TimeMeasure.h

[詳解]

// -*- C++ -*-
#ifndef COIL_TIMEMEASURE_H
#define COIL_TIMEMEASURE_H

#include <vector>
#include <coil/TimeValue.h>

namespace coil
{
  
  class TimeMeasure
  {
  public:
    struct Statistics
    {
      double max_interval;
      double min_interval;
      double mean_interval;
      double std_deviation;
    };

    TimeMeasure(int buflen = 100);

    void tick();

    void tack();

    coil::TimeValue& interval();

    void reset();

    unsigned long int count() const;

    bool getStatistics(double &max_interval,
                       double &min_interval,
                       double &mean_interval,
                       double &stddev);

    Statistics getStatistics();

  private:
    std::vector<coil::TimeValue> m_record;
    coil::TimeValue m_begin;
    coil::TimeValue m_interval;

    unsigned long int m_count;
    const unsigned long int m_countMax;
    unsigned long long int m_cpuClock;

    bool m_recurred;
  };
}; // namespace coil
#endif // COIL_TIMEMEASURE_H