--- old/src/share/vm/utilities/dtrace.hpp	2010-11-10 13:21:34.000000000 +0100
+++ new/src/share/vm/utilities/dtrace.hpp	2010-11-10 13:21:34.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 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_UTILITIES_DTRACE_HPP
+#define SHARE_VM_UTILITIES_DTRACE_HPP
+
 #if defined(SOLARIS) && defined(DTRACE_ENABLED)
 
 #include <sys/sdt.h>
@@ -129,3 +132,5 @@
   HS_DTRACE_PROBE_N(provider,name,((uintptr_t)a0,(uintptr_t)a1,(uintptr_t)a2,\
     (uintptr_t)a3,(uintptr_t)a4,(uintptr_t)a5,(uintptr_t)a6,(uintptr_t)a7,\
     (uintptr_t)a8,(uintptr_t)a9))
+
+#endif // SHARE_VM_UTILITIES_DTRACE_HPP