--- old/src/share/vm/gc_implementation/shared/gSpaceCounters.hpp	2010-11-10 13:12:30.000000000 +0100
+++ new/src/share/vm/gc_implementation/shared/gSpaceCounters.hpp	2010-11-10 13:12:30.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 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 +22,15 @@
  *
  */
 
+#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP
+
+#ifndef SERIALGC
+#include "gc_implementation/shared/generationCounters.hpp"
+#include "memory/generation.hpp"
+#include "runtime/perfData.hpp"
+#endif
+
 // A GSpaceCounter is a holder class for performance counters
 // that track a space;
 
@@ -100,3 +109,5 @@
       return _gen->used();
     }
 };
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP