Module bump 

Lock-free bump (linear) allocator.

A bump allocator maintains a single monotonically-increasing offset into a fixed backing buffer. Each allocation simply advances the offset by the required (aligned) size.

Trade-offs

Pro	Con
O(1) allocation with zero fragmentation	No individual deallocation
Thread-safe without a mutex (CAS loop)	Must call [reset] to reclaim memory
Minimal memory overhead per allocation	Buffer size fixed at construction

Usage

static mut BUF: [u8; 4096] = [0u8; 4096];
let bump = BumpAllocator::new(unsafe { &mut BUF });
let vec: ExVec<u32> = ExVec::new(&bump);

Structs

BumpAllocator

A thread-safe, lock-free bump allocator backed by a static byte buffer.