BesTimer Class Reference

#include <BesTimer.h>

List of all members.

Public Member Functions
	BesTimer (const std::string name)
std::string &	name ()
float	elapsed (void) const
double	mean (void) const
double	rms (void) const
int	number_of_measurements (void) const
void	propName (std::string name)
std::string &	propName ()
unsigned int	propVal ()
void	propVal (unsigned int val)
double	meanPropVal ()
double	meanTimePerObject ()
bool	operator< (BesTimer &it)
void	start (void)
void	stop (void)
void	pause (void)
void	resume (void)
void	reset ()
Private Attributes
std::string	m_name
timeval	m_startTime
float	m_elapsed
double	m_mean
double	m_ms
int	m_numberOfMeasurements
bool	m_started
bool	m_paused
std::string	m_propName
unsigned int	m_propVal
double	m_meanVal
double	m_meanTimePerObject
int	m_NmeanTimePerObject

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Detailed Description

Definition at line 13 of file BesTimer.h.

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Constructor & Destructor Documentation

BesTimer::BesTimer

(

const std::string

name

)

Definition at line 13 of file BesTimer.cxx.

References m_elapsed, m_mean, m_meanTimePerObject, m_meanVal, m_ms, m_NmeanTimePerObject, m_numberOfMeasurements, m_paused, m_propVal, and m_started.

      : m_name (name) {
      m_numberOfMeasurements = 0;
      m_mean = 0.0;
      m_ms = 0.0;
      m_elapsed = 0.0;
      m_started=false;
      m_paused=false;
      m_propVal = 0;
      m_meanVal = 0;
      m_meanTimePerObject = 0.0;
      m_NmeanTimePerObject = 0;
    }

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Member Function Documentation

float BesTimer::elapsed

(

void

)

const [inline]

Definition at line 23 of file BesTimer.h.

References m_elapsed, and m_started.

Referenced by MixerAlg::execute(), MdcFastTrkAlg::execute(), MagFieldReader::execute(), TrkReco::FillTuple(), and MixerAlg::nextEvent().

{ return (m_started? 0.0 : m_elapsed);}

double BesTimer::mean

(

void

)

const [inline]

Definition at line 25 of file BesTimer.h.

References m_mean.

{ return m_mean;}

double BesTimer::meanPropVal

(

)

[inline]

Definition at line 40 of file BesTimer.h.

References m_meanVal.

{ return m_meanVal;}

double BesTimer::meanTimePerObject

(

)

[inline]

Definition at line 41 of file BesTimer.h.

References m_meanTimePerObject.

{ return m_meanTimePerObject;}

std::string& BesTimer::name

(

void

)

[inline]

Definition at line 21 of file BesTimer.h.

References m_name.

Referenced by operator<().

{ return m_name; }

int BesTimer::number_of_measurements

(

void

)

const [inline]

Definition at line 31 of file BesTimer.h.

References m_numberOfMeasurements.

{ return m_numberOfMeasurements;}

bool BesTimer::operator<

(

BesTimer &

it

)

[inline]

Definition at line 44 of file BesTimer.h.

References name().

{ return (this->name() < it.name());}

void BesTimer::pause

(

void

)

Definition at line 80 of file BesTimer.cxx.

References m_elapsed, m_paused, m_started, m_startTime, and SecsInDay.

                                {
      struct timeval tv;

      // only pause if started
      // a pause while paused is ignored 
      if (m_paused || !m_started) return;
      m_paused = true;
      gettimeofday(&tv, 0);

      float mtime;
      int secs, usecs;
      
      if (tv.tv_sec >= m_startTime.tv_sec) {
        secs = tv.tv_sec - m_startTime.tv_sec;
      } else {
        secs = tv.tv_sec - m_startTime.tv_sec + SecsInDay;
      }
      usecs = tv.tv_usec - m_startTime.tv_usec;
      mtime = static_cast<float>(secs)*1000. + static_cast<float>(usecs)/1000.;
      m_elapsed += mtime; // time so far
    }

std::string& BesTimer::propName

(

)

[inline]

Definition at line 35 of file BesTimer.h.

References m_propName.

{ return m_propName; }

void BesTimer::propName

(

std::string

name

)

[inline]

Definition at line 34 of file BesTimer.h.

References m_propName.

Referenced by TrkReco::initialize(), and MdcFastTrkAlg::initialize().

{ m_propName = name; }

void BesTimer::propVal

(

unsigned int

val

)

[inline]

Definition at line 38 of file BesTimer.h.

References m_propVal.

{ m_propVal = val; } 

unsigned int BesTimer::propVal

(

)

[inline]

Definition at line 37 of file BesTimer.h.

References m_propVal.

{ return m_propVal;}

void BesTimer::reset

(

)

Definition at line 114 of file BesTimer.cxx.

References m_elapsed, m_propVal, and m_started.

                          { 
      if (!m_started) {
        m_elapsed = 0.0; 
        m_propVal = 0;
      }
    }

void BesTimer::resume

(

void

)

Definition at line 102 of file BesTimer.cxx.

