DtProfileManager.h

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/*********************************************************************************
** Copyright (c) 2014 MAK Technologies, Inc.
** All rights reserved.
*********************************************************************************/


#pragma once

#include <vrvUtil/vrvUtil.h>

#include <string>

namespace makVrv
{
   typedef unsigned long long DtUInt64;  

   struct DtThreadProfileData;
   class DtProfileIterator;
   class DtProfileNode;

   class DT_DLL_VRVUTIL DtProfileManager 
   {
   public:
      static void startProfile(const char* name);
      static void stopProfile();

      static void startPerformanceStat(const char* name);
      static void stopPerformanceStat();

      static void getTime(DtUInt64& time);

      static void reset();
      static void incrementFrameCounter();
      static int  frameCountSinceReset() {return theFrameCounter; }
      static DtUInt64 timeSinceReset();
      static DtUInt64 ticksPerSecond();

      static double averageFps();
      static double instantFps();

      static double instantFrameTime();
      static double averageFrameTime();

      static DtProfileIterator*  profileIterator();

      static DtProfileIterator*  statIterator();

      static void releaseIterator(DtProfileIterator* iterator );

   private:
      class Initializer
      {
      public:
         Initializer();
      };
      friend class Initializer;
      static Initializer theInitializer;

      static DtThreadProfileData* getCurrentProfileNode();
      static DtThreadProfileData* getCurrentPerformanceStatNode();

      static DtProfileNode theRoot;
      static DtProfileNode thePerformanceStatRoot;

      static bool theShouldReset;
      static int theFrameCounter;
      static DtUInt64 theResetTime;
      static DtUInt64 thePreviousFrame;

      static DtUInt64* theFrameTimes;
      static int theFrameTimeIndex;
   };
}