Struct Waker 

pub struct Waker(/* private fields */);

A handle into the event loop that any thread may hold; Waker::wake asks for a frame from wherever the app’s data arrived. Cheap to clone, and harmless after the loop has ended (a wake nobody hears is dropped). An app gets one in App::setup, a host from PumpRunner::waker.

Implementations

impl Waker

pub fn wake(&self)

Asks every window for a frame: the loop wakes, view runs and the frame is drawn. Safe from any thread and at any rate, since wakes coalesce into the loop’s next turn rather than queueing frames.

pub fn wake_at(&self, at: Instant)

Asks every window for a frame at at (backlog F135): the loop sleeps until then and view runs, with no thread waiting for it. The earliest time asked for wins; one already past is a wake now. From the view itself Ui::request_frame_at, on the frame clock, says the same thing without a Waker.

Trait Implementations

impl Clone for Waker

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Waker

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

Formats the value using the given formatter.