diff --git a/CLAUDE/TASK.md b/CLAUDE/TASK.md deleted file mode 100644 index dc04fff..0000000 --- a/CLAUDE/TASK.md +++ /dev/null @@ -1,49 +0,0 @@ -Plan: - You are to improve this codebase via: - - investigating similar codebases - - identifying and summarizing their design decisions when compared to swactor: - - runtime engine - - benchmarking - - testing - - overall performance - - etc. - - implementing improvements based on your anaylsis - -Workflow: - - Read `CLAUDE/TASK.md` and `CLAUDE/notes/progress.md` - - Identify what stage you are on. - - Read and update yourself as necessary. - - Proceed to accomplishing the next task as written in `progress.md` - - For each attempt at any step, keep a record. If you reach attempt 3, step back, document, and try something else. - - When done, because attempt limit or task success: - - update `progress.md` with: - - Completed this session - - Next steps (specific, actionable) - - Open Questions - - Blockers - - make a commit - - compress your context and start the loop again - -Style: - - Do not add to existing modules in the root swactor `src/` they should stay as they are. You may modify but not change module structure. - - Integration tests in `tests/`, benchmark code in `benches/` - - cap execution time at 2 minutes max for fuzz, or benchmarks, or single test suite - - if they take too long, refactor and break up into logical modules - - You may modify these as you wish, so long as logical 'coverage' does not decline. - - Report all your changes to architecture with changes to the `docs/` items - - all notes you wish to keep across iterations shall go in the `CLAUDE/notes/` folder - -Example loop (not restrictive, feel free to ignore if prudent): - - Pick a related codebase and a concept to execute (benchmarks, test coverage, engine performance under various scenarios) - - compare to swactor - - make analysis - - implement plan - - execute - - evaluate - - if satisfied, pick a new codebase and/or concept. If not, repeat from step 'compare to swactor' - -Before git commit: - - all `cargo test` passes, including feature gated material - - if a test fails, investigate do not ignore or delete - - You can combine tests but not skip code paths or delete them for active code - - if a fix takes > 3 attempts, log and move on \ No newline at end of file diff --git a/CLAUDE/notes/baseline_benchmarks.md b/CLAUDE/notes/baseline_benchmarks.md deleted file mode 100644 index 3eb2174..0000000 --- a/CLAUDE/notes/baseline_benchmarks.md +++ /dev/null @@ -1,32 +0,0 @@ -# Baseline Benchmarks (pre-improvements) - -## Latency (single-threaded) -| Benchmark | Time | -|-----------|------| -| spawn | 1.28 µs | -| message_roundtrip | 2.24 µs | -| send_fire_and_forget | 1.50 µs | -| inbox_creation | 1.63 µs | - -## Throughput (single-threaded) -| Benchmark | Time | Throughput | -|-----------|------|-----------| -| single_actor/100 | 15.0 µs | 6.65 Melem/s | -| single_actor/1000 | 57.5 µs | 17.4 Melem/s | -| single_actor/10000 | 474.6 µs | 21.1 Melem/s | -| multi_actor/10x100 | 80.6 µs | 12.4 Melem/s | -| multi_actor/100x100 | 610.6 µs | 16.4 Melem/s | -| multi_actor/100x1000 | 6.10 ms | 16.4 Melem/s | -| ring/10 | 6.3 µs | 1.75 Melem/s | -| ring/100 | 99.9 µs | 1.01 Melem/s | -| ring/500 | 919.0 µs | 545 Kelem/s | -| spawn/100 | 33.5 µs | 2.99 Melem/s | -| spawn/1000 | 326.2 µs | 3.07 Melem/s | -| spawn/5000 | 1.69 ms | 2.96 Melem/s | - -## Key Observations -- Single-actor throughput scales well: 6.65M → 21.1M msgs/s as batch size grows (amortized overhead) -- Multi-actor throughput lower due to iteration overhead across actors -- Ring throughput degrades with ring size (expected: each message traverses more actors) -- Spawn throughput steady at ~3M/s regardless of batch size -- Message roundtrip latency: 2.24µs (spawn + deliver + process + reply + deliver) diff --git a/CLAUDE/notes/constraints.md b/CLAUDE/notes/constraints.md deleted file mode 100644 index 402e536..0000000 --- a/CLAUDE/notes/constraints.md +++ /dev/null @@ -1,30 +0,0 @@ -# Task Constraints (from user) - -## Scope of Study -- **Broad survey**: Not just Rust actor frameworks — include: - - Rust: ractor, actix, kameo, coerce, stakker, xactor, bastion - - Non-actor runtimes: tokio, C++ node/libuv event loop - - OS-level: `process` scheduling/logic in operating systems - - Classic actor systems: Erlang/OTP, Akka/Pekko (JVM) - - Any widely-used, well-reputed system - -## Priority & Approach -- **Interleaved**: Pick a topic → analyze competitors → benchmark swactor → improve → repeat -- **Also improve testing methodology and coverage** based on analysis -- **Look at bug report histories** of competitor projects for insights -- Behavioral tests only (Given/When/Then), no white-box/structural tests - -## Code Structure Rules -- **src/ is frozen**: No new files, no new modules, no structural changes. Only modify existing files in-place. -- **No new dependencies** on the root crate (swactor's Cargo.toml) -- May add new crates to `crates/` but they must NOT be pulled into `src/` -- Cap at ~5 new crates — if approaching that, prune back -- Integration tests in `tests/`, benchmarks in `benches/` -- Benchmark execution capped at 2 minutes max -- All notes go in `CLAUDE/notes/` -- Report architecture changes in `docs/` - -## Commit Rules -- All `cargo test` must pass (including feature-gated) -- Never skip/delete tests for active code -- If a fix takes >3 attempts, log and move on diff --git a/CLAUDE/notes/dispatch_comparison.md b/CLAUDE/notes/dispatch_comparison.md deleted file mode 100644 index 24e2fa0..0000000 --- a/CLAUDE/notes/dispatch_comparison.md +++ /dev/null @@ -1,102 +0,0 @@ -# Dispatch Model Comparison: Stakker vs Actix vs Swactor - -## Stakker — Closure-Based Dispatch (No HashMap, No Downcast) - -**Architecture**: Single-threaded, synchronous actor runtime (like swactor). Messages are `FnOnce` closures, not typed structs. - -**Key Design**: -- `call!` macro turns method calls into closures: `call!([actor], method(arg1, arg2))` generates a `FnOnce` that directly calls the method on the actor -- The closure captures the actor reference and method pointer — dispatch is a **direct function call**, not a downcast -- Closures stored in a **flat heterogeneous FnOnce queue** (byte Vec) — no per-message heap allocation -- Compiler can inline the closure, reducing message handling to "a single branch to optimised inlined code" - -**Why It's Fast**: -- Zero `Box` allocation per message -- Zero `TypeId` downcast per message -- Zero HashMap lookup per message (actors addressed by direct `ActorOwn` references, not opaque addresses) -- Queue is a flat contiguous memory region — excellent cache locality - -**Tradeoffs**: -- Single-threaded only (no multi-worker routing) -- No location-transparent addresses (can't route to remote actors) -- Uses `unsafe` code by default for the FnOnce queue - -## Actix — Vtable Dispatch (No HashMap, No Downcast) - -**Architecture**: Async actor framework on tokio. Each actor is a pollable Future on an Arbiter thread. - -**Key Design**: -- `Addr` wraps an `AddressSender` — a direct channel reference, not an address in a map -- Messages wrapped as `Box>` — vtable dispatch, not `Box` downcast -- Custom Vyukov lock-free MPSC queue (single `AtomicPtr::swap` for push) -- Default mailbox capacity: 16 - -**Why It's Fast**: -- `Addr` is a direct channel reference — zero HashMap lookup per send -- `EnvelopeProxy` vtable call — one virtual dispatch, no TypeId comparison -- Vyukov MPSC queue — lock-free push, minimal atomic operations -- `do_send()` bypasses backpressure for internal messages - -**Tradeoffs**: -- Requires async runtime (tokio dependency) -- `Addr` is typed — can't send different message types without `Recipient` adaptation -- `do_send()` silently drops messages to closed actors (no error feedback) - -## Swactor — Type-Erased Dispatch with HashMap Routing - -**Architecture**: Synchronous tick-based runtime with multi-worker support. Messages are `Box`. - -**Message Send Path** (per-message costs): -1. `Box::new(msg)` — heap allocation (~10-15ns) -2. `address_map.lookup(&addr)` — RwLock read + HashMap get with 32-byte key -3. Push to VecDeque or crossbeam queue - -**Message Process Path** (per-message costs): -1. `slot.mailbox.pop_front()` — VecDeque pop -2. `msg.downcast::()` — TypeId comparison (~1ns) -3. `catch_unwind(|| actor.handle_any(ctx, msg))` — unwind setup (~3-5ns) - -**Why It's Slower on Paper**: -- HashMap lookup on every send AND every deliver (2 lookups per message) -- ActorAddress is 32 bytes — expensive to hash (SipHash: ~15ns for 32 bytes) -- `Box` heap allocation on every send - -**Why This Architecture Exists**: -- Location-transparent 32-byte addresses enable multi-worker routing, transport layer, and distribution -- Type erasure enables heterogeneous mailboxes and type-agnostic forwarding -- HashMap enables O(1) address → worker lookup for any actor, from any