Struct Signal 

pub struct Signal<T> { /* private fields */ }

A one-value hand-off between a worker and a future.

The worker calls Signal::set; whoever awaits Signal::wait is woken with it. A worker that dies without setting anything closes the signal, and the wait resolves to None rather than hanging for ever.

Implementations

impl<T> Signal<T>

pub fn new() -> Self

pub fn set(&self, value: T)

Delivers the value and wakes the waiter. A second call is ignored: one signal carries one value.

pub fn close(&self)

Ends the signal with no value, so a waiter stops waiting.

pub fn wait(&self) -> SignalWait<T>

Resolves with the value, or None when the signal was closed empty.

Trait Implementations

impl<T> Clone for Signal<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Default for Signal<T>

fn default() -> Self

Returns the “default value” for a type.