xsem.h revision 03831d35f7499c87d51205817c93e9a8d42c4bae
/*
* 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 __XSEM_H__
#define __XSEM_H__
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* xsem.h: to provide a semaphore system (used by the smq routines)
*
* these routines come from the libxposix library.
*/
#include <pthread.h>
#include <time.h>
/* DEFINES */
#define XSEM_ERROR -1
#define XSEM_EBUSY 1
#define XSEM_ETIME 2
/* STRUCTURES */
typedef struct
{
pthread_mutex_t semMutex;
pthread_cond_t semCV;
int semaphore;
} xsem_t;
/* PROTOTYPES */
int xsem_init(xsem_t *sem, int pshared, unsigned int value);
void xsem_destroy(xsem_t *sem);
int xsem_wait(xsem_t *sem);
int xsem_trywait(xsem_t *sem);
int xsem_post(xsem_t *sem);
void xsem_getvalue(xsem_t *sem, int *sval);
int xsem_xwait(xsem_t *sem, int timeout, timestruc_t *time);
#ifdef __cplusplus
}
#endif
#endif /* __XSEM_H__ */