--- old/src/os/windows/vm/hpi_windows.hpp	2010-10-28 13:50:02.000000000 +0200
+++ new/src/os/windows/vm/hpi_windows.hpp	2010-10-28 13:50:02.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2005, 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 OS_WINDOWS_VM_HPI_WINDOWS_HPP
+#define OS_WINDOWS_VM_HPI_WINDOWS_HPP
+
 // Win32 delegates these to the HPI.  Solaris provides its own
 // implementation without using the HPI (for Interrupitble I/O).
 
@@ -168,3 +171,5 @@
         ("name = %p",
          name),
         (name));
+
+#endif // OS_WINDOWS_VM_HPI_WINDOWS_HPP