26 lines
608 B
Rust
26 lines
608 B
Rust
use core::future::Future;
|
|
use core::pin::Pin;
|
|
use core::task::{Context, Poll};
|
|
|
|
/// Yield from the current task once, allowing other tasks to run.
|
|
pub fn yield_now() -> impl Future<Output = ()> {
|
|
YieldNowFuture { yielded: false }
|
|
}
|
|
|
|
struct YieldNowFuture {
|
|
yielded: bool,
|
|
}
|
|
|
|
impl Future for YieldNowFuture {
|
|
type Output = ();
|
|
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
|
|
if self.yielded {
|
|
Poll::Ready(())
|
|
} else {
|
|
self.yielded = true;
|
|
cx.waker().wake_by_ref();
|
|
Poll::Pending
|
|
}
|
|
}
|
|
}
|