DtDisconnectable.h

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/****************************************************************************** 
** Copyright (c) 2016 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 


#pragma once

#include <vrvUtil/vrvUtil.h>

#include <boost/function.hpp>
#include <boost/signals2.hpp>

#include <tbb/spin_mutex.h>

namespace makVrv
{
   class DT_DLL_VRVUTIL DtDisconnectable
   {
   public:
      DtDisconnectable();

      virtual ~DtDisconnectable();

      virtual boost::signals2::connection addDisconnectFunction(
         const boost::function<void ()>& callback);

      virtual bool callDisconnectFunctions();

   protected:
      enum State { NotUsed, InUse, Disconnected };

      typedef tbb::spin_mutex Mutex;

      mutable Mutex myMutex;
      State myDisconnectedState;
      boost::signals2::signal<void ()> myDisconnectSignal;
   };
}