completion::io

Struct Copy

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pub struct Copy<'a, R, W>
where
    R: AsyncRead + ?Sized,
    W: AsyncWrite + ?Sized,
{ /* private fields */ }
Available on crate feature std only.
Expand description

Future for copy.

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impl<'a, R, W> CompletionFuture for Copy<'a, R, W>
where R: 'a + ?Sized + AsyncRead, W: 'a + ?Sized + AsyncWrite,

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type Output = Result<u64, Error>

The type of value produced on completion.
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unsafe fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
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unsafe fn poll_cancel(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()>

Attempt to cancel the future, registering the current task for wakeup if has not finished cancelling yet. Read more
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impl<'a, R, W> Future for Copy<'a, R, W>
where R: 'a + ?Sized + AsyncRead, W: 'a + ?Sized + AsyncWrite, <R as AsyncReadWith<'a>>::ReadFuture: Future<Output = Result<()>>, <W as AsyncWriteWith<'a>>::WriteFuture: Future<Output = Result<u64>>,

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type Output = Result<u64, Error>

The type of value produced on completion.
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
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impl<'__pin, 'a, R, W> Unpin for Copy<'a, R, W>
where PinnedFieldsOf<__Origin<'__pin, 'a, R, W>>: Unpin, R: AsyncRead + ?Sized, W: AsyncWrite + ?Sized,

Auto Trait Implementations§

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impl<'a, R, W> Freeze for Copy<'a, R, W>
where <R as AsyncReadWith<'a>>::ReadFuture: Freeze, <W as AsyncWriteWith<'a>>::WriteFuture: Freeze, R: ?Sized, W: ?Sized,

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impl<'a, R, W> RefUnwindSafe for Copy<'a, R, W>
where <R as AsyncReadWith<'a>>::ReadFuture: RefUnwindSafe, <W as AsyncWriteWith<'a>>::WriteFuture: RefUnwindSafe, R: RefUnwindSafe + ?Sized, W: RefUnwindSafe + ?Sized,

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impl<'a, R, W> Send for Copy<'a, R, W>
where <R as AsyncReadWith<'a>>::ReadFuture: Send, R: Send + ?Sized, W: Send + ?Sized, <W as AsyncWriteWith<'a>>::WriteFuture: Send,

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impl<'a, R, W> Sync for Copy<'a, R, W>
where <R as AsyncReadWith<'a>>::ReadFuture: Sync, R: Sync + ?Sized, W: Sync + ?Sized, <W as AsyncWriteWith<'a>>::WriteFuture: Sync,

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impl<'a, R, W> UnwindSafe for Copy<'a, R, W>
where <R as AsyncReadWith<'a>>::ReadFuture: UnwindSafe, R: RefUnwindSafe + ?Sized, W: RefUnwindSafe + ?Sized, <W as AsyncWriteWith<'a>>::WriteFuture: UnwindSafe,

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> CompletionFutureExt for T
where T: CompletionFuture + ?Sized,

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unsafe fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>
where Self: Unpin,

A convenience for calling CompletionFuture::poll on Unpin futures. Read more
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unsafe fn poll_cancel(&mut self, cx: &mut Context<'_>) -> Poll<()>
where Self: Unpin,

A convenience for calling CompletionFuture::poll_cancel on Unpin futures. Read more
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fn must_complete(self) -> MustComplete<Self>
where Self: Sized,

Make sure that the future will complete. Any requests to cancel the future through poll_cancel will be ignored.
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fn now_or_never(self) -> NowOrNever<Self> ⓘ
where Self: Sized,

Get the future’s output if it’s ready, or cancel it if it’s not. Read more
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fn catch_unwind(self) -> CatchUnwind<Self> ⓘ
where Self: Sized + UnwindSafe,

Available on crate feature std only.
Catch panics in the future. Read more
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fn boxed<'a>(self) -> BoxCompletionFuture<'a, Self::Output>
where Self: Sized + Send + 'a,

Available on crate feature alloc only.
Box the future, erasing its type. Read more
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fn boxed_local<'a>(self) -> LocalBoxCompletionFuture<'a, Self::Output>
where Self: Sized + 'a,

Available on crate feature alloc only.
Box the future locally, erasing its type. 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> FutureExt for T
where T: Future,

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fn into_completion(self) -> Adapter<Self> ⓘ

Convert this future into a CompletionFuture. Read more
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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<F> IntoFuture for F
where F: Future,

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type Output = <F as Future>::Output

The output that the future will produce on completion.
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type IntoFuture = F

Which kind of future are we turning this into?
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fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
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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<F, T, E> TryFuture for F
where F: Future<Output = Result<T, E>> + ?Sized,

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type Ok = T

The type of successful values yielded by this future
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type Error = E

The type of failures yielded by this future
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fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>, ) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more
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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.