Struct holochain::prelude::dependencies::kitsune_p2p_types::dependencies::futures::channel::oneshot::Receiver
pub struct Receiver<T> { /* private fields */ }
Expand description
A future for a value that will be provided by another asynchronous task.
This is created by the channel
function.
Implementations
impl<T> Receiver<T>
impl<T> Receiver<T>
pub fn close(&mut self)
pub fn close(&mut self)
Gracefully close this receiver, preventing any subsequent attempts to send to it.
Any send
operation which happens after this method returns is
guaranteed to fail. After calling this method, you can use
Receiver::poll
to determine whether a
message had previously been sent.
pub fn try_recv(&mut self) -> Result<Option<T>, Canceled>
pub fn try_recv(&mut self) -> Result<Option<T>, Canceled>
Attempts to receive a message outside of the context of a task.
Does not schedule a task wakeup or have any other side effects.
A return value of None
must be considered immediately stale (out of
date) unless close
has been called first.
Returns an error if the sender was dropped.
Trait Implementations
impl<T> FusedFuture for Receiver<T>
impl<T> FusedFuture for Receiver<T>
fn is_terminated(&self) -> bool
fn is_terminated(&self) -> bool
Returns
true
if the underlying future should no longer be polled.impl<T> Unpin for Receiver<T>
Auto Trait Implementations
impl<T> !RefUnwindSafe for Receiver<T>
impl<T> Send for Receiver<T>where
T: Send,
impl<T> Sync for Receiver<T>where
T: Send,
impl<T> !UnwindSafe for Receiver<T>
Blanket Implementations
impl<T> Any for Twhere
T: Any + ?Sized,
impl<T> Any for Twhere
T: Any + ?Sized,
fn type_id_compat(&self) -> TypeId
fn type_id_compat(&self) -> TypeId
TODO: once 1.33.0 is the minimum supported compiler version, remove
Any::type_id_compat and use StdAny::type_id instead.
https://github.com/rust-lang/rust/issues/27745 Read more
impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
Deserializes using the given deserializer
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 morefn 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 morefn 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 morefn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where
Self: 'a + Sized + Send,
fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where
Self: 'a + Sized + Send,
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: 'a + Sized,
fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>where
Self: 'a + Sized,
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,
fn never_error(self) -> NeverError<Self> ⓘwhere
Self: Sized,
fn never_error(self) -> NeverError<Self> ⓘwhere
Self: Sized,
fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>where
Self: Unpin,
fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>where
Self: Unpin,
A convenience for calling
Future::poll
on Unpin
future types.fn now_or_never(self) -> Option<Self::Output>where
Self: Sized,
fn now_or_never(self) -> Option<Self::Output>where
Self: Sized,
Evaluates and consumes the future, returning the resulting output if
the future is ready after the first call to
Future::poll
. Read moreimpl<T> FutureExt for T
impl<T> FutureExt for T
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_context(self, otel_cx: Context) -> WithContext<Self> ⓘ
fn with_current_context(self) -> WithContext<Self> ⓘ
fn with_current_context(self) -> WithContext<Self> ⓘ
impl<T> FutureExt for Twhere
T: Future + ?Sized,
impl<T> FutureExt for Twhere
T: Future + ?Sized,
fn delay(self, dur: Duration) -> DelayFuture<Self>where
Self: Sized,
fn delay(self, dur: Duration) -> DelayFuture<Self>where
Self: Sized,
Returns a Future that delays execution for a specified time. Read more
fn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future>where
Self: Sized,
Self::Output: IntoFuture,
fn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future>where
Self: Sized,
Self::Output: IntoFuture,
Flatten out the execution of this future when the result itself
can be converted into another future. Read more
fn race<F>(self, other: F) -> Race<Self, F>where
Self: Future + Sized,
F: Future<Output = Self::Output>,
fn race<F>(self, other: F) -> Race<Self, F>where
Self: Future + Sized,
F: Future<Output = Self::Output>,
Waits for one of two similarly-typed futures to complete. Read more
fn try_race<F, T, E>(self, other: F) -> TryRace<Self, F>where
Self: Future<Output = Result<T, E>> + Sized,
F: Future<Output = Self::Output>,
fn try_race<F, T, E>(self, other: F) -> TryRace<Self, F>where
Self: Future<Output = Result<T, E>> + Sized,
F: Future<Output = Self::Output>,
Waits for one of two similarly-typed fallible futures to complete. Read more
fn join<F>(self, other: F) -> Join<Self, F>where
Self: Future + Sized,
F: Future,
fn join<F>(self, other: F) -> Join<Self, F>where
Self: Future + Sized,
F: Future,
Waits for two similarly-typed futures to complete. Read more
impl<F> FutureExt for Fwhere
F: Future + ?Sized,
impl<F> FutureExt for Fwhere
F: Future + ?Sized,
fn catch_unwind(self) -> CatchUnwind<Self> ⓘwhere
Self: Sized + UnwindSafe,
fn catch_unwind(self) -> CatchUnwind<Self> ⓘwhere
Self: Sized + UnwindSafe,
Catches panics while polling the future. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
sourcefn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
sourcefn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
sourceimpl<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?
