Struct futures::future::RemoteHandle [−][src]
The handle to a remote future returned by
remote_handle
. When you drop this,
the remote future will be woken up to be dropped by the executor.
Unwind safety
When the remote future panics, Remote will catch the unwind and transfer it to
the thread where RemoteHandle
is being awaited. This is good for the common
case where Remote is spawned on a threadpool. It is unlikely that other code
in the executor working thread shares mutable data with the spawned future and we
preserve the executor from losing its working threads.
If you run the future locally and send the handle of to be awaited elsewhere, you must be careful with regard to unwind safety because the thread in which the future is polled will keep running after the panic and the thread running the RemoteHandle will unwind.
Implementations
impl<T> RemoteHandle<T>
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pub fn forget(self)
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Drops this handle without canceling the underlying future.
This method can be used if you want to drop the handle, but let the execution continue.
Trait Implementations
impl<T> Debug for RemoteHandle<T> where
T: Debug,
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T: Debug,
impl<T> Future for RemoteHandle<T> where
T: 'static,
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T: 'static,
Auto Trait Implementations
impl<T> !RefUnwindSafe for RemoteHandle<T>
impl<T> Send for RemoteHandle<T> where
T: Send,
T: Send,
impl<T> Sync for RemoteHandle<T> where
T: Send,
T: Send,
impl<T> Unpin for RemoteHandle<T>
impl<T> !UnwindSafe for RemoteHandle<T>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut Tⓘ
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impl<T> From<T> for T
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impl<T> FutureExt for T where
T: Future + ?Sized,
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T: Future + ?Sized,
pub fn map<U, F>(self, f: F) -> Map<Self, F>ⓘ where
F: FnOnce(Self::Output) -> U,
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F: FnOnce(Self::Output) -> U,
pub fn map_into<U>(self) -> MapInto<Self, U>ⓘ where
Self::Output: Into<U>,
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Self::Output: Into<U>,
pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>ⓘ where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
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F: FnOnce(Self::Output) -> Fut,
Fut: Future,
pub fn left_future<B>(self) -> Either<Self, B>ⓘ where
B: Future<Output = Self::Output>,
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B: Future<Output = Self::Output>,
pub fn right_future<A>(self) -> Either<A, Self>ⓘ where
A: Future<Output = Self::Output>,
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A: Future<Output = Self::Output>,
pub fn into_stream(self) -> IntoStream<Self>
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pub fn flatten(self) -> Flatten<Self>ⓘ where
Self::Output: Future,
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Self::Output: Future,
pub fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
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Self::Output: Stream,
pub fn fuse(self) -> Fuse<Self>ⓘ
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pub fn inspect<F>(self, f: F) -> Inspect<Self, F>ⓘ where
F: FnOnce(&Self::Output),
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F: FnOnce(&Self::Output),
pub fn catch_unwind(self) -> CatchUnwind<Self>ⓘNotable traits for CatchUnwind<Fut>
impl<Fut> Future for CatchUnwind<Fut> where
Fut: Future + UnwindSafe, type Output = Result<<Fut as Future>::Output, Box<dyn Any + 'static + Send, Global>>;
where
Self: UnwindSafe,
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Notable traits for CatchUnwind<Fut>
impl<Fut> Future for CatchUnwind<Fut> where
Fut: Future + UnwindSafe, type Output = Result<<Fut as Future>::Output, Box<dyn Any + 'static + Send, Global>>;
Self: UnwindSafe,
pub fn shared(self) -> Shared<Self>ⓘ where
Self::Output: Clone,
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Self::Output: Clone,
pub fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
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pub fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
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self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
pub fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a,
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self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a,
pub fn unit_error(self) -> UnitError<Self>ⓘ
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pub fn never_error(self) -> NeverError<Self>ⓘNotable traits for NeverError<Fut>
impl<Fut> Future for NeverError<Fut> where
Map<Fut, OkFn<Infallible>>: Future, type Output = <Map<Fut, OkFn<Infallible>> as Future>::Output;
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Notable traits for NeverError<Fut>
impl<Fut> Future for NeverError<Fut> where
Map<Fut, OkFn<Infallible>>: Future, type Output = <Map<Fut, OkFn<Infallible>> as Future>::Output;
pub fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
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Self: Unpin,
pub fn now_or_never(self) -> Option<Self::Output>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<F> IntoFuture for F where
F: Future,
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F: Future,
type Output = <F as Future>::Output
into_future
)The output that the future will produce on completion.
