Struct Unparker 

pub struct Unparker { /* private fields */ }

Notifies a parker.

Implementations

impl Unparker

pub fn unpark(&self) -> bool

Notifies the associated parker.

Returns true if this call is the first to notify the parker, or false if the parker was already notified.

Examples

use std::thread;
use std::time::Duration;
use parking::Parker;

let p = Parker::new();
let u = p.unparker();

thread::spawn(move || {
    thread::sleep(Duration::from_millis(500));
    u.unpark();
});

// Wakes up when `u.unpark()` notifies and then goes back into unnotified state.
p.park();

pub fn will_unpark(&self, parker: &Parker) -> bool

Indicates whether this unparker will unpark the associated parker.

This can be used to avoid unnecessary work before calling unpark().

Examples

use parking::Parker;

let p = Parker::new();
let u = p.unparker();

assert!(u.will_unpark(&p));

pub fn same_parker(&self, other: &Unparker) -> bool

Indicates whether two unparkers will unpark the same parker.

Examples

use parking::Parker;

let p = Parker::new();
let u1 = p.unparker();
let u2 = p.unparker();

assert!(u1.same_parker(&u2));

Trait Implementations

impl Clone for Unparker

fn clone(&self) -> Unparker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Unparker

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

Formats the value using the given formatter.

impl From<Unparker> for Waker

fn from(up: Unparker) -> Self

Converts to this type from the input type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes