cpu

Documentation

Index

• Constants
• func GetCallerPC(argp unsafe.Pointer) uintptr
• func TimeInit() float64
• type Time
  • func TimeNow() Time
  • func (t *Time) Cycles(dt float64)
  • func (dt Time) Seconds() float64
• type Timing
  • func (t *Timing) ClocksPer(ops uint) float64
  • func (t *Timing) PerSecond(ops uint) float64

Constants

const (
	Second      float64 = 1
	Minute              = 60 * Second
	Hour                = 60 * Minute
	Day                 = 24 * Hour
	Microsecond         = 1e-6 * Second
	Millisecond         = 1e-3 * Second
)

const CacheLineBytes = 1 << Log2CacheLineBytes

const Log2CacheLineBytes = 6

Cache lines on x86 are 64 bytes.

Functions

func GetCallerPC

func GetCallerPC(argp unsafe.Pointer) uintptr

func TimeInit

func TimeInit() float64

Types

type Time

type Time uint64

func TimeNow

func TimeNow() Time

func (*Time) Cycles

func (t *Time) Cycles(dt float64)

func (Time) Seconds

func (dt Time) Seconds() float64

type Timing

type Timing [2]Time

Aid for timing blocks of code.

func (*Timing) ClocksPer

func (t *Timing) ClocksPer(ops uint) float64

Number of cpu clock cycles per operation.

func (*Timing) PerSecond

func (t *Timing) PerSecond(ops uint) float64

Number of operations per second.