Mesa (master): util/list: Add list_foreach_entry_from_safe

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: f40f8f623a021d791886ca8e1a159e34cfcb4bfb
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f40f8f623a021d791886ca8e1a159e34cfcb4bfb

Author: Caio Marcelo de Oliveira Filho <caio.oliveira at intel.com>
Date:   Mon Sep 16 18:21:06 2019 -0700

util/list: Add list_foreach_entry_from_safe

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Reviewed-by: Eric Anholt <eric at anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5019>

---

 src/util/list.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/util/list.h b/src/util/list.h
index 17800e4ed4e..d50eb1ea5dd 100644
--- a/src/util/list.h
+++ b/src/util/list.h
@@ -241,6 +241,13 @@ static inline void list_validate(const struct list_head *list)
 	&pos->member != (head);                                         \
 	pos = LIST_ENTRY(type, pos->member.next, member))
 
+#define list_for_each_entry_from_safe(type, pos, start, head, member)   \
+   for (type *pos = LIST_ENTRY(type, (start), member),                  \
+	     *__next = LIST_ENTRY(type, pos->member.next, member);      \
+	&pos->member != (head);                                         \
+	pos = __next,                                                   \
+	__next = LIST_ENTRY(type, __next->member.next, member))
+
 #define list_for_each_entry_from_rev(type, pos, start, head, member)    \
    for (type *pos = LIST_ENTRY(type, (start), member);                  \
 	&pos->member != (head);                                         \