thread - -## Optimization Applied: Identity Hashing - -**Problem**: Every HashMap operation hashes 32 bytes of ActorAddress with SipHash. - -**Solution** (two-layer): -1. Custom `Hash` impl on ActorAddress — only hashes first 8 bytes via `write_u64` (SipHash on 8 bytes is ~3x faster than 32 bytes) -2. Identity hasher (`AddrHasher`) on hot-path HashMaps — uses the 8-byte hash value directly as the bucket index, skipping SipHash entirely - -**Microbenchmark Results** (same-process A/B comparison, reliable): - -| Operation | SipHash (8-byte) | Identity | Speedup | -|-----------|------------------|----------|---------| -| Hash | 1.35 ns | 0.67 ns | 2.0x | -| Lookup (100 entries) | 29.8 ns | 15.5 ns | 1.9x | -| Lookup (1000 entries) | 38.0 ns | 8.2 ns | 4.6x | -| Insert 1000 | 48.2 µs | 21.1 µs | 2.3x | - -**Why It's Safe**: ActorAddress bytes come from `getrandom` — cryptographically random, providing excellent uniform distribution without additional mixing. - -## Summary Table - -| Aspect | Stakker | Actix | Swactor (optimized) | -|--------|---------|-------|---------------------| -| Message type | `FnOnce` closure | `Box` | `Box` | -| Dispatch | Direct call / inlined | Vtable call | TypeId downcast | -| Address lookup | None (direct ref) | None (direct channel) | Identity-hash HashMap | -| Per-msg alloc | None (flat queue) | Box (MPSC node) | Box (heap + VecDeque) | -| Multi-thread | No | Yes (tokio) | Yes (worker threads) | -| Location transparency | No | No | Yes (32-byte address) | -| Remote transport | No | No (without extras) | Yes (pluggable) | - -## Key Insight - -Stakker and Actix are faster because they avoid the per-message HashMap lookup entirely — addresses are direct references, not opaque identifiers that need routing. Swactor pays for HashMap routing because its 32-byte addresses enable multi-worker distribution and remote transport. The identity hasher minimizes this cost without changing the architecture. diff --git a/CLAUDE/notes/progress.md b/CLAUDE/notes/progress.md deleted file mode 100644 index 7ab1baa..0000000 --- a/CLAUDE/notes/progress.md +++ /dev/null @@ -1,62 +0,0 @@ -# Progress Log - -## Current Stage: Cycle 20 — Hot-Path Performance (Identity Hashing) - -### Status: COMPLETE - -### Research -- **Stakker**: Closure-based dispatch. `call!` macro generates `FnOnce` closures pushed to a flat byte Vec queue. No HashMap, no Box, no downcast. Direct method calls that the compiler can inline. Single-threaded only. -- **Actix**: Vtable dispatch via `Box>`. `Addr` is a direct channel reference (no HashMap lookup). Custom Vyukov lock-free MPSC queue. Default mailbox capacity 16. -- **Key insight**: Both avoid HashMap entirely by using direct references. Swactor needs HashMaps for location-transparent 32-byte addresses (multi-worker routing + transport). The optimization is to minimize HashMap cost, not eliminate it. -- Full analysis: `CLAUDE/notes/dispatch_comparison.md` - -### Implementation -1. **Custom `Hash` for ActorAddress** (`src/actor.rs`) — only hashes first 8 bytes instead of 32. All HashMaps using ActorAddress benefit automatically. -2. **Identity hasher** (`src/delivery.rs`) — `AddrHasher`/`AddrBuildHasher` that passes the 8-byte hash value through as the bucket index directly, skipping SipHash. -3. **Hot-path HashMap replacement** — `AddrMap` type alias used in: - - `AddressMap.inner` (delivery.rs) — on every send - - `ActorPool.actors` (worker.rs) — on every deliver and tick_all - - `InboxRegistry.senders` (delivery.rs) - - `MonitorRegistry.monitors` (delivery.rs) - - `NameRegistry.reverse` (delivery.rs) - - `GroupRegistry.memberships` + `AddrSet` for group member sets (delivery.rs) - - `TransportRouter.routes` (transport.rs) -4. **Stop-requests optimization** (worker.rs) — `is_empty()` short-circuit before linear scan in inner message loop - -### Microbenchmark Results (reliable, same-process A/B) -| Operation | SipHash | Identity | Speedup | -|-----------|---------|----------|---------| -| Hash | 1.35 ns | 0.67 ns | 2.0x | -| Lookup/100 | 29.8 ns | 15.5 ns | 1.9x | -| Lookup/1000 | 38.0 ns | 8.2 ns | 4.6x | -| Insert 1000 | 48.2 µs | 21.1 µs | 2.3x | - -Note: End-to-end benchmarks unreliable in sandbox (55% variation between identical runs). Microbenchmarks confirmed significant hash/lookup improvement. - -### Tests -- 143 behavioral tests pass (140 existing + 3 new) -- 7 proptest pass -- New tests: - - `many_actors_all_receive_correct_messages` — 200 actors, verifies no misrouting from identity hasher - - `ring_routing_unchanged_after_hasher_optimization` — 100-actor chain, verifies address_map correctness - - `stop_self_with_pending_messages_still_works` — verifies stop_requests optimization correctness - -### Files Modified -- `src/actor.rs` — Custom Hash impl for ActorAddress (8-byte) -- `src/delivery.rs` — AddrHasher, AddrBuildHasher, AddrMap, AddrSet types; 5 HashMap replacements -- `src/worker.rs` — ActorPool.actors AddrMap; stop_requests optimization -- `src/transport.rs` — TransportRouter.routes AddrMap -- `Cargo.toml` — Added hasher_benchmarks bench entry -- `benches/hasher_benchmarks.rs` — New: component-level microbenchmarks -- `tests/runtime_api.rs` — 3 new behavioral tests -- `CLAUDE/notes/dispatch_comparison.md` — New: Stakker/Actix/Swactor analysis - -## Next Steps -- Profile the `Box::new(msg)` allocation cost — SmallBox/inline storage could eliminate heap alloc for small messages -- Investigate VecDeque mailbox alternative (slab-allocated ring buffer) -- Consider `enum_dispatch` pattern for avoiding `dyn Any` downcast (would require API changes) -- Benchmark on dedicated hardware (sandbox too noisy for reliable end-to-end measurement) - -## Open Questions -- Is 8 bytes sufficient for the identity hash? (Yes — 2^64 from crypto-random bytes) -- Should we provide a `with_hasher` public API for users? (No — internal optimization only) diff --git a/CLAUDE/notes/research_synthesis.md b/CLAUDE/notes/research_synthesis.md deleted file mode 100644 index f7fcca2..0000000 --- a/CLAUDE/notes/research_synthesis.md +++ /dev/null @@ -1,185 +0,0 @@ -# Research Synthesis: Competitor Analysis - -## Frameworks Studied -1. **Ractor** (Rust) — async task-per-actor on tokio -2. **Tokio** (Rust) — work-stealing async runtime -3. **Erlang/OTP BEAM** — reduction-counted preemptive scheduler -4. **Linux CFS/EEVDF** — vruntime fairness, work stealing, adaptive ticks -5. **libuv/Node.js** — single-threaded event loop with phase-based execution - -## Critical Finding: Swactor Fairness Bug - -`tick_all` in `worker.rs` drains the ENTIRE mailbox for each actor before moving to the next: -```rust -while let Some(msg) = slot.mailbox.pop_front() { - // processes ALL messages for actor A before moving to actor B -} -``` - -If actor A has 10,000 queued messages, all other actors on the same worker are completely starved -until A finishes. Every other runtime studied prevents this: -- **BEAM**: 4000 reductions per process, then preempt -- **Tokio**: 128-256 operation cooperative budget per task -- **libuv**: Round-robin across handlers; no single handler drains completely -- **Linux CFS**: vruntime-based fairness; time slices enforced - -## Ranked Improvement Opportunities - -### P0: Per-Actor Message Budget (Fairness) -- **Impact**: Prevents starvation; critical for production workloads -- **Effort**: Small — modify `tick_all` loop in `worker.rs` -- **Source**: BEAM reductions, tokio coop budget -- **Design**: Process up to N messages per actor per tick, configurable via RuntimeConfig - -### P1: Improved Benchmarks -- **Impact**: Can't improve what you can't measure -- **Effort**: Medium — new benchmark scenarios -- **Source**: Ractor benchmarks, tokio benchmarks -- **New scenarios needed**: - - Fairness: imbalanced load (1 hot actor + 99 cold actors) - - Message size sensitivity (8B, 64B, 256B, 1KB) - - Contention: many-to-one fanin - - Latency percentiles (p50, p99, p999) - - Cross-worker vs same-worker message delivery - -### P2: Better Testing Coverage -- **Impact**: Catches regressions, validates fairness guarantees -- **Effort**: Medium -- **Source**: BEAM testing patterns, tokio Loom -- **New tests needed**: - - Fairness: hot actor doesn't starve cold actors - - Backpressure: tiny buffer under load - - Concurrent spawn+send races - - Multi-threaded delivery guarantees - -### P3: Adaptive Backoff with Thread Parking -- **Impact**: Better latency under varying load; power savings -- **Effort**: Medium — modify `run` loop in `worker.rs` -- **Source**: Tokio parker, Linux NO_HZ -- **Design**: Replace spinning with condvar-based parking; use notification to wake - -### P4: Work Stealing (Future) -- **Impact**: Dynamic load balancing -- **Effort**: Large — significant architectural change -- **Source**: Tokio steal-half, BEAM migration plans -- **Note**: Would require stealing actors between workers, which changes ownership - -## Key Design Comparisons - -| Dimension | Swactor | Ractor | Tokio | BEAM | -|-----------|---------|--------|-------|------| -| Scheduling | Sync tick | Async task-per-actor | Work-stealing | Reduction preemption | -| Fairness | None (drain all) | N/A (1 task = 1 actor) | Coop budget (128) | 4000 reductions | -| Backpressure | Bounded crossbeam ring | None (unbounded) | Bounded MPSC | Off-heap mailbox | -| Work stealing | None | Tokio handles it | Steal-half, N/2 searchers | Steal + migrate | -| Panic handling | catch_unwind + poison | AssertUnwindSafe + supervisor | N/A | Process isolation | -| Message passing | Box downcast | Box downcast | Typed channels | Term copying | - -## Ractor Bug History Lessons -- Destructive `get_children()` — snapshot methods must not mutate state -- OutputPort silent drops — bounded channels need explicit backpressure, not silent overflow -- Remote actor latency regression — cross-runtime messaging needs careful ordering -- Memory bloat per actor — each channel/structure per actor adds up at scale - -## Tokio Patterns to Adopt -1. LIFO slot for same-worker sends (cache locality) -2. Searcher count limiting (N/2 max) for cross-worker stealing -3. Steal-half strategy (amortize overhead) -4. Global queue interval checking (reduce contention) -5. Loom-style testing for lock-free code -6. Single allocation per actor context (hot/cold layout) - -## Additional Frameworks Studied (Cycle 2) - -### Kameo (v0.19) -- Fully async on tokio, one task per actor -- Dual mailbox: bounded (default 64) or unbounded tokio mpsc channels -- Proper backpressure via bounded mpsc sender blocking -- Typed signals (no Box) — vtable dispatch, no downcast failures -- Erlang-style links for supervision (`on_link_died`) -- `on_panic` hook can restart actor (vs swactor's permanent poisoning) -- Bugs: deadlocks in link establishment, leaked ActorRef preventing stop - -### Actix (v0.13) -- Context-as-Future model — each actor is a single pollable Future on an Arbiter -- **Custom Vyukov lock-free MPSC queue** (not tokio channels) — push is single atomic_swap -- Default mailbox capacity: 16 (tiny!) -- `do_send()` bypasses capacity for internal notifications -- Mailbox has 256-message assertion guard (similar to our budget approach!) -- vtable dispatch via `Box>` — no Any downcast -- SyncArbiter: crossbeam_channel thread pool for blocking actors -- WHY FAST: custom MPSC queue, no async overhead for message processing, - same-thread actors avoid cross-thread coordination, SmallVec for futures - -### Swactor Advantages (confirmed) -- Synchronous tick model: deterministic, no async overhead, simulation-friendly -- Hybrid channel: bounded ring + unbounded overflow = no message loss -- Per-actor message budget: validated by BEAM (4000 reds), tokio (128 ops), actix (256 assert) -- No tokio dependency: could run on bare metal -- Detailed per-phase timing stats (6-phase TickTiming) - -### Swactor Weaknesses to Address -- Box downcast can fail silently → type mismatch tracking needed (have it) -- ~~No backpressure~~ → FIXED: optional bounded mailbox with DropNewest/DropOldest (Cycle 6) -- ~~Panicked actors permanently poisoned~~ → FIXED: factory-based restart with max_restarts limit (Cycle 7) -- ~~Spin/sleep backoff wastes CPU~~ → FIXED: thread parking with instant wakeup (Cycle 3) -- ~~No lifecycle hooks~~ → FIXED: on_start/on_stop with default no-ops (Cycle 9) -- ~~No graceful stop~~ → FIXED: ctx.stop_self() (immediate) + runtime.stop_actor() (queued) (Cycle 9) -- No supervision trees (factory restart + lifecycle hooks are steps toward this) - -## Lifecycle Hooks Deep Dive (Cycle 9) - -| Framework | on_start | on_stop | on_panic | Self-stop | External stop | -|-----------|----------|---------|----------|-----------|---------------| -| Erlang | init/1 | terminate/2 (NOT on crash) | N/A | {stop,Reason,State} | gen_server:stop | -| Akka | preStart | postStop (always) | preRestart | context.stop(self) | PoisonPill / stop | -| Actix | started | stopped | N/A | ctx.stop() | addr.do_send(Stop) | -| Kameo | on_start | on_stop | on_panic | Context::stop() | stop_gracefully/kill | -| Ractor | pre_start | post_stop (NOT on kill/panic) | N/A | stop() | Signal::Kill | -| **Swactor** | **on_start** | **on_stop (NOT on panic)** | N/A | **ctx.stop_self()** | **runtime.stop_actor()** | - -Design decisions: -- on_stop NOT called on panic (matches Erlang/Ractor — corrupt state is unsafe) -- ctx.stop_self() is immediate (after current message) via request_stop buffer -- runtime.stop_actor() uses StopSignal message (PoisonPill semantics — queued after existing msgs) -- on_start panics → immediate poison (no restart attempted — init failure is fatal) -- Restarted actors get on_start called again on fresh instance - -## Work Stealing Deep Dive (Cycle 5) - -### Cross-Runtime Comparison - -| Aspect | Tokio | Go | BEAM | ForkJoinPool | -|--------|-------|-----|------|-------------| -| Queue | Fixed 256-slot ring | 256-slot ring + runnext | Per-priority linked | Growable array deque | -| Steal granularity | Half victim's queue | Half victim's runq | Individual processes | One task at a time | -| LIFO fast-path | Dedicated slot (3-use cap) | runnext (stealable 4th try) | None | Owner pops from top | -| Global queue | Mutex intrusive list | Checked 1/61 ticks | Per-priority migration | Even-indexed submit queues | -| Searcher limit | N/2 workers | GOMAXPROCS/2 | N/A (proactive migration) | Idle stack in ctl field | -| Balance strategy | Reactive steal | Reactive steal | **Proactive migration** + reactive | Reactive scan | -| Load compaction | No (spread) | No (spread) | **Yes** (min schedulers) | No (spread) | - -### Key Patterns - -1. **LIFO slot**: Every runtime has one. Improves cache locality by running the recipient immediately after the sender. Tokio caps at 3 consecutive uses to prevent starvation. - -2. **Steal-half**: Tokio and Go both steal half the victim's queue. This amortizes the overhead of cross-thread coordination — O(1) per stolen item instead of O(1) per steal. - -3. **N/2 searcher limit**: Both Tokio and Go cap concurrent searchers to prevent thundering herd. Without it, all N workers scanning causes O(N²) cache-line bouncing. - -4. **BEAM's migration**: Unique dual approach — reactive stealing when idle, proactive migration via periodic `check_balance()` that computes migration paths based on average max queue length. - -### Feasibility for Swactor - -- **Full actor migration**: Mechanically possible (ActorSlot is Send), but has 1-tick message loss window and requires push-based donation (ActorPool not Sync → no pull stealing) -- **Message stealing without actors**: Impossible — actor IS the state, messages without the actor are meaningless -- **Transfer queue snooping**: Pointless without actor migration -- **Load-aware placement** ✅ IMPLEMENTED: Placement reads per-worker stats to bias toward lighter workers, with round-robin fallback when stats are equal - -### Decision: Load-Aware Placement over Work Stealing - -Chose load-aware placement because: -- Zero correctness risk (no message loss, no ordering changes) -- O(N) atomic loads per spawn (trivial for N≤8 workers) -- Handles the primary source of imbalance: uneven spawn distribution -- Full work stealing deferred — would require migration channels, address map coordination, and forwarding tombstones diff --git a/Cargo.lock b/Cargo.lock index 653bd0f..efcff0d 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1489,9 +1489,18 @@ dependencies = [ "proptest", "proptest-state-machine", "serde", + "swactor-std", "tracing", ] +[[package]] +name = "swactor-std" +version = "0.1.0" +dependencies = [ + "getrandom 0.2.17", + "swactor", +] + [[package]] name = "syn" version = "2.0.114" diff --git a/Cargo.toml b/Cargo.toml index 2248d7c..2dcb021 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -1,5 +1,5 @@ [workspace] -members = [".", "crates/python", "crates/wasm", "crates/simulation", "crates/runtime-dashboard", "crates/distribution", "crates/simulation-dashboard"] +members = [".", "crates/python", "crates/wasm", "crates/simulation", "crates/runtime-dashboard", "crates/distribution", "crates/simulation-dashboard", "crates/std"] exclude = ["tools/depgraph"] [package] @@ -34,6 +34,7 @@ crossbeam-utils = "0.8.21" criterion = { version = "0.5", features = ["html_reports"] } proptest = "1" proptest-state-machine = "0.3" +swactor-std = { path = "crates/std" } [[bench]] name = "runtime_benchmarks" diff --git a/benches/runtime_benchmarks.rs b/benches/runtime_benchmarks.rs index a0e5a73..57fa122 100644 --- a/benches/runtime_benchmarks.rs +++ b/benches/runtime_benchmarks.rs @@ -1,11 +1,13 @@ use criterion::{ criterion_group, criterion_main, BatchSize, BenchmarkId, Criterion, Throughput, }; +use std::sync::Arc; use swactor::{ actor::{ActorAddress, ActorInterface}, config::RuntimeConfig, runtime::{Ctx, Runtime}, }; +use swactor_std::{RuntimeGroups, RuntimeNaming, StdExtension}; // --------------------------------------------------------------------------- // Helper @@ -615,7 +617,8 @@ fn registry_benchmarks(c: &mut Criterion) { b.iter_batched( || { counter += 1; - let rt = Runtime::new(make_config(1_000, 1_000)); + let rt = Runtime::new(make_config(1_000, 1_000)) + .with_extension(Arc::new(StdExtension::new())); (rt, counter) }, |(rt, i)| { @@ -632,7 +635,8 @@ fn registry_benchmarks(c: &mut Criterion) { group.bench_function("where_is_100_names", |b| { b.iter_batched( || { - let rt = Runtime::new(make_config(1_000, 1_000)); + let rt = Runtime::new(make_config(1_000, 1_000)) + .with_extension(Arc::new(StdExtension::new())); for i in 0..100 { rt.spawn_named(format!