Module arena 

Per-frame bump arena allocation.

Provides FrameArena, a thin wrapper around bumpalo::Bump for per-frame temporary allocations. The arena is reset at frame boundaries, eliminating allocator churn on the hot render path.

Usage

use ftui_render::arena::FrameArena;

let mut arena = FrameArena::new(256 * 1024); // 256 KB initial capacity
let s = arena.alloc_str("hello");
assert_eq!(s, "hello");

let slice = arena.alloc_slice(&[1u32, 2, 3]);
assert_eq!(slice, &[1, 2, 3]);

arena.reset(); // O(1) — reclaims all memory for reuse

Safety

This module uses only safe code. bumpalo::Bump provides a safe bump allocator with automatic growth. reset() is safe and frees all allocations, making the memory available for reuse.

Structs

FrameArena

A per-frame bump allocator for temporary render-path allocations.

Constants

DEFAULT_ARENA_CAPACITY

Default initial capacity for the frame arena (256 KB).