- Clone CodSpeed's codspeed-cpp repo (pinned to SHA) in CI
- Create PlatformIO-compatible library.json combining google_benchmark
and codspeed core sources for proper instrumentation
- Pass library path via BENCHMARK_LIB env var to cpp_benchmark.py
- Use simulation mode for reproducible CPU instruction counting
- Locally, vanilla google/benchmark is used (no CodSpeed instrumentation)
Core is not a component — its benchmarks belong in tests/benchmarks/core/
not tests/benchmarks/components/core/. Add extra_include_dirs parameter
to build_and_run to support non-component benchmark directories.
Add automated benchmarks using Google Benchmark to prevent performance
regressions in the API protobuf encoding/decoding and core loop paths.
Benchmarks cover:
- Protobuf encode: SensorState, BinarySensorState, HelloResponse,
LightState, DeviceInfoResponse (20 nested devices + 20 areas)
- Protobuf decode: HelloRequest, SwitchCommand, LightCommand
- Protobuf calculate_size and full calc+encode send path
- Varint parse/encode/size for various value ranges
- Scheduler call/next_schedule_in with idle and active timers
- Application loop component dispatch and blocking guard overhead
Infrastructure:
- Extract shared build logic from cpp_unit_test.py into test_helpers.py
- Add cpp_benchmark.py mirroring the unit test build pattern
- Support benchmark.yaml per component dir for declaring dependencies
- Add CodSpeed CI workflow triggered on api/core changes
- Fix ProtoMessage protected destructor on host platform
J. Nick Koston