--- a/hotspot/src/share/vm/services/diagnosticCommand.hpp	Thu Jan 24 23:30:45 2013 -0800
+++ b/hotspot/src/share/vm/services/diagnosticCommand.hpp	Fri Jan 25 15:06:18 2013 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 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
@@ -178,7 +178,7 @@
 };
 #endif // INCLUDE_SERVICES
 
-// See also: inspeactheap in attachListener.cpp
+// See also: inspectheap in attachListener.cpp
 class ClassHistogramDCmd : public DCmdWithParser {
 protected:
   DCmdArgument<bool> _all;
@@ -197,6 +197,27 @@
   virtual void execute(TRAPS);
 };
 
+class ClassStatsDCmd : public DCmdWithParser {
+protected:
+  DCmdArgument<bool> _all;
+  DCmdArgument<bool> _csv;
+  DCmdArgument<bool> _help;
+  DCmdArgument<char*> _columns;
+public:
+  ClassStatsDCmd(outputStream* output, bool heap);
+  static const char* name() {
+    return "GC.class_stats";
+  }
+  static const char* description() {
+    return "Provide statistics about Java class meta data. Requires -XX:+UnlockDiagnosticVMOptions.";
+  }
+  static const char* impact() {
+    return "High: Depends on Java heap size and content.";
+  }
+  static int num_arguments();
+  virtual void execute(TRAPS);
+};
+
 // See also: thread_dump in attachListener.cpp
 class ThreadDumpDCmd : public DCmdWithParser {
 protected: