Struct BumpArena 

pub struct BumpArena { /* private fields */ }

A simple bump allocator for byte-slice entries.

Allocations are cheap (pointer-bump only). Deallocation is not supported per-entry; call reset to reclaim the whole arena at once (typically called after a batch eviction sweep).

Implementations

impl BumpArena

pub fn new(initial_capacity: usize) -> Self

Create a new BumpArena with initial_capacity bytes pre-allocated.

pub fn alloc(&mut self, bytes: &[u8]) -> (usize, usize)

Append bytes to the arena and return (offset, len).

Grows the backing vec if necessary.

pub fn get(&self, offset: usize, len: usize) -> &[u8]

Retrieve a byte slice stored at (offset, len).

pub fn reset(&mut self)

Reset the arena, reclaiming all memory for future allocations.

Existing (offset, len) handles become invalid after this call.

pub fn used(&self) -> usize

Current number of bytes used.

Trait Implementations

impl Clone for BumpArena

fn clone(&self) -> BumpArena

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BumpArena

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

Formats the value using the given formatter.