#ifndef _LIST_H
#define _LIST_H
+#include <util/util.h>
+
struct list_item {
struct list_item *prev, *next;
};
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
+#define list_for_each(_list, _pos) \
+ for (_pos = (_list)->head.next; _pos != ((_list)->head); _pos = _pos->next)
-#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#endif
+#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(list, pos) \
- for (pos = (list)->head.next; pos != ((list)->head); pos = pos->next)
+#define list_prev_entry(_list, _pos, _member) \
+ list_entry(_pos->_member.prev, typeof(*_pos), _member, _list)
-#define list_entry(ptr, type, member) \
- container_of(ptr, type, member)
+#define list_next_entry(_list, _pos, _member) \
+ list_entry(_pos->_member.next, typeof(*_pos), _member, _list)
-#define list_for_each_entry(list, pos, member) \
- for (pos = list_entry((list)->head.next, typeof(*pos), member); \
- &pos->member != &(list)->head; \
- pos = list_entry(pos->member.next, typeof(*pos), member))
+#define list_for_each_entry(_list, _pos, _member) \
+ for (_pos = list_entry((_list)->head.next, typeof(*_pos), _member, _list); \
+ _pos; _pos = list_next_entry(_list, _pos, _member))
#define list_for_each_entry_continue(_list, _pos, _member) \
- for (; &_pos->_member != &(_list)->head; \
- _pos = list_entry(_pos->_member.next, typeof(*_pos), _member))
+ for (; _pos; _pos = list_next_entry(_list, _pos, _member))
+
+#define list_for_each_entry_safe(_list, _pos, _tmp, _member) \
+ for (_pos = container_of((_list)->head.next, typeof(*_pos), _member), \
+ _tmp = container_of(_pos->_member.next, typeof(*_pos), \
+ _member); \
+ &_pos->_member != &(_list)->head; \
+ _pos = _tmp, \
+ _tmp = container_of(_tmp->_member.next, typeof(*_pos), _member))
-#define STATIC_LIST(_list) static struct list _list = { \
+#define DEFINE_LIST(_list) struct list _list = { \
.head = { \
.next = &_list.head, \
.prev = &_list.head \
} \
}
+#define STATIC_LIST(_list) static DEFINE_LIST(_list)
+
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);