Sha256: 2a41533a5f7f113d19cd2bdafcc2abf86509109652274156efdd74abd00896b6
Contents?: true
Size: 1.42 KB
Versions: 20
Compression:
Stored size: 1.42 KB
Contents
use std::sync::mpsc;
use std::thread;
use std::time::Duration;
use crossbeam_utils::sync::WaitGroup;
const THREADS: usize = 10;
#[test]
fn wait() {
let wg = WaitGroup::new();
let (tx, rx) = mpsc::channel();
for _ in 0..THREADS {
let wg = wg.clone();
let tx = tx.clone();
thread::spawn(move || {
wg.wait();
tx.send(()).unwrap();
});
}
thread::sleep(Duration::from_millis(100));
// At this point, all spawned threads should be blocked, so we shouldn't get anything from the
// channel.
assert!(rx.try_recv().is_err());
wg.wait();
// Now, the wait group is cleared and we should receive messages.
for _ in 0..THREADS {
rx.recv().unwrap();
}
}
#[test]
fn wait_and_drop() {
let wg = WaitGroup::new();
let wg2 = WaitGroup::new();
let (tx, rx) = mpsc::channel();
for _ in 0..THREADS {
let wg = wg.clone();
let wg2 = wg2.clone();
let tx = tx.clone();
thread::spawn(move || {
wg2.wait();
tx.send(()).unwrap();
drop(wg);
});
}
// At this point, no thread has gotten past `wg2.wait()`, so we shouldn't get anything from the
// channel.
assert!(rx.try_recv().is_err());
drop(wg2);
wg.wait();
// Now, the wait group is cleared and we should receive messages.
for _ in 0..THREADS {
rx.try_recv().unwrap();
}
}
Version data entries
20 entries across 20 versions & 1 rubygems