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