Struct BufferPool 

pub struct BufferPool { /* private fields */ }

Thread-safe pool of pre-allocated aligned buffers for io_uring fixed-buffer I/O.

Implementations

impl BufferPool

pub fn new( requested_buffers: usize, requested_chunk_size: usize, alignment: usize, ) -> Result<Self>

Create a shared buffer pool with cross-thread access.

pub fn new_local( requested_buffers: usize, requested_chunk_size: usize, alignment: usize, ) -> Result<Self>

Create a thread-local buffer pool (no cross-thread synchronization).

pub fn capacity(&self) -> usize

Returns the total number of buffers in the pool.

pub fn chunk_size(&self) -> usize

Returns the size in bytes of each buffer chunk.

pub fn alignment(&self) -> usize

Returns the memory alignment of each buffer in bytes.

pub fn get_ptr(&self, index: u16) -> Option<*mut u8>

Returns the raw pointer for the buffer at the given index.

pub fn get_len(&self, index: u16) -> usize

Returns the current data length of the buffer at the given index.

pub fn set_len(&self, index: u16, len: usize) -> Result<()>

Sets the data length of the buffer at the given index.

pub fn as_io_vecs(&mut self) -> Vec<iovec>

Build io_uring iovec descriptors from the pool’s buffers.

pub fn acquire(&self) -> Option<u16>

Acquires a free buffer index from the pool, returning None if exhausted.

pub fn release(&self, index: u16)

Returns a buffer to the pool, clearing its data length.

pub fn free_count(&self) -> usize

Returns the number of currently available buffers in the pool.

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.