lsst::ap::Stopwatch Class Reference

Utility class for profiling. More...

#include <Time.h>

Public Member Functions
	Stopwatch (bool const go=true)
void	start ()
void	stop ()
std::string const	toString () const
double	seconds () const

Private Attributes
TimeSpec	_ts
bool	_stopped

Friends
std::ostream &	operator<< (std::ostream &, Stopwatch const &)

Detailed Description

Utility class for profiling.

Definition at line 98 of file Time.h.

Constructor & Destructor Documentation

lsst::ap::Stopwatch::Stopwatch ( bool const  go = true )

explicit

Definition at line 124 of file Time.cc.

                                  : _ts(), _stopped(true) {
    if (go) {
        start();
    }
}

Member Function Documentation

double lsst::ap::Stopwatch::seconds

(

)

const

Definition at line 156 of file Time.cc.

                                {
    TimeSpec t;
    if (_stopped) {
        t = _ts;
    } else {
        t.now();
        t -= _ts;
    }
    return t.seconds();
}

void lsst::ap::Stopwatch::start

(

)

Definition at line 131 of file Time.cc.

                      {
    if (_stopped) {
        _ts.now();
        _stopped = false;
    }
}

void lsst::ap::Stopwatch::stop

(

)

Definition at line 139 of file Time.cc.

                     {
    if (!_stopped) {
        TimeSpec t;
        t.now() -= _ts;
        _ts      = t;
        _stopped = true;
    }
}

std::string const lsst::ap::Stopwatch::toString

(

void

)

const

Definition at line 149 of file Time.cc.

                                          {
    std::ostringstream os;
    os << *this;
    return os.str();
}

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  os, Stopwatch const &  watch  )

friend

Definition at line 168 of file Time.cc.

                                                                  {
    TimeSpec t;
    if (watch._stopped) {
        t = watch._ts;
    } else {
        t.now();
        t -= watch._ts;
    }
    long nsec = t.tv_nsec % 1000000000l;
    long sec  = t.tv_sec + t.tv_nsec/1000000000l;
    long min  = (sec/60) % 60;
    long hour = sec/3600;

    double s = static_cast<double>(sec % 60) + 1e-9 * static_cast<double>(nsec);

    if (hour > 0) {
        os << hour << "hr ";
    }
    if (min > 0) {
        os << min << "min ";
    }
    os << s << "sec";
    return os;
}

Member Data Documentation

bool lsst::ap::Stopwatch::_stopped

private

Definition at line 115 of file Time.h.

TimeSpec lsst::ap::Stopwatch::_ts

private

Definition at line 114 of file Time.h.

---

The documentation for this class was generated from the following files:

• /lsst/home/lsstsw/stack/Linux64/ap/master-g60f1e072bb+1/include/lsst/ap/Time.h
• /lsst/home/lsstsw/stack/Linux64/ap/master-g60f1e072bb+1/src/Time.cc