Linux 内核链表移植

参考网上的文章修改了移植后的Linux内核的双向链表和HASH链表, 使之适用于Linux和Windows平台. 可以在用户态下使用. 任何后果, 本人概不负责!

下面是全部代码:

/**
 * dhlist.h
 *  - deque list and hash list from Linux Kernel
 *
 * from Linux Kernel
 * for Windows and Linux
 *
 * modified by cheungmine
 * 2013-4
 */
#ifndef _DH_LIST_H
#define _DH_LIST_H

#ifdef typeof

static inline void prefetch(const void *x) {;}
static inline void prefetchw(const void *x) {;}

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)

#define container_of(ptr, type, member) ( { \
    const typeof( ((type *)0)->member ) *__mptr = (ptr); \
    (type *)( (char *)__mptr - offsetof(type,member) ); } )

#else

static inline int prefetch(const void *x) {;return 1;}
static inline int prefetchw(const void *x) {;return 1;}

#define offsetof(type, field)    ((LONG)(LONG_PTR)&((type *)0)->field)

#define container_of(address, type, field) \
    ((type *)((char *)(address) - offsetof(type, field)))

#endif

#ifndef LIST_POISON1
#define LIST_POISON1 ((void *) 0x00100100)
#endif

#ifndef LIST_POISON2
#define LIST_POISON2 ((void *) 0x00200200)
#endif

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)

/*
 * Insert a new entry between two known consecutive entries.
 *
 * This is only for internal list manipulation where we know
 * the prev/next entries already!
 */
static 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;
}

/**
 * list_add - add a new entry
 * @new: new entry to be added
 * @head: list head to add it after
 *
 * Insert a new entry after the specified head.
 * This is good for implementing stacks.
 */
static inline void list_add(struct list_head *_new, struct list_head *head)
{
    __list_add(_new, head, head->next);
}

/**
 * list_add_tail - add a new entry
 * @new: new entry to be added
 * @head: list head to add it before
 *
 * Insert a new entry before the specified head.
 * This is useful for implementing queues.
 */
static inline void list_add_tail(struct list_head *_new, struct list_head *head)
{
    __list_add(_new, head->prev, head);
}

static inline void __list_del(struct list_head * prev, struct list_head * next)
{
    next->prev = prev;
    prev->next = next;
}

static inline void list_del(struct list_head *entry)
{
    __list_del(entry->prev, entry->next);
    entry->next = (list_head*) LIST_POISON1;
    entry->prev = (list_head*) LIST_POISON2;
}

static 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 inline int list_empty(const struct list_head *head)
{
    return head->next == head;
}

static inline int list_empty_careful(const struct list_head *head)
{
    struct list_head *next = head->next;
    return (next == head) && (next == head->prev);
}

static 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;
}

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