diff options
Diffstat (limited to 'source4')
| -rw-r--r-- | source4/lib/ldb/include/dlinklist.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/source4/lib/ldb/include/dlinklist.h b/source4/lib/ldb/include/dlinklist.h index 62f885dd30..0bd80a79df 100644 --- a/source4/lib/ldb/include/dlinklist.h +++ b/source4/lib/ldb/include/dlinklist.h @@ -51,6 +51,22 @@ do { \ if ((p) && ((p) != (list))) (p)->next = (p)->prev = NULL; \ } while (0) +#define DLIST_HEAD(p, result_head) \ +do { \ + (result_head) = (p); \ + while (DLIST_PREV(result_head)) (result_head) = (result_head)->prev; \ +} while(0) + +/* return the last element in the list */ +#define DLIST_TAIL(list, result_tail) \ +do { \ + (result_tail) = (list); \ + while ((result_tail) && (result_tail)->next) (result_tail) = (result_tail)->next; \ +} while (0); + +/* return the previous element in the list. */ +#define DLIST_PREV(p) ((p)?(p)->prev:NULL) + /* promote an element to the top of the list */ #define DLIST_PROMOTE(list, p) \ do { \ |