Add locker support to DebugMessageDispatchHandler

include/v8.h

 // Copyright 2007-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2722 matching lines @@
  * // V8 Now no longer locked.
  * \endcode
  */
 class V8EXPORT Unlocker {
  public:
   Unlocker();
   ~Unlocker();
 };
 
 
+class LockParameters;
+
 class V8EXPORT Locker {
  public:
-  Locker();
+  Locker(LockParameters* lock_parameters = NULL);
   ~Locker();
 
   /**
    * Start preemption.
    *
    * When preemption is started, a timer is fired every n milli seconds
    * that will switch between multiple threads that are in contention
    * for the V8 lock.
    */
   static void StartPreemption(int every_n_ms);
 
   /**
    * Stop preemption.
    */
   static void StopPreemption();
 
   /**
    * Returns whether or not the locker is locked by the current thread.
    */
   static bool IsLocked();
 
   /**
    * Returns whether v8::Locker is being used by this V8 instance.
    */
   static bool IsActive() { return active_; }
 
  private:
   bool has_lock_;
   bool top_level_;
+  bool effective_;
 
   static bool active_;
 
   // Disallow copying and assigning.
   Locker(const Locker&);
   void operator=(const Locker&);
 };
 
 
 
@@ skipping 441 matching lines @@
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef V8EXPORT_INLINE
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_