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#ifndef _LIST_H
#define _LIST_H
struct list_item {
struct list_item *prev, *next;
};
struct list {
struct list_item head;
};
#ifndef container_of
#define container_of(_ptr, _type, _member) ({ \
const typeof( ((_type *)0)->_member ) *__mptr = (_ptr); \
(_type *)( (char *)__mptr - offsetof(_type,_member) );})
#endif
#ifndef offsetof
#define offsetof(_type, _member) ((size_t) &((_type *)0)->_member)
#endif
#define list_for_each(_list, _pos) \
for (_pos = (_list)->head.next; _pos != ((_list)->head); _pos = _pos->next)
#define list_entry(_ptr, _type, _member, _list) \
(&container_of(_ptr, _type, _member)->_member == &((_list)->head) \
? NULL \
: container_of(_ptr, _type, _member))
#define list_for_each_entry(_list, _pos, _member) \
for (_pos = list_entry((_list)->head.next, typeof(*_pos), _member, _list); \
_pos; \
_pos = list_entry(_pos->_member.next, typeof(*_pos), _member, _list))
#define list_for_each_entry_continue(_list, _pos, _member) \
for (; _pos; \
_pos = list_entry(_pos->_member.next, typeof(*_pos), _member, _list))
#define STATIC_LIST(_list) static struct list _list = { \
.head = { \
.next = &_list.head, \
.prev = &_list.head \
} \
}
void list_init(struct list *list);
void list_insert_before(struct list_item *next, struct list_item *item);
void list_insert_after(struct list_item *prev, struct list_item *item);
void list_remove(struct list_item *item);
static inline void list_add(struct list *list, struct list_item *item)
{
list_insert_after(&list->head, item);
}
static inline void list_add_tail(struct list *list, struct list_item *item)
{
list_insert_before(&list->head, item);
}
#endif /* _LIST_H */
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