Nektar::Timer Class Reference

#include <Timer.h>

Public Types
typedef timespec	CounterType

Public Member Functions
	Timer ()
	~Timer ()
void	Start ()
void	Stop ()
CounterType	Elapsed ()
NekDouble	TimePerTest (unsigned int n)
	Returns amount of seconds per iteration in a test with n iterations. More...

Private Member Functions
	Timer (const Timer &rhs)
Timer &	operator= (const Timer &rhs)

Private Attributes
CounterType	m_start
CounterType	m_end
CounterType	m_resolution

Detailed Description

Definition at line 52 of file Timer.h.

Member Typedef Documentation

typedef timespec Nektar::Timer::CounterType

Definition at line 60 of file Timer.h.

Constructor & Destructor Documentation

Nektar::Timer::Timer

(

)

Definition at line 40 of file Timer.cpp.

                 :
        m_start(),
        m_end(),
        m_resolution()
    {
    }

Nektar::Timer::~Timer

(

)

Definition at line 47 of file Timer.cpp.

    {
    }

Nektar::Timer::Timer ( const Timer &  rhs )

private

Member Function Documentation

Timer::CounterType Nektar::Timer::Elapsed

(

)

Definition at line 73 of file Timer.cpp.

References m_end, and m_start.

Referenced by TimePerTest().

    {
        #ifdef _WIN32
            CounterType result;
            result.QuadPart = m_end.QuadPart - m_start.QuadPart;
            return result;
        #elif defined(__APPLE__)
            CounterType result = m_end;
            
            if( result.tv_usec < m_start.tv_usec) 
            {
                result.tv_sec -= 1;
                result.tv_usec += 1000000;
            }
            
            result.tv_sec -= m_start.tv_sec;
            result.tv_usec -= m_start.tv_usec;
            
            return result;
        #else
            CounterType result = m_end;

            if( result.tv_nsec < m_start.tv_nsec) 
            {
                result.tv_sec -= 1;
                result.tv_nsec += 1000000000;
            }
            
            result.tv_sec -= m_start.tv_sec;
            result.tv_nsec -= m_start.tv_nsec;

            return result;
        #endif
    }

Timer& Nektar::Timer::operator= ( const Timer &  rhs )

private

void Nektar::Timer::Start

(

)

Definition at line 51 of file Timer.cpp.

References m_start.

Referenced by Nektar::SolverUtils::DriverSteadyState::ConvergenceHistory(), Nektar::LibUtilities::AnalyticExpressionEvaluator::Evaluate(), Nektar::LibUtilities::AnalyticExpressionEvaluator::EvaluateAtPoint(), main(), Nektar::FieldUtils::InputXml::Process(), Nektar::Utilities::ProcessVarOpti::Process(), Nektar::FieldUtils::ProcessIsoContour::Process(), Nektar::CoupledLinearNS::SetUpCoupledMatrix(), Nektar::Collections::CollectionOptimisation::SetWithTimings(), Nektar::CoupledLinearNS::SolveSteadyNavierStokes(), Nektar::SolverUtils::UnsteadySystem::v_DoSolve(), Nektar::PulseWaveSystem::v_DoSolve(), Nektar::CoupledLinearNS::v_DoSolve(), and Nektar::SolverUtils::DriverSteadyState::v_Execute().

    {
        #ifdef _WIN32
            QueryPerformanceCounter(&m_start);
        #elif defined(__APPLE__)
            gettimeofday(&m_start, 0);
        #else 
            clock_gettime(CLOCK_REALTIME, &m_start);
        #endif
    }

void Nektar::Timer::Stop

(

)

Definition at line 62 of file Timer.cpp.

References m_end.

Referenced by Nektar::SolverUtils::DriverSteadyState::ConvergenceHistory(), Nektar::LibUtilities::AnalyticExpressionEvaluator::Evaluate(), Nektar::LibUtilities::AnalyticExpressionEvaluator::EvaluateAtPoint(), main(), Nektar::FieldUtils::InputXml::Process(), Nektar::Utilities::ProcessVarOpti::Process(), Nektar::FieldUtils::ProcessIsoContour::Process(), Nektar::CoupledLinearNS::SetUpCoupledMatrix(), Nektar::Collections::CollectionOptimisation::SetWithTimings(), Nektar::CoupledLinearNS::SolveSteadyNavierStokes(), Nektar::SolverUtils::UnsteadySystem::v_DoSolve(), Nektar::PulseWaveSystem::v_DoSolve(), and Nektar::CoupledLinearNS::v_DoSolve().

    {
        #ifdef _WIN32
            QueryPerformanceCounter(&m_end);
        #elif defined(__APPLE__)
            gettimeofday(&m_end, 0);
        #else 
            clock_gettime(CLOCK_REALTIME, &m_end);
        #endif
    }

NekDouble Nektar::Timer::TimePerTest

(

unsigned int

n

)

Returns amount of seconds per iteration in a test with n iterations.

Definition at line 108 of file Timer.cpp.

References Elapsed().

Referenced by Nektar::SolverUtils::DriverSteadyState::ConvergenceHistory(), Nektar::LibUtilities::AnalyticExpressionEvaluator::Evaluate(), Nektar::LibUtilities::AnalyticExpressionEvaluator::EvaluateAtPoint(), main(), Nektar::FieldUtils::InputXml::Process(), Nektar::Utilities::ProcessVarOpti::Process(), Nektar::FieldUtils::ProcessIsoContour::Process(), Nektar::CoupledLinearNS::SetUpCoupledMatrix(), Nektar::Collections::CollectionOptimisation::SetWithTimings(), Nektar::CoupledLinearNS::SolveSteadyNavierStokes(), Nektar::SolverUtils::UnsteadySystem::v_DoSolve(), Nektar::PulseWaveSystem::v_DoSolve(), and Nektar::CoupledLinearNS::v_DoSolve().

    {
        #ifdef _WIN32
            CounterType frequency;
            QueryPerformanceFrequency(&frequency);
            return Elapsed().QuadPart/static_cast<NekDouble>(n) * 1.0/frequency.QuadPart;
        #elif defined(__APPLE__)
            CounterType elapsed = Elapsed();
            NekDouble result = elapsed.tv_sec/static_cast<NekDouble>(n) +
                ( elapsed.tv_usec/static_cast<NekDouble>(n) * 1.0e-6);
            return result;
        #else
            CounterType elapsed = Elapsed();
            NekDouble result = elapsed.tv_sec/static_cast<NekDouble>(n) +
                ( elapsed.tv_nsec/static_cast<NekDouble>(n) * 1.0e-9);
            return result;
        #endif
    }

Member Data Documentation

CounterType Nektar::Timer::m_end

private

Definition at line 80 of file Timer.h.

Referenced by Elapsed(), and Stop().

CounterType Nektar::Timer::m_resolution

private

Definition at line 81 of file Timer.h.

CounterType Nektar::Timer::m_start

private

Definition at line 79 of file Timer.h.

Referenced by Elapsed(), and Start().