X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=blobdiff_plain;f=src%2Flib%2Fkernel%2Flist.h;h=82efbb5b1c19053a4b7c68723f358bb413ece4c2;hp=2388f9acdbf8e553d79ff6a27b93703020a3739e;hb=a03618133f7df0954802a470a4bee7674f7aed45;hpb=f294e7e618e110f8203ea7cf800acb2e1334774b

diff --git a/src/lib/kernel/list.h b/src/lib/kernel/list.h
index 2388f9a..82efbb5 100644
--- a/src/lib/kernel/list.h
+++ b/src/lib/kernel/list.h
@@ -109,6 +109,19 @@ struct list
         ((STRUCT *) ((uint8_t *) &(LIST_ELEM)->next     \
                      - offsetof (STRUCT, MEMBER.next)))
 
+/* List initialization.
+
+   A list may be initialized by calling list_init():
+
+       struct list my_list;
+       list_init (&my_list);
+
+   or with an initializer using LIST_INITIALIZER:
+
+       struct list my_list = LIST_INITIALIZER (my_list); */
+#define LIST_INITIALIZER(NAME) { { NULL, &(NAME).tail }, \
+                                 { &(NAME).head, NULL } }
+
 void list_init (struct list *);
 
 /* List traversal. */