ChronoEntity Class Reference

#include <GaudiKernel/ChronoEntity.h>

Collaboration diagram for ChronoEntity:

Public Member Functions
	ChronoEntity ()=default
	default constructor More...
IChronoSvc::ChronoStatus	start ()
	start the current chrono More...
IChronoSvc::ChronoStatus	stop ()
	stop the chrono More...
IChronoSvc::ChronoTime	delta (IChronoSvc::ChronoType type) const
	return the last delta-time of type "type" More...
IChronoSvc::ChronoStatus	status () const
	return the status of chrono More...
unsigned long	nOfMeasurements () const
	number of chrono measurements More...
double	uMinimalTime () const
	minimal measurement for user time More...
double	kMinimalTime () const
	minimal measurement for kernel time More...
double	eMinimalTime () const
	minimal measurement for elapsed time More...
double	uMaximalTime () const
	maximal measurement for user time More...
double	kMaximalTime () const
	maximal measurement for kernel time More...
double	eMaximalTime () const
	maximal measurement for elapsed time More...
double	uTotalTime () const
	total user time More...
double	kTotalTime () const
	total Kernel time More...
double	eTotalTime () const
	total Elapsed time More...
double	totalTime () const
	total time More...
double	kMeanTime () const
	average Kernel Time More...
double	uMeanTime () const
	average User Time More...
double	eMeanTime () const
	average Elapsed Time More...
double	kRMSTime () const
	r.m.s Kernel Time More...
double	uRMSTime () const
	r.m.s User Time More...
double	eRMSTime () const
	r.m.s Elapsed Time More...
double	kMeanErrorTime () const
	error in mean Kernel time More...
double	uMeanErrorTime () const
	error in mean User time More...
double	eMeanErrorTime () const
	error in mean Elapsed time More...
ChronoEntity &	operator+= (const ChronoEntity &entity)
	Compound assignment operator. More...
std::string	outputUserTime () const
	print the chrono ; More...
std::string	outputSystemTime () const
	print the chrono ; More...
std::string	outputElapsedTime () const
	print the chrono ; More...
std::string	outputUserTime (std::string_view fmt, System::TimeType unit) const
	print the chrono according the format and units More...
std::string	outputSystemTime (std::string_view fmt, System::TimeType unit) const
	print the chrono according the format and units More...
std::string	outputElapsedTime (std::string_view fmt, System::TimeType unit) const
	print the chrono according the format and units More...
std::string	outputTime (IChronoSvc::ChronoType typ, std::string_view fmt, System::TimeType unit) const
	print the chrono according the format and units More...

Protected Member Functions
std::string	format (const double total, const double minimal, const double mean, const double rms, const double maximal, const unsigned long number) const
	format More...

Private Attributes
IChronoSvc::ChronoStatus	m_status = IChronoSvc::UNKNOWN
	current status of this chrono object; More...
System::ProcessTime	m_delta
	delta process times More...
System::ProcessTime	m_start
	start stamp for current measurement of process times More...
StatEntity	m_user
	the actual storage of "user" time More...
StatEntity	m_kernel
	the actual storage of "kernel" time More...
StatEntity	m_elapsed
	the actual storage of "elapsed" time More...

Static Private Attributes
static const System::TimeType	TimeUnit = System::microSec
	internal unit used for the system time conversion (microseconds) More...

Friends
bool	operator< (ChronoEntity const &lhs, ChronoEntity const &rhs)
	comparison operator More...

Detailed Description

a small helper class for implementation of ChronoStatSvc service, It also could be used as some local timer

Author

Vanya BELYAEV Ivan..nosp@m.Bely.nosp@m.aev@i.nosp@m.tep..nosp@m.ru

Date

December 1, 1999

Definition at line 31 of file ChronoEntity.h.

Constructor & Destructor Documentation

ChronoEntity()

ChronoEntity::ChronoEntity ( )

default

default constructor

Member Function Documentation

delta()

IChronoSvc::ChronoTime ChronoEntity::delta ( IChronoSvc::ChronoType  type ) const

inline

return the last delta-time of type "type"

Definition at line 271 of file ChronoEntity.h.

                                                                                 {
  const IChronoSvc::ChronoTime result = -1;
  switch ( type ) {
  case IChronoSvc::USER:
    return m_delta.userTime<TimeUnit>();
  case IChronoSvc::KERNEL:
    return m_delta.kernelTime<TimeUnit>();
  case IChronoSvc::ELAPSED:
    return m_delta.elapsedTime<TimeUnit>();
  default:
    return result;
  }
  // cannot reach this point
}

eMaximalTime()

double ChronoEntity::eMaximalTime ( ) const

inline

maximal measurement for elapsed time

Definition at line 215 of file ChronoEntity.h.

