Struct crossbeam::thread::ScopedJoinHandle

pub struct ScopedJoinHandle<'scope, T> { /* private fields */ }

A handle that can be used to join its scoped thread.

Implementations

impl<'scope, T> ScopedJoinHandle<'scope, T>

pub fn join(self) -> Result<T, Box<dyn Any + Send + 'static, Global>>

Waits for the thread to finish and returns its result.

If the child thread panics, an error is returned.

Panics

This function may panic on some platforms if a thread attempts to join itself or otherwise may create a deadlock with joining threads.

Examples

use crossbeam_utils::thread;

thread::scope(|s| {
    let handle1 = s.spawn(|_| println!("I'm a happy thread :)"));
    let handle2 = s.spawn(|_| panic!("I'm a sad thread :("));

    // Join the first thread and verify that it succeeded.
    let res = handle1.join();
    assert!(res.is_ok());

    // Join the second thread and verify that it panicked.
    let res = handle2.join();
    assert!(res.is_err());
}).unwrap();

pub fn thread(&self) -> &Thread

Returns a handle to the underlying thread.

Examples

use crossbeam_utils::thread;

thread::scope(|s| {
    let handle = s.spawn(|_| println!("A child thread is running"));
    println!("The child thread ID: {:?}", handle.thread().id());
}).unwrap();

Trait Implementations

impl<'scope, T> Debug for ScopedJoinHandle<'scope, T>

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

Formats the value using the given formatter.

impl<'scope, T> Send for ScopedJoinHandle<'scope, T>

impl<'scope, T> Sync for ScopedJoinHandle<'scope, T>