DtInMemoryProfiler.h

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/*********************************************************************************
** Copyright (c) 2017 MAK Technologies, Inc.
** All rights reserved.
*********************************************************************************/


#pragma once

#include <vrvUtil/vrvUtil.h>

#include <string>
#include <deque>

class DtTimedSection;

namespace makVrv
{
   class DtSampleAggregator;

   class DT_DLL_VRVUTIL DtInMemoryProfiler
   {
   public:
      static std::size_t calculateNumberOfSamples(float estimatedFrequency, float estimatedRunTimeSeconds);

      DtInMemoryProfiler();

      ~DtInMemoryProfiler();

      void init(std::size_t numOfSamples, const std::string& fileName);

      std::size_t numSamples() const;

      void start();

      void stop();

      void reset();

      bool dumped() const;

      // dump stats and force a dump of the underlying data; called if stopping and not dumped()
      void dump();

      bool valid() const;

   protected:

      void dumpStats();

      DtTimedSection* myTimer;
      DtSampleAggregator* myAggregator;
      bool myStarted;
   };

   class DT_DLL_VRVUTIL DtInMemoryProfilerHelper
   {
   public:
      DtInMemoryProfilerHelper(std::size_t numOfSamples, const std::string& fileName);

      void addProfile(double fStart, double fEndAt);
      void clearProfiles(void);

      void profilerPre(double elapsedTime);
      void profilerPost();
   private:
      DtInMemoryProfiler myProfiler;

      struct ProfileData
      {
         ProfileData()
            : myStartAt(0), myEndAt(0), myLoggedStart(false), myDumped(false), myID(0) {}
         double myStartAt;
         double myEndAt;
         bool   myLoggedStart;
         bool   myDumped;
         std::size_t   myID;
      };

      typedef std::deque<ProfileData> Profiles;
      Profiles myProfiles;

      bool myIsProfiling;
   };
}