/* * 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: src/sys/dev/hptrr/list.h,v 1.2.2.1.4.1 2010/06/14 02:09:06 kensmith Exp $ */ /* * $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 typedef unsigned long HPT_UPTR; struct list_head { struct list_head *next, *prev; }; #define LIST_HEAD_INIT(name) { &(name), &(name) } #define LIST_HEAD(name) \ struct list_head name = LIST_HEAD_INIT(name) #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 inline void list_move(struct list_head *list, struct list_head *head) { __list_del(list->prev, list->next); list_add(list, head); } static inline void list_move_tail(struct list_head *list, struct list_head *head) { __list_del(list->prev, list->next); list_add_tail(list, head); } static HPT_INLINE int list_empty(struct list_head *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_entry(ptr, type, member) \ ((type *)((unsigned long)(ptr)-((unsigned long)(&((type *)1)->member) - 1))) #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