--- old/src/share/vm/runtime/memprofiler.hpp	2010-10-28 14:01:40.000000000 +0200
+++ new/src/share/vm/runtime/memprofiler.hpp	2010-10-28 14:01:39.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 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 +22,9 @@
  *
  */
 
+#ifndef SHARE_VM_RUNTIME_MEMPROFILER_HPP
+#define SHARE_VM_RUNTIME_MEMPROFILER_HPP
+
 // Prints periodic memory usage trace of HotSpot VM
 
 class MemProfilerTask;
@@ -40,3 +43,5 @@
   // Tester
   static bool is_active()     PRODUCT_RETURN0;
 };
+
+#endif // SHARE_VM_RUNTIME_MEMPROFILER_HPP