34 lines
804 B
Rust
34 lines
804 B
Rust
use super::*;
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pub struct MutableFuture<O, T: Future<Output = O>> {
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inner: Arc<Mutex<Pin<Box<T>>>>,
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}
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impl<O, T: Future<Output = O>> MutableFuture<O, T> {
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pub fn new(inner: T) -> Self {
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Self {
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inner: Arc::new(Mutex::new(Box::pin(inner))),
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}
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}
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pub fn set(&self, inner: T) {
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*self.inner.lock() = Box::pin(inner);
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}
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}
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impl<O, T: Future<Output = O>> Clone for MutableFuture<O, T> {
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fn clone(&self) -> Self {
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Self {
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inner: self.inner.clone(),
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}
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}
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}
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impl<O, T: Future<Output = O>> Future for MutableFuture<O, T> {
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type Output = O;
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fn poll(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> task::Poll<Self::Output> {
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let mut inner = self.inner.lock();
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T::poll(inner.as_mut(), cx)
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}
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}
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