--- old/src/share/vm/runtime/statSampler.hpp	2010-11-10 13:19:48.000000000 +0100
+++ new/src/share/vm/runtime/statSampler.hpp	2010-11-10 13:19:48.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2002, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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_STATSAMPLER_HPP
+#define SHARE_VM_RUNTIME_STATSAMPLER_HPP
+
+#include "runtime/perfData.hpp"
+#include "runtime/task.hpp"
+
 class StatSamplerTask;
 
 /*
@@ -60,3 +66,5 @@
 };
 
 void statSampler_exit();
+
+#endif // SHARE_VM_RUNTIME_STATSAMPLER_HPP