Module counting 

Instrumented allocator wrapper for diagnostics and testing.

CountingAllocator wraps any Allocator and records per-call statistics: number of allocations / deallocations and total bytes involved. It is transparent — every call is forwarded unchanged to the inner allocator — and adds negligible overhead (four Cell<usize> increments).

Typical Use Cases

• Unit tests — assert that a data structure performs exactly the expected number of allocations.
• Benchmarks — measure live byte footprint.
• Debug builds — detect memory leaks (non-zero bytes_live at the end of a scope).

Structs

AllocStats

A snapshot of allocation statistics produced by CountingAllocator::stats.

CountingAllocator

An Allocator wrapper that records allocation and deallocation statistics.