--- old/src/share/vm/services/g1MemoryPool.hpp	2010-10-28 14:02:46.000000000 +0200
+++ new/src/share/vm/services/g1MemoryPool.hpp	2010-10-28 14:02:46.000000000 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 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 +22,14 @@
  *
  */
 
+#ifndef SHARE_VM_SERVICES_G1MEMORYPOOL_HPP
+#define SHARE_VM_SERVICES_G1MEMORYPOOL_HPP
+
+#ifndef SERIALGC
+#include "services/memoryPool.hpp"
+#include "services/memoryUsage.hpp"
+#endif
+
 class G1CollectedHeap;
 
 // This file contains the three classes that represent the memory
@@ -198,3 +206,5 @@
   }
   MemoryUsage get_memory_usage();
 };
+
+#endif // SHARE_VM_SERVICES_G1MEMORYPOOL_HPP