list.h

Go to the documentation of this file.

/**
 * \addtogroup list
 * @{
 */

/**
 * \file
 * Linked list manipulation routines.
 * \author Adam Dunkels <adam@sics.se>
 *
 *
 */



/*
 * Copyright (c) 2004, Swedish Institute of Computer Science.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the Institute nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 *
 * This file is part of the Contiki operating system.
 * 
 * Author: Adam Dunkels <adam@sics.se>
 *
 * $Id: list.h,v 1.3 2005/03/08 11:47:24 adam Exp $
 */
#ifndef __LIST_H__
#define __LIST_H__

#define LIST_CONCAT2(s1, s2) s1##s2
#define LIST_CONCAT(s1, s2) LIST_CONCAT2(s1, s2)

/**
 * Declare a linked list.
 *
 * This macro declares a linked list with the specified \c type. The
 * type \b must be a structure (\c struct) with its first element
 * being a pointer. This pointer is used by the linked list library to
 * form the linked lists.
 *
 * Example
 \code

 struct packet * {
   struct packet *next;
   char data[1500];
 };
 
 LIST(packets);
 \endcode
 *
 * \param name The name of the list.
 */
#define LIST(name) \
         static void *LIST_CONCAT(name,_list) = NULL; \
         static list_t name = (list_t)&LIST_CONCAT(name,_list)

/**
 * The linked list type.
 *
 */
typedef void ** list_t;

void  list_init(list_t list);
void *list_head(list_t list);
void *list_tail(list_t list);
void *list_pop (list_t list);
void  list_push(list_t list, void *item);

void *list_chop(list_t list);

void  list_add(list_t list, void *item);
void  list_remove(list_t list, void *item);


void  list_copy(list_t dest, list_t src);

#endif /* __LIST_H__ */

/** @} */

---