timer.h File Reference

#include <algorithm>
#include <cmath>
#include <numeric>
#include <vector>

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Classes
class	TscTimer
	Simple time that uses RDTSC. More...

Functions
static size_t	rdtsc ()
	Return the TSC. More...
static void	nano_sleep (size_t ns, double freq_ghz)
static double	measure_rdtsc_freq ()
static double	to_sec (size_t cycles, double freq_ghz)
	Convert cycles measured by rdtsc with frequence freq_ghz to seconds. More...
static double	to_msec (size_t cycles, double freq_ghz)
	Convert cycles measured by rdtsc with frequence freq_ghz to msec. More...
static double	to_usec (size_t cycles, double freq_ghz)
	Convert cycles measured by rdtsc with frequence freq_ghz to usec. More...
static size_t	us_to_cycles (double us, double freq_ghz)
static size_t	ns_to_cycles (double ns, double freq_ghz)
static double	to_nsec (size_t cycles, double freq_ghz)
	Convert cycles measured by rdtsc with frequence freq_ghz to nsec. More...
static double	sec_since (const struct timespec &t0)
	Return seconds elapsed since timestamp t0. More...
static double	ns_since (const struct timespec &t0)
	Return nanoseconds elapsed since timestamp t0. More...
static double	stddev (const std::vector< double > in_vec)
static double	mean (const std::vector< double > in_vec)

Variables
static const auto &	dpath_rdtsc = rdtsc
	An alias for rdtsc() to distinguish calls on the critical path. More...

Function Documentation

mean()

static double mean ( const std::vector< double >  in_vec )

static

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measure_rdtsc_freq()

static double measure_rdtsc_freq ( )

static

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nano_sleep()

static void nano_sleep ( size_t  ns, double  freq_ghz  )

static

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ns_since()

static double ns_since ( const struct timespec &  t0 )

static

Return nanoseconds elapsed since timestamp t0.

ns_to_cycles()

static size_t ns_to_cycles ( double  ns, double  freq_ghz  )

static

rdtsc()

static size_t rdtsc ( )

inlinestatic

Return the TSC.

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sec_since()

static double sec_since ( const struct timespec &  t0 )

static

Return seconds elapsed since timestamp t0.

stddev()

static double stddev ( const std::vector< double >  in_vec )

static

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to_msec()

static double to_msec ( size_t  cycles, double  freq_ghz  )

static

Convert cycles measured by rdtsc with frequence freq_ghz to msec.

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to_nsec()

static double to_nsec ( size_t  cycles, double  freq_ghz  )

static

Convert cycles measured by rdtsc with frequence freq_ghz to nsec.

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to_sec()

static double to_sec ( size_t  cycles, double  freq_ghz  )

static

Convert cycles measured by rdtsc with frequence freq_ghz to seconds.

to_usec()

static double to_usec ( size_t  cycles, double  freq_ghz  )

static

Convert cycles measured by rdtsc with frequence freq_ghz to usec.

us_to_cycles()

static size_t us_to_cycles ( double  us, double  freq_ghz  )

static

Variable Documentation

dpath_rdtsc

const auto& dpath_rdtsc = rdtsc

static

An alias for rdtsc() to distinguish calls on the critical path.