tokio_sync::watch

Struct Sender

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pub struct Sender<T> { /* private fields */ }
Expand description

Sends values to the associated Receiver.

Instances are created by the channel function.

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impl<T> Sender<T>

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pub fn broadcast(&mut self, value: T) -> Result<(), SendError<T>>

Broadcast a new value via the channel, notifying all receivers.

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pub fn poll_close(&mut self) -> Poll<(), ()>

Returns Ready when all receivers have dropped.

This allows the producer to get notified when interest in the produced values is canceled and immediately stop doing work.

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impl<T: Debug> Debug for Sender<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T> Drop for Sender<T>

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<T> Sink for Sender<T>

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type SinkItem = T

The type of value that the sink accepts.
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type SinkError = SendError<T>

The type of value produced by the sink when an error occurs.
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fn start_send(&mut self, item: T) -> StartSend<T, SendError<T>>

Begin the process of sending a value to the sink. Read more
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fn poll_complete(&mut self) -> Poll<(), SendError<T>>

Flush all output from this sink, if necessary. Read more
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fn close(&mut self) -> Result<Async<()>, Self::SinkError>

A method to indicate that no more values will ever be pushed into this sink. Read more
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fn wait(self) -> Wait<Self>
where Self: Sized,

Creates a new object which will produce a synchronous sink. Read more
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fn with<U, F, Fut>(self, f: F) -> With<Self, U, F, Fut>
where F: FnMut(U) -> Fut, Fut: IntoFuture<Item = Self::SinkItem>, <Fut as IntoFuture>::Error: From<Self::SinkError>, Self: Sized,

Composes a function in front of the sink. Read more
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fn with_flat_map<U, F, St>(self, f: F) -> WithFlatMap<Self, U, F, St>
where F: FnMut(U) -> St, St: Stream<Item = Self::SinkItem, Error = Self::SinkError>, Self: Sized,

Composes a function in front of the sink. Read more
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fn sink_map_err<F, E>(self, f: F) -> SinkMapErr<Self, F>
where F: FnOnce(Self::SinkError) -> E, Self: Sized,

Transforms the error returned by the sink.
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fn sink_from_err<E>(self) -> SinkFromErr<Self, E>
where E: From<Self::SinkError>, Self: Sized,

Map this sink’s error to any error implementing From for this sink’s Error, returning a new sink. Read more
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fn buffer(self, amt: usize) -> Buffer<Self>
where Self: Sized,

Adds a fixed-size buffer to the current sink. Read more
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fn fanout<S>(self, other: S) -> Fanout<Self, S>
where Self: Sized, Self::SinkItem: Clone, S: Sink<SinkItem = Self::SinkItem, SinkError = Self::SinkError>,

Fanout items to multiple sinks. Read more
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fn flush(self) -> Flush<Self>
where Self: Sized,

A future that completes when the sink has finished processing all pending requests. Read more
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fn send(self, item: Self::SinkItem) -> Send<Self>
where Self: Sized,

A future that completes after the given item has been fully processed into the sink, including flushing. Read more
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fn send_all<S>(self, stream: S) -> SendAll<Self, S>
where S: Stream<Item = Self::SinkItem>, Self::SinkError: From<<S as Stream>::Error>, Self: Sized,

A future that completes after the given stream has been fully processed into the sink, including flushing. Read more

Auto Trait Implementations§

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impl<T> Freeze for Sender<T>

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impl<T> !RefUnwindSafe for Sender<T>

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impl<T> Send for Sender<T>
where T: Send + Sync,

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impl<T> Sync for Sender<T>
where T: Send + Sync,

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impl<T> Unpin for Sender<T>

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impl<T> !UnwindSafe for Sender<T>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.