--- a/src/share/vm/oops/instanceRefKlass.hpp	Fri Aug 31 16:39:35 2012 -0700
+++ b/src/share/vm/oops/instanceRefKlass.hpp	Sat Sep 01 13:25:18 2012 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, 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
@@ -27,7 +27,7 @@
 
 #include "oops/instanceKlass.hpp"
 
-// An instanceRefKlass is a specialized instanceKlass for Java
+// An instanceRefKlass is a specialized InstanceKlass for Java
 // classes that are subclasses of java/lang/ref/Reference.
 //
 // These classes are used to implement soft/weak/final/phantom
@@ -44,20 +44,24 @@
 // and the pending list lock object in the same class is notified.
 
 
-class instanceRefKlass: public instanceKlass {
+class instanceRefKlass: public InstanceKlass {
+  friend class InstanceKlass;
+
+  // Constructor
+  instanceRefKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
+    : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
+
  public:
+  instanceRefKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
   // Type testing
   bool oop_is_instanceRef() const             { return true; }
 
-  // Casting from klassOop
-  static instanceRefKlass* cast(klassOop k) {
-    assert(k->klass_part()->oop_is_instanceRef(), "cast to instanceRefKlass");
-    return (instanceRefKlass*) k->klass_part();
+  // Casting from Klass*
+  static instanceRefKlass* cast(Klass* k) {
+    assert(k->oop_is_instanceRef(), "cast to instanceRefKlass");
+    return (instanceRefKlass*) k;
   }
 
-  // allocation
-  DEFINE_ALLOCATE_PERMANENT(instanceRefKlass);
-
   // Garbage collection
   int  oop_adjust_pointers(oop obj);
   void oop_follow_contents(oop obj);
@@ -65,10 +69,10 @@
   // Parallel Scavenge and Parallel Old
   PARALLEL_GC_DECLS
 
-  int oop_oop_iterate(oop obj, OopClosure* blk) {
+  int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
     return oop_oop_iterate_v(obj, blk);
   }
-  int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
+  int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
     return oop_oop_iterate_v_m(obj, blk, mr);
   }
 
@@ -93,7 +97,7 @@
 
   // Update non-static oop maps so 'referent', 'nextPending' and
   // 'discovered' will look like non-oops
-  static void update_nonstatic_oop_maps(klassOop k);
+  static void update_nonstatic_oop_maps(Klass* k);
 
  public:
   // Verification