timing.hpp

//*LB*
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//*LE*





#ifndef __AIS_TIMING_HPP__
#define __AIS_TIMING_HPP__

#include <boost/date_time/posix_time/posix_time_types.hpp>

class Timing
{
    public:
        inline Timing();

        inline double  diff() const;
        inline double  perf() ;
        inline int     count() const;
        inline void    update(int inc=1);
        inline void    reset();

    private:
        boost::posix_time::ptime    m_start;  
        boost::posix_time::ptime    m_end;    
        int                         m_count;  

};

Timing::Timing()
    :   m_start(boost::posix_time::microsec_clock::universal_time())
      , m_end(boost::posix_time::microsec_clock::universal_time())
      , m_count(0)
{}

inline double Timing::diff() const
{
    return (m_end - m_start).total_microseconds() / (double)1e6;
}

inline void Timing::update(int inc)
{
    m_end = boost::posix_time::microsec_clock::universal_time();
    m_count += inc;
}

inline double Timing::perf()
{
    if(m_count==0)
        update(1);
    return diff() / m_count ;
}

void Timing::reset()
{
    m_start = boost::posix_time::microsec_clock::universal_time();
    m_end = boost::posix_time::microsec_clock::universal_time();
    m_count = 0;
}

inline int Timing::count() const
{
    return m_count;
} // end group tools

#endif /* __AIS_TIMING_HPP__ */