--- old/src/share/vm/runtime/objectMonitor.hpp	2010-11-16 18:19:53.000000000 +0100
+++ new/src/share/vm/runtime/objectMonitor.hpp	2010-11-16 18:19:53.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2010, 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
@@ -22,6 +22,12 @@
  *
  */
 
+#ifndef SHARE_VM_RUNTIME_OBJECTMONITOR_HPP
+#define SHARE_VM_RUNTIME_OBJECTMONITOR_HPP
+
+#include "runtime/os.hpp"
+#include "runtime/perfData.hpp"
+
 
 // ObjectWaiter serves as a "proxy" or surrogate thread.
 // TODO-FIXME: Eliminate ObjectWaiter and use the thread-specific
@@ -306,3 +312,5 @@
 #undef  TEVENT
 #define TEVENT(nom) {;}
 
+
+#endif // SHARE_VM_RUNTIME_OBJECTMONITOR_HPP