xref: /minix/external/bsd/bind/dist/lib/isc/mutexblock.c (revision bb9622b5)
1 /*	$NetBSD: mutexblock.c,v 1.4 2014/12/10 04:37:59 christos Exp $	*/
2 
3 /*
4  * Copyright (C) 2004, 2005, 2007, 2011, 2012  Internet Systems Consortium, Inc. ("ISC")
5  * Copyright (C) 1999-2001  Internet Software Consortium.
6  *
7  * Permission to use, copy, modify, and/or distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17  * PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 /* Id */
21 
22 /*! \file */
23 
24 #include <config.h>
25 
26 #include <isc/mutexblock.h>
27 #include <isc/util.h>
28 
29 isc_result_t
30 isc_mutexblock_init(isc_mutex_t *block, unsigned int count) {
31 	isc_result_t result;
32 	unsigned int i;
33 
34 	for (i = 0; i < count; i++) {
35 		result = isc_mutex_init(&block[i]);
36 		if (result != ISC_R_SUCCESS) {
37 			while (i > 0U) {
38 				i--;
39 				DESTROYLOCK(&block[i]);
40 			}
41 			return (result);
42 		}
43 	}
44 
45 	return (ISC_R_SUCCESS);
46 }
47 
48 isc_result_t
49 isc_mutexblock_destroy(isc_mutex_t *block, unsigned int count) {
50 	isc_result_t result;
51 	unsigned int i;
52 
53 	for (i = 0; i < count; i++) {
54 		result = isc_mutex_destroy(&block[i]);
55 		if (result != ISC_R_SUCCESS)
56 			return (result);
57 	}
58 
59 	return (ISC_R_SUCCESS);
60 }
61