Struct futures::channel::mpsc::UnboundedSender

[+] Show declaration

pub struct UnboundedSender<T>(_);

[−] Expand description

The transmission end of an unbounded mpsc channel.

This value is created by the unbounded function.

Methods

impl<T> UnboundedSender<T>

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pub fn poll_ready(&self, &mut Context) -> Poll<Result<(), SendError>>

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Check if the channel is ready to receive a message.

pub fn is_closed(&self) -> bool

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Returns whether this channel is closed without needing a context.

pub fn close_channel(&self)

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Closes this channel from the sender side, preventing any new messages.

pub fn start_send(&mut self, msg: T) -> Result<(), SendError>

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Send a message on the channel.

This method should only be called after poll_ready has been used to verify that the channel is ready to receive a message.

pub fn unbounded_send(&self, msg: T) -> Result<(), TrySendError<T>>

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Sends a message along this channel.

This is an unbounded sender, so this function differs from Sink::send by ensuring the return type reflects that the channel is always ready to receive messages.

Trait Implementations

impl<'a, T> Sink for &'a UnboundedSender<T>

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type SinkItem = T

The type of value that the sink accepts.

type SinkError = SendError

The type of value produced by the sink when an error occurs.

fn poll_ready(     self: PinMut<&'a UnboundedSender<T>>,     cx: &mut Context ) -> Poll<Result<(), <&'a UnboundedSender<T> as Sink>::SinkError>>

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Attempts to prepare the Sink to receive a value.

fn start_send(     self: PinMut<&'a UnboundedSender<T>>,     msg: T ) -> Result<(), <&'a UnboundedSender<T> as Sink>::SinkError>

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Begin the process of sending a value to the sink. Each call to this function must be proceeded by a successful call to poll_ready which returned Ok(Poll::Ready(())).

fn poll_flush(     self: PinMut<&'a UnboundedSender<T>>,     &mut Context ) -> Poll<Result<(), <&'a UnboundedSender<T> as Sink>::SinkError>>

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Flush any remaining output from this sink.

fn poll_close(     self: PinMut<&'a UnboundedSender<T>>,     &mut Context ) -> Poll<Result<(), <&'a UnboundedSender<T> as Sink>::SinkError>>

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Flush any remaining output and close this sink, if necessary.

impl<T> Sink for UnboundedSender<T>

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type SinkItem = T

The type of value that the sink accepts.

type SinkError = SendError

The type of value produced by the sink when an error occurs.

fn poll_ready(     self: PinMut<UnboundedSender<T>>,     cx: &mut Context ) -> Poll<Result<(), <UnboundedSender<T> as Sink>::SinkError>>

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Attempts to prepare the Sink to receive a value.

fn start_send(     self: PinMut<UnboundedSender<T>>,     msg: T ) -> Result<(), <UnboundedSender<T> as Sink>::SinkError>

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Begin the process of sending a value to the sink. Each call to this function must be proceeded by a successful call to poll_ready which returned Ok(Poll::Ready(())).

fn poll_flush(     self: PinMut<UnboundedSender<T>>,     &mut Context ) -> Poll<Result<(), <UnboundedSender<T> as Sink>::SinkError>>

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Flush any remaining output from this sink.

fn poll_close(     self: PinMut<UnboundedSender<T>>,     &mut Context ) -> Poll<Result<(), <UnboundedSender<T> as Sink>::SinkError>>

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Flush any remaining output and close this sink, if necessary.

impl<T> Debug for UnboundedSender<T> where     T: Debug,

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

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Formats the value using the given formatter.

impl<T> Clone for UnboundedSender<T>

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fn clone(&self) -> UnboundedSender<T>

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Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

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Performs copy-assignment from source.