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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _BARRIER_H
#define _BARRIER_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* APIs for the barrier synchronization primitive.
*/
#if defined(sun)
#include <synch.h>
#else
#include <semaphore.h>
typedef sem_t sema_t;
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct barrier {
pthread_mutex_t bar_lock; /* protects bar_numin */
int bar_numin; /* current number of waiters */
sema_t bar_sem; /* where everyone waits */
int bar_nthr; /* # of waiters to trigger release */
} barrier_t;
extern void barrier_init(barrier_t *, int);
extern int barrier_wait(barrier_t *);
#ifdef __cplusplus
}
#endif
#endif /* _BARRIER_H */
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