type Future = F
into_future
)Which kind of future are we turning this into?
pub fn into_future(self) -> <F as IntoFuture>::Future
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,
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F: Future<Output = Result<T, E>> + ?Sized,
type Ok = T
The type of successful values yielded by this future
type Error = E
The type of failures yielded by this future
pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
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self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,
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Fut: TryFuture + ?Sized,
pub fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
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Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
pub fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>ⓘ where
F: FnOnce(Self::Ok) -> T,
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F: FnOnce(Self::Ok) -> T,
pub fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E>ⓘNotable traits for MapOkOrElse<Fut, F, G>
impl<Fut, F, G> Future for MapOkOrElse<Fut, F, G> where
Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>>: Future, type Output = <Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>> as Future>::Output;
where
E: FnOnce(Self::Error) -> T,
F: FnOnce(Self::Ok) -> T,
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Notable traits for MapOkOrElse<Fut, F, G>
impl<Fut, F, G> Future for MapOkOrElse<Fut, F, G> where
Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>>: Future, type Output = <Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>> as Future>::Output;
E: FnOnce(Self::Error) -> T,
F: FnOnce(Self::Ok) -> T,
pub fn map_err<E, F>(self, f: F) -> MapErr<Self, F>ⓘ where
F: FnOnce(Self::Error) -> E,
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F: FnOnce(Self::Error) -> E,
pub fn err_into<E>(self) -> ErrInto<Self, E>ⓘ where
Self::Error: Into<E>,
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Self::Error: Into<E>,
pub fn ok_into<U>(self) -> OkInto<Self, U>ⓘ where
Self::Ok: Into<U>,
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Self::Ok: Into<U>,
pub fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>ⓘ where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
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F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
pub fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>ⓘ where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
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F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
pub fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>ⓘ where
F: FnOnce(&Self::Ok),
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F: FnOnce(&Self::Ok),
pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>ⓘNotable traits for InspectErr<Fut, F>
impl<Fut, F> Future for InspectErr<Fut, F> where
Inspect<IntoFuture<Fut>, InspectErrFn<F>>: Future, type Output = <Inspect<IntoFuture<Fut>, InspectErrFn<F>> as Future>::Output;
where
F: FnOnce(&Self::Error),
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Notable traits for InspectErr<Fut, F>
impl<Fut, F> Future for InspectErr<Fut, F> where
Inspect<IntoFuture<Fut>, InspectErrFn<F>>: Future, type Output = <Inspect<IntoFuture<Fut>, InspectErrFn<F>> as Future>::Output;
F: FnOnce(&Self::Error),
pub fn try_flatten(self) -> TryFlatten<Self, Self::Ok>ⓘNotable traits for TryFlatten<Fut1, Fut2>
impl<Fut1, Fut2> Future for TryFlatten<Fut1, Fut2> where
TryFlatten<Fut1, Fut2>: Future, type Output = <TryFlatten<Fut1, Fut2> as Future>::Output;
where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
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Notable traits for TryFlatten<Fut1, Fut2>
impl<Fut1, Fut2> Future for TryFlatten<Fut1, Fut2> where
TryFlatten<Fut1, Fut2>: Future, type Output = <TryFlatten<Fut1, Fut2> as Future>::Output;
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
pub fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
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Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
pub fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F>ⓘNotable traits for UnwrapOrElse<Fut, F>
impl<Fut, F> Future for UnwrapOrElse<Fut, F> where
Map<IntoFuture<Fut>, UnwrapOrElseFn<F>>: Future, type Output = <Map<IntoFuture<Fut>, UnwrapOrElseFn<F>> as Future>::Output;
where
F: FnOnce(Self::Error) -> Self::Ok,
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Notable traits for UnwrapOrElse<Fut, F>
impl<Fut, F> Future for UnwrapOrElse<Fut, F> where
Map<IntoFuture<Fut>, UnwrapOrElseFn<F>>: Future, type Output = <Map<IntoFuture<Fut>, UnwrapOrElseFn<F>> as Future>::Output;
F: FnOnce(Self::Error) -> Self::Ok,
pub fn into_future(self) -> IntoFuture<Self>ⓘNotable traits for IntoFuture<Fut>
impl<Fut> Future for IntoFuture<Fut> where
Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;
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Notable traits for IntoFuture<Fut>
impl<Fut> Future for IntoFuture<Fut> where
Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;
pub fn try_poll_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,