edm::WallclockTimer Class Reference

#include <WallclockTimer.h>

Public Member Functions
void	add (double t)
double	realTime () const
void	reset ()
void	start ()
double	stop ()
	WallclockTimer ()
	WallclockTimer (WallclockTimer &&)=default
	~WallclockTimer ()

Private Types
enum	State { kRunning, kStopped }

Private Member Functions
double	calculateDeltaTime () const
const WallclockTimer &	operator= (const WallclockTimer &)=delete
	WallclockTimer (const WallclockTimer &)=delete

Private Attributes
double	accumulatedRealTime_
struct timeval	startRealTime_
enum edm::WallclockTimer::State	state_

Detailed Description

Definition at line 37 of file WallclockTimer.h.

Member Enumeration Documentation

enum edm::WallclockTimer::State

private

Enumerator
kRunning
kStopped

Definition at line 64 of file WallclockTimer.h.

{kRunning, kStopped} state_;

Constructor & Destructor Documentation

WallclockTimer::WallclockTimer

(

)

Definition at line 33 of file WallclockTimer.cc.

References startRealTime_.

                               :
state_(kStopped),
startRealTime_(),
accumulatedRealTime_(0)
{
#ifdef USE_CLOCK_GETTIME
  startRealTime_.tv_sec=0;
  startRealTime_.tv_nsec=0;
#else
  startRealTime_.tv_sec=0;
  startRealTime_.tv_usec=0;
#endif
}

WallclockTimer::~WallclockTimer

(

)

Definition at line 51 of file WallclockTimer.cc.

                                {
}

edm::WallclockTimer::WallclockTimer ( WallclockTimer &&  )

default

edm::WallclockTimer::WallclockTimer ( const WallclockTimer &  )

privatedelete

Member Function Documentation

void WallclockTimer::add

(

double

t

)

Definition at line 98 of file WallclockTimer.cc.

References accumulatedRealTime_, and edmStreamStallGrapher::t.

Referenced by counter.Counter::register().

                            {
  accumulatedRealTime_ += t;
}

double WallclockTimer::calculateDeltaTime ( ) const

private

Definition at line 103 of file WallclockTimer.cc.

References CLOCK_MONOTONIC, and startRealTime_.

Referenced by realTime(), and stop().

                                         {
  double returnValue;
#ifdef USE_CLOCK_GETTIME
  double const nanosecToSec = 1E-9;
  struct timespec tp;

  clock_gettime(CLOCK_MONOTONIC, &tp);
  returnValue = tp.tv_sec - startRealTime_.tv_sec + nanosecToSec * (tp.tv_nsec - startRealTime_.tv_nsec);
#else
  double const microsecToSec = 1E-6;

  struct timeval tp;
  gettimeofday(&tp, 0);

  returnValue = tp.tv_sec - startRealTime_.tv_sec + microsecToSec * (tp.tv_usec - startRealTime_.tv_usec);
#endif
  return returnValue;
}

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

privatedelete

double WallclockTimer::realTime

(

)

const

Definition at line 125 of file WallclockTimer.cc.

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

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

void WallclockTimer::reset

(

void

)

Definition at line 93 of file WallclockTimer.cc.

References accumulatedRealTime_.

                      {
  accumulatedRealTime_ = 0;
}

void WallclockTimer::start

(

void

)

Definition at line 69 of file WallclockTimer.cc.

References CLOCK_MONOTONIC, kRunning, kStopped, startRealTime_, and state_.

Referenced by progressbar.ProgressBar::__next__().

                      {
  if(kStopped == state_) {
#ifdef USE_CLOCK_GETTIME
    clock_gettime(CLOCK_MONOTONIC, &startRealTime_);
#else
    gettimeofday(&startRealTime_, 0);
#endif
    state_ = kRunning;
  }
}

double WallclockTimer::stop

(

)

Definition at line 81 of file WallclockTimer.cc.

References accumulatedRealTime_, calculateDeltaTime(), kRunning, kStopped, state_, and edmStreamStallGrapher::t.

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

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

Member Data Documentation

double edm::WallclockTimer::accumulatedRealTime_

private

Definition at line 71 of file WallclockTimer.h.

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

struct timeval edm::WallclockTimer::startRealTime_

private

Definition at line 68 of file WallclockTimer.h.

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

enum edm::WallclockTimer::State edm::WallclockTimer::state_

private

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