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| author | Rob Clark <robclark@freedesktop.org> | 2016-06-21 11:33:30 -0400 |
|---|---|---|
| committer | Rob Clark <robclark@freedesktop.org> | 2016-07-20 19:42:21 -0400 |
| commit | 1d1e01b2350e40711fcf19e200e46e2edfd887b2 (patch) | |
| tree | 43da328971e543feb35f4a02a2fe3aa43b71da92 | |
| parent | dd1f372001d4e6de648fa33b6b74d89aaa24cf75 (diff) | |
| download | drm-1d1e01b2350e40711fcf19e200e46e2edfd887b2.tar.gz | |
list: add first/last entry macros
Signed-off-by: Rob Clark <robclark@freedesktop.org>
| -rw-r--r-- | util_double_list.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/util_double_list.h b/util_double_list.h index 27e0761b..5d01f52d 100644 --- a/util_double_list.h +++ b/util_double_list.h @@ -98,6 +98,12 @@ static inline void list_delinit(struct list_head *item) #define LIST_ENTRY(__type, __item, __field) \ ((__type *)(((char *)(__item)) - offsetof(__type, __field))) +#define LIST_FIRST_ENTRY(__ptr, __type, __field) \ + LIST_ENTRY(__type, (__ptr)->next, __field) + +#define LIST_LAST_ENTRY(__ptr, __type, __field) \ + LIST_ENTRY(__type, (__ptr)->prev, __field) + #define LIST_IS_EMPTY(__list) \ ((__list)->next == (__list)) |