Struct ArenaStore 

pub struct ArenaStore {
    pub arena: FrameArena,
    /* private fields */
}

Arena-backed object store. Combines FrameArena with a typed entry list for objects that need to be accessed by index.

Fields

arena: FrameArena

The underlying bump arena (tracks memory pages).

Implementations

impl ArenaStore

pub fn new() -> Self

pub fn alloc<T: Any + 'static>(&mut self, value: T) -> usize

Allocate a new entry in the arena store.

pub fn get<T: Any + 'static>(&self, index: usize) -> Option<&T>

Get a reference to the stored value at the given index.

pub fn live_count(&self) -> usize

Number of live entries.

pub fn reset(&mut self)

Reset the store — mark all entries as free, reset the arena.

Trait Implementations

impl Default for ArenaStore

fn default() -> Self

Returns the “default value” for a type.