--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/oops/InstanceMirrorKlass.java	Wed Mar 30 07:47:19 2011 -0700
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2011, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package sun.jvm.hotspot.oops;
+
+import java.io.*;
+import java.util.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.memory.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.utilities.*;
+
+// An InstanceKlass is the VM level representation of a Java class.
+
+public class InstanceMirrorKlass extends InstanceKlass {
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
+    // Just make sure it's there for now
+    Type type = db.lookupType("instanceMirrorKlass");
+  }
+
+  InstanceMirrorKlass(OopHandle handle, ObjectHeap heap) {
+    super(handle, heap);
+  }
+
+  public long getObjectSize(Oop o) {
+    return java_lang_Class.getOopSize(o) * VM.getVM().getAddressSize();
+  }
+
+  public void iterateNonStaticFields(OopVisitor visitor, Oop obj) {
+    super.iterateNonStaticFields(visitor, obj);
+    // Fetch the real klass from the mirror object
+    Klass klass = java_lang_Class.asKlass(obj);
+    if (klass instanceof InstanceKlass) {
+      ((InstanceKlass)klass).iterateStaticFields(visitor);
+    }
+  }
+}