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	__XSEM_H__
28#define	__XSEM_H__
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36/*
37 * xsem.h: to provide a semaphore system (used by the smq routines)
38 *
39 * these routines come from the libxposix library.
40 */
41
42#include <pthread.h>
43#include <time.h>
44
45
46/* DEFINES */
47#define	XSEM_ERROR	-1
48#define	XSEM_EBUSY	1
49#define	XSEM_ETIME	2
50
51
52/* STRUCTURES */
53typedef struct
54{
55	pthread_mutex_t	semMutex;
56	pthread_cond_t	semCV;
57	int		semaphore;
58} xsem_t;
59
60
61/* PROTOTYPES */
62int	xsem_init(xsem_t *sem, int pshared, unsigned int value);
63void	xsem_destroy(xsem_t *sem);
64int	xsem_wait(xsem_t *sem);
65int	xsem_trywait(xsem_t *sem);
66int	xsem_post(xsem_t *sem);
67void	xsem_getvalue(xsem_t *sem, int *sval);
68
69int	xsem_xwait(xsem_t *sem, int timeout, timestruc_t *time);
70
71#ifdef	__cplusplus
72}
73#endif
74
75#endif /* __XSEM_H__ */
76