usr/src/cmd/nscd/nscd_seqnum.c

   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
  30 static nscd_seq_num_t           acc_seq = 1;
  31 static mutex_t                  seq_mutex = DEFAULTMUTEX;
  32 static nscd_cookie_num_t        cookie_num = 1234;
  33 static mutex_t                  cookie_mutex = DEFAULTMUTEX;
  34
  35 nscd_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++;
  43         (void) mutex_unlock(&seq_mutex);
  44
  45         return (seq_num);
  46 }
  47
  48 nscd_cookie_num_t
  49 _nscd_get_cookie_num()
  50 {
  51         nscd_cookie_num_t       ret;
  52
  53         (void) mutex_lock(&cookie_mutex);
  54         ret = cookie_num;
  55         cookie_num++;
  56         (void) mutex_unlock(&cookie_mutex);
  57
  58         return (ret);
  59 }