("actor-{i}"), NoopActor).unwrap(); } @@ -655,7 +659,8 @@ fn registry_benchmarks(c: &mut Criterion) { |b, &members| { b.iter_batched( || { - let rt = Runtime::new(make_config(members + 100, members * 10)); + let rt = Runtime::new(make_config(members + 100, members * 10)) + .with_extension(Arc::new(StdExtension::new())); for _ in 0..members { let addr = rt.spawn(SinkActor).unwrap(); rt.join_group(addr, "bench-group"); diff --git a/crates/std/Cargo.toml b/crates/std/Cargo.toml new file mode 100644 index 0000000..99e4b2a --- /dev/null +++ b/crates/std/Cargo.toml @@ -0,0 +1,12 @@ +[package] +name = "swactor-std" +version = "0.1.0" +edition = "2024" + +[features] +default = ["getrandom"] +getrandom = ["dep:getrandom"] + +[dependencies] +swactor = { path = "../.." } +getrandom = { version = "0.2", optional = true } diff --git a/crates/std/src/ctx_ext.rs b/crates/std/src/ctx_ext.rs new file mode 100644 index 0000000..4db2b15 --- /dev/null +++ b/crates/std/src/ctx_ext.rs @@ -0,0 +1,113 @@ +use swactor::actor::{ActorAddress, ActorInterface, Ctx, Message, MonitorRef}; +use swactor::Error; + +use crate::StdExtension; + +fn get_ext<'a>(ctx: &'a Ctx) -> &'a StdExtension { + ctx.extension() + .expect("StdExtension not installed — use Runtime::with_extension()") + .as_any() + .downcast_ref::() + .expect("Extension is not StdExtension") +} + +/// Monitoring extension for [`Ctx`]. +/// +/// Provides `monitor` / `demonitor` via the [`StdExtension`] monitor registry. +pub trait CtxMonitoring { + /// Subscribe to death notifications from `target`. Returns a [`MonitorRef`] + /// that can be used to cancel the subscription. + fn monitor(&self, target: ActorAddress) -> MonitorRef; + + /// Cancel a monitor subscription. + fn demonitor(&self, mref: MonitorRef); +} + +impl CtxMonitoring for Ctx<'_> { + fn monitor(&self, target: ActorAddress) -> MonitorRef { + get_ext(self).monitor_registry.register(self.self_addr(), target) + } + + fn demonitor(&self, mref: MonitorRef) { + get_ext(self).monitor_registry.deregister(mref); + } +} + +/// Naming extension for [`Ctx`]. +/// +/// Provides `where_is`, `register_name`, and `spawn_named` via the [`StdExtension`] +/// name registry. +pub trait CtxNaming { + /// Look up an actor address by its registered name. + fn where_is(&self, name: &str) -> Option; + + /// Register a name for the given address. + fn register_name(&self, name: impl Into, addr: ActorAddress) -> Result<(), Error>; + + /// Spawn an actor with a registered name, returning its address. + fn spawn_named(&self, name: impl Into, actor: A) -> Result; +} + +impl CtxNaming for Ctx<'_> { + fn where_is(&self, name: &str) -> Option { + get_ext(self).name_registry.lookup(name) + } + + fn register_name(&self, name: impl Into, addr: ActorAddress) -> Result<(), Error> { + get_ext(self).name_registry.register(name.into(), addr) + } + + fn spawn_named(&self, name: impl Into, actor: A) -> Result { + let name = name.into(); + let addr = self.spawn(actor)?; + if let Err(e) = get_ext(self).name_registry.register(name, addr) { + let _ = self.stop_actor(addr); + return Err(e); + } + Ok(addr) + } +} + +/// Group extension for [`Ctx`]. +/// +/// Provides `join_group`, `leave_group`, `publish`, and `group_members` via +/// the [`StdExtension`] group registry. +pub trait CtxGroups { + /// Add this actor to a named group. + fn join_group(&self, group: impl Into); + + /// Remove this actor from a named group. + fn leave_group(&self, group: &str); + + /// Broadcast a message to all members of a named group. + /// Returns the number of messages successfully enqueued. + fn publish(&self, group: &str, msg: M) -> usize; + + /// Return all members of a named group. + fn group_members(&self, group: &str) -> Vec; +} + +impl CtxGroups for Ctx<'_> { + fn join_group(&self, group: impl Into) { + get_ext(self).group_registry.join(group.into(), self.self_addr()); + } + + fn leave_group(&self, group: &str) { + get_ext(self).group_registry.leave(group, &self.self_addr()); + } + + fn publish(&self, group: &str, msg: M) -> usize { + let members = get_ext(self).group_registry.members(group); + let mut count = 0; + for member in &members { + if self.send(*member, msg.clone()).is_ok() { + count += 1; + } + } + count + } + + fn group_members(&self, group: &str) -> Vec { + get_ext(self).group_registry.members(group) + } +} diff --git a/crates/std/src/extension.rs b/crates/std/src/extension.rs new file mode 100644 index 0000000..fa7d20c --- /dev/null +++ b/crates/std/src/extension.rs @@ -0,0 +1,62 @@ +use std::any::Any; + +use swactor::actor::{ActorAddress, Down, StopReason}; +use swactor::extension::RuntimeExtension; + +use crate::group_registry::GroupRegistry; +use crate::monitor_registry::MonitorRegistry; +use crate::name_registry::NameRegistry; + +/// Standard library extension — provides naming, monitoring, and group registries. +/// +/// Install on a `Runtime` via `runtime.with_extension(Arc::new(StdExtension::new()))`. +pub struct StdExtension { + pub(crate) name_registry: NameRegistry, + pub(crate) monitor_registry: MonitorRegistry, + pub(crate) group_registry: GroupRegistry, +} + +impl StdExtension { + pub fn new() -> Self { + Self { + name_registry: NameRegistry::new(), + monitor_registry: MonitorRegistry::new(), + group_registry: GroupRegistry::new(), + } + } +} + +impl Default for StdExtension { + fn default() -> Self { + Self::new() + } +} + +impl RuntimeExtension for StdExtension { + fn on_actor_death( + &self, + dead: &[(ActorAddress, StopReason)], + ) -> Vec<(ActorAddress, Box)> { + let mut notifications = Vec::new(); + for &(addr, reason) in dead { + let watchers = self.monitor_registry.take_monitors(&addr); + for (_mref, watcher) in watchers { + let down = Down { addr, reason }; + notifications.push((watcher, Box::new(down) as Box)); + } + } + notifications + } + + fn cleanup_dead(&self, dead: &[ActorAddress]) { + for addr in dead { + self.name_registry.unregister_by_addr(addr); + self.group_registry.cleanup(addr); + self.monitor_registry.remove_watcher(addr); + } + } + + fn as_any(&self) -> &dyn Any { + self + } +} diff --git a/crates/std/src/group_registry.rs b/crates/std/src/group_registry.rs new file mode 100644 index 0000000..5b2ee9b --- /dev/null +++ b/crates/std/src/group_registry.rs @@ -0,0 +1,81 @@ +use std::collections::{HashMap, HashSet}; +use std::sync::RwLock; + +use swactor::actor::ActorAddress; +use swactor::{AddrBuildHasher, AddrMap, AddrSet}; + +/// Actor groups (pub-sub). Actors join/leave named groups; messages can be +/// broadcast to all members of a group. +/// +/// Groups are created lazily on first join and removed when empty. +pub struct GroupRegistry { + /// group_name → set of member addresses + groups: RwLock>, + /// actor_addr → set of group names (reverse map for O(G) cleanup on death) + memberships: RwLock>>, +} + +impl GroupRegistry { + pub fn new() -> Self { + Self { + groups: RwLock::new(HashMap::new()), + memberships: RwLock::new(HashMap::with_hasher(AddrBuildHasher)), + } + } + + /// Add an actor to a named group. Group is created if it doesn't exist. + pub fn join(&self, group: String, addr: ActorAddress) { + self.groups.write().unwrap() + .entry(group.clone()) + .or_insert_with(|| HashSet::with_hasher(AddrBuildHasher)) + .insert(addr); + self.memberships.write().unwrap() + .entry(addr) + .or_default() + .insert(group); + } + + /// Remove an actor from a named group. Empty groups are auto-deleted. + pub fn leave(&self, group: &str, addr: &ActorAddress) { + let mut groups = self.groups.write().unwrap(); + if let Some(members) = groups.get_mut(group) { + members.remove(addr); + if members.is_empty() { + groups.remove(group); + } + } + drop(groups); + if let Some(membership) = self.memberships.write().unwrap().get_mut(addr) { + membership.remove(group); + } + } + + /// Return all members of a group. + pub fn members(&self, group: &str) -> Vec { + self.groups.read().unwrap() + .get(group) + .map(|s| s.iter().copied().collect()) + .unwrap_or_default() + } + + /// Remove a dead actor from all its groups. + pub fn cleanup(&self, addr: &ActorAddress) { + let group_names = self.memberships.write().unwrap().remove(addr); + if let Some(names) = group_names { + let mut groups = self.groups.write().unwrap(); + for name in names { + if let