preloadCommandManager.h

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/*******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/



#pragma once

#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>
#include <vantageTerrainImplementation/vantageTerrainImplementationUtil.h>

#include <tbb/tbb_thread.h>
#include <tbb/mutex.h>

class DtActivePageTracker;

class DT_DLL_vantageTerrainImplementation DtPreloadCommandManager
{
public:

   DtPreloadCommandManager(DtActivePageTracker* pageTracker, 
      const int defaultPriority);

   ~DtPreloadCommandManager();

   virtual void tick();

   virtual void addPreloadGeometry(
      const DtTerrainPagingGeometryList& geometryList, 
      DtTerrainIntersectIDType intersectId);

   virtual void startPreloadCommandThread();
   void stopPreloadCommandThread();

   bool threadShouldExit() const;

   void shutdown();

protected:

   static void threadMain(DtPreloadCommandManager* commandManager);

   DtActivePageTracker* myPageTracker;

   DtPreloadGeometryQueue myGeometryQueue;

   int myDefaultPreloadPriority;

   std::auto_ptr<tbb::tbb_thread> myPreloadCommandThread;
   mutable tbb::mutex myShutdownMutex;
   bool myThreadShutdown;
};