Module: xenomai-3
Branch: wip/drivers
Commit: c35e76631e22a17b3f1387e7e95efa08b8accc96
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=c35e76631e22a17b3f1387e7e95efa08b8accc96
Author: Philippe Gerum <r...@xenomai.org>
Date: Wed Sep 28 18:26:38 2016 +0200
boilerplate/list: add list_{prev, next}_entry() accessors
---
include/boilerplate/private-list.h | 18 ++++++++++++++++++
include/boilerplate/shared-list.h | 24 ++++++++++++++++++++++++
2 files changed, 42 insertions(+)
diff --git a/include/boilerplate/private-list.h
b/include/boilerplate/private-list.h
index f5aafac..72f1e4c 100644
--- a/include/boilerplate/private-list.h
+++ b/include/boilerplate/private-list.h
@@ -146,6 +146,24 @@ static inline int pvlist_heading_p(const struct pvholder
*holder,
#define pvlist_last_entry(list, type, member) \
pvlist_entry((list)->head.prev, type, member)
+#define pvlist_prev_entry(pos, list, member) \
+ ({ \
+ typeof(*pos) *__prev = NULL; \
+ if ((list)->head.next != &(pos)->member) \
+ __prev = pvlist_entry((pos)->member.prev, \
+ typeof(*pos), member); \
+ __prev; \
+ })
+
+#define pvlist_next_entry(pos, list, member) \
+ ({ \
+ typeof(*pos) *__next = NULL; \
+ if ((list)->head.prev != &(pos)->member) \
+ __next = pvlist_entry((pos)->member.next, \
+ typeof(*pos), member); \
+ __next; \
+ })
+
#define pvlist_pop_entry(list, type, member) ({
\
struct pvholder *__holder = pvlist_pop(list); \
pvlist_entry(__holder, type, member); })
diff --git a/include/boilerplate/shared-list.h
b/include/boilerplate/shared-list.h
index 0f88d6f..741dfc0 100644
--- a/include/boilerplate/shared-list.h
+++ b/include/boilerplate/shared-list.h
@@ -245,6 +245,30 @@ static inline int list_heading_p(const struct holder
*holder,
#define list_last_entry(list, type, member) \
__list_last_entry(__main_heap, list, type, member)
+#define __list_prev_entry(heap, pos, list, member) \
+ ({ \
+ typeof(*pos) *__prev = NULL; \
+ if ((list)->head.next != __hoff(heap, &(pos)->member)) \
+ __prev = list_entry(__hptr((heap), \
+ (pos)->member.prev), typeof(*pos), member); \
+ __prev; \
+ })
+
+#define list_prev_entry(pos, list, member) \
+ __list_prev_entry(__main_heap, pos, list, member)
+
+#define __list_next_entry(heap, pos, list, member) \
+ ({ \
+ typeof(*pos) *__next = NULL; \
+ if ((list)->head.prev != __hoff(heap, &(pos)->member)) \
+ __next = list_entry(__hptr((heap), \
+ (pos)->member.next), typeof(*pos), member); \
+ __next; \
+ })
+
+#define list_next_entry(pos, list, member) \
+ __list_next_entry(__main_heap, pos, list, member)
+
#define __list_pop_entry(heap, list, type, member) ({ \
struct holder *__holder = __list_pop((heap), list); \
list_entry(__holder, type, member); })
_______________________________________________
Xenomai-git mailing list
Xenomai-git@xenomai.org
https://xenomai.org/mailman/listinfo/xenomai-git
