nscd_seqnum.c revision 2830:5228d1267a01 
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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include "nscd_db.h"
29
30static nscd_seq_num_t	acc_seq = 1;
31static mutex_t		seq_mutex = DEFAULTMUTEX;
32static nscd_cookie_t	cookie = 1234;
33static mutex_t		cookie_mutex = DEFAULTMUTEX;
34
35nscd_seq_num_t
36_nscd_get_seq_num()
37{
38	nscd_seq_num_t	seq_num;
39
40	(void) mutex_lock(&seq_mutex);
41	seq_num = acc_seq;
42	acc_seq += 1;
43	(void) mutex_unlock(&seq_mutex);
44
45	return (seq_num);
46}
47
48nscd_cookie_t
49_nscd_get_cookie()
50{
51	nscd_cookie_t	ret;
52
53	(void) mutex_lock(&cookie_mutex);
54	ret = cookie;
55	cookie += 1;
56	(void) mutex_unlock(&cookie_mutex);
57
58	return (ret);
59}
60