Struct PoolArena 

pub struct PoolArena { /* private fields */ }

A fixed-size object pool backed by a free-list.

Implementations

impl PoolArena

pub fn new(slot_size: usize, capacity: usize) -> Self

Creates a pool that holds capacity objects of slot_size bytes each.

pub fn alloc_slot(&mut self) -> Option<usize>

Allocates one slot. Returns the slot index or None if exhausted.

pub fn free_slot(&mut self, idx: usize)

Frees a slot by returning it to the free list.

pub fn available(&self) -> usize

Returns the number of available (free) slots.

pub fn capacity(&self) -> usize

Returns the total pool capacity in slots.

pub fn slot_size(&self) -> usize

Returns the slot size in bytes.