Core no longer owns or drives OS threads. The runtime is now a single
tick-driven worker whose loop an external engine hosts and advances.
This is the cutover required before the engine seam is introduced.
Removed from core:
- Runtime::run() and its owned thread pool (spawn, park/unpark, join)
- notify_worker() and worker_threads: Vec<OnceLock<Thread>> plumbing
- Placement load-aware selector and its WorkerStats-driven next_worker()
- WorkerId newtype and the address->worker routing map; AddressMap is
now a plain AddrSet membership set
- num_threads from RuntimeConfig
Rewired for the single-worker tick API:
- python/wasm bindings, dashboard dummy node (deleted), myelin vastai
adapter, and the runtime/test suites
Cleanup folded in during review:
- prune three never-written WorkerStats counters (cross_sends,
messages_dropped, restarts)
- collapse the redundant tick_all params onto the WorkerContext handle
Signed-off-by: Zachery Aaron Shores-Chmielewski <zacheryasc@gmail.com>
Remove the datastore crate, the top-level design/orchestration/ring specs, the
benches, and the ci config. Add the dashboard host telemetry sampler
(cpu/disk/net/gpu/mem). Localize the pipeline-parallel e2e stub/mock paths.
Signed-off-by: Zachery Aaron Shores-Chmielewski <zacheryasc@gmail.com>
Extract the timer wheel and watch registry from the worker into a reusable std-extension crate, generalize the worker around a RuntimeExtension factory, and decompose the monolithic runtime test file into focused suites.
- crates/std: extract TimerWheel (deterministic tick-counted one-shot/interval timers) and WatchRegistry (target-to-watcher death-notification index) out of src/worker.rs into reusable modules
- crates/std: add Ctx extension traits (CtxMonitoring, CtxNaming, CtxWatching, CtxTimers) and Runtime extension traits (RuntimeNaming, RuntimeWatching, RuntimeGroups) wiring monitor/name/watch/timer/group support
- src/worker.rs: replace the hard-coded timer/watch fields with a generic RuntimeExtension factory and add route_to_pool_or_remote for message routing (local pool, then cross-worker address map, then external inboxes)
- tests: split the 4622-line tests/runtime_api.rs into focused suites (actor_lifecycle, message_delivery, runtime_stress, std_extension) plus a shared tests/common/mod.rs harness, and drop watch_api.rs
- benches/fuzz: add runtime_benchmarks and adjust the runtime fuzz target
- tools/docs: add fn_complexity.py and loc_analysis.py analysis scripts and refresh the runtime and worker-thread docs
Signed-off-by: Zachery Aaron Shores-Chmielewski <zacheryasc@gmail.com>
