Time.cpp

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//
// Time.cpp
//
 
 
#include "Time.hpp"
#include <sys/time.h>
#include <time.h>
#include "toolbox.hpp"  // fuer "::toString()"
 
//
// Duration
//
TimeDuration::TimeDuration()
{
        m_duration = 0.0;
}
 
 
const double Time::m_secondFractionNTPtoNanoseconds (0.2328306436538696); // = 2^-32 * 1e9
const double Time::m_nanosecondsToSecondFractionNTP (4.29496729600000);   // = 2^32 * 1e-9
const UINT64 Time::secondsFrom1900to1970 (2208988800UL);
 
//
// Time
//
Time::Time()
{
        set(0.0);
}
 
Time::~Time()
{
}
 
//
// Returns the time as a fractional value with up to 4 fraction digits.
// Example: "1393926457.2141"
//
std::string Time::toString() const
{
        double t = (double)m_time.tv_sec + ((double)m_time.tv_usec / 1000000.0);
        return ::toString(t, 4);
}
 
//
// Returns the time as a readble string, in local time. This includes
// the microseconds.
// Example: "Tue Mar  4 10:47:37 2014 165751 us"
//
std::string Time::toLongString() const
{
        time_t seconds = m_time.tv_sec;
        struct tm* seconds_tm = localtime(&seconds);
        char* text = asctime(seconds_tm);
        std::string s = text;
        
        // Microseconds
        std::string us = "000000" + ::toString((UINT32)m_time.tv_usec);
        us = us.substr(us.length() - 6, 6);
        s += " " + us + " us";
        
        return s;
}
 
//
// 
//
void Time::set(double time)
{
        m_time.tv_sec = (UINT32)time;
        m_time.tv_usec = (time - (double)((UINT32)time)) * 1000000;
}
 
//
//
//
void Time::set(timeval time)
{
        m_time = time;
}
 
 
void Time::set(UINT64 ntpTime)
{
        set(static_cast<UINT64>(ntpTime >> 32), static_cast<UINT32>(ntpTime));
}
 
//
//
//
void Time::set(UINT64 ntpSeconds, UINT32 ntpFractionalSeconds)
{
//      const UINT32 startUnixEpoche = 2208988800; // seconds from 1.1.1900 to 1.1.1900
        m_time.tv_sec = ntpSeconds - secondsFrom1900to1970;
        m_time.tv_usec = ntpFractionalSeconds * m_secondFractionNTPtoNanoseconds / 1000;
}
 
double Time::seconds()
{
        double s = (double)m_time.tv_sec + ((double)m_time.tv_usec / 1000000);
        return s;
}
 
//
// Zeit(spanne), in [ms].
//
UINT32 Time::total_milliseconds()
{
        UINT32 ms = (m_time.tv_sec * 1000) + (m_time.tv_usec / 1000);
        return ms;
}
 
 
 
Time& Time::operator+=(const Time& other)
{
        m_time.tv_usec += other.m_time.tv_usec;
        if (m_time.tv_usec > 1000000)
        {
                m_time.tv_sec++;
                m_time.tv_usec -= 1000000;
        }
        m_time.tv_sec += other.m_time.tv_sec;
        return *this;
}
 
Time Time::operator+(const Time& other) const
{
        Time t;
        t.m_time.tv_sec = m_time.tv_sec + other.m_time.tv_sec;
        t.m_time.tv_usec = (m_time.tv_usec + other.m_time.tv_usec);
        if (t.m_time.tv_usec > 1000000)
        {
                t.m_time.tv_sec++;
                t.m_time.tv_usec -= 1000000;
        }
        return t;
}
 
Time Time::operator+(const TimeDuration& dur) const
{
        Time td;
        td.set(dur.m_duration);
        
        Time t;
        t = *this + td;
        
        return t;
}
 
 
Time Time::now()
{
        Time t;
        gettimeofday(&(t.m_time), NULL);
        
        return t;
}
 
//
// True, wenn unser Zeitpunkt gleich oder spaeter als der andere ist.
//
bool Time::operator>=(const Time& other) const
{
        if (m_time.tv_sec > other.m_time.tv_sec)
        {
                return true;
        }
        else if ((m_time.tv_sec == other.m_time.tv_sec) &&
                         (m_time.tv_usec >= other.m_time.tv_usec))
        {
                return true;
        }
        
        return false;
}
 
//
// True, wenn unser Zeitpunkt frueher als der andere ist.
//
bool Time::operator<(const Time& other) const
{
        if (m_time.tv_sec < other.m_time.tv_sec)
        {
                // Unsere Sekunden sind kleiner
                return true;
        }
        else if ((m_time.tv_sec == other.m_time.tv_sec) &&
                         (m_time.tv_usec < other.m_time.tv_usec))
        {
                // Sekunden sind gleich, aber unsere usec sind kleiner
                return true;
        }
        
        return false;
}
 
//
// True, wenn unser Zeitpunkt gleich dem anderen ist.
//
bool Time::operator==(const Time& other) const
{
        if ((m_time.tv_sec == other.m_time.tv_sec) &&
                (m_time.tv_usec == other.m_time.tv_usec))
        {
                // Gleich
                return true;
        }
        
        return false;
}
 
 
Time Time::operator-(const Time& other) const
{
        Time t;
        if (m_time.tv_sec > other.m_time.tv_sec)
        {
                t.m_time.tv_sec = m_time.tv_sec - other.m_time.tv_sec;
                UINT32 offset = 0;
                if (m_time.tv_usec < other.m_time.tv_usec)
                {
                        t.m_time.tv_sec -= 1;
                        offset = 1000000;
                }
                t.m_time.tv_usec = (m_time.tv_usec + offset) - other.m_time.tv_usec;
        }
        else if (m_time.tv_sec == other.m_time.tv_sec)
        {
                t.m_time.tv_sec = 0;
                if (m_time.tv_usec < other.m_time.tv_usec)
                {
                        t.m_time.tv_usec = 0;
                }
                else
                {
                        t.m_time.tv_usec = m_time.tv_usec - other.m_time.tv_usec;
                }
        }
        else
        {
                t.m_time.tv_sec = 0;
                t.m_time.tv_usec = 0;
        }
        return t;
}
 
Time Time::operator-(const double& seconds) const
{
        Time t1, t2;
        t1.set(seconds);
        t2 = *this - t1;
        return t2;
/*      
        if (m_time.tv_sec > other.m_time.tv_sec)
        {
                t.m_time.tv_sec = m_time.tv_sec - other.m_time.tv_sec;
                UINT32 offset = 0;
                if (m_time.tv_usec < other.m_time.tv_usec)
                {
                        t.m_time.tv_sec -= 1;
                        offset = 1000000;
                }
                t.m_time.tv_usec = (m_time.tv_usec + offset) - other.m_time.tv_usec;
        }
        else if (m_time.tv_sec == other.m_time.tv_sec)
        {
                t.m_time.tv_sec = 0;
                if (m_time.tv_usec < other.m_time.tv_usec)
                {
                        t.m_time.tv_usec = 0;
                }
                else
                {
                        t.m_time.tv_usec = m_time.tv_usec - other.m_time.tv_usec;
                }
        }
        else
        {
                t.m_time.tv_sec = 0;
                t.m_time.tv_usec = 0;
        }
        return t;
*/
}