Struct BufferPool 

pub struct BufferPool { /* private fields */ }

A buffer pool.

This type by itself does nothing, and should only be used by *Managed ops.

Implementations

impl BufferPool

pub fn pop(&self) -> Result<BufferRef>

Pop an available buffer from the pool with given capacity.

This operation is not supported on io-uring driver and will always return Unsupported.

pub fn take(&self, buffer_id: u16) -> Result<Option<BufferRef>>

Take the indicated buffer from the pool.

Returns None if the buffer is not reset back yet or does not exist.

pub fn reset(&self, buffer_id: u16) -> Result<bool>

Reset the buffer_id so that it’s available for kernel to use, return whether a buffer has been reset.

This is the same as take(buffer_id) and immediately drop it.

pub fn is_io_uring(&self) -> Result<bool>

Available on fusion only.

Test if the buffer pool is an io_uring one.

Trait Implementations

impl Clone for BufferPool

fn clone(&self) -> BufferPool

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BufferPool

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

Formats the value using the given formatter.