--- a/src/share/vm/oops/klass.cpp	Tue Mar 05 21:58:51 2013 +0100
+++ b/src/share/vm/oops/klass.cpp	Tue Mar 05 23:44:54 2013 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, 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
@@ -29,6 +29,7 @@
 #include "classfile/vmSymbols.hpp"
 #include "gc_implementation/shared/markSweep.inline.hpp"
 #include "gc_interface/collectedHeap.inline.hpp"
+#include "memory/heapInspection.hpp"
 #include "memory/metadataFactory.hpp"
 #include "memory/oopFactory.hpp"
 #include "memory/resourceArea.hpp"
@@ -37,11 +38,12 @@
 #include "oops/oop.inline2.hpp"
 #include "runtime/atomic.hpp"
 #include "utilities/stack.hpp"
-#ifndef SERIALGC
+#include "utilities/macros.hpp"
+#if INCLUDE_ALL_GCS
 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
 #include "gc_implementation/parallelScavenge/psPromotionManager.hpp"
 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
-#endif
+#endif // INCLUDE_ALL_GCS
 
 void Klass::set_name(Symbol* n) {
   _name = n;
@@ -624,6 +626,17 @@
   obj->print_address_on(st);
 }
 
+#if INCLUDE_SERVICES
+// Size Statistics
+void Klass::collect_statistics(KlassSizeStats *sz) const {
+  sz->_klass_bytes = sz->count(this);
+  sz->_mirror_bytes = sz->count(java_mirror());
+  sz->_secondary_supers_bytes = sz->count_array(secondary_supers());
+
+  sz->_ro_bytes += sz->_secondary_supers_bytes;
+  sz->_rw_bytes += sz->_klass_bytes + sz->_mirror_bytes;
+}
+#endif // INCLUDE_SERVICES
 
 // Verification