--- old/src/share/vm/services/diagnosticCommand.hpp	2015-01-07 15:16:53.000000000 -0800
+++ new/src/share/vm/services/diagnosticCommand.hpp	2015-01-07 15:16:53.000000000 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2015, 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
@@ -271,6 +271,22 @@
   virtual void execute(DCmdSource source, TRAPS);
 };
 
+
+class ClassHierarchyDCmd : public DCmd {
+public:
+  ClassHierarchyDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
+  static const char* name() {
+    return "VM.class_hierarchy";
+  }
+  static const char* description() {
+    return "Print a list of all loaded classes, indented to show the class hiearchy.";
+  }
+  static const char* impact() {
+      return "Medium: Depends on number of loaded classes.";
+  }
+  virtual void execute(DCmdSource source, TRAPS);
+};
+
 // See also: thread_dump in attachListener.cpp
 class ThreadDumpDCmd : public DCmdWithParser {
 protected: