src/share/vm/runtime/mutex.hpp

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1998, 2008, 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -20,10 +20,17 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 
+#ifndef SHARE_VM_RUNTIME_MUTEX_HPP
+#define SHARE_VM_RUNTIME_MUTEX_HPP
+
+#include "memory/allocation.hpp"
+#include "runtime/os.hpp"
+#include "utilities/histogram.hpp"
+
 // The SplitWord construct allows us to colocate the contention queue
 // (cxq) with the lock-byte.  The queue elements are ParkEvents, which are
 // always aligned on 256-byte addresses - the least significant byte of
 // a ParkEvent is always 0.  Colocating the lock-byte with the queue
 // allows us to easily avoid what would otherwise be a race in lock()

@@ -263,5 +270,7 @@
      ShouldNotReachHere() ;
      return false ;
    }
 };
 
+
+#endif // SHARE_VM_RUNTIME_MUTEX_HPP