Some(members) = groups.get_mut(&name) { + members.remove(addr); + if members.is_empty() { + groups.remove(&name); + } + } + } + } + } + + /// Return all active group names. + pub fn group_names(&self) -> Vec { + self.groups.read().unwrap().keys().cloned().collect() + } +} diff --git a/crates/std/src/lib.rs b/crates/std/src/lib.rs new file mode 100644 index 0000000..3481957 --- /dev/null +++ b/crates/std/src/lib.rs @@ -0,0 +1,14 @@ +mod supervisor; +mod router; +pub mod name_registry; +pub mod monitor_registry; +pub mod group_registry; +mod extension; +mod ctx_ext; +mod runtime_ext; + +pub use supervisor::{ChildSpec, RestartPolicy, Supervisor, SupervisorStrategy}; +pub use router::{Router, RoutingStrategy}; +pub use extension::StdExtension; +pub use ctx_ext::{CtxMonitoring, CtxNaming, CtxGroups}; +pub use runtime_ext::{RuntimeNaming, RuntimeGroups}; diff --git a/crates/std/src/monitor_registry.rs b/crates/std/src/monitor_registry.rs new file mode 100644 index 0000000..9a0b848 --- /dev/null +++ b/crates/std/src/monitor_registry.rs @@ -0,0 +1,79 @@ +use std::collections::HashMap; +use std::sync::atomic::{AtomicU64, Ordering}; +use std::sync::RwLock; + +use swactor::actor::{ActorAddress, MonitorRef}; +use swactor::{AddrBuildHasher, AddrMap}; + +/// Tracks monitor subscriptions: watched actor → list of (MonitorRef, watcher address). +/// +/// Write-rare (monitor/demonitor/death), read at cleanup time. +pub struct MonitorRegistry { + /// watched_addr → [(mref, watcher_addr)] + monitors: RwLock>>, + /// mref → watched_addr (for O(1) demonitor) + ref_to_target: RwLock>, + next_ref: AtomicU64, +} + +impl MonitorRegistry { + pub fn new() -> Self { + Self { + monitors: RwLock::new(HashMap::with_hasher(AddrBuildHasher)), + ref_to_target: RwLock::new(HashMap::new()), + next_ref: AtomicU64::new(1), + } + } + + /// Register a monitor: `watcher` wants to know when `target` dies. + pub fn register(&self, watcher: ActorAddress, target: ActorAddress) -> MonitorRef { + let id = self.next_ref.fetch_add(1, Ordering::Relaxed); + let mref = MonitorRef::from_raw(id); + self.monitors.write().unwrap() + .entry(target) + .or_default() + .push((mref, watcher)); + self.ref_to_target.write().unwrap().insert(mref, target); + mref + } + + /// Cancel a monitor by its ref. + pub fn deregister(&self, mref: MonitorRef) { + if let Some(target) = self.ref_to_target.write().unwrap().remove(&mref) { + let mut monitors = self.monitors.write().unwrap(); + if let Some(watchers) = monitors.get_mut(&target) { + watchers.retain(|(r, _)| *r != mref); + if watchers.is_empty() { + monitors.remove(&target); + } + } + } + } + + /// Remove and return all monitors for a dead actor. + pub fn take_monitors(&self, target: &ActorAddress) -> Vec<(MonitorRef, ActorAddress)> { + let watchers = self.monitors.write().unwrap().remove(target).unwrap_or_default(); + let mut ref_map = self.ref_to_target.write().unwrap(); + for (mref, _) in &watchers { + ref_map.remove(mref); + } + watchers + } + + /// Remove all monitor subscriptions where `addr` is the watcher (dead watcher cleanup). + pub fn remove_watcher(&self, addr: &ActorAddress) { + let mut monitors = self.monitors.write().unwrap(); + let mut ref_map = self.ref_to_target.write().unwrap(); + monitors.retain(|_target, watchers| { + watchers.retain(|(mref, watcher)| { + if watcher == addr { + ref_map.remove(mref); + false + } else { + true + } + }); + !watchers.is_empty() + }); + } +} diff --git a/crates/std/src/name_registry.rs b/crates/std/src/name_registry.rs new file mode 100644 index 0000000..3b1cc0f --- /dev/null +++ b/crates/std/src/name_registry.rs @@ -0,0 +1,59 @@ +use std::collections::HashMap; +use std::sync::RwLock; + +use swactor::actor::ActorAddress; +use swactor::{AddrBuildHasher, AddrMap}; + +/// Named actor registry — maps human-readable names to actor addresses. +/// +/// `RwLock` — same pattern as `AddressMap`. Write-rare (spawn/death), +/// read-often (lookup). A reverse map enables O(1) cleanup on actor death. +pub struct NameRegistry { + names: RwLock>, + reverse: RwLock>, +} + +impl NameRegistry { + pub fn new() -> Self { + Self { + names: RwLock::new(HashMap::new()), + reverse: RwLock::new(HashMap::with_hasher(AddrBuildHasher)), + } + } + + /// Register a name → address mapping. Returns `Err` if the name is already taken. + pub fn register(&self, name: String, addr: ActorAddress) -> Result<(), swactor::Error> { + let mut names = self.names.write().unwrap(); + if names.contains_key(&name) { + return Err(swactor::Error::from("Name already registered")); + } + names.insert(name.clone(), addr); + drop(names); + self.reverse.write().unwrap().insert(addr, name); + Ok(()) + } + + /// Look up an actor address by name. + pub fn lookup(&self, name: &str) -> Option { + self.names.read().unwrap().get(name).copied() + } + + /// Unregister a name, returning the address it was bound to. + pub fn unregister(&self, name: &str) -> Option { + let addr = self.names.write().unwrap().remove(name)?; + self.reverse.write().unwrap().remove(&addr); + Some(addr) + } + + /// Remove a name by address (called on actor death for auto-cleanup). + pub fn unregister_by_addr(&self, addr: &ActorAddress) { + if let Some(name) = self.reverse.write().unwrap().remove(addr) { + self.names.write().unwrap().remove(&name); + } + } + + /// Return all registered names. + pub fn registered_names(&self) -> Vec { + self.names.read().unwrap().keys().cloned().collect() + } +} diff --git a/crates/std/src/router.rs b/crates/std/src/router.rs new file mode 100644 index 0000000..c0d2f89 --- /dev/null +++ b/crates/std/src/router.rs @@ -0,0 +1,169 @@ +use std::marker::PhantomData; +use std::sync::Arc; + +use swactor::actor::{ActorAddress, ActorInterface, Ctx, Down, Message}; +use swactor::Error; + +use crate::supervisor::ActiveChild; +use crate::CtxMonitoring; + +/// Strategy for distributing messages across pool workers. +#[derive(Debug, Clone)] +pub enum RoutingStrategy { + /// Sequential round-robin distribution. + RoundRobin, + /// Random worker selection. + Random, + /// Send to all workers (message is cloned to each). + Broadcast, +} + +/// A router actor that manages a pool of identical workers and distributes +/// incoming messages across them according to a [`RoutingStrategy`]. +/// +/// Workers are spawned during `on_start`, monitored for failures, and +/// automatically replaced to maintain the target pool size. Meltdown +/// protection stops the router when total restarts exceed `max_restarts`. +/// +/// # Example +/// +/// ```ignore +/// let router = Router::new( +/// RoutingStrategy::RoundRobin, +/// 5, +/// |ctx| ctx.spawn(MyWorker::new()), +/// 10, +/// ); +/// let router_addr = rt.spawn(router)?; +/// rt.send_to(router_addr, WorkerMessage::DoWork(42))?; +/// ``` +pub struct Router { + strategy: RoutingStrategy, + pool_size: usize, + factory: Arc Result + Send + Sync>, + workers: Vec>, + rr_index: usize, + total_restarts: u32, + max_restarts: u32, + _marker: PhantomData, +} + +impl Router { + pub fn new( + strategy: RoutingStrategy, + pool_size: usize, + factory: impl Fn(&Ctx) -> Result + Send + Sync + 'static, + max_restarts: u32, + ) -> Self { + Self { + strategy, + pool_size, + factory: Arc::new(factory), + workers: (0..pool_size).map(|_| None).collect(), + rr_index: 0, + total_restarts: 0, + max_restarts, + _marker: PhantomData, + } + } + + fn start_worker(&mut self, ctx: &Ctx, idx: usize) -> Result<(), Error> { + let addr = (self.factory)(ctx)?; + let mref = ctx.monitor(addr); + self.workers[idx] = Some(ActiveChild { + addr, + _monitor_ref: mref, + }); + Ok(()) + } + + fn find_worker_idx(&self, addr: ActorAddress) -> Option { + self.workers + .iter() + .position(|w| w.as_ref().map_or(false, |ac| ac.addr == addr)) + } + + fn live_workers(&self) -> Vec { + self.workers + .iter() + .filter_map(|w| w.as_ref().map(|ac| ac.addr)) + .collect() + } + + fn select_one(&mut self) -> Option { + let live = self.live_workers(); + if live.is_empty() { + return None; + } + match self.strategy { + RoutingStrategy::RoundRobin => { + let idx = self.rr_index % live.len(); + self.rr_index = self.rr_index.wrapping_add(1); + Some(live[idx]) + } + RoutingStrategy::Random => { + let mut buf = [0u8; 8]; + getrandom::getrandom(&mut buf).expect("getrandom failed"); + let r = u64::from_ne_bytes(buf) as usize; + Some(live[r % live.len()]) + } + RoutingStrategy::Broadcast => None, // handled separately + } + } +} + +impl ActorInterface for Router { + type Incoming = M; + type Response = (); + + fn handle(&mut self, ctx: &Ctx, msg: M) { + match self.strategy { + RoutingStrategy::Broadcast => { + let live = self.live_workers(); + for addr in live { + let _ = ctx.send(addr, msg.clone()); + } + } + _ => { + if let Some(addr) = self.select_one() { + let _ = ctx.send(addr, msg); + } + } + } + } + + fn on_start(&mut self, ctx: &Ctx) { + for idx in 0..self.pool_size { + if let Err(e) = self.start_worker(ctx, idx) { + eprintln!