IC Testkit Native

Std-only native allocation measurement by default. This package has no PocketIC, Host or canister dependencies and exposes no APIs on wasm32.

Install MeasuredAllocator::new(System) as the test binary's global allocator, or wrap another allocator. measure(iterations, operation) returns allocation and reallocation counts, net bytes, peak positive net bytes and elapsed time for this thread only. Keep workload construction and output formatting outside the measurement. Other threads are deliberately excluded; this is not a process RSS or IC instruction measurement.

Allocations freed during the scope may predate it: net bytes are signed and the peak is relative to the scope's starting point. Nested measurement refuses before running its operation. Unwinding disables measurement; the original panic remains.

Enable stable-memory for memory::MeteredMemory and MemoryIoCounts, using Platform 0.6.2's upstream Memory and VectorMemory identities. Clones share backing bytes and counters; reset() clears observations without clearing bytes. Read/write attempts and completed growth calls retain the backing's behavior, including specialized unsafe reads and refused growth. Check overflowed and refuse exact reports when set; counters saturate rather than wrap. These are native IO observations, not IC instructions or cycle costs. Workloads, corruption injection and production memory governance remain caller-owned.