FastTimer Class Reference

#include <FastTimer.h>

Public Types
typedef std::chrono::high_resolution_clock	Clock
typedef std::chrono::nanoseconds	Duration
enum	State { State::kStopped, State::kRunning, State::kPaused }

Public Member Functions
	FastTimer ()
Clock::time_point const &	getStartTime () const
Clock::time_point const &	getStopTime () const
void	pause ()
void	reset ()
void	resume ()
double	seconds () const
double	secondsUntilNow () const
void	setStartTime (Clock::time_point const &)
void	setStopTime (Clock::time_point const &)
void	start ()
State	state () const
void	stop ()
Duration	untilNow () const
Duration	value () const

Private Member Functions
std::string const &	describe () const

Private Attributes
Duration	m_duration
Clock::time_point	m_start
State	m_state
Clock::time_point	m_stop

Detailed Description

Definition at line 7 of file FastTimer.h.

Member Typedef Documentation

typedef std::chrono::high_resolution_clock FastTimer::Clock

Definition at line 9 of file FastTimer.h.

typedef std::chrono::nanoseconds FastTimer::Duration

Definition at line 10 of file FastTimer.h.

Member Enumeration Documentation

enum FastTimer::State

strong

Enumerator
kStopped
kRunning
kPaused

Definition at line 11 of file FastTimer.h.

                   {
    kStopped,
    kRunning,
    kPaused
  };

Constructor & Destructor Documentation

FastTimer::FastTimer

(

)

Definition at line 9 of file FastTimer.cc.

                     :
  m_start(),
  m_stop(),
  m_duration(Duration::zero()),
  m_state(State::kStopped)
{ }

Member Function Documentation

std::string const & FastTimer::describe ( ) const

private

Definition at line 95 of file FastTimer.cc.

References kPaused, kRunning, kStopped, and m_state.

Referenced by pause(), resume(), setStartTime(), setStopTime(), start(), and stop().

                                            {
  static const std::vector<std::string> states{ "stopped", "running", "paused", "unknown" };

  switch (m_state) {
    case FastTimer::State::kStopped:
    case FastTimer::State::kRunning:
    case FastTimer::State::kPaused:
      return states[static_cast<unsigned int>(m_state)];

    default:
      return states.back();
  }
}

FastTimer::Clock::time_point const & FastTimer::getStartTime

(

)

const

Definition at line 109 of file FastTimer.cc.

References m_start.

                                                               {
  return m_start;
}

FastTimer::Clock::time_point const & FastTimer::getStopTime

(

)

const

Definition at line 113 of file FastTimer.cc.

References m_stop.

                                                              {
  return m_stop;
}

void FastTimer::pause

(

)

Definition at line 40 of file FastTimer.cc.

References dtNoiseDBValidation_cfg::cerr, describe(), kPaused, kRunning, m_duration, m_start, m_state, m_stop, and cmsPerfSuiteHarvest::now.

Referenced by FastTimerService::preModuleEventDelayedGet().

                      {
  if (m_state == State::kRunning) {
    m_stop     = Clock::now();
    m_duration += std::chrono::duration_cast<Duration>(m_stop - m_start);
    m_state    = State::kPaused;
  } else {
    std::cerr << "attempting to pause a " << describe() << " timer" << std::endl;
  }
}

void FastTimer::reset

(

void

)

Definition at line 62 of file FastTimer.cc.

References kStopped, m_duration, m_start, m_state, and m_stop.

Referenced by FastTimerService::ModuleInfo::reset(), FastTimerService::PathInfo::reset(), and FastTimerService::StreamData::reset().

                      {
  m_start    = Clock::time_point();
  m_stop     = Clock::time_point();
  m_duration = Duration::zero();
  m_state    = State::kStopped;
}

void FastTimer::resume

(

)

Definition at line 51 of file FastTimer.cc.

References dtNoiseDBValidation_cfg::cerr, describe(), kPaused, kRunning, m_start, m_state, m_stop, and cmsPerfSuiteHarvest::now.

Referenced by FastTimerService::postModuleEventDelayedGet().

                       {
  if (m_state == State::kPaused) {
    m_start    = Clock::now();
    m_stop     = Clock::time_point();
    m_state    = State::kRunning;
  } else {
    std::cerr << "attempting to resume a " << describe() << " timer" << std::endl;
  }
}

double FastTimer::seconds

(

)

const

Definition at line 75 of file FastTimer.cc.

References prof2calltree::count, and m_duration.