sourcefn 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> IntoFuture for Twhere
T: Future,
impl<T> IntoFuture for Twhere
T: Future,
type Future = T
type Future = T
Which kind of future are we turning this into?
fn into_future(self) -> <T as IntoFuture>::Future
fn into_future(self) -> <T as IntoFuture>::Future
Create a future from a value
sourceimpl<T> IntoMustBoxFuture for Twhere
T: Future + ?Sized,
impl<T> IntoMustBoxFuture for Twhere
T: Future + ?Sized,
impl<T> Pointable for T
impl<T> Pointable for T
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct
self
from the equivalent element of its
superset. Read morefn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
Checks if
self
is actually part of its subset T
(and can be converted to it).fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
Use with care! Same as
self.to_subset
but without any property checks. Always succeeds.fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
The inclusion map: converts
self
to the equivalent element of its superset.impl<Fut> TryFutureExt for Futwhere
Fut: TryFuture + ?Sized,
impl<Fut> TryFutureExt for Futwhere
Fut: TryFuture + ?Sized,
fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok>where
Self::Ok: Sink<Item, Error = Self::Error>,
Self: Sized,
fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok>where
Self::Ok: Sink<Item, Error = Self::Error>,
Self: Sized,
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> ⓘwhere
F: FnOnce(Self::Ok) -> T,
Self: Sized,
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> ⓘwhere
F: FnOnce(Self::Ok) -> T,
Self: Sized,
Maps this future’s success value to a different value. Read more
fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> ⓘwhere
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,
Self: Sized,
fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> ⓘwhere
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,
Self: Sized,
Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> ⓘwhere
F: FnOnce(Self::Error) -> E,
Self: Sized,
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> ⓘwhere
F: FnOnce(Self::Error) -> E,
Self: Sized,
Maps this future’s error value to a different value. Read more
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> ⓘwhere
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
Self: Sized,
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> ⓘwhere
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
Self: Sized,
Executes another future after this one resolves successfully. The
success value is passed to a closure to create this subsequent future. Read more
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> ⓘwhere
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
Self: Sized,
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> ⓘwhere
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
Self: Sized,
Executes another future if this one resolves to an error. The
error value is passed to a closure to create this subsequent future. Read more
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> ⓘwhere
F: FnOnce(&Self::Ok),
Self: Sized,
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> ⓘwhere
F: FnOnce(&Self::Ok),
Self: Sized,
Do something with the success value of a future before passing it on. Read more
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> ⓘwhere
F: FnOnce(&Self::Error),
Self: Sized,
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> ⓘwhere
F: FnOnce(&Self::Error),
Self: Sized,
Do something with the error value of a future before passing it on. Read more
fn try_flatten(self) -> TryFlatten<Self, Self::Ok> ⓘwhere
Self::Ok: TryFuture<Error = Self::Error>,
Self: Sized,
fn try_flatten(self) -> TryFlatten<Self, Self::Ok> ⓘwhere
Self::Ok: TryFuture<Error = Self::Error>,
Self: Sized,
Flatten the execution of this future when the successful result of this
future is another future. Read more
fn try_flatten_stream(self) -> TryFlattenStream<Self>where
Self::Ok: TryStream<Error = Self::Error>,
Self: Sized,
fn try_flatten_stream(self) -> TryFlattenStream<Self>where
Self::Ok: TryStream<Error = Self::Error>,
Self: Sized,
Flatten the execution of this future when the successful result of this
future is a stream. Read more
fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> ⓘwhere
Self: Sized,
F: FnOnce(Self::Error) -> Self::Ok,
fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> ⓘwhere
Self: Sized,
F: FnOnce(Self::Error) -> Self::Ok,
fn into_future(self) -> IntoFuture<Self> ⓘwhere
Self: Sized,
fn into_future(self) -> IntoFuture<Self> ⓘwhere
Self: Sized,
impl<T> Upcastable for Twhere
T: 'static + Any + Send + Sync,
impl<T> Upcastable for Twhere
T: 'static + Any + Send + Sync,
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
upcast ref
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
upcast mut ref