external/bsd/bind/dist/lib/isc/mutexblock.c

   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 }