diff options
| author | Fabiano Fidêncio <fidencio@redhat.com> | 2017-03-21 20:56:38 +0100 |
|---|---|---|
| committer | Jakub Hrozek <jhrozek@redhat.com> | 2017-03-29 14:00:17 +0200 |
| commit | 34228050af1e25706f61ec9df648852284b61c2b (patch) | |
| tree | d4e7042066e9e2da3a1325c38ed4babffaa1256f | |
| parent | fb81f337b68c85471c3f5140850dccf549a2d0ac (diff) | |
| download | sssd-34228050af1e25706f61ec9df648852284b61c2b.tar.gz sssd-34228050af1e25706f61ec9df648852284b61c2b.tar.xz sssd-34228050af1e25706f61ec9df648852284b61c2b.zip | |
DLINKLIST: Add DLIST_FOR_EACH_SAFE macro
This macro, as DLIST_FOR_EACH, iterates over the whole list. The main
difference between both is that in the _SAFE version the pointer to the
next list node is stored, allowing us to delete the current node safely.
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Sumit Bose <sbose@redhat.com>
Reviewed-by: Pavel Březina <pbrezina@redhat.com>
| -rw-r--r-- | src/util/dlinklist.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/util/dlinklist.h b/src/util/dlinklist.h index 4f6aef830..017c60468 100644 --- a/src/util/dlinklist.h +++ b/src/util/dlinklist.h @@ -147,4 +147,9 @@ do { \ #define DLIST_FOR_EACH(p, list) \ for ((p) = (list); (p) != NULL; (p) = (p)->next) +#define DLIST_FOR_EACH_SAFE(p, q, list) \ + for ((p) = (list), (q) = (p) != NULL ? (p)->next : NULL; \ + (p) != NULL; \ + (p) = (q), (q) = (p) != NULL ? (p)->next : NULL) + #endif /* _DLINKLIST_H */ |