Referenced by FastTimerService::postModuleEvent().

                                {
  return std::chrono::duration_cast<std::chrono::duration<double>>(m_duration).count();
}

double FastTimer::secondsUntilNow

(

)

const

Definition at line 85 of file FastTimer.cc.

References prof2calltree::count, and untilNow().

                                        {
  return std::chrono::duration_cast<std::chrono::duration<double>>(untilNow()).count();
}

void FastTimer::setStartTime

(

Clock::time_point const &

)

Definition at line 117 of file FastTimer.cc.

References dtNoiseDBValidation_cfg::cerr, describe(), kRunning, kStopped, m_duration, m_start, m_state, m_stop, and cond::rpcobgas::time.

                                                                  {
  if (m_state == State::kStopped) {
    m_start    = time;
    m_stop     = Clock::time_point();
    m_duration = Duration::zero();
    m_state    = State::kRunning;
  } else {
    std::cerr << "attempting to start a " << describe() << " timer" << std::endl;
  }
}

void FastTimer::setStopTime

(

Clock::time_point const &

)

Definition at line 128 of file FastTimer.cc.

References dtNoiseDBValidation_cfg::cerr, describe(), kRunning, kStopped, m_duration, m_start, m_state, m_stop, and cond::rpcobgas::time.

                                                                 {
  if (m_state == State::kRunning) {
    m_stop     = time;
    m_duration += std::chrono::duration_cast<Duration>(m_stop - m_start);
    m_state    = State::kStopped;
  } else {
    std::cerr << "attempting to stop a " << describe() << " timer" << std::endl;
  }
}

void FastTimer::start

(

void

)

Definition at line 17 of file FastTimer.cc.

References dtNoiseDBValidation_cfg::cerr, describe(), kRunning, kStopped, m_duration, m_start, m_state, m_stop, and cmsPerfSuiteHarvest::now.

Referenced by progressbar.ProgressBar::__next__(), and FastTimerService::preModuleEvent().

                      {
  if (m_state == State::kStopped) {
    m_start    = Clock::now();
    m_stop     = Clock::time_point();
    m_duration = Duration::zero();
    m_state    = State::kRunning;
  } else {
    std::cerr << "attempting to start a " << describe() << " timer" << std::endl;
  }
}

FastTimer::State FastTimer::state

(

)

const

Definition at line 90 of file FastTimer.cc.

References m_state.

                                      {
  return m_state;
}

void FastTimer::stop

(

)

Definition at line 29 of file FastTimer.cc.

References dtNoiseDBValidation_cfg::cerr, describe(), kRunning, kStopped, m_duration, m_start, m_state, m_stop, and cmsPerfSuiteHarvest::now.

Referenced by FastTimerService::postModuleEvent().

                     {
  if (m_state == State::kRunning) {
    m_stop     = Clock::now();
    m_duration += std::chrono::duration_cast<Duration>(m_stop - m_start);
    m_state    = State::kStopped;
  } else {
    std::cerr << "attempting to stop a " << describe() << " timer" << std::endl;
  }
}

FastTimer::Duration FastTimer::untilNow

(

)

const

Definition at line 81 of file FastTimer.cc.

References kRunning, m_duration, m_start, m_state, and cmsPerfSuiteHarvest::now.

Referenced by secondsUntilNow().

                                            {
  return m_duration + ( (m_state == State::kRunning) ? std::chrono::duration_cast<Duration>(Clock::now() - m_start) : Duration::zero() );
}

FastTimer::Duration FastTimer::value

(

void

)

const

Definition at line 70 of file FastTimer.cc.

References m_duration.

                                         {
  return m_duration;
}

Member Data Documentation

Duration FastTimer::m_duration

private

Definition at line 40 of file FastTimer.h.

Referenced by pause(), reset(), seconds(), setStartTime(), setStopTime(), start(), stop(), untilNow(), and value().

Clock::time_point FastTimer::m_start

private

Definition at line 38 of file FastTimer.h.

Referenced by getStartTime(), pause(), reset(), resume(), setStartTime(), setStopTime(), start(), stop(), and untilNow().

State FastTimer::m_state

private

Definition at line 41 of file FastTimer.h.

Referenced by describe(), pause(), reset(), resume(), setStartTime(), setStopTime(), start(), state(), stop(), and untilNow().

Clock::time_point FastTimer::m_stop

private

Definition at line 39 of file FastTimer.h.

Referenced by getStopTime(), pause(), reset(), resume(), setStartTime(), setStopTime(), start(), and stop().