clock.hpp

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#ifndef CLOCK_HPP_
#define CLOCK_HPP_
 
#include <chrono>
 
namespace bst {
namespace clck {
 
namespace units {
typedef std::chrono::duration<double, std::ratio<1, 1>> Seconds;
typedef std::chrono::duration<double, std::ratio<1, 1000>> Milliseconds;
typedef std::chrono::duration<double, std::ratio<1, 1000000>> Microseconds;
} // namespace units
 
typedef std::chrono::high_resolution_clock Clock;
typedef std::chrono::time_point<Clock> TimePoint;
typedef Clock::duration Duration;
 
inline TimePoint now() {
  return clck::Clock::now();
}
 
inline int secondsElapsed(const TimePoint &time_point) {
  return std::chrono::duration_cast<units::Seconds>(clck::now() - time_point)
      .count();
}
 
inline int millisecondsElapsed(const TimePoint &time_point) {
  return std::chrono::duration_cast<units::Milliseconds>(now() - time_point)
      .count();
}
 
inline time_t toTimeT(const TimePoint &time_point) {
  return Clock::to_time_t(time_point);
}
 
inline TimePoint fromTimeT(time_t time) {
  return Clock::from_time_t(time);
}
 
} // namespace clck
} // namespace bst
 
#endif