Struct criterion_cycles_per_byte::CyclesPerByte

pub struct CyclesPerByte;

CyclesPerByte measures clock cycles using the x86 or x86_64 rdtsc instruction. cpb is the preferred measurement for cryptographic algorithms.

Trait Implementations

impl Measurement for CyclesPerByte

type Intermediate = u64

This type represents an intermediate value for the measurements. It will be produced by the start function and passed to the end function. An example might be the wall-clock time as of the start call.

type Value = u64

This type is the measured value. An example might be the elapsed wall-clock time between the start and end calls.

fn start(&self) -> Self::Intermediate

Criterion.rs will call this before iterating the benchmark.

fn end(&self, i: Self::Intermediate) -> Self::Value

Criterion.rs will call this after iterating the benchmark to get the measured value.

fn add(&self, v1: &Self::Value, v2: &Self::Value) -> Self::Value

Combine two values. Criterion.rs sometimes needs to perform measurements in multiple batches of iterations, so the value from one batch must be added to the sum of the previous batches.

fn zero(&self) -> Self::Value

Return a “zero” value for the Value type which can be added to another value.

fn to_f64(&self, value: &Self::Value) -> f64

Converts the measured value to f64 so that it can be used in statistical analysis.

fn formatter(&self) -> &dyn ValueFormatter

Return a trait-object reference to the value formatter for this measurement.