Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer Class Reference

A scoped timer that starts/stops on con/de-struction. More...

#include </builds/gaudi/Gaudi/GaudiKernel/include/Gaudi/Timers/GenericTimer.h>

Collaboration diagram for Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer:

Public Member Functions
	ScopeTimer (Stats_t &stat)
	Start Scoped timer accumulating into stat.
	~ScopeTimer ()
	Destructor stopping timer.
auto	elapsed () const
	Return the elapsed time without stopping the timer.

Private Member Functions
void	stop () const
	Stop the timer, accumulate elapsed time and return current measurement.

Private Attributes
Stats_t &	m_stats
	reference to statistics counter
Clock::time_point	m_t0
	start time of timer

Detailed Description

template<typename Clock, typename Unit>
class Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer

A scoped timer that starts/stops on con/de-struction.

Definition at line 51 of file GenericTimer.h.

Constructor & Destructor Documentation

ScopeTimer()

template<typename Clock, typename Unit>

Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer::ScopeTimer ( Stats_t & stat )

inline

Start Scoped timer accumulating into stat.

Definition at line 54 of file GenericTimer.h.

: m_stats( stat ), m_t0( Clock::now() ) {}

~ScopeTimer()

template<typename Clock, typename Unit>

Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer::~ScopeTimer ( )

inline

Destructor stopping timer.

Definition at line 57 of file GenericTimer.h.

{ stop(); }

Member Function Documentation

elapsed()

template<typename Clock, typename Unit>

auto Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer::elapsed ( ) const

inline

Return the elapsed time without stopping the timer.

Returns

std::chrono::duration<Unit>

Definition at line 61 of file GenericTimer.h.

                             {
          // Fenced according to https://codereview.stackexchange.com/q/196245
          std::atomic_thread_fence( std::memory_order_relaxed );
          auto dt = Clock::now() - m_t0;
          std::atomic_thread_fence( std::memory_order_relaxed );
          return std::chrono::duration_cast<Unit>( dt );
        }

stop()

template<typename Clock, typename Unit>

void Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer::stop ( ) const

inlineprivate

Stop the timer, accumulate elapsed time and return current measurement.

Definition at line 71 of file GenericTimer.h.

{ m_stats += elapsed(); }

Member Data Documentation

m_stats

template<typename Clock, typename Unit>

Stats_t& Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer::m_stats

private

reference to statistics counter

Definition at line 73 of file GenericTimer.h.

m_t0

template<typename Clock, typename Unit>

Clock::time_point Gaudi::Timers::GenericTimer< Clock, Unit >::ScopeTimer::m_t0

private

start time of timer

Definition at line 74 of file GenericTimer.h.

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

• GaudiKernel/include/Gaudi/Timers/GenericTimer.h