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use crate::loom::sync::Arc;
use crate::sync::oneshot;
use std::time::Duration;
#[derive(Debug, Clone)]
pub(super) struct Sender {
tx: Arc<oneshot::Sender<()>>,
}
#[derive(Debug)]
pub(super) struct Receiver {
rx: oneshot::Receiver<()>,
}
pub(super) fn channel() -> (Sender, Receiver) {
let (tx, rx) = oneshot::channel();
let tx = Sender { tx: Arc::new(tx) };
let rx = Receiver { rx };
(tx, rx)
}
impl Receiver {
pub(crate) fn wait(&mut self, timeout: Option<Duration>) {
use crate::runtime::enter::{enter, try_enter};
let mut e = if std::thread::panicking() {
match try_enter(false) {
Some(enter) => enter,
_ => return,
}
} else {
enter(false)
};
if let Some(timeout) = timeout {
let _ = e.block_on_timeout(&mut self.rx, timeout);
} else {
let _ = e.block_on(&mut self.rx);
}
}
}