("swactor: router failed to start worker {idx}: {e}"); + } + } + } + + fn on_stop(&mut self, ctx: &Ctx) { + for child in self.workers.iter().flatten() { + let _ = ctx.stop_actor(child.addr); + } + } + + fn handle_down(&mut self, ctx: &Ctx, down: Down) { + let Some(idx) = self.find_worker_idx(down.addr) else { + return; + }; + self.workers[idx] = None; + + self.total_restarts += 1; + if self.total_restarts > self.max_restarts { + eprintln!( + "swactor: router reached max restarts ({}), shutting down", + self.max_restarts + ); + ctx.stop_self(); + return; + } + + if let Err(e) = self.start_worker(ctx, idx) { + eprintln!("swactor: router failed to restart worker {idx}: {e}"); + } + } +} diff --git a/crates/std/src/runtime_ext.rs b/crates/std/src/runtime_ext.rs new file mode 100644 index 0000000..1f7ab67 --- /dev/null +++ b/crates/std/src/runtime_ext.rs @@ -0,0 +1,106 @@ +use swactor::actor::{ActorAddress, ActorInterface, Message}; +use swactor::runtime::Runtime; +use swactor::Error; + +use crate::StdExtension; + +fn get_ext(rt: &Runtime) -> &StdExtension { + rt.extension() + .expect("StdExtension not installed — use Runtime::with_extension()") + .as_any() + .downcast_ref::() + .expect("Extension is not StdExtension") +} + +/// Naming extension for [`Runtime`]. +/// +/// Provides `spawn_named`, `where_is`, `unregister`, and `registered_names` +/// via the [`StdExtension`] name registry. +pub trait RuntimeNaming { + /// Spawn an actor with a registered name, returning its address. + fn spawn_named(&self, name: impl Into, actor: A) -> Result; + + /// Look up an actor address by its registered name. + fn where_is(&self, name: &str) -> Option; + + /// Unregister a name. Returns the address it was bound to, or `None`. + fn unregister(&self, name: &str) -> Option; + + /// Return all currently registered actor names. + fn registered_names(&self) -> Vec; +} + +impl RuntimeNaming for Runtime { + fn spawn_named(&self, name: impl Into, actor: A) -> Result { + let name = name.into(); + let addr = self.spawn(actor)?; + if let Err(e) = get_ext(self).name_registry.register(name, addr) { + let _ = self.stop_actor(addr); + return Err(e); + } + Ok(addr) + } + + fn where_is(&self, name: &str) -> Option { + get_ext(self).name_registry.lookup(name) + } + + fn unregister(&self, name: &str) -> Option { + get_ext(self).name_registry.unregister(name) + } + + fn registered_names(&self) -> Vec { + get_ext(self).name_registry.registered_names() + } +} + +/// Group extension for [`Runtime`]. +/// +/// Provides `join_group`, `leave_group`, `publish_to`, `group_members`, +/// and `groups` via the [`StdExtension`] group registry. +pub trait RuntimeGroups { + /// Add an actor to a named group. The group is created if it doesn't exist. + fn join_group(&self, addr: ActorAddress, group: impl Into); + + /// Remove an actor from a named group. Empty groups are auto-deleted. + fn leave_group(&self, addr: ActorAddress, group: &str); + + /// Broadcast a message to all members of a named group. + /// Returns the number of messages successfully enqueued. + fn publish_to(&self, group: &str, msg: M) -> usize; + + /// Return all current members of a named group. + fn group_members(&self, group: &str) -> Vec; + + /// Return all active group names. + fn groups(&self) -> Vec; +} + +impl RuntimeGroups for Runtime { + fn join_group(&self, addr: ActorAddress, group: impl Into) { + get_ext(self).group_registry.join(group.into(), addr); + } + + fn leave_group(&self, addr: ActorAddress, group: &str) { + get_ext(self).group_registry.leave(group, &addr); + } + + fn publish_to(&self, group: &str, msg: M) -> usize { + let members = get_ext(self).group_registry.members(group); + let mut count = 0; + for member in &members { + if self.send_to(*member, msg.clone()).is_ok() { + count += 1; + } + } + count + } + + fn group_members(&self, group: &str) -> Vec { + get_ext(self).group_registry.members(group) + } + + fn groups(&self) -> Vec { + get_ext(self).group_registry.group_names() + } +} diff --git a/crates/std/src/supervisor.rs b/crates/std/src/supervisor.rs new file mode 100644 index 0000000..1d809ed --- /dev/null +++ b/crates/std/src/supervisor.rs @@ -0,0 +1,301 @@ +use std::sync::Arc; + +use swactor::actor::{ActorAddress, ActorInterface, Ctx, Down, MonitorRef, StopReason}; +use swactor::Error; + +use crate::CtxMonitoring; + +/// How a child should be restarted when it dies. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum RestartPolicy { + /// Always restart, regardless of stop reason. + Permanent, + /// Restart only on abnormal exit (Panicked). Normal stops are final. + Transient, + /// Never restart. The child is removed on any exit. + Temporary, +} + +/// Strategy for handling child failures. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum SupervisorStrategy { + /// Only restart the failed child. Other children are unaffected. + OneForOne, + /// Terminate all children and restart them all in spec order. + OneForAll, + /// Terminate children started after the failed child, then restart + /// the failed child and all terminated children in spec order. + RestForOne, +} + +/// Specification for a supervised child actor. +/// +/// The `start` closure is called with `&Ctx` and should spawn the child actor +/// (typically via `ctx.spawn()`). The supervisor monitors the returned address +/// and applies the restart policy when the child dies. +pub struct ChildSpec { + /// Unique identifier for this child. + pub id: String, + /// How to restart this child. + pub restart: RestartPolicy, + /// Factory to spawn the child. Called with `&Ctx`, returns the child's address. + pub start: Arc Result + Send + Sync>, +} + +impl ChildSpec { + pub fn new( + id: impl Into, + restart: RestartPolicy, + start: impl Fn(&Ctx) -> Result + Send + Sync + 'static, + ) -> Self { + Self { + id: id.into(), + restart, + start: Arc::new(start), + } + } +} + +/// Tracked state for an active child within a supervisor or router. +pub(crate) struct ActiveChild { + pub(crate) addr: ActorAddress, + pub(crate) _monitor_ref: MonitorRef, +} + +/// Internal phase for coordinating multi-child restart (OneForAll, RestForOne). +/// +/// In `Normal` phase, the supervisor processes Down messages and applies the strategy. +/// When a coordinated restart is needed, it transitions to `Stopping` (sends stop +/// signals, waits for Down confirmations) then restarts all affected children. +enum SupervisorPhase { + /// Normal operation — process Down messages and apply strategy. + Normal, + /// Waiting for children to confirm death before restarting. + Stopping { + /// Children we're still waiting for Down confirmation. + awaiting: Vec, + /// Spec indices to restart once all confirmations received. + restart_set: Vec, + }, +} + +/// A supervisor actor that manages child actors according to a restart strategy. +/// +/// Children are spawned during `on_start`. When a child dies, the supervisor +/// receives a [`Down`] notification via [`ActorInterface::handle_down`] and +/// applies the configured strategy and restart policy. +/// +/// # Strategies +/// +/// - **OneForOne**: Only the failed child is restarted. +/// - **OneForAll**: All children are stopped, then all restarted in spec order. +/// - **RestForOne**: The failed child and all children started after it are +/// stopped, then restarted in spec order. +/// +/// # Restart Intensity +/// +/// The supervisor tracks total restarts. When `total_restarts > max_restarts`, +/// the supervisor stops itself (meltdown protection), escalating the failure +/// to its own supervisor if one exists. +/// +/// # Example +/// +/// ```ignore +/// let sup = Supervisor::new( +/// SupervisorStrategy::OneForOne, +/// 5, // max 5 restarts before meltdown +/// vec![ +/// ChildSpec::new("worker", RestartPolicy::Permanent, |ctx| { +/// ctx.spawn(MyWorker::new()) +/// }), +/// ], +/// ); +/// let sup_addr = rt.spawn(sup)?; +/// ``` +pub struct Supervisor { + strategy: SupervisorStrategy, + max_restarts: u32, + specs: Vec, + children: Vec>, + total_restarts: u32, + phase: SupervisorPhase, +} + +impl Supervisor { + pub fn new( + strategy: SupervisorStrategy, + max_restarts: u32, + specs: Vec, + ) -> Self { + let children = (0..specs.len()).map(|_| None).collect(); + Self { + strategy, + max_restarts, + specs, + children, + total_restarts: 0, + phase: SupervisorPhase::Normal, + } + } + + fn start_child(&mut self, ctx: &Ctx, idx: usize) -> Result<(), Error> { + let addr = (self.specs[idx].start)(ctx)?; + let mref = ctx.monitor(addr); + self.children[idx] = Some(ActiveChild { + addr, + _monitor_ref: mref, + }); + Ok(()) + } + + fn find_child_idx(&self, addr: ActorAddress) -> Option { + self.children + .iter() + .position(|c| c.as_ref().map_or(false, |ac| ac.addr == addr)) + } + + /// Check meltdown intensity — returns true if we should stop. + fn check_intensity(&mut self) -> bool { + self.total_restarts += 1; + self.total_restarts > self.max_restarts + } + + /// Try to finish the coordinated restart: restart all children in `restart_set`. + fn finish_restart(&mut self, ctx: &Ctx) { + let restart_set = match &mut self.phase { + SupervisorPhase::Stopping { restart_set, .. } => { + std::mem::take(restart_set) + } + _ => return, + }; + self.phase = SupervisorPhase::Normal; + + for idx in restart_set { + if let Err(e) = self.start_child(ctx, idx) { + eprintln!