Struct ComputeDispatchTimer 

pub struct ComputeDispatchTimer {
    pub elapsed_ns: Option<u64>,
}

Wall-clock timer for a single compute dispatch.

Usage:

use oxiphysics_gpu::compute::timestamp::ComputeDispatchTimer;

let start = ComputeDispatchTimer::start_cpu();
// ... do work ...
let timer = ComputeDispatchTimer::stop_cpu(start);
if let Some(ms) = timer.elapsed_ms() {
    println!("dispatch took {ms:.3} ms");
}

Fields

elapsed_ns: Option<u64>

Elapsed time in nanoseconds, set after stop_cpu.

Implementations

impl ComputeDispatchTimer

pub fn new() -> Self

Create a new, unstopped timer.

pub fn start_cpu() -> Instant

Record the current instant as the start of a timed region.

Pass the returned Instant to stop_cpu when the region ends.

pub fn stop_cpu(start: Instant) -> Self

Stop the timer and return a ComputeDispatchTimer with elapsed time.

pub fn elapsed_ms(&self) -> Option<f64>

Return elapsed time in milliseconds, or None if the timer was never stopped.

pub fn elapsed_us(&self) -> Option<f64>

Return elapsed time in microseconds, or None if the timer was never stopped.

pub fn has_measurement(&self) -> bool

Return true if the timer has been stopped and holds a measurement.

Trait Implementations

impl Clone for ComputeDispatchTimer

fn clone(&self) -> ComputeDispatchTimer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ComputeDispatchTimer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ComputeDispatchTimer

fn default() -> ComputeDispatchTimer

Returns the “default value” for a type.