{ return m_elapsed.flagMax(); }

eMeanErrorTime()

double ChronoEntity::eMeanErrorTime ( ) const

inline

error in mean Elapsed time

Definition at line 267 of file ChronoEntity.h.

{ return m_elapsed.flagMeanErr(); }

eMeanTime()

double ChronoEntity::eMeanTime ( ) const

inline

average Elapsed Time

Definition at line 243 of file ChronoEntity.h.

{ return m_elapsed.flagMean(); }

eMinimalTime()

double ChronoEntity::eMinimalTime ( ) const

inline

minimal measurement for elapsed time

Definition at line 203 of file ChronoEntity.h.

{ return m_elapsed.flagMin(); }

eRMSTime()

double ChronoEntity::eRMSTime ( ) const

inline

r.m.s Elapsed Time

Definition at line 255 of file ChronoEntity.h.

{ return m_elapsed.flagRMS(); }

eTotalTime()

double ChronoEntity::eTotalTime ( ) const

inline

total Elapsed time

Definition at line 227 of file ChronoEntity.h.

{ return m_elapsed.flag(); }

format()

std::string ChronoEntity::format ( const double  total, const double  minimal, const double  mean, const double  rms, const double  maximal, const unsigned long  number  ) const

protected

format

Todo:

: cache the format

Definition at line 102 of file ChronoEntity.cpp.

                                                                                           {
 
  constexpr auto fmt      = "Tot={1:5.3g}{0:5} {3} #={2:3}";
  constexpr auto stat_fmt = "Ave/Min/Max={1:8.3g}(+-{2:8.3g})/{3:8.3g}/{4:8.3g}{0:5}";
 
  static const std::array<std::tuple<int, double, std::string_view>, 9> tbl{ { { 500, microsecond, " [us]" },
                                                                               { 500, millisecond, " [ms]" },
                                                                               { 500, second, "  [s]" },
                                                                               { 500, minute, "[min]" },
                                                                               { 500, hour, "  [h]" },
                                                                               { 10, day, "[day]" },
                                                                               { 5, week, "  [w]" },
                                                                               { 20, month, "[mon]" },
                                                                               { -1, year, "  [y]" } } };
 
  auto             i         = find_if( begin( tbl ), prev( end( tbl ) ),
                                        [&]( const auto& i ) { return total < std::get<0>( i ) * std::get<1>( i ); } );
  long double      unit      = std::get<1>( *i );
  std::string_view unit_name = std::get<2>( *i );
 
  auto stats = [&]() -> std::string {
    if ( number > 1 ) {
      auto             i         = find_if( begin( tbl ), prev( end( tbl ) ),
                                            [&]( const auto& i ) { return total < std::get<0>( i ) * std::get<1>( i ); } );
      auto             unit      = std::get<1>( *i );
      std::string_view unit_name = std::get<2>( *i );
      return fmt::format( stat_fmt, unit_name, (double)( mean / unit ), (double)( rms / unit ),
                          (double)( minimal / unit ), (double)( maximal / unit ) );
    } else {
      return {};
    }
  };
 
  return fmt::format( fmt, unit_name, (double)( total / unit ), number, stats() );
}

kMaximalTime()

double ChronoEntity::kMaximalTime ( ) const

inline

maximal measurement for kernel time

Definition at line 211 of file ChronoEntity.h.

{ return m_kernel.flagMax(); }

kMeanErrorTime()

double ChronoEntity::kMeanErrorTime ( ) const

inline

error in mean Kernel time

Definition at line 259 of file ChronoEntity.h.

{ return m_kernel.flagMeanErr(); }

kMeanTime()

double ChronoEntity::kMeanTime ( ) const

inline

average Kernel Time

Definition at line 235 of file ChronoEntity.h.

{ return m_kernel.flagMean(); }

kMinimalTime()

double ChronoEntity::kMinimalTime ( ) const

inline

minimal measurement for kernel time

Definition at line 199 of file ChronoEntity.h.

{ return m_kernel.flagMin(); }

kRMSTime()

double ChronoEntity::kRMSTime ( ) const

inline

r.m.s Kernel Time

Definition at line 247 of file ChronoEntity.h.

{ return m_kernel.flagRMS(); }

kTotalTime()

double ChronoEntity::kTotalTime ( ) const

inline

total Kernel time

Definition at line 223 of file ChronoEntity.h.

{ return m_kernel.flag(); }

nOfMeasurements()

unsigned long ChronoEntity::nOfMeasurements ( ) const

inline

number of chrono measurements

Definition at line 191 of file ChronoEntity.h.

{ return m_user.nEntries(); }

operator+=()

ChronoEntity & ChronoEntity::operator+=

(

const ChronoEntity &

entity

)

Compound assignment operator.

Definition at line 142 of file ChronoEntity.cpp.

