From: José Fonseca <jfonseca@vmware.com>
Date: Mon, 23 Mar 2009 12:05:07 +0000 (+0000)
Subject: util: Add a new macro for testing empty lists.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3708aaeaff5041040783bd252768fadf2b794ec2;p=mesa.git

util: Add a new macro for testing empty lists.
---

diff --git a/src/gallium/auxiliary/util/u_double_list.h b/src/gallium/auxiliary/util/u_double_list.h
index d108d92e52b..53bb1342ddc 100644
--- a/src/gallium/auxiliary/util/u_double_list.h
+++ b/src/gallium/auxiliary/util/u_double_list.h
@@ -95,5 +95,8 @@ struct list_head
 #define LIST_ENTRY(__type, __item, __field)   \
     ((__type *)(((char *)(__item)) - offsetof(__type, __field)))
 
+#define LIST_IS_EMPTY(__list)                   \
+    ((__list)->next == (__list))
+
 
 #endif /*_U_DOUBLE_LIST_H_*/