Struct futures::future::Shared [−][src]
Future for the shared method.
Implementations
impl<Fut> Shared<Fut> where
Fut: Future,
<Fut as Future>::Output: Clone, [src]
Fut: Future,
<Fut as Future>::Output: Clone,
pub fn peek(&self) -> Option<&<Fut as Future>::Output>[src]
Returns Some containing a reference to this Shared’s output if
it has already been computed by a clone or None if it hasn’t been
computed yet or this Shared already returned its output from
poll.
pub fn downgrade(&self) -> Option<WeakShared<Fut>>[src]
Creates a new WeakShared for this Shared.
Returns None if it has already been polled to completion.
pub fn strong_count(&self) -> Option<usize>[src]
Gets the number of strong pointers to this allocation.
Returns None if it has already been polled to completion.
Safety
This method by itself is safe, but using it correctly requires extra care. Another thread can change the strong count at any time, including potentially between calling this method and acting on the result.
pub fn weak_count(&self) -> Option<usize>[src]
Gets the number of weak pointers to this allocation.
Returns None if it has already been polled to completion.
Safety
This method by itself is safe, but using it correctly requires extra care. Another thread can change the weak count at any time, including potentially between calling this method and acting on the result.
Trait Implementations
impl<Fut> Clone for Shared<Fut> where
Fut: Future, [src]
Fut: Future,
impl<Fut> Debug for Shared<Fut> where
Fut: Future, [src]
Fut: Future,
impl<Fut> Drop for Shared<Fut> where
Fut: Future, [src]
Fut: Future,
impl<Fut> FusedFuture for Shared<Fut> where
Fut: Future,
<Fut as Future>::Output: Clone, [src]
Fut: Future,
<Fut as Future>::Output: Clone,
pub fn is_terminated(&self) -> bool[src]
impl<Fut> Future for Shared<Fut> where
Fut: Future,
<Fut as Future>::Output: Clone, [src]
Fut: Future,
<Fut as Future>::Output: Clone,
type Output = <Fut as Future>::Output
The type of value produced on completion.
pub fn poll(
self: Pin<&mut Shared<Fut>>,
cx: &mut Context<'_>
) -> Poll<<Shared<Fut> as Future>::Output>[src]
self: Pin<&mut Shared<Fut>>,
cx: &mut Context<'_>
) -> Poll<<Shared<Fut> as Future>::Output>
impl<Fut> Unpin for Shared<Fut> where
Fut: Future, [src]
Fut: Future,
Auto Trait Implementations
impl<Fut> !RefUnwindSafe for Shared<Fut>
impl<Fut> Send for Shared<Fut> where
Fut: Send,
<Fut as Future>::Output: Send + Sync,
Fut: Send,
<Fut as Future>::Output: Send + Sync,
impl<Fut> Sync for Shared<Fut> where
Fut: Send,
<Fut as Future>::Output: Send + Sync,
Fut: Send,
<Fut as Future>::Output: Send + Sync,
impl<Fut> !UnwindSafe for Shared<Fut>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut Tⓘ[src]
impl<T> From<T> for T[src]
impl<T> FutureExt for T where
T: Future + ?Sized, [src]
T: Future + ?Sized,
pub fn map<U, F>(self, f: F) -> Map<Self, F>ⓘ where
F: FnOnce(Self::Output) -> U, [src]
F: FnOnce(Self::Output) -> U,
pub fn map_into<U>(self) -> MapInto<Self, U>ⓘ where
Self::Output: Into<U>, [src]
Self::Output: Into<U>,
pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>ⓘ where
F: FnOnce(Self::Output) -> Fut,
Fut: Future, [src]
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
pub fn left_future<B>(self) -> Either<Self, B>ⓘ where
B: Future<Output = Self::Output>, [src]
B: Future<Output = Self::Output>,
pub fn right_future<A>(self) -> Either<A, Self>ⓘ where
A: Future<Output = Self::Output>, [src]
A: Future<Output = Self::Output>,
pub fn into_stream(self) -> IntoStream<Self>[src]
pub fn flatten(self) -> Flatten<Self>ⓘ where
Self::Output: Future, [src]
Self::Output: Future,
pub fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream, [src]
Self::Output: Stream,
pub fn fuse(self) -> Fuse<Self>ⓘ[src]
pub fn inspect<F>(self, f: F) -> Inspect<Self, F>ⓘ where
F: FnOnce(&Self::Output), [src]
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, [src]
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, [src]
Self::Output: Clone,
pub fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)[src]
pub fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a, [src]
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, [src]
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a,
pub fn unit_error(self) -> UnitError<Self>ⓘ[src]
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;[src]
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, [src]
Self: Unpin,
pub fn now_or_never(self) -> Option<Self::Output>[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<F> IntoFuture for F where
F: Future, [src]
F: Future,
type Output = <F as Future>::Output
🔬 This is a nightly-only experimental API. (
into_future)The output that the future will produce on completion.
type Future = F
🔬 This is a nightly-only experimental API. (
into_future)Which kind of future are we turning this into?
pub fn into_future(self) -> <F as IntoFuture>::Future[src]
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T[src]
pub fn clone_into(&self, target: &mut T)[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
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>[src]
impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized, [src]
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>[src]
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized, [src]
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, [src]
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, [src]
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, [src]
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, [src]
F: FnOnce(Self::Error) -> E,
pub fn err_into<E>(self) -> ErrInto<Self, E>ⓘ where
Self::Error: Into<E>, [src]
Self::Error: Into<E>,
pub fn ok_into<U>(self) -> OkInto<Self, U>ⓘ where
Self::Ok: Into<U>, [src]
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>, [src]
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>, [src]
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), [src]
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), [src]
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, [src]
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, [src]
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, [src]
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>;[src]
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, [src]
&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>, [src]
U: TryFrom<T>,