                                                              {
  // System::ProcessTime type
  m_delta += e.m_delta;
 
  // Summing, massaging here does not make too much sense.
  // This is done only for final reductions
  // Keep by convention the original one.
  //    m_start += e.m_start;
 
  // Tymevaluetypes type
  m_user += e.m_user;
  m_kernel += e.m_kernel;
  m_elapsed += e.m_elapsed;
 
  return *this;
}

outputElapsedTime() [1/2]

std::string ChronoEntity::outputElapsedTime

(

)

const

print the chrono ;

Definition at line 95 of file ChronoEntity.cpp.

                                                {
  return "TimeElapsed: " +
         format( eTotalTime(), eMinimalTime(), eMeanTime(), eRMSTime(), eMaximalTime(), nOfMeasurements() );
}

outputElapsedTime() [2/2]

std::string ChronoEntity::outputElapsedTime ( std::string_view  fmt, System::TimeType  unit  ) const

inline

print the chrono according the format and units

Parameters

fmt	the format string
unit	the unit

Returns

the string representations

See also

boost::format

Definition at line 315 of file ChronoEntity.h.

                                                                                                {
  return outputTime( IChronoSvc::ELAPSED, fmt, unit );
}

outputSystemTime() [1/2]

std::string ChronoEntity::outputSystemTime

(

)

const

print the chrono ;

Definition at line 89 of file ChronoEntity.cpp.

                                               {
  return "Time System : " +
         format( kTotalTime(), kMinimalTime(), kMeanTime(), kRMSTime(), kMaximalTime(), nOfMeasurements() );
}

outputSystemTime() [2/2]

std::string ChronoEntity::outputSystemTime ( std::string_view  fmt, System::TimeType  unit  ) const

inline

print the chrono according the format and units

Parameters

fmt	the format string
unit	the unit

Returns

the string representations

See also

boost::format

Definition at line 304 of file ChronoEntity.h.

                                                                                               {
  return outputTime( IChronoSvc::KERNEL, fmt, unit );
}

outputTime()

std::string ChronoEntity::outputTime	(	IChronoSvc::ChronoType	typ,
		std::string_view	fmt,
		System::TimeType	unit
	)		const

print the chrono according the format and units

The format fields are:

1. number of entries
2. total time (in the specified units)
3. mean time (in the specified units)
4. r.m.s. time (in the specified units)
5. error in mean time (in the specified units)
6. minimal time (in the specified units)
7. maximal time (in the specified units)

Parameters

typ	the chrono type
fmt	the format string
unit	the unit

Returns

the string representations

See also

boost::format

Definition at line 168 of file ChronoEntity.cpp.

                                                                                                            {
  boost::format _fmt( std::string{ fmt } );
  // allow various number of arguments
  using namespace boost::io;
  _fmt.exceptions( all_error_bits ^ ( too_many_args_bit | too_few_args_bit ) );
  //
  double _unit = microsecond;
  switch ( unit ) {
  case System::Year:
    _unit = year;
    break;
  case System::Month:
    _unit = month;
    break;
  case System::Day:
    _unit = day;
    break;
  case System::Hour:
    _unit = hour;
    break;
  case System::Min:
    _unit = minute;
    break;
  case System::Sec:
    _unit = second;
    break;
  case System::milliSec:
    _unit = millisecond;
    break;
  case System::microSec:
    _unit = microsecond;
    break;
  case System::nanoSec:
    _unit = nanosecond;
    break;
  default:
    _unit = microsecond;
    break;
  }
  //
  const StatEntity* stat = &m_user;
  switch ( typ ) {
  case IChronoSvc::USER:
    stat = &m_user;
    break;
  case IChronoSvc::KERNEL:
    stat = &m_kernel;
    break;
  case IChronoSvc::ELAPSED:
    stat = &m_elapsed;
    break;
  default:
    stat = &m_user;
    break;
  }
  //
  _fmt % ( stat->nEntries() )           // %1 : #entries
      % ( stat->flag() / _unit )        // %2 : total time
      % ( stat->flagMean() / _unit )    // %3 : mean time
      % ( stat->flagRMS() / _unit )     // %4 : RMS  time
      % ( stat->flagMeanErr() / _unit ) // %5 : error in mean time
      % ( stat->flagMin() / _unit )     // %6 : minimal time
      % ( stat->flagMax() / _unit );    // %7 : maximal time
  //
  return _fmt.str();
}

outputUserTime() [1/2]

std::string ChronoEntity::outputUserTime

(

)

const

print the chrono ;

Definition at line 82 of file ChronoEntity.cpp.

                                             {
  return "Time User   : " +
         format( uTotalTime(), uMinimalTime(), uMeanTime(), uRMSTime(), uMaximalTime(), nOfMeasurements() );
}

outputUserTime() [2/2]

std::string ChronoEntity::outputUserTime ( std::string_view  fmt, System::TimeType  unit  ) const

inline

print the chrono according the format and units

Parameters

fmt	the format string
unit	the unit

Returns

the string representations

See also

boost::format

Definition at line 293 of file ChronoEntity.h.

