diff options
Diffstat (limited to 'libglusterfs/src/list.h')
| -rw-r--r-- | libglusterfs/src/list.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/libglusterfs/src/list.h b/libglusterfs/src/list.h index 04b4047129f..894fa3012cf 100644 --- a/libglusterfs/src/list.h +++ b/libglusterfs/src/list.h @@ -179,15 +179,36 @@ list_append_init (struct list_head *list, struct list_head *head) INIT_LIST_HEAD (list); } +static inline int +list_is_last (struct list_head *list, struct list_head *head) +{ + return (list->next == head); +} + +static inline int +list_is_singular(struct list_head *head) +{ + return !list_empty(head) && (head->next == head->prev); +} #define list_entry(ptr, type, member) \ ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member))) +#define list_first_entry(ptr, type, member) \ + list_entry((ptr)->next, type, member) + +#define list_last_entry(ptr, type, member) \ + list_entry((ptr)->prev, type, member) + +#define list_next_entry(pos, member) \ + list_entry((pos)->member.next, typeof(*(pos)), member) + +#define list_prev_entry(pos, member) \ + list_entry((pos)->member.prev, typeof(*(pos)), member) #define list_for_each(pos, head) \ for (pos = (head)->next; pos != (head); pos = pos->next) - #define list_for_each_entry(pos, head, member) \ for (pos = list_entry((head)->next, typeof(*pos), member); \ &pos->member != (head); \ |