In This Package:

TimerForSequencer Class Reference

Auxilliary class. More...

#include <TimerForSequencer.h>

Collaboration diagram for TimerForSequencer:

[legend]List of all members.

Public Member Functions
	TimerForSequencer (std::string name, double factor)
	Constructor.
	~TimerForSequencer ()
void	start ()
	Start a time measurement.
double	stop ()
	Stop time measurement and return the last elapsed time.
std::string	name () const
	returns the name
double	lastTime () const
	returns the last measured time
double	lastCpu () const
	returns the last measured time
MsgStream &	fillStream (MsgStream &s) const
	Write measured time into the message stream.
std::string	header () const
	header matching the previous format
Private Attributes
std::string	m_name
double	m_factor
longlong	m_startClock
longlong	m_startCpu
long	m_num
double	m_lastTime
double	m_lastCpu
double	m_min
double	m_max
double	m_sum
double	m_sumCpu

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Detailed Description

Auxilliary class.

Measure the time between start and stop, and compute average, min and max. In fact, measure the cpu time, and the elapsed time but givesmin/max only for elapsed.

Author:

O.Callot

Definition at line 14 of file TimerForSequencer.h.

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Constructor & Destructor Documentation

TimerForSequencer::TimerForSequencer	(	std::string	name,
		double	factor
	)			[inline]

Constructor.

Specify the name, for later printing.

Definition at line 19 of file TimerForSequencer.h.

                                                     {
    m_name   = name;
    m_num    = 0;
    m_min    = 0;
    m_max    = 0;
    m_sum    = 0;
    m_sumCpu = 0;
    m_factor = factor;
    m_lastTime = 0.;
    m_lastCpu  = 0.;
  }

TimerForSequencer::~TimerForSequencer

(

)

[inline]

Definition at line 31 of file TimerForSequencer.h.

{};

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Member Function Documentation

void TimerForSequencer::start

(

)

[inline]

Start a time measurement.

Definition at line 34 of file TimerForSequencer.h.

                {
    m_startClock = System::currentTime( System::microSec );
    m_startCpu   = System::cpuTime( System::microSec );
  }

double TimerForSequencer::stop

(

)

[inline]

Stop time measurement and return the last elapsed time.

Returns:

Measured time in ms

Definition at line 42 of file TimerForSequencer.h.

                {
    double cpuTime  =  double(System::cpuTime( System::microSec ) - m_startCpu );
    double lastTime =  double(System::currentTime( System::microSec ) - m_startClock );

    //== Change to normalized millisecond
    cpuTime  *= m_factor;
    lastTime *= m_factor;
    
    //== Update the counter
    m_num    += 1;
    m_sum    += lastTime;
    m_sumCpu += cpuTime;
    
    if ( 1 == m_num ) {
      m_min = lastTime;
      m_max = lastTime;
    } else {
      if ( lastTime < m_min ) m_min = lastTime;
      if ( lastTime > m_max ) m_max = lastTime;
    }
    m_lastTime = lastTime;
    m_lastCpu  = cpuTime;
    return lastTime;
  }

std::string TimerForSequencer::name

(

)

const [inline]

returns the name

Definition at line 68 of file TimerForSequencer.h.

{ return m_name; }

double TimerForSequencer::lastTime

(

)

const [inline]

returns the last measured time

Definition at line 71 of file TimerForSequencer.h.

{ return m_lastTime; }

double TimerForSequencer::lastCpu

(

)

const [inline]

returns the last measured time

Definition at line 74 of file TimerForSequencer.h.

{ return m_lastCpu; }

MsgStream& TimerForSequencer::fillStream

(

MsgStream &

s

)

const [inline]

Write measured time into the message stream.

Definition at line 77 of file TimerForSequencer.h.

                                              {
    double ave = 0.;
    double cpu = 0.;
    
    if ( 0 != m_num ) {
      ave = m_sum    / m_num;
      cpu = m_sumCpu / m_num;
    }
    
    return s << m_name 
             << format( "| %9.3f | %9.3f | %8.3f %9.1f | %7d | %9.3f |",
                        cpu, ave, m_min, m_max, m_num, m_sum * 0.001 );
  }

std::string TimerForSequencer::header

(

)

const [inline]

header matching the previous format

Definition at line 92 of file TimerForSequencer.h.

                            {
    std::string s = "Algorithm          (millisec) |    <user> |   <clock> |";
    s += "      min       max | entries | total (s) |";
    return s;
  }

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Member Data Documentation

std::string TimerForSequencer::m_name [private]

Definition at line 99 of file TimerForSequencer.h.

double TimerForSequencer::m_factor [private]

Definition at line 100 of file TimerForSequencer.h.

longlong TimerForSequencer::m_startClock [private]

Definition at line 101 of file TimerForSequencer.h.

longlong TimerForSequencer::m_startCpu [private]

Definition at line 102 of file TimerForSequencer.h.

long TimerForSequencer::m_num [private]

Definition at line 104 of file TimerForSequencer.h.

double TimerForSequencer::m_lastTime [private]

Definition at line 105 of file TimerForSequencer.h.

double TimerForSequencer::m_lastCpu [private]

Definition at line 106 of file TimerForSequencer.h.

double TimerForSequencer::m_min [private]

Definition at line 107 of file TimerForSequencer.h.

double TimerForSequencer::m_max [private]

Definition at line 108 of file TimerForSequencer.h.

double TimerForSequencer::m_sum [private]

Definition at line 109 of file TimerForSequencer.h.

double TimerForSequencer::m_sumCpu [private]

Definition at line 110 of file TimerForSequencer.h.

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

• /home/dayabay/installs/trunk_2011_04_11_opt/NuWa-trunk/gaudi/GaudiAlg/src/components/TimerForSequencer.h

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