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 2003 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * DESCRIPTION: Contains a front end to the map locking code. These are called
31 * when a map, or its map_ctrl structure, needs to be locked
32 * for a short time for internal modification. This lock should
33 * not be held between DBM operations.
34 *
35 * NOTE : This is not the same mechanism as the `update lock` which is
36 * held for a relatively long period when a map is being update
37 * from the DIT.
38 */
39
40 #include <unistd.h>
41 #include <syslog.h>
42 #include <sys/mman.h>
43 #include <thread.h>
44 #include <synch.h>
45 #include <ndbm.h>
46 #include "ypsym.h"
47 #include "shim.h"
48
49 /*
50 * FUNCTION : lock_map_ctrl()
51 *
52 * DESCRIPTION: Front end to the lock routine taking map_ctrl structure as
53 * argument. Saves cost of a hash operation.
54 *
55 * GIVEN : Map_ctrl structure .
56 *
57 * RETURNS : Same as lock core
58 */
59 int
60 lock_map_ctrl(map_ctrl *map)
61 {
62 int ret;
63
64 ret = lock_core(map->hash_val);
65
66 return (ret);
67 }
|
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 2015 Gary Mills
24 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 /*
29 * DESCRIPTION: Contains a front end to the map locking code. These are called
30 * when a map, or its map_ctrl structure, needs to be locked
31 * for a short time for internal modification. This lock should
32 * not be held between DBM operations.
33 *
34 * NOTE : This is not the same mechanism as the `update lock` which is
35 * held for a relatively long period when a map is being update
36 * from the DIT.
37 */
38
39 #include <unistd.h>
40 #include <syslog.h>
41 #include <sys/mman.h>
42 #include <thread.h>
43 #include <synch.h>
44 #include <ndbm.h>
45 #include "ypsym.h"
46 #include "shim.h"
47 #include "stubs.h"
48
49 /*
50 * FUNCTION : lock_map_ctrl()
51 *
52 * DESCRIPTION: Front end to the lock routine taking map_ctrl structure as
53 * argument. Saves cost of a hash operation.
54 *
55 * GIVEN : Map_ctrl structure .
56 *
57 * RETURNS : Same as lock core
58 */
59 int
60 lock_map_ctrl(map_ctrl *map)
61 {
62 int ret;
63
64 ret = lock_core(map->hash_val);
65
66 return (ret);
67 }
|