Timer.h

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#ifndef _MADARA_UTILITY_TIMER_H_
#define _MADARA_UTILITY_TIMER_H_
 
#include <chrono>
#include "IntTypes.h"
 
namespace madara
{
namespace utility
{
template<typename CLOCK = std::chrono::steady_clock>
class Timer
{
public:
  inline void start(void)
  {
    start_ = CLOCK::now();
  }
 
  inline void stop(void)
  {
    end_ = CLOCK::now();
  }
 
  inline uint64_t duration_ns(void) const
  {
    auto dur =
        std::chrono::duration_cast<std::chrono::nanoseconds>(end_ - start_);
 
    return (uint64_t)dur.count();
  }
 
  inline uint64_t duration_s(void) const
  {
    auto dur = std::chrono::duration_cast<std::chrono::seconds>(end_ - start_);
 
    return (uint64_t)dur.count();
  }
 
  inline double duration_ds(void) const
  {
    auto dur = std::chrono::duration_cast<std::chrono::duration<double>>(
        end_ - start_);
 
    return (double)dur.count();
  }
 
  template<typename PERIOD = std::chrono::nanoseconds>
  inline uint64_t duration(void) const
  {
    auto dur = std::chrono::duration_cast<PERIOD>(end_ - start_);
 
    return (uint64_t)dur.count();
  }
 
private:
  std::chrono::time_point<CLOCK> start_;
 
  std::chrono::time_point<CLOCK> end_;
};
 
typedef Timer<std::chrono::steady_clock> TimerSteady;
}
}
 
#endif  // _MADARA_UTILITY_TIMER_H_