X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Flist.h;h=55e0d0add3b34ee18fd50aca3ca26496dffdf177;hb=67680b012be30d9c26eab999b83b08c6eb32dbd2;hp=ddb0e6592babd20e9108e6d22b7ace2dc34af7f4;hpb=b3907fbc6c74ddad7507d0f7abb1f5a2528cd2be;p=sliver-openvswitch.git

diff --git a/lib/list.h b/lib/list.h
index ddb0e6592..55e0d0add 100644
--- a/lib/list.h
+++ b/lib/list.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,21 +47,31 @@ struct list *list_pop_front(struct list *);
 struct list *list_pop_back(struct list *);
 
 /* List elements. */
-struct list *list_front(struct list *);
-struct list *list_back(struct list *);
+struct list *list_front(const struct list *);
+struct list *list_back(const struct list *);
 
 /* List properties. */
 size_t list_size(const struct list *);
 bool list_is_empty(const struct list *);
+bool list_is_singleton(const struct list *);
+bool list_is_short(const struct list *);
 
 #define LIST_FOR_EACH(ITER, MEMBER, LIST)                               \
     for (ASSIGN_CONTAINER(ITER, (LIST)->next, MEMBER);                  \
          &(ITER)->MEMBER != (LIST);                                     \
          ASSIGN_CONTAINER(ITER, (ITER)->MEMBER.next, MEMBER))
+#define LIST_FOR_EACH_CONTINUE(ITER, MEMBER, LIST)                      \
+    for (ASSIGN_CONTAINER(ITER, (ITER)->MEMBER.next, MEMBER);           \
+         &(ITER)->MEMBER != (LIST);                                     \
+         ASSIGN_CONTAINER(ITER, (ITER)->MEMBER.next, MEMBER))
 #define LIST_FOR_EACH_REVERSE(ITER, MEMBER, LIST)                       \
     for (ASSIGN_CONTAINER(ITER, (LIST)->prev, MEMBER);                  \
          &(ITER)->MEMBER != (LIST);                                     \
          ASSIGN_CONTAINER(ITER, (ITER)->MEMBER.prev, MEMBER))
+#define LIST_FOR_EACH_REVERSE_CONTINUE(ITER, MEMBER, LIST)              \
+    for (ASSIGN_CONTAINER(ITER, (ITER)->MEMBER.prev, MEMBER);           \
+         &(ITER)->MEMBER != (LIST);                                     \
+         ASSIGN_CONTAINER(ITER, (ITER)->MEMBER.prev, MEMBER))
 #define LIST_FOR_EACH_SAFE(ITER, NEXT, MEMBER, LIST)            \
     for (ASSIGN_CONTAINER(ITER, (LIST)->next, MEMBER);          \
          (&(ITER)->MEMBER != (LIST)                             \