perf tools: Add support to install perf python extension
[linux-2.6.git] / tools / firewire / list.h
1 struct list {
2         struct list *next, *prev;
3 };
4
5 static inline void
6 list_init(struct list *list)
7 {
8         list->next = list;
9         list->prev = list;
10 }
11
12 static inline int
13 list_empty(struct list *list)
14 {
15         return list->next == list;
16 }
17
18 static inline void
19 list_insert(struct list *link, struct list *new_link)
20 {
21         new_link->prev          = link->prev;
22         new_link->next          = link;
23         new_link->prev->next    = new_link;
24         new_link->next->prev    = new_link;
25 }
26
27 static inline void
28 list_append(struct list *list, struct list *new_link)
29 {
30         list_insert((struct list *)list, new_link);
31 }
32
33 static inline void
34 list_prepend(struct list *list, struct list *new_link)
35 {
36         list_insert(list->next, new_link);
37 }
38
39 static inline void
40 list_remove(struct list *link)
41 {
42         link->prev->next = link->next;
43         link->next->prev = link->prev;
44 }
45
46 #define list_entry(link, type, member) \
47         ((type *)((char *)(link)-(unsigned long)(&((type *)0)->member)))
48
49 #define list_head(list, type, member)           \
50         list_entry((list)->next, type, member)
51
52 #define list_tail(list, type, member)           \
53         list_entry((list)->prev, type, member)
54
55 #define list_next(elm, member)                                  \
56         list_entry((elm)->member.next, typeof(*elm), member)
57
58 #define list_for_each_entry(pos, list, member)                  \
59         for (pos = list_head(list, typeof(*pos), member);       \
60              &pos->member != (list);                            \
61              pos = list_next(pos, member))
62