From 58090b340c54e555a0162f21bfd11e58d13398a0 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Sun, 4 Sep 2011 19:48:20 -0400 Subject: [PATCH] list: Add cds_list_first_entry Signed-off-by: Mathieu Desnoyers --- urcu/list.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/urcu/list.h b/urcu/list.h index 7d2a9a1..04dad80 100644 --- a/urcu/list.h +++ b/urcu/list.h @@ -126,12 +126,15 @@ cds_list_splice (struct cds_list_head *add, struct cds_list_head *head) } } - /* Get typed element from list at a given position. */ #define cds_list_entry(ptr, type, member) \ ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member))) +/* Get first entry from a list. */ +#define cds_list_first_entry(ptr, type, member) \ + cds_list_entry((ptr)->next, type, member) + /* Iterate forward over the elements of the list. */ #define cds_list_for_each(pos, head) \ -- 2.34.1