( + "swactor: supervisor failed to restart child '{}': {}", + self.specs[idx].id, e + ); + } + } + } + + /// Begin a coordinated restart for the given spec indices. + /// Stops any living children in the set, then waits for their Down messages. + fn begin_coordinated_restart(&mut self, ctx: &Ctx, restart_indices: Vec) { + let mut awaiting = Vec::new(); + for &idx in &restart_indices { + if let Some(child) = self.children[idx].take() { + let _ = ctx.stop_actor(child.addr); + awaiting.push(child.addr); + } + } + + if awaiting.is_empty() { + // All children already dead — restart immediately. + for idx in &restart_indices { + if let Err(e) = self.start_child(ctx, *idx) { + eprintln!( + "swactor: supervisor failed to restart child '{}': {}", + self.specs[*idx].id, e + ); + } + } + } else { + self.phase = SupervisorPhase::Stopping { + awaiting, + restart_set: restart_indices, + }; + } + } +} + +impl ActorInterface for Supervisor { + type Incoming = (); + type Response = (); + + fn handle(&mut self, _ctx: &Ctx, _msg: ()) {} + + fn on_start(&mut self, ctx: &Ctx) { + for idx in 0..self.specs.len() { + if let Err(e) = self.start_child(ctx, idx) { + eprintln!( + "swactor: supervisor failed to start child '{}': {}", + self.specs[idx].id, e + ); + } + } + } + + fn on_stop(&mut self, ctx: &Ctx) { + for child in self.children.iter().flatten() { + let _ = ctx.stop_actor(child.addr); + } + } + + fn handle_down(&mut self, ctx: &Ctx, down: Down) { + // During coordinated restart: track Down confirmations. + if matches!(self.phase, SupervisorPhase::Stopping { .. }) { + // Clear from children tracking + if let Some(idx) = self.find_child_idx(down.addr) { + self.children[idx] = None; + } + // Remove from awaiting list + if let SupervisorPhase::Stopping { awaiting, .. } = &mut self.phase { + awaiting.retain(|a| *a != down.addr); + } + let done = matches!(&self.phase, + SupervisorPhase::Stopping { awaiting, .. } if awaiting.is_empty()); + if done { + self.finish_restart(ctx); + } + return; + } + + // Normal phase: handle child death. + let Some(idx) = self.find_child_idx(down.addr) else { + return; + }; + self.children[idx] = None; + + let should_restart = match self.specs[idx].restart { + RestartPolicy::Permanent => true, + RestartPolicy::Transient => down.reason == StopReason::Panicked, + RestartPolicy::Temporary => false, + }; + + if !should_restart { + return; + } + + if self.check_intensity() { + eprintln!( + "swactor: supervisor reached max restarts ({}), shutting down", + self.max_restarts + ); + ctx.stop_self(); + return; + } + + match self.strategy { + SupervisorStrategy::OneForOne => { + if let Err(e) = self.start_child(ctx, idx) { + eprintln!( + "swactor: supervisor failed to restart child '{}': {}", + self.specs[idx].id, e + ); + } + } + SupervisorStrategy::OneForAll => { + // Stop all other living children, then restart all in order. + let restart_indices: Vec = (0..self.specs.len()).collect(); + self.begin_coordinated_restart(ctx, restart_indices); + } + SupervisorStrategy::RestForOne => { + // Stop children after the failed one, then restart failed + rest. + let restart_indices: Vec = (idx..self.specs.len()).collect(); + self.begin_coordinated_restart(ctx, restart_indices); + } + } + } +} diff --git a/docs/development_history/CFUZZ_OVERVIEW.md b/docs/development_history/cfuzz/CFUZZ_OVERVIEW.md similarity index 100% rename from docs/development_history/CFUZZ_OVERVIEW.md rename to docs/development_history/cfuzz/CFUZZ_OVERVIEW.md diff --git a/docs/development_history/CYCLE_01_FAIRNESS.md b/docs/development_history/cfuzz/CYCLE_01_FAIRNESS.md similarity index 100% rename from docs/development_history/CYCLE_01_FAIRNESS.md rename to docs/development_history/cfuzz/CYCLE_01_FAIRNESS.md diff --git a/docs/development_history/CYCLE_02_STRESS_TESTS.md b/docs/development_history/cfuzz/CYCLE_02_STRESS_TESTS.md similarity index 100% rename from docs/development_history/CYCLE_02_STRESS_TESTS.md rename to docs/development_history/cfuzz/CYCLE_02_STRESS_TESTS.md diff --git 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a/docs/development_history/CYCLE_10_TIMERS.md b/docs/development_history/cfuzz/CYCLE_10_TIMERS.md similarity index 100% rename from docs/development_history/CYCLE_10_TIMERS.md rename to docs/development_history/cfuzz/CYCLE_10_TIMERS.md diff --git a/docs/development_history/CYCLE_11_PROPERTY_TESTING.md b/docs/development_history/cfuzz/CYCLE_11_PROPERTY_TESTING.md similarity index 100% rename from docs/development_history/CYCLE_11_PROPERTY_TESTING.md rename to docs/development_history/cfuzz/CYCLE_11_PROPERTY_TESTING.md diff --git a/docs/development_history/CYCLE_12_NAMED_REGISTRY.md b/docs/development_history/cfuzz/CYCLE_12_NAMED_REGISTRY.md similarity index 100% rename from docs/development_history/CYCLE_12_NAMED_REGISTRY.md rename to docs/development_history/cfuzz/CYCLE_12_NAMED_REGISTRY.md diff --git a/docs/development_history/CYCLE_13_MONITORING.md b/docs/development_history/cfuzz/CYCLE_13_MONITORING.md similarity index 100% rename from docs/development_history/CYCLE_13_MONITORING.md rename to docs/development_history/cfuzz/CYCLE_13_MONITORING.md diff --git a/docs/development_history/CYCLE_14_GROUPS.md b/docs/development_history/cfuzz/CYCLE_14_GROUPS.md similarity index 100% rename from docs/development_history/CYCLE_14_GROUPS.md rename to docs/development_history/cfuzz/CYCLE_14_GROUPS.md diff --git a/docs/development_history/CYCLE_15_ASK_PATTERN.md b/docs/development_history/cfuzz/CYCLE_15_ASK_PATTERN.md similarity index 100% rename from docs/development_history/CYCLE_15_ASK_PATTERN.md rename to docs/development_history/cfuzz/CYCLE_15_ASK_PATTERN.md diff --git a/docs/development_history/CYCLE_16_REGISTRY_BENCHMARKS.md b/docs/development_history/cfuzz/CYCLE_16_REGISTRY_BENCHMARKS.md similarity index 100% rename from docs/development_history/CYCLE_16_REGISTRY_BENCHMARKS.md rename to docs/development_history/cfuzz/CYCLE_16_REGISTRY_BENCHMARKS.md diff --git a/docs/development_history/CYCLE_17_SUPERVISION.md b/docs/development_history/cfuzz/CYCLE_17_SUPERVISION.md similarity index 100% rename from docs/development_history/CYCLE_17_SUPERVISION.md rename to docs/development_history/cfuzz/CYCLE_17_SUPERVISION.md diff --git a/docs/development_history/CYCLE_18_SUPERVISOR_STRATEGIES.md b/docs/development_history/cfuzz/CYCLE_18_SUPERVISOR_STRATEGIES.md similarity index 100% rename from docs/development_history/CYCLE_18_SUPERVISOR_STRATEGIES.md rename to docs/development_history/cfuzz/CYCLE_18_SUPERVISOR_STRATEGIES.md diff --git a/docs/development_history/CYCLE_19_ROUTER.md b/docs/development_history/cfuzz/CYCLE_19_ROUTER.md similarity index 100% rename from docs/development_history/CYCLE_19_ROUTER.md rename to docs/development_history/cfuzz/CYCLE_19_ROUTER.md diff --git a/fuzz/fuzz_targets/fuzz_runtime.rs b/fuzz/fuzz_targets/fuzz_runtime.rs index d156180..54349ee 100644 --- a/fuzz/fuzz_targets/fuzz_runtime.rs +++ b/fuzz/fuzz_targets/fuzz_runtime.rs @@ -173,14 +173,14 @@ impl ActorInterface for IntervalSchedulerActor { fn handle(&mut self, _ctx: &Ctx, _msg: FuzzMsg) {} } -/// Restartable echo: panics on value=0, otherwise echoes. -struct RestartableEchoActor; -impl ActorInterface for RestartableEchoActor { +/// Panicking echo: panics on value=0, otherwise echoes. +struct PanickingEchoActor; +impl ActorInterface for PanickingEchoActor { type Incoming = FuzzMsg; type Response = (); fn handle(&mut self, ctx: &Ctx, msg: FuzzMsg) { if msg.value == 0 { - panic!("fuzz: intentional panic for restart test"); + panic!("fuzz: intentional panic"); } if let Some(idx) = msg.reply_to_idx { let reply = FuzzMsg { value: msg.value, reply_to_idx: None }; @@ -252,8 +252,8 @@ enum RawAction { TickN { n: u8 }, /// Graceful stop an actor StopActor { actor_idx: u8 }, - /// Spawn a restartable echo actor (max_restarts = n) - SpawnRestartable { max_restarts: u8 }, + /// Spawn a panicking echo actor (panics on value=0) + SpawnPanicking, /// Schedule a one-shot timer from an actor to an inbox ScheduleTimer { delay: u8 }, /// Schedule an interval timer from an actor to an inbox @@ -813,17 +813,12 @@ impl FuzzState { self.log(format_args!("[STOP] {label}")); } } - RawAction::SpawnRestartable { max_restarts } => { - let restarts = (*max_restarts).min(5) as u32; - if let Ok(addr) = self.runtime.spawn_restartable( - RestartableEchoActor, - || RestartableEchoActor, - restarts, - ) { + RawAction::SpawnPanicking => { + if let Ok(addr) = self.runtime.spawn(PanickingEchoActor) { let id = self.actors.len(); self.actors.push((addr, ActorKind::Echo)); self.total_spawned += 1; - self.log(format_args!