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21 lines
458 B
Rust
21 lines
458 B
Rust
//@ edition: 2021
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#![feature(async_closure, noop_waker)]
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use std::future::Future;
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use std::pin::pin;
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use std::task::*;
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pub fn block_on<T>(fut: impl Future<Output = T>) -> T {
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let mut fut = pin!(fut);
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// Poll loop, just to test the future...
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let ctx = &mut Context::from_waker(Waker::noop());
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loop {
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match unsafe { fut.as_mut().poll(ctx) } {
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Poll::Pending => {}
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Poll::Ready(t) => break t,
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}
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}
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}
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