Trait AsyncRead

pub trait AsyncRead {
    type Error: ReadError;

    // Required method
    fn poll_read_slice(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &mut [u8],
    ) -> Poll<Result<usize, Self::Error>>;
}

This trait is the asynchronous version of Read.

Required Associated Types

type Error: ReadError

Error type for IO operations involving the reader.

Required Methods

fn poll_read_slice( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<usize, Self::Error>>

Poll the reader once and read some bytes into the slice buf.

This method reads bytes directly into buf and reports how many bytes it read.

Implementations on Foreign Types

impl<T: AsyncRead + Unpin + ?Sized> AsyncRead for &mut T

type Error = <T as AsyncRead>::Error

fn poll_read_slice( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<usize, Self::Error>>

impl<T: AsyncRead + Unpin + ?Sized> AsyncRead for Box<T>

Available on crate feature alloc only.

type Error = <T as AsyncRead>::Error

fn poll_read_slice( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut [u8], ) -> Poll<Result<usize, Self::Error>>

Implementors

impl<B: Buf + Unpin> AsyncRead for Reader<B>

type Error = ReaderError

impl<T> AsyncRead for Futures<T>

where T: AsyncRead,

Available on crate feature futures only.

type Error = Error

impl<T> AsyncRead for NativeAsync<T>

where T: AsyncRead,

type Error = <T as AsyncRead>::Error

impl<T> AsyncRead for Smol<T>

where T: AsyncRead,

Available on crate feature smol only.

type Error = Error

impl<T> AsyncRead for Tokio<T>

where T: AsyncRead,

Available on crate feature tokio only.

type Error = Error