References m_paused, m_started, m_startTime, and start().

                                {
      struct timeval tv;

      if (!m_started) { 
        start(); // resume acts as start if not started
      } else if (m_paused) {
        m_paused = false;
        gettimeofday(&tv, 0);
        m_startTime = tv;
      }
    }

double BesTimer::rms

(

void

)

const [inline]

Definition at line 26 of file BesTimer.h.

References m_mean, and m_ms.

                             { 
      double var = m_ms - m_mean*m_mean;
      return (var > 0 ? sqrt(var) : 0.0);
    }

void BesTimer::start

(

void

)

Definition at line 27 of file BesTimer.cxx.

References m_elapsed, m_paused, m_propVal, m_started, and m_startTime.

Referenced by MixerAlg::execute(), TrkReco::execute(), MdcFastTrkAlg::execute(), MagFieldReader::execute(), MixerAlg::nextEvent(), and resume().

                               {
      struct timeval tv;

      m_started = true;
      m_paused = false;
      m_elapsed = 0.0;
      m_propVal = 0;
      // if already started, the start time will be over-written
      gettimeofday(&tv, 0);
      m_startTime = tv;
    }

void BesTimer::stop

(

void

)

Definition at line 39 of file BesTimer.cxx.

References m_elapsed, m_mean, m_meanTimePerObject, m_meanVal, m_ms, m_NmeanTimePerObject, m_numberOfMeasurements, m_paused, m_propVal, m_started, m_startTime, and SecsInDay.

Referenced by MixerAlg::execute(), MdcFastTrkAlg::execute(), MagFieldReader::execute(), TrkReco::FillTuple(), and MixerAlg::nextEvent().

                               {
      struct timeval tv;
      
      if (!m_started) return;

      gettimeofday(&tv, 0);
      m_started = false;
      
      if (!m_paused) {
        float mtime;
        int secs, usecs;
        
        if (tv.tv_sec >= m_startTime.tv_sec) {
          secs = tv.tv_sec - m_startTime.tv_sec;
        } else {
          secs = tv.tv_sec - m_startTime.tv_sec + SecsInDay;
        }
        usecs = tv.tv_usec - m_startTime.tv_usec;
        mtime = static_cast<float>(secs)*1000. + static_cast<float>(usecs)/1000.;

        // elapsed time
        m_elapsed += mtime;
        
      }

      // statistics - mean, rms
      double denom = static_cast <double> (++m_numberOfMeasurements);
      double d = m_elapsed - m_mean;
      m_mean += d / denom;
      double dd = m_elapsed*m_elapsed - m_ms;
      m_ms += dd / denom;

      // mean property 
      m_meanVal += static_cast <double> (m_propVal - m_meanVal) / denom;
      if (m_propVal !=0) {
        double timePerObject = m_elapsed/static_cast <double>(m_propVal);
        m_meanTimePerObject += static_cast <double> (timePerObject - m_meanTimePerObject) / 
          static_cast<double> (++m_NmeanTimePerObject);
      }
    }

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Member Data Documentation

float BesTimer::m_elapsed [private]

Definition at line 57 of file BesTimer.h.

Referenced by BesTimer(), elapsed(), pause(), reset(), start(), and stop().

double BesTimer::m_mean [private]

Definition at line 58 of file BesTimer.h.

Referenced by BesTimer(), mean(), rms(), and stop().

double BesTimer::m_meanTimePerObject [private]

Definition at line 66 of file BesTimer.h.

Referenced by BesTimer(), meanTimePerObject(), and stop().

double BesTimer::m_meanVal [private]

Definition at line 65 of file BesTimer.h.

Referenced by BesTimer(), meanPropVal(), and stop().

double BesTimer::m_ms [private]

Definition at line 59 of file BesTimer.h.

Referenced by BesTimer(), rms(), and stop().

std::string BesTimer::m_name [private]

Definition at line 55 of file BesTimer.h.

Referenced by name().

int BesTimer::m_NmeanTimePerObject [private]

Definition at line 67 of file BesTimer.h.

Referenced by BesTimer(), and stop().

int BesTimer::m_numberOfMeasurements [private]

Definition at line 60 of file BesTimer.h.

Referenced by BesTimer(), number_of_measurements(), and stop().

bool BesTimer::m_paused [private]

Definition at line 62 of file BesTimer.h.

Referenced by BesTimer(), pause(), resume(), start(), and stop().

std::string BesTimer::m_propName [private]

Definition at line 63 of file BesTimer.h.

Referenced by propName().

unsigned int BesTimer::m_propVal [private]

Definition at line 64 of file BesTimer.h.

Referenced by BesTimer(), propVal(), reset(), start(), and stop().

bool BesTimer::m_started [private]

Definition at line 61 of file BesTimer.h.

Referenced by BesTimer(), elapsed(), pause(), reset(), resume(), start(), and stop().

struct timeval BesTimer::m_startTime [private]

Definition at line 56 of file BesTimer.h.

Referenced by pause(), resume(), start(), and stop().

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