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

fn thread(&self) -> &Thread

Extracts a handle to the underlying thread.

Examples

use std::thread;

thread::scope(|s| {
    let t = s.spawn(|| {
        println!("hello");
    });
    println!("thread id: {:?}", t.thread().id());
});

fn join(self) -> Result<T>

Waits for the associated thread to finish.

This function will return immediately if the associated thread has already finished. Otherwise, it fully waits for the thread to finish, including all destructors for thread-local variables that might be running after the main function of the thread.

In terms of atomic memory orderings, the completion of the associated thread synchronizes with this function returning. In other words, all operations performed by that thread happen before all operations that happen after join returns.

If the associated thread panics, Err is returned with the panic payload.

Examples

use std::thread;

thread::scope(|s| {
    let t = s.spawn(|| {
        panic!("oh no");
    });
    assert!(t.join().is_err());
});

fn is_finished(&self) -> bool

Checks if the associated thread has finished running its main function.

is_finished supports implementing a non-blocking join operation, by checking is_finished, and calling join if it returns true. This function does not block. To block while waiting on the thread to finish, use [join][Self::join].

This might return true for a brief moment after the thread's main function has returned, but before the thread itself has stopped running. However, once this returns true, [join][Self::join] can be expected to return quickly, without blocking for any significant amount of time.