Struct ReadManaged 

pub struct ReadManaged<S>
where
    S: AsFd,
{ /* private fields */ }

A fused ReadManaged operation

Implementations

impl<S> ReadManaged<S>

where S: AsFd,

pub fn new( fd: S, pool: &BufferPool, len: usize, ) -> Result<ReadManaged<S>, Error>

Create a new ReadManaged.

Trait Implementations

impl<S> OpCode for ReadManaged<S>

where S: AsFd,

fn create_entry(self: Pin<&mut ReadManaged<S>>) -> OpEntry

Create submission entry.

fn call_blocking(self: Pin<&mut Self>) -> Result<usize, Error>

Call the operation in a blocking way. This method will only be called if create_entry returns OpEntry::Blocking.

unsafe fn set_result(self: Pin<&mut Self>, _: usize)

Set the result when it successfully completes. The operation stores the result and is responsible to release it if the operation is cancelled.

impl<S> OpCode for ReadManaged<S>

where S: AsFd,

fn pre_submit(self: Pin<&mut ReadManaged<S>>) -> Result<Decision, Error>

Perform the operation before submit, and return Decision to indicate whether submitting the operation to polling is required.

fn op_type(self: Pin<&mut ReadManaged<S>>) -> Option<OpType>

Get the operation type when an event is occurred.

fn operate(self: Pin<&mut ReadManaged<S>>) -> Poll<Result<usize, Error>>

Perform the operation after received corresponding event. If this operation is blocking, the return value should be Poll::Ready.

impl<S> TakeBuffer for ReadManaged<S>

where S: AsFd,

type BufferPool = BufferPool

Buffer pool type.

type Buffer<'a> = BorrowedBuffer<'a>

Selected buffer type. It keeps the reference to the buffer pool and returns the buffer back on drop.

fn take_buffer( self, buffer_pool: &<ReadManaged<S> as TakeBuffer>::BufferPool, result: Result<usize, Error>, buffer_id: u16, ) -> Result<<ReadManaged<S> as TakeBuffer>::Buffer<'_>, Error>

Take the selected buffer with buffer_pool, io result and buffer_id, if io operation is success.