1 /* 2 * CDDL HEADER START 3 * 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 7 * with the License. 8 * 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. 13 * 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] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _BARRIER_H 28 #define _BARRIER_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * APIs for the barrier synchronization primitive. 34 */ 35 36 #ifdef HAVE_NBTOOL_CONFIG_H 37 #include "nbtool_config.h" 38 #endif 39 40 #ifdef illumos 41 #include <synch.h> 42 #elif defined(HAVE_DISPATCH_SEMAPHORE_CREATE) 43 #include <dispatch/dispatch.h> 44 typedef dispatch_semaphore_t sema_t; 45 #else 46 #include <semaphore.h> 47 typedef sem_t sema_t; 48 #endif 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 typedef struct barrier { 55 pthread_mutex_t bar_lock; /* protects bar_numin */ 56 int bar_numin; /* current number of waiters */ 57 58 sema_t bar_sem; /* where everyone waits */ 59 int bar_nthr; /* # of waiters to trigger release */ 60 } barrier_t; 61 62 extern void barrier_init(barrier_t *, int); 63 extern int barrier_wait(barrier_t *); 64 65 #ifdef __cplusplus 66 } 67 #endif 68 69 #endif /* _BARRIER_H */ 70