--- old/src/share/vm/utilities/histogram.hpp	2010-11-16 18:22:32.000000000 +0100
+++ new/src/share/vm/utilities/histogram.hpp	2010-11-16 18:22:32.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2000, 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 +22,22 @@
  *
  */
 
+#ifndef SHARE_VM_UTILITIES_HISTOGRAM_HPP
+#define SHARE_VM_UTILITIES_HISTOGRAM_HPP
+
+#include "memory/allocation.hpp"
+#include "runtime/os.hpp"
+#include "utilities/growableArray.hpp"
+#ifdef TARGET_OS_FAMILY_linux
+# include "os_linux.inline.hpp"
+#endif
+#ifdef TARGET_OS_FAMILY_solaris
+# include "os_solaris.inline.hpp"
+#endif
+#ifdef TARGET_OS_FAMILY_windows
+# include "os_windows.inline.hpp"
+#endif
+
 // This class provides a framework for collecting various statistics.
 // The current implementation is oriented towards counting invocations
 // of various types, but that can be easily changed.
@@ -89,3 +105,5 @@
 };
 
 #endif
+
+#endif // SHARE_VM_UTILITIES_HISTOGRAM_HPP