Struct Unparker

pub struct Unparker { /* private fields */ }

Unparks a thread parked by the associated Parker.

Implementations

impl Unparker

pub fn unpark(&self)

Atomically makes the token available if it is not already.

This method will wake up the thread blocked on park or park_timeout, if there is any.

Examples

use std::thread;
use std::time::Duration;
use crossbeam_utils::sync::Parker;

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

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

// Wakes up when `u.unpark()` provides the token.
p.park();

pub fn into_raw(this: Unparker) -> *const ()

Converts an Unparker into a raw pointer.

Examples

use crossbeam_utils::sync::{Parker, Unparker};

let p = Parker::new();
let u = p.unparker().clone();
let raw = Unparker::into_raw(u);

pub unsafe fn from_raw(ptr: *const ()) -> Unparker

Converts a raw pointer into an Unparker.

Safety

This method is safe to use only with pointers returned by Unparker::into_raw.

Examples

use crossbeam_utils::sync::{Parker, Unparker};

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

let raw = Unparker::into_raw(u);
let u = unsafe { Unparker::from_raw(raw) };

Trait Implementations

impl Clone for Unparker

fn clone(&self) -> Unparker

Returns a copy 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<(), Error>

Formats the value using the given formatter.

impl Send for Unparker

impl Sync for Unparker

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