timer.h

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//
// APFEL++ 2017
//
// Author: Valerio Bertone: valerio.bertone@cern.ch
//
 
#pragma once
 
#include "apfel/messages.h"
 
#include <chrono>
 
namespace apfel
{
  class Timer
  {
  public:
    Timer() { start(); }
 
    void start() { _startTime = std::chrono::steady_clock::now(); }
 
    void stop(bool const& ForceDisplay = false)
    {
      auto end = std::chrono::steady_clock::now();
      auto diff = end - _startTime;
      if (GetVerbosityLevel() > 1 || ForceDisplay)
        printf("Time elapsed: %5.6f seconds\n", std::chrono::duration <double, std::milli> (diff).count() * 1e-3);
    }
 
  private:
    std::chrono::time_point<std::chrono::steady_clock> _startTime;
  };
}