Timer.h

#ifndef FRAMEWORK_PERFORMANCE_TIMER
#define FRAMEWORK_PERFORMANCE_TIMER
 
#include <Rtypes.h>  // For ClassDef
 
#include <chrono>
#include <string>
 
#include "TDirectory.h"
 
namespace framework::performance {
 
class Timer {
  using clock = std::chrono::high_resolution_clock;
  std::chrono::time_point<clock> begin_;  
 
  std::chrono::time_point<clock> end_;  
 
  long int start_time_{-1};
 
  double duration_{-1};
 
 public:
  Timer() = default;
  virtual ~Timer() = default;
  void reset();
  void start();
  void stop();
  double duration() const;
  void write(TDirectory* location, const std::string& name) const;
  ClassDef(Timer, 2);
};
 
}  // namespace framework::performance
 
#endif