edm::ChildrenCPUTimer Class Reference

#include <ChildrenCPUTimer.h>

Public Member Functions
void	add (double t)
	ChildrenCPUTimer ()
	ChildrenCPUTimer (ChildrenCPUTimer &&)=default
	ChildrenCPUTimer (const ChildrenCPUTimer &)=delete
double	cpuTime () const
ChildrenCPUTimer &	operator= (const ChildrenCPUTimer &)=delete
void	reset ()
void	start ()
double	stop ()
	~ChildrenCPUTimer ()

Private Types
enum	State { kRunning, kStopped }

Private Member Functions
double	calculateDeltaTime () const

Private Attributes
double	accumulatedCPUTime_
struct timeval	startCPUTime_
enum edm::ChildrenCPUTimer::State	state_

Detailed Description

Definition at line 28 of file ChildrenCPUTimer.h.

Member Enumeration Documentation

enum edm::ChildrenCPUTimer::State

private

Enumerator
kRunning
kStopped

Definition at line 52 of file ChildrenCPUTimer.h.

{ kRunning, kStopped } state_;

Constructor & Destructor Documentation

ChildrenCPUTimer::ChildrenCPUTimer

(

)

Definition at line 33 of file ChildrenCPUTimer.cc.

References startCPUTime_.

                                   : state_(kStopped), startCPUTime_(), accumulatedCPUTime_(0) {
  startCPUTime_.tv_sec = 0;
  startCPUTime_.tv_usec = 0;
}

ChildrenCPUTimer::~ChildrenCPUTimer

(

)

Definition at line 38 of file ChildrenCPUTimer.cc.

{}

edm::ChildrenCPUTimer::ChildrenCPUTimer ( ChildrenCPUTimer &&  )

default

edm::ChildrenCPUTimer::ChildrenCPUTimer ( const ChildrenCPUTimer &  )

delete

Member Function Documentation

void ChildrenCPUTimer::add

(

double

t

)

Definition at line 68 of file ChildrenCPUTimer.cc.

References accumulatedCPUTime_, and submitPVValidationJobs::t.

Referenced by counter.Counter::register().

{ accumulatedCPUTime_ += t; }

double ChildrenCPUTimer::calculateDeltaTime ( ) const

private

Definition at line 70 of file ChildrenCPUTimer.cc.

References Exception, and startCPUTime_.

Referenced by cpuTime(), and stop().

                                                  {
  double returnValue;
  double const microsecToSec = 1E-6;

  rusage theUsage;
  if (0 != getrusage(RUSAGE_CHILDREN, &theUsage)) {
    throw cms::Exception("CPUTimerFailed") << errno;
  }

  returnValue = theUsage.ru_stime.tv_sec + theUsage.ru_utime.tv_sec - startCPUTime_.tv_sec +
                microsecToSec * (theUsage.ru_stime.tv_usec + theUsage.ru_utime.tv_usec - startCPUTime_.tv_usec);
  return returnValue;
}

double ChildrenCPUTimer::cpuTime

(

)

const

Definition at line 86 of file ChildrenCPUTimer.cc.

References accumulatedCPUTime_, calculateDeltaTime(), kStopped, and state_.

Referenced by edm::SystemTimeKeeper::fillTriggerTimingReport().

                                       {
  if (kStopped == state_) {
    return accumulatedCPUTime_;
  }
  return accumulatedCPUTime_ + calculateDeltaTime();
}

ChildrenCPUTimer& edm::ChildrenCPUTimer::operator= ( const ChildrenCPUTimer &  )

delete

void ChildrenCPUTimer::reset

(

void

)

Definition at line 66 of file ChildrenCPUTimer.cc.

References accumulatedCPUTime_.

{ accumulatedCPUTime_ = 0; }

void ChildrenCPUTimer::start

(

)

Definition at line 43 of file ChildrenCPUTimer.cc.

References Exception, kRunning, kStopped, startCPUTime_, and state_.

Referenced by progressbar.ProgressBar::__next__(), and edm::SystemTimeKeeper::startProcessingLoop().

                             {
  if (kStopped == state_) {
    rusage theUsage;
    if (0 != getrusage(RUSAGE_CHILDREN, &theUsage)) {
      throw cms::Exception("ChildrenCPUTimerFailed") << errno;
    }
    startCPUTime_.tv_sec = theUsage.ru_stime.tv_sec + theUsage.ru_utime.tv_sec;
    startCPUTime_.tv_usec = theUsage.ru_stime.tv_usec + theUsage.ru_utime.tv_usec;
    state_ = kRunning;
  }
}

double ChildrenCPUTimer::stop

(

)

Definition at line 55 of file ChildrenCPUTimer.cc.

References accumulatedCPUTime_, calculateDeltaTime(), kRunning, kStopped, state_, and submitPVValidationJobs::t.

Referenced by edm::SystemTimeKeeper::stopProcessingLoop().

                              {
  if (kRunning == state_) {
    auto t = calculateDeltaTime();
    accumulatedCPUTime_ += t;

    state_ = kStopped;
    return t;
  }
  return 0.;
}

Member Data Documentation

double edm::ChildrenCPUTimer::accumulatedCPUTime_

private

Definition at line 55 of file ChildrenCPUTimer.h.

Referenced by add(), cpuTime(), reset(), and stop().

struct timeval edm::ChildrenCPUTimer::startCPUTime_

private

Definition at line 53 of file ChildrenCPUTimer.h.

Referenced by calculateDeltaTime(), ChildrenCPUTimer(), and start().

enum edm::ChildrenCPUTimer::State edm::ChildrenCPUTimer::state_

private

Referenced by cpuTime(), start(), and stop().