Aleksey Shakhmatov
e28eb3c22e
Adds the measurement core: - CountingAllocator: a thin wrapper over std.mem.Allocator vtable that tracks alloc/free counts and total bytes allocated, exposing a reset() used between attempts of the adaptive loop. - stats.summarize: min / mean / sample stddev over an array of f64, used to aggregate --count repetitions. - Benchmark: user-facing handle passed to each bench fn — n, allocator (counting-wrapped), io, with snake_case methods reset_timer / stop_timer / start_timer / set_bytes / report_allocs / keep / run (sub-bench). Times via std.Io.Timestamp.now(io, .awake). - runner.run_one: galloping iteration count toward --min-time, with ×100 growth cap per step and "nice-number" rounding, matching Go's testing pkg heuristic.