usr/src/cmd/tnf/prex/queue.h

   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, 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 (c) 1994, by Sun Microsytems, Inc.
  24  */
  25
  26 #ifndef _QUEUE_H
  27 #define _QUEUE_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 /*
  32  * Includes
  33  */
  34
  35 #include <sys/types.h>
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /*
  42  * Typedefs
  43  */
  44
  45 typedef struct queue_node queue_node_t;
  46 struct queue_node {
  47         queue_node_t   *next_p;
  48         queue_node_t   *prev_p;
  49 };
  50
  51
  52 /*
  53  * Declarations
  54  */
  55
  56 boolean_t          queue_isempty(queue_node_t * q);
  57 queue_node_t   *queue_prepend(queue_node_t * h, queue_node_t * q);
  58 queue_node_t   *queue_append(queue_node_t * h, queue_node_t * q);
  59 void                    queue_init(queue_node_t * q);
  60 queue_node_t   *queue_next(queue_node_t * h, queue_node_t * q);
  61 queue_node_t   *queue_remove(queue_node_t * q);
  62
  63 #ifdef __cplusplus
  64 }
  65 #endif
  66
  67 #endif  /* _QUEUE_H */