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

State

enum edm::WallclockTimer::State

private

Enumerator
kRunning
kStopped

Definition at line 63 of file WallclockTimer.h.

{ kRunning, kStopped } state_;

Constructor & Destructor Documentation

WallclockTimer() [1/3]

WallclockTimer::WallclockTimer

(

)

Definition at line 33 of file WallclockTimer.cc.

                               : 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
}

References startRealTime_.

~WallclockTimer()

WallclockTimer::~WallclockTimer

(

)

Definition at line 47 of file WallclockTimer.cc.

{}

WallclockTimer() [2/3]

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

default

WallclockTimer() [3/3]

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

privatedelete

Member Function Documentation

add()

void WallclockTimer::add

(

double

t

)

Definition at line 87 of file WallclockTimer.cc.

{ accumulatedRealTime_ += t; }

References accumulatedRealTime_, and OrderedSet::t.

Referenced by counter.Counter::register().

calculateDeltaTime()

double WallclockTimer::calculateDeltaTime ( ) const

private

Definition at line 89 of file WallclockTimer.cc.

                                                {
  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;
}

References startRealTime_, and cmsswSequenceInfo::tp.

Referenced by realTime(), and stop().

operator=()

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

privatedelete

realTime()

double WallclockTimer::realTime

(

)

const

Definition at line 110 of file WallclockTimer.cc.

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

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

reset()

void WallclockTimer::reset

(

void

)

Definition at line 85 of file WallclockTimer.cc.

{ accumulatedRealTime_ = 0; }

References accumulatedRealTime_.

start()

void WallclockTimer::start

(

)

Definition at line 63 of file WallclockTimer.cc.

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

References kRunning, kStopped, startRealTime_, and state_.

Referenced by progressbar.ProgressBar::__next__().

stop()

double WallclockTimer::stop

(

)

Definition at line 74 of file WallclockTimer.cc.

                            {
  if (kRunning == state_) {
    auto t = calculateDeltaTime();
    accumulatedRealTime_ += t;
 
    state_ = kStopped;
    return t;
  }
  return 0.;
}

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

Member Data Documentation

accumulatedRealTime_

double edm::WallclockTimer::accumulatedRealTime_

private

Definition at line 70 of file WallclockTimer.h.

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

startRealTime_

struct timeval edm::WallclockTimer::startRealTime_

private

Definition at line 67 of file WallclockTimer.h.

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

state_

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

private

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