Struct PlatformFrameSignal 

pub struct PlatformFrameSignal {}

Preserves the first platform frame request time across coalesced notifications.

Producers may record from a platform thread without waiting for the UI thread. The consumer drains the timestamp before dispatching the request on the UI thread. The timestamp offset and source share one atomic word so coalescing cannot mix a request’s time with another request’s source. The low bit encodes the source; the remaining bits encode nanoseconds from origin. u64::MAX is empty. Without the profiler feature, this accumulator has no timestamp storage.

Implementations

impl PlatformFrameSignal

pub fn new() -> Self

Creates an empty signal accumulator.

pub fn capture(capture: impl FnOnce() -> Instant) -> Option<Instant>

Captures a platform request timestamp only when profiling is enabled.

The closure is not invoked in profiler-disabled builds.

pub fn record(&self, at: Instant, source: FrameRequestSource)

Records a platform frame request, retaining the first undrained timestamp.

pub fn take(&self) -> Option<(Instant, FrameRequestSource)>

Drains the first platform frame request time and source, leaving the accumulator empty.

Trait Implementations

impl Default for PlatformFrameSignal

fn default() -> Self

Returns the “default value” for a type.