                                                                                             {
  return outputTime( IChronoSvc::USER, fmt, unit );
}

start()

IChronoSvc::ChronoStatus ChronoEntity::start

(

)

start the current chrono

Definition at line 46 of file ChronoEntity.cpp.

                                           {
  if ( IChronoSvc::RUNNING == m_status ) { return m_status; }
  //
  // following lines could be platform dependent!
  //
  // Store in object the measured times
  m_start = System::getProcessTime();
 
  m_status = IChronoSvc::RUNNING;
 
  return m_status;
}

status()

IChronoSvc::ChronoStatus ChronoEntity::status ( ) const

inline

return the status of chrono

Definition at line 187 of file ChronoEntity.h.

{ return m_status; }

stop()

IChronoSvc::ChronoStatus ChronoEntity::stop

(

)

stop the chrono

Definition at line 61 of file ChronoEntity.cpp.

                                          {
  if ( IChronoSvc::RUNNING != m_status ) { return m_status; }
 
  // following lines could be platform dependent!
  m_delta = System::getProcessTime() - m_start;
 
  // update the counters:
 
  m_user += m_delta.userTime<TimeUnit>();
  m_kernel += m_delta.kernelTime<TimeUnit>();
  m_elapsed += m_delta.elapsedTime<TimeUnit>();
 
  // set new status
 
  m_status = IChronoSvc::STOPPED;
 
  return m_status;
}

totalTime()

double ChronoEntity::totalTime ( ) const

inline

total time

Definition at line 231 of file ChronoEntity.h.

{ return uTotalTime() + kTotalTime(); }

uMaximalTime()

double ChronoEntity::uMaximalTime ( ) const

inline

maximal measurement for user time

Definition at line 207 of file ChronoEntity.h.

{ return m_user.flagMax(); }

uMeanErrorTime()

double ChronoEntity::uMeanErrorTime ( ) const

inline

error in mean User time

Definition at line 263 of file ChronoEntity.h.

{ return m_user.flagMeanErr(); }

uMeanTime()

double ChronoEntity::uMeanTime ( ) const

inline

average User Time

Definition at line 239 of file ChronoEntity.h.

{ return m_user.flagMean(); }

uMinimalTime()

double ChronoEntity::uMinimalTime ( ) const

inline

minimal measurement for user time

Definition at line 195 of file ChronoEntity.h.

{ return m_user.flagMin(); }

uRMSTime()

double ChronoEntity::uRMSTime ( ) const

inline

r.m.s User Time

Definition at line 251 of file ChronoEntity.h.

{ return m_user.flagRMS(); }

uTotalTime()

double ChronoEntity::uTotalTime ( ) const

inline

total user time

Definition at line 219 of file ChronoEntity.h.

{ return m_user.flag(); }

Friends And Related Function Documentation

operator<

bool operator< ( ChronoEntity const &  lhs, ChronoEntity const &  rhs  )

friend

comparison operator

Definition at line 99 of file ChronoEntity.h.

                                                                            {
    return std::make_tuple( lhs.totalTime(), lhs.m_user, lhs.m_kernel, lhs.m_elapsed ) <
           std::make_tuple( rhs.totalTime(), rhs.m_user, rhs.m_kernel, rhs.m_elapsed );
  }

Member Data Documentation

m_delta

System::ProcessTime ChronoEntity::m_delta

private

delta process times

Definition at line 171 of file ChronoEntity.h.

m_elapsed

StatEntity ChronoEntity::m_elapsed

private

the actual storage of "elapsed" time

Definition at line 179 of file ChronoEntity.h.

m_kernel

StatEntity ChronoEntity::m_kernel

private

the actual storage of "kernel" time

Definition at line 177 of file ChronoEntity.h.

m_start

System::ProcessTime ChronoEntity::m_start

private

start stamp for current measurement of process times

Definition at line 173 of file ChronoEntity.h.

m_status

IChronoSvc::ChronoStatus ChronoEntity::m_status = IChronoSvc::UNKNOWN

private

current status of this chrono object;

Definition at line 169 of file ChronoEntity.h.

m_user

StatEntity ChronoEntity::m_user

private

the actual storage of "user" time

Definition at line 175 of file ChronoEntity.h.

TimeUnit

const System::TimeType ChronoEntity::TimeUnit = System::microSec

staticprivate

internal unit used for the system time conversion (microseconds)

Definition at line 181 of file ChronoEntity.h.

---

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

• GaudiKernel/include/GaudiKernel/ChronoEntity.h
• GaudiKernel/src/Lib/ChronoEntity.cpp