pub struct Dropped(_);
Expand description
A future that can be constructed from any impl DropWatch, that completes when the item is dropped.
Implementations§
Trait Implementations§
source§impl FusedFuture for Dropped
impl FusedFuture for Dropped
source§fn is_terminated(&self) -> bool
fn is_terminated(&self) -> bool
Returns
true
if the underlying future should no longer be polled.Auto Trait Implementations§
impl !RefUnwindSafe for Dropped
impl Send for Dropped
impl Sync for Dropped
impl Unpin for Dropped
impl !UnwindSafe for Dropped
Blanket Implementations§
§impl<T> Encode<Ambiguous1> for T
impl<T> Encode<Ambiguous1> for T
§impl<T> Encode<Ambiguous2> for T
impl<T> Encode<Ambiguous2> for T
§impl<T> FutureExt for Twhere
T: Future + ?Sized,
impl<T> FutureExt for Twhere T: Future + ?Sized,
§fn map<U, F>(self, f: F) -> Map<Self, F>where
F: FnOnce(Self::Output) -> U,
Self: Sized,
fn map<U, F>(self, f: F) -> Map<Self, F>where F: FnOnce(Self::Output) -> U, Self: Sized,
Map this future’s output to a different type, returning a new future of
the resulting type. Read more
§fn map_into<U>(self) -> MapInto<Self, U>where
Self::Output: Into<U>,
Self: Sized,
fn map_into<U>(self) -> MapInto<Self, U>where Self::Output: Into<U>, Self: Sized,
Map this future’s output to a different type, returning a new future of
the resulting type. Read more
§fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
Self: Sized,
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,
Chain on a computation for when a future finished, passing the result of
the future to the provided closure
f
. Read more§fn left_future<B>(self) -> Either<Self, B>where
B: Future<Output = Self::Output>,
Self: Sized,
fn left_future<B>(self) -> Either<Self, B>where B: Future<Output = Self::Output>, Self: Sized,
§fn right_future<A>(self) -> Either<A, Self>where
A: Future<Output = Self::Output>,
Self: Sized,
fn right_future<A>(self) -> Either<A, Self>where A: Future<Output = Self::Output>, Self: Sized,
§fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
fn into_stream(self) -> IntoStream<Self>where Self: Sized,
Convert this future into a single element stream. Read more
§fn flatten(self) -> Flatten<Self>where
Self::Output: Future,
Self: Sized,
fn flatten(self) -> Flatten<Self>where Self::Output: Future, Self: Sized,
Flatten the execution of this future when the output of this
future is itself another future. Read more
§fn flatten_stream(self) -> FlattenStream<Self>where
Self::Output: Stream,
Self: Sized,
fn flatten_stream(self) -> FlattenStream<Self>where Self::Output: Stream, Self: Sized,
Flatten the execution of this future when the successful result of this
future is a stream. Read more
§fn fuse(self) -> Fuse<Self>where
Self: Sized,
fn fuse(self) -> Fuse<Self>where Self: Sized,
Fuse a future such that
poll
will never again be called once it has
completed. This method can be used to turn any Future
into a
FusedFuture
. Read more§fn inspect<F>(self, f: F) -> Inspect<Self, F>where
F: FnOnce(&Self::Output),
Self: Sized,
fn inspect<F>(self, f: F) -> Inspect<Self, F>where F: FnOnce(&Self::Output), Self: Sized,
Do something with the output of a future before passing it on. Read more
§fn catch_unwind(self) -> CatchUnwind<Self>where
Self: Sized + UnwindSafe,
fn catch_unwind(self) -> CatchUnwind<Self>where Self: Sized + UnwindSafe,
Catches unwinding panics while polling the future. Read more
Create a cloneable handle to this future where all handles will resolve
to the same result. Read more
§fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where
Self: Sized,
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where Self: Sized,
Turn this future into a future that yields
()
on completion and sends
its output to another future on a separate task. Read more§fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where
Self: Sized + Send + 'a,
fn boxed<'a>( self ) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where Self: Sized + Send + 'a,
Wrap the future in a Box, pinning it. Read more
§fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>where
Self: Sized + 'a,
fn boxed_local<'a>( self ) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>where Self: Sized + 'a,
Wrap the future in a Box, pinning it. Read more
§fn unit_error(self) -> UnitError<Self>where
Self: Sized,
fn unit_error(self) -> UnitError<Self>where Self: Sized,
Turns a
Future<Output = T>
into a
TryFuture<Ok = T, Error = ()
>.§fn never_error(self) -> NeverError<Self>where
Self: Sized,
fn never_error(self) -> NeverError<Self>where Self: Sized,
Turns a
Future<Output = T>
into a
TryFuture<Ok = T, Error = Never
>.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<F> IntoFuture for Fwhere
F: Future,
impl<F> IntoFuture for Fwhere F: Future,
§type IntoFuture = F
type IntoFuture = F
Which kind of future are we turning this into?
source§fn into_future(self) -> <F as IntoFuture>::IntoFuture
fn into_future(self) -> <F as IntoFuture>::IntoFuture
Creates a future from a value. Read more
§impl<T> Pointable for T
impl<T> Pointable for T
§impl<F> TimeoutExt for Fwhere
F: Future,
impl<F> TimeoutExt for Fwhere F: Future,
§fn on_timeout<WT, OT>(self, time: WT, on_timeout: OT) -> OnTimeout<Self, OT>where
WT: WakeupTime,
OT: FnOnce() -> Self::Output,
fn on_timeout<WT, OT>(self, time: WT, on_timeout: OT) -> OnTimeout<Self, OT>where WT: WakeupTime, OT: FnOnce() -> Self::Output,
Wraps the future in a timeout, calling
on_timeout
to produce a result
when the timeout occurs.§fn on_stalled<OS>(
self,
timeout: Duration,
on_stalled: OS
) -> OnStalled<Self, OS>where
OS: FnOnce() -> Self::Output,
fn on_stalled<OS>( self, timeout: Duration, on_stalled: OS ) -> OnStalled<Self, OS>where OS: FnOnce() -> Self::Output,
Wraps the future in a stall-guard, calling
on_stalled
to produce a result
when the future hasn’t been otherwise polled within the timeout
.
This is a heuristic - spurious wakeups will keep the detection from triggering,
and moving all work to external tasks or threads with force the triggering early.