--- a/hotspot/src/share/vm/gc_implementation/g1/dirtyCardQueue.hpp	Sat Jul 31 15:10:59 2010 +0100
+++ b/hotspot/src/share/vm/gc_implementation/g1/dirtyCardQueue.hpp	Mon Aug 02 12:51:43 2010 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -123,7 +123,21 @@
                                          int stop_at = 0,
                                          bool during_pause = false);
 
-  bool apply_closure_to_completed_buffer_helper(int worker_i,
+  // If there exists some completed buffer, pop it, then apply the
+  // specified closure to all its elements, nulling out those elements
+  // processed.  If all elements are processed, returns "true".  If no
+  // completed buffers exist, returns false.  If a completed buffer exists,
+  // but is only partially completed before a "yield" happens, the
+  // partially completed buffer (with its processed elements set to NULL)
+  // is returned to the completed buffer set, and this call returns false.
+  bool apply_closure_to_completed_buffer(CardTableEntryClosure* cl,
+                                         int worker_i = 0,
+                                         int stop_at = 0,
+                                         bool during_pause = false);
+
+  // Helper routine for the above.
+  bool apply_closure_to_completed_buffer_helper(CardTableEntryClosure* cl,
+                                                int worker_i,
                                                 BufferNode* nd);
 
   BufferNode* get_completed_buffer(int stop_at);
@@ -136,6 +150,9 @@
     return &_shared_dirty_card_queue;
   }
 
+  // Deallocate any completed log buffers
+  void clear();
+
   // If a full collection is happening, reset partial logs, and ignore
   // completed ones: the full collection will make them all irrelevant.
   void abandon_logs();