From 7663df377016cf7b95001aec893006647175ae4a Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 28 Jan 2015 00:34:58 +0100 Subject: list: add macro for iterating through a list an item is in, skipping the item --- src/shared/list.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'src/shared/list.h') diff --git a/src/shared/list.h b/src/shared/list.h index f0458b54e2..7ed63188ba 100644 --- a/src/shared/list.h +++ b/src/shared/list.h @@ -138,6 +138,16 @@ #define LIST_FOREACH_AFTER(name,i,p) \ for ((i) = (p)->name##_next; (i); (i) = (i)->name##_next) +/* Iterate through all the members of the list p is included in, but skip over p */ +#define LIST_FOREACH_OTHERS(name,i,p) \ + for (({ \ + (i) = (p); \ + while ((i) && (i)->name##_prev) \ + (i) = (i)->name##_prev; \ + }); \ + (i); \ + (i) = (i)->name##_next == (p) ? (p)->name##_next : (i)->name##_next) + /* Loop starting from p->next until p->prev. p can be adjusted meanwhile. */ #define LIST_LOOP_BUT_ONE(name,i,head,p) \ -- cgit v1.2.3-54-g00ecf