DtStatsSet.h

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/****************************************************************************** 
** Copyright (c) 2012 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 


#pragma once

#include <string>
#include <vector>

#include <vrvCore/vrvCore.h>
#include <vlutil/vlPerformanceStats.h>
#include <boost/preprocessor/seq/for_each.hpp>
#include <boost/preprocessor/facilities/expand.hpp>

namespace makVrv
{
#define DT_DECLARE_STATS_SET(name, id, stats_elements)\
   DT_STATSSET_DECLARE_ENUM(id, stats_elements)\
   \
   void init##id##Stats(makVrv::DtPerformanceStatsManager& mgr)\
   {\
      static bool guard = false;\
      guard = true;\
      makVrv::DtStatsSet* id##_statsSet = new makVrv::DtStatsSet();\
      id##_statsSet->myName = name;\
      BOOST_PP_SEQ_FOR_EACH(DT_STATSSET_ADD, id##_statsSet, stats_elements)\
      mgr.add(name, id##_statsSet);\
   }\

#define DT_STATSSET_QUOTE(x) #x
#define DT_STATSSET_ENUM(r, name, elem) BOOST_PP_CAT(timer, BOOST_PP_CAT(_, BOOST_PP_CAT(name, BOOST_PP_CAT(_, elem)))),
#define DT_STATSSET_ADD(r, stats_set_ptr, elem) stats_set_ptr->addStats(DT_STATSSET_QUOTE(elem)); 
#define DT_STATSSET_DECLARE_ENUM(name, seq) enum TimerStats_##name { BOOST_PP_SEQ_FOR_EACH(DT_STATSSET_ENUM, name, seq) timer_##name##_end};

   struct DT_DLL_VRVCORE DtTimeStat
   {
      std::string myDescription;
      DtTimeStatistic myStatistic;
   };

   class DT_DLL_VRVCORE DtStatsSet
   {
   public:
      void addStats(const std::string& name);
      
      void startFrame();
      
      void endFrame(double frameDuration);

      void addTime(unsigned int index, double t);
         
      std::vector<DtTimeStat> myStats;
      double myTotalTime;
      std::vector<double> myPerFrameStats;
      DtPerformanceStats myStatsTimer;
      std::string myName;
   };

   class DT_DLL_VRVCORE ScopedStatTimer
   {
   public:
      ScopedStatTimer(unsigned int timerIndex, makVrv::DtStatsSet& statsSet);

      virtual ~ScopedStatTimer();
   
   protected:
      DtTimedSection myTimedSection;
      makVrv::DtStatsSet& myStatsSet;
      unsigned int myIndex;
   };

#define DT_SCOPED_STAT_TIMER(stats_element, stats_set_id, stats_set_ref)\
   ScopedStatTimer scopedStatTimer_##stats_element(timer_##stats_set_id##_##stats_element, stats_set_ref)
}