Add hash_apply() function.

[pintos-anon] / src / lib / kernel / hash.h

diff --git a/src/lib/kernel/hash.h b/src/lib/kernel/hash.h
index b6423386c0929c122b76b24965890c70df6fdf15..7f25c1025769327a88eeee4e202dffa20f28cedd 100644 (file)
--- a/src/lib/kernel/hash.h
+++ b/src/lib/kernel/hash.h
@@ -50,6 +50,10 @@ typedef bool hash_less_func (const struct hash_elem *a,
                              const struct hash_elem *b,
                              void *aux);
 
+/* Performs some operation on hash element E, given auxiliary
+   data AUX. */
+typedef void hash_action_func (struct hash_elem *e, void *aux);
+
 /* Hash table. */
 struct hash 
   {
@@ -71,8 +75,8 @@ struct hash_iterator
 
 /* Basic life cycle. */
 bool hash_init (struct hash *, hash_hash_func *, hash_less_func *, void *aux);
-void hash_clear (struct hash *);
-void hash_destroy (struct hash *);
+void hash_clear (struct hash *, hash_action_func *);
+void hash_destroy (struct hash *, hash_action_func *);
 
 /* Search, insertion, deletion. */
 struct hash_elem *hash_insert (struct hash *, struct hash_elem *);
@@ -81,6 +85,7 @@ struct hash_elem *hash_find (struct hash *, struct hash_elem *);
 struct hash_elem *hash_delete (struct hash *, struct hash_elem *);
 
 /* Iteration. */
+void hash_apply (struct hash *, hash_action_func *);
 void hash_first (struct hash_iterator *, struct hash *);
 struct hash_elem *hash_next (struct hash_iterator *);
 struct hash_elem *hash_cur (struct hash_iterator *);