include/sys/list.h

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This source file includes following definitions.
list_insert
list_remove
   1 /*
   2  * Copyright (c) 2005-2007, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 
  30 #ifndef _SYS_LIST_H_
  31 #define _SYS_LIST_H_
  32 
  33 #include <sys/cdefs.h>
  34 
  35 struct list {
  36         struct list     *next;
  37         struct list     *prev;
  38 };
  39 
  40 typedef struct list *list_t;
  41 
  42 #define list_init(head)         ((head)->next = (head)->prev = (head))
  43 #define list_next(node)         ((node)->next)
  44 #define list_prev(node)         ((node)->prev)
  45 #define list_empty(head)        ((head)->next == (head))
  46 #define list_first(head)        ((head)->next)
  47 #define list_last(head)         ((head)->prev)
  48 #define list_end(head, node)    ((node) == (head))
  49 
  50 /*
  51  * Get the struct for this entry
  52  */
  53 #define list_entry(p, type, member) \
  54     ((type *)((char *)(p) - (unsigned long)(&((type *)0)->member)))
  55 
  56 #define LIST_INIT(head) { &(head), &(head) }
  57 
  58 
  59 /*
  60  * Insert new node after specified node
  61  */
  62 static __inline void
  63 list_insert(list_t prev, list_t node)
  64 {
  65         prev->next->prev = node;
  66         node->next = prev->next;
  67         node->prev = prev;
  68         prev->next = node;
  69 }
  70 
  71 /*
  72  * Remove specified node from list
  73  */
  74 static __inline void
  75 list_remove(list_t node)
  76 {
  77         node->prev->next = node->next;
  78         node->next->prev = node->prev;
  79 }
  80 
  81 #endif /* !_SYS_LIST_H_ */
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root/include/sys/list.h

INCLUDED FROM

DEFINITIONS
