TestTimer.h

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#ifndef TESTTIMER_H
#define TESTTIMER_H

// simple class to measure time 

#include "TStopwatch.h"


namespace ROOT { 

  namespace Math{ 

    namespace test { 

#ifdef REPORT_TIME
      void reportTime( std::string s, double time); 
#endif

      void printTime(TStopwatch & time, std::string s) { 
        int pr = std::cout.precision(8);
        std::cout << s << "\t" << " time = " << time.RealTime() << "\t(sec)\t" 
          //    << time.CpuTime() 
                  << std::endl;
        std::cout.precision(pr);
      }



      class Timer {

      public: 

        Timer(const std::string & s = "") : fName(s), fTime(0) 
        {
          fWatch.Start();
        }
        Timer(double & t, const std::string & s = "") : fName(s), fTime(&t) 
        {
          fWatch.Start();
        } 
        
        ~Timer() { 
          fWatch.Stop();
          printTime(fWatch,fName);
#ifdef REPORT_TIME
          // report time
          reportTime(fName, fWatch.RealTime() );
#endif
          if (fTime) *fTime += fWatch.RealTime();
        }


      private: 
        
        std::string fName;
        double * fTime; 
        TStopwatch fWatch; 
        
      }; 
    }

  }
}

#endif

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