GetTime Namespace Reference

Functions
static double	GetTimeUs ()
static double	GetTime ()
static size_t	Rdtsc ()
	Return the TSC. More...
static size_t	WorkerRdtsc ()
static void	NanoSleep (size_t ns, double freq_ghz)
	Sleep for some nanoseconds. More...
static double	MeasureRdtscFreq ()
static double	CyclesToSec (size_t cycles, double freq_ghz)
	Convert cycles measured by rdtsc with frequence freq_ghz to seconds. More...
static double	CyclesToMs (size_t cycles, double freq_ghz)
static double	CyclesToUs (size_t cycles, double freq_ghz)
static double	CyclesToNs (size_t cycles, double freq_ghz)
static size_t	MsToCycles (double ms, double freq_ghz)
static size_t	UsToCycles (double us, double freq_ghz)
static size_t	NsToCycles (double ns, double freq_ghz)
static double	SecSince (const struct timespec &t0)
	Return seconds elapsed since timestamp t0. More...
static double	NsSince (const struct timespec &t0)
	Return nanoseconds elapsed since timestamp t0. More...

Function Documentation

CyclesToMs()

static double GetTime::CyclesToMs ( size_t  cycles, double  freq_ghz  )

inlinestatic

Convert cycles measured by rdtsc with frequence freq_ghz to milliseconds

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CyclesToNs()

static double GetTime::CyclesToNs ( size_t  cycles, double  freq_ghz  )

inlinestatic

Convert cycles measured by rdtsc with frequence freq_ghz to nanoseconds

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CyclesToSec()

static double GetTime::CyclesToSec ( size_t  cycles, double  freq_ghz  )

inlinestatic

Convert cycles measured by rdtsc with frequence freq_ghz to seconds.

CyclesToUs()

static double GetTime::CyclesToUs ( size_t  cycles, double  freq_ghz  )

inlinestatic

Convert cycles measured by rdtsc with frequence freq_ghz to microseconds

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GetTime()

static double GetTime::GetTime ( )

inlinestatic

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GetTimeUs()

static double GetTime::GetTimeUs ( )

inlinestatic

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MeasureRdtscFreq()

static double GetTime::MeasureRdtscFreq ( )

inlinestatic

Measure the frequency of RDTSC based by comparing against CLOCK_REALTIME. This is a pretty function that should be called only during initialization.

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MsToCycles()

static size_t GetTime::MsToCycles ( double  ms, double  freq_ghz  )

inlinestatic

NanoSleep()

static void GetTime::NanoSleep ( size_t  ns, double  freq_ghz  )

inlinestatic

Sleep for some nanoseconds.

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NsSince()

static double GetTime::NsSince ( const struct timespec &  t0 )

inlinestatic

Return nanoseconds elapsed since timestamp t0.

NsToCycles()

static size_t GetTime::NsToCycles ( double  ns, double  freq_ghz  )

inlinestatic

Rdtsc()

static size_t GetTime::Rdtsc ( )

inlinestatic

Return the TSC.

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SecSince()

static double GetTime::SecSince ( const struct timespec &  t0 )

inlinestatic

Return seconds elapsed since timestamp t0.

UsToCycles()

static size_t GetTime::UsToCycles ( double  us, double  freq_ghz  )

inlinestatic

WorkerRdtsc()

static size_t GetTime::WorkerRdtsc ( )

inlinestatic

Return the TSC or zero, depending on whether timing of workers is enabled

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