Trait AsyncReadManaged 

pub trait AsyncReadManaged {
    type Buffer: IoBuf;

    // Required method
    async fn read_managed(&mut self, len: usize) -> Result<Option<Self::Buffer>>;
}

AsyncReadManaged

Async read with buffer pool

Required Associated Types

type Buffer: IoBuf

Filled buffer type

Required Methods

async fn read_managed(&mut self, len: usize) -> Result<Option<Self::Buffer>>

Read some bytes from this source and return a Self::Buffer.

Returning Ok(None) is similar to Ok(0) for normal AsyncRead.

Implementation Note

• If len == 0, implementation should use buffer’s size as len
• if len > 0, min(len, buffer_size) will be the max number of bytes to be read.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<A: AsyncReadManagedAt> AsyncReadManaged for Cursor<A>

type Buffer = <A as AsyncReadManagedAt>::Buffer

async fn read_managed(&mut self, len: usize) -> Result<Option<Self::Buffer>>

Implementors