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    引言： #ifndef _LINUX_LIST_H#define _LI

 

 

Linux 中的链表

#ifndef _linux_list_h

/* 【程序编程相关:脚本技术的极致】

#define _linux_list_h 【推荐阅读:shell学习１－文件安全与权限】

 * under normal circumstances, used to verify that nobody uses 【扩展信息:http client and file】

 * these are non-null pointers that will result in page faults

 * non-initialized list entries.

 */

#define list_poison1  ((void *) 0x00100100)

#define list_poison2  ((void *) 0x00200200)

/*

 * simple doubly linked list implementation.

 *

 * some of the internal functions ("__xxx") are useful when

 * manipulating whole lists rather than single entries, as

 * sometimes we already know the next/prev entries and we can

 * generate better code by using them directly rather than

 * using the generic single-entry routines.

 */

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)

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