76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* drm_linux_list.h -- linux list functions for the BSDs.
|
|
* Created: Mon Apr 7 14:30:16 1999 by anholt@FreeBSD.org
|
|
*/
|
|
/*-
|
|
* Copyright 2003 Eric Anholt
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Eric Anholt <anholt@FreeBSD.org>
|
|
*
|
|
*/
|
|
|
|
struct list_head {
|
|
struct list_head *next, *prev;
|
|
};
|
|
|
|
/* Cheat, assume the list_head is at the start of the struct */
|
|
#define list_entry(entry, type, member) (type *)(entry)
|
|
|
|
static __inline__ void
|
|
INIT_LIST_HEAD(struct list_head *head) {
|
|
(head)->next = head;
|
|
(head)->prev = head;
|
|
}
|
|
|
|
static __inline__ int
|
|
list_empty(struct list_head *head) {
|
|
return (head)->next == head;
|
|
}
|
|
|
|
static __inline__ void
|
|
list_add_tail(struct list_head *entry, struct list_head *head) {
|
|
(entry)->prev = (head)->prev;
|
|
(entry)->next = head;
|
|
(head)->prev->next = entry;
|
|
(head)->prev = entry;
|
|
}
|
|
|
|
static __inline__ void
|
|
list_del(struct list_head *entry) {
|
|
(entry)->next->prev = (entry)->prev;
|
|
(entry)->prev->next = (entry)->next;
|
|
}
|
|
|
|
#define list_for_each(entry, head) \
|
|
for (entry = (head)->next; entry != head; entry = (entry)->next)
|
|
|
|
#define list_for_each_prev(entry, head) \
|
|
for (entry = (head)->prev; entry != (head); \
|
|
entry = entry->prev)
|
|
|
|
#define list_for_each_safe(entry, temp, head) \
|
|
for (entry = (head)->next, temp = (entry)->next; \
|
|
entry != head; \
|
|
entry = temp, temp = entry->next)
|
|
|