Struct BufferPool 

pub struct BufferPool { /* private fields */ }

A pool of reusable byte buffers.

Each buffer starts at chunk_size bytes and grows as needed. When returned via give_back, the buffer is reset (length = 0) and made available for the next take() call.

Implementations

impl BufferPool

pub fn new(chunk_size: usize, max_idle: usize) -> Self

Create a new buffer pool.

• chunk_size — minimum capacity per buffer (default 4096).
• max_idle — max number of buffers to keep in the pool (default 64).

pub fn take(&self) -> Vec<u8>

Take a buffer from the pool, or allocate a fresh one.

The returned buffer has length 0 and capacity >= chunk_size.

pub fn take_sized(&self, min_capacity: usize) -> Vec<u8>

Take a buffer pre-sized to at least min_capacity.

pub fn give_back(&self, buf: Vec<u8>)

Return a buffer to the pool for reuse.

The buffer is cleared (length set to 0) but its allocation is kept.

pub fn warm(&self, count: usize)

Pre-allocate count buffers into the pool.

pub fn idle_count(&self) -> usize

Number of buffers currently idle in the pool.

Trait Implementations

impl Default for BufferPool

fn default() -> Self

Returns the “default value” for a type.