47 typedef struct barrier {
48 pthread_mutex_t bar_lock; /* protects bar_numin */
49 int bar_numin; /* current number of waiters */
51 sema_t bar_sem; /* where everyone waits */
52 int bar_nthr; /* # of waiters to trigger release */
55 extern void barrier_init(barrier_t *, int);
56 extern int barrier_wait(barrier_t *);
62 #endif /* _BARRIER_H */