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/*
* Copyright (c) HighPoint Technologies, Inc.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <dev/hptrr/hptrr_config.h>
/*
* $Id: list.h,v 1.6 2006/10/31 06:25:28 gmm Exp $
* Copyright (C) 2004-2005 HighPoint Technologies, Inc. All rights reserved.
*/
#ifndef _HPT_LIST_H_
#define _HPT_LIST_H_
#ifndef _LINUX_LIST_H
#ifndef HPT_INLINE
#define HPT_INLINE __inline
#endif
struct list_head {
struct list_head *next, *prev;
};
#define INIT_LIST_HEAD(ptr) do { (ptr)->next = (ptr); (ptr)->prev = (ptr); } while (0)
static HPT_INLINE void __list_add(struct list_head * _new, struct list_head * prev, struct list_head * next)
{
next->prev = _new;
_new->next = next;
_new->prev = prev;
prev->next = _new;
}
static HPT_INLINE void list_add(struct list_head *_new, struct list_head *head)
{
__list_add(_new, head, head->next);
}
static HPT_INLINE void list_add_tail(struct list_head *_new, struct list_head *head)
{
__list_add(_new, head->prev, head);
}
static HPT_INLINE void __list_del(struct list_head * prev, struct list_head * next)
{
next->prev = prev;
prev->next = next;
}
static HPT_INLINE void list_del(struct list_head *entry)
{
__list_del(entry->prev, entry->next);
}
static HPT_INLINE void list_del_init(struct list_head *entry)
{
__list_del(entry->prev, entry->next);
INIT_LIST_HEAD(entry);
}
static HPT_INLINE int list_empty(struct list_head *head)
{
HPT_ASSERT(!(head->next==head && head->prev!=head));
return head->next == head;
}
static HPT_INLINE void __list_splice(struct list_head *list,
struct list_head *head)
{
struct list_head *first = list->next;
struct list_head *last = list->prev;
struct list_head *at = head->next;
first->prev = head;
head->next = first;
last->next = at;
at->prev = last;
}
static HPT_INLINE void list_splice(struct list_head *list, struct list_head *head)
{
if (!list_empty(list))
__list_splice(list, head);
}
static HPT_INLINE void list_splice_init(struct list_head *list, struct list_head *head)
{
if (!list_empty(list)) {
__list_splice(list, head);
INIT_LIST_HEAD(list);
}
}
#define list_entry(ptr, type, member) \
((type *)((char *)(ptr)-(HPT_UPTR)(&((type *)0)->member)))
#define list_for_each(pos, head) \
for (pos = (head)->next; pos != (head); pos = pos->next)
#define list_for_each_safe(pos, n, head) \
for (pos = (head)->next, n = pos->next; pos != (head); \
pos = n, n = pos->next)
#define get_first_item(attached, type, member) \
((type *)((char *)((attached)->next)-(HPT_UPTR)(&((type *)0)->member)))
#endif
#endif
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