Time.hpp

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// Time.hpp
//
// created: June 6, 2011
//
// Mit "-lrt" linken!!
//

#ifndef TIME_HPP
#define TIME_HPP

#include "../BasicDatatypes.hpp"
#include <sys/time.h>
#include <time.h>

// Eine Zeitspanne, in [s]
class TimeDuration
{
public:
        TimeDuration();
        TimeDuration(double seconds) { m_duration = seconds; }
        
        void set(double seconds) { m_duration = seconds; }
        inline UINT32 total_milliseconds();
        inline TimeDuration& operator=(const double& seconds);
        
        double m_duration;      // Zeit, in [s]
};

// Fuer td = x;
inline TimeDuration& TimeDuration::operator=(const double& seconds)
{
        m_duration = seconds;
        return *this;
}

// Zeitspanne als [ms]
inline UINT32 TimeDuration::total_milliseconds()
{
        UINT32 ms = (UINT32)((m_duration * 1000.0) + 0.5);
        return ms;
}


class Time
{
public:
        Time();
        Time(timeval time);
        ~Time();
        
        void set(double time);
        void set(timeval time);
        void set(UINT64 ntpSeconds, UINT32 ntpFractionalSeconds);
        void set(UINT64 ntpTime);
        double seconds();
        UINT32 total_milliseconds();
        
        static Time now();      // Returns the current time
        
        Time operator+(const TimeDuration& dur) const;
        Time& operator+=(const Time& other);
        Time operator+(const Time& other) const;
        Time operator-(const Time& other) const;
        Time operator-(const double& seconds) const;
        bool operator>=(const Time& other) const;
        bool operator<(const Time& other) const;
        bool operator==(const Time& other) const;
        
        std::string toString() const;
        std::string toLongString() const;

        static const UINT64 secondsFrom1900to1970;
        
private:
        timeval m_time; // Zeit, in [s]

        static const double m_secondFractionNTPtoNanoseconds; // = 2^-32 * 1e9
        static const double m_nanosecondsToSecondFractionNTP;   // = 2^32 * 1e-9
};


#endif // TIME_HPP