("[SPAWN] Restartable(max={restarts}) -> actor#{id}")); + self.log(format_args!("[SPAWN] PanickingEcho -> actor#{id}")); } } RawAction::ScheduleTimer { delay } => { diff --git a/src/actor.rs b/src/actor.rs index 3aa26b9..17b9504 100644 --- a/src/actor.rs +++ b/src/actor.rs @@ -1,6 +1,4 @@ use std::any::Any; -use std::marker::PhantomData; -use std::sync::Arc; use crate::Error; @@ -75,33 +73,11 @@ impl ActorAddress { /// The actor process as represented in the Runtime — thin wrapper around user state. pub struct Actor { inner: A, - /// Factory for creating fresh instances on restart. None = not restartable. - restart_factory: Option A + Send + Sync>>, - max_restarts: u32, - restart_count: u32, } impl Actor { pub fn new(inner: A) -> Self { - Self { - inner, - restart_factory: None, - max_restarts: 0, - restart_count: 0, - } - } - - pub fn new_restartable( - inner: A, - factory: Arc A + Send + Sync>, - max_restarts: u32, - ) -> Self { - Self { - inner, - restart_factory: Some(factory), - max_restarts, - restart_count: 0, - } + Self { inner } } } @@ -111,12 +87,6 @@ impl Actor { pub trait AnyActor: Send { fn handle_any(&mut self, ctx: &Ctx, msg: Box) -> Option<&'static str>; - /// Attempt to create a fresh instance for restart after panic. - /// Returns `None` if restart is not supported or restart limit exceeded. - fn try_restart(&self) -> Option> { - None - } - /// Called once after spawn, before first message. See [`ActorInterface::on_start`]. fn on_start(&mut self, _ctx: &Ctx) {} @@ -145,20 +115,6 @@ where } } - fn try_restart(&self) -> Option> { - let factory = self.restart_factory.as_ref()?; - if self.restart_count >= self.max_restarts { - return None; - } - let fresh = factory(); - Some(Box::new(Actor { - inner: fresh, - restart_factory: Some(factory.clone()), - max_restarts: self.max_restarts, - restart_count: self.restart_count + 1, - })) - } - fn on_start(&mut self, ctx: &Ctx) { self.inner.on_start(ctx); } @@ -174,6 +130,13 @@ where #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub struct MonitorRef(pub(crate) u64); +impl MonitorRef { + /// Construct a MonitorRef from a raw id. Used by extension crates. + pub fn from_raw(id: u64) -> Self { + Self(id) + } +} + /// Reason an actor was removed from the runtime. #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub enum StopReason { @@ -228,6 +191,10 @@ pub(crate) enum TimerRequest { } /// Object-safe inner trait for sending type-erased messages. +/// +/// Minimal core interface: send, spawn, stop, timers, and extension access. +/// Registry methods (naming, monitoring, groups) are provided by extension +/// traits in `swactor-std`. #[allow(private_interfaces)] pub trait ContextInner { fn send_any(&self, addr: ActorAddress, msg: Box) -> Result<(), Error>; @@ -236,26 +203,15 @@ pub trait ContextInner { fn request_stop(&self, addr: ActorAddress); /// Schedule a timer (one-shot or interval). fn schedule_timer(&self, request: TimerRequest); - /// Look up an actor address by registered name. - fn where_is(&self, name: &str) -> Option; - /// Register a name → address mapping. Returns `Err` if the name is taken. - fn register_name(&self, name: String, addr: ActorAddress) -> Result<(), Error>; - /// Subscribe to death notifications for `target`. Returns a MonitorRef for cancellation. - fn monitor(&self, watcher: ActorAddress, target: ActorAddress) -> MonitorRef; - /// Cancel a monitor subscription. - fn demonitor(&self, mref: MonitorRef); - /// Add actor to a named group. - fn join_group(&self, actor: ActorAddress, group: String); - /// Remove actor from a named group. - fn leave_group(&self, actor: ActorAddress, group: &str); - /// Return all members of a named group. - fn group_members(&self, group: &str) -> Vec; + /// Access the runtime extension (if installed). + fn extension(&self) -> Option<&dyn crate::extension::RuntimeExtension>; } /// Actor syscall interface — passed to `ActorInterface::handle()`. /// /// Wraps a `&dyn ContextInner` to solve the object-safety problem while -/// providing a typed public API. +/// providing a typed public API. Registry methods (naming, monitoring, groups) +/// are provided by extension traits in `swactor-std`. pub struct Ctx<'a> { inner: &'a dyn ContextInner, self_addr: ActorAddress, @@ -275,6 +231,11 @@ impl<'a> Ctx<'a> { self.self_addr } + /// Access the runtime extension (if installed). + pub fn extension(&self) -> Option<&dyn crate::extension::RuntimeExtension> { + self.inner.extension() + } + /// Send a typed message to an actor address. pub fn send(&self, addr: ActorAddress, msg: M) -> Result<(), Error> { self.inner.send_any(addr, Box::new(msg)) @@ -329,560 +290,4 @@ impl<'a> Ctx<'a> { period, }); } - - /// Look up an actor address by its registered name. - /// - /// Returns `None` if no actor is registered under that name. - pub fn where_is(&self, name: &str) -> Option { - self.inner.where_is(name) - } - - /// Spawn a new actor with a registered name. - /// - /// The name is reserved immediately (before the actor starts processing). - /// Returns `Err` if the name is already taken. - pub fn spawn_named( - &self, - name: impl Into, - actor: A, - ) -> Result { - let addr = ActorAddress::new_random(); - self.inner.register_name(name.into(), addr)?; - let boxed: Box = Box::new(Actor::new(actor)); - self.inner.spawn_any(addr, boxed); - Ok(addr) - } - - /// Subscribe to death notifications for `target`. - /// - /// When `target` dies (stop or panic), a [`Down`] message is delivered to - /// this actor's mailbox as a normal message. Multiple monitors of the same - /// target create independent subscriptions. - pub fn monitor(&self, target: ActorAddress) -> MonitorRef { - self.inner.monitor(self.self_addr, target) - } - - /// Cancel a previously created monitor subscription. - pub fn demonitor(&self, mref: MonitorRef) { - self.inner.demonitor(mref); - } - - /// Join a named group. The group is created if it doesn't exist. - /// - /// An actor can be a member of multiple groups simultaneously. - pub fn join_group(&self, group: impl Into) { - self.inner.join_group(self.self_addr, group.into()); - } - - /// Leave a named group. Empty groups are automatically deleted. - pub fn leave_group(&self, group: &str) { - self.inner.leave_group(self.self_addr, group); - } - - /// Broadcast a message to all members of a named group. - /// - /// The message is cloned for each recipient. Returns the number of - /// messages successfully enqueued. - pub fn publish(&self, group: &str, msg: M) -> usize { - let members = self.inner.group_members(group); - let mut count = 0; - for member in &members { - if self.inner.send_any(*member, Box::new(msg.clone())).is_ok() { - count += 1; - } - } - count - } - - /// Return all current members of a named group. - pub fn group_members(&self, group: &str) -> Vec { - self.inner.group_members(group) - } - - /// Spawn a restartable actor. On panic, recreated via `factory` up to - /// `max_restarts` times before permanent poisoning. - pub fn spawn_restartable( - &self, - actor: A, - factory: F, - max_restarts: u32, - ) -> Result - where - A: ActorInterface, - F: Fn() -> A + Send + Sync + 'static, - { - let addr = ActorAddress::new_random(); - let boxed: Box = Box::new(Actor::new_restartable( - actor, - Arc::new(factory), - max_restarts, - )); - self.inner.spawn_any(addr, boxed); - Ok(addr) - } -} - -// ─── Supervision ──────────────────────────────────────────────────────────── - -/// How a child should be restarted when it dies. -#[derive(Debug, Clone, Copy, PartialEq, Eq)] -pub enum RestartPolicy { - /// Always restart, regardless of stop reason. - Permanent, - /// Restart only on abnormal exit (Panicked). Normal stops are final. - Transient, - /// Never restart. The child is removed on any exit. - Temporary, -} - -/// Strategy for handling child failures. -#[derive(Debug, Clone, Copy, PartialEq, Eq)] -pub enum SupervisorStrategy { - /// Only restart the failed child. Other children are unaffected. - OneForOne, - /// Terminate all children and restart them all in spec order. - OneForAll, - /// Terminate children started after the failed child, then restart - /// the failed child and all terminated children in spec order. - RestForOne, -} - -/// Specification for a supervised child actor. -/// -/// The `start` closure is called with `&Ctx` and should spawn the child actor -/// (typically via `ctx.spawn()`). The supervisor monitors the returned address -/// and applies the restart policy when the child dies. -/// -/// Children should be spawned with `ctx.spawn()`, not `ctx.spawn_restartable()`, -/// since the supervisor itself manages restarts. -pub struct ChildSpec { - /// Unique identifier for this child. - pub id: String, - /// How to restart this child. - pub restart: RestartPolicy, - /// Factory to spawn the child. Called with `&Ctx`, returns the child's address. - pub start: Arc Result + Send + Sync>, -} - -impl ChildSpec { - pub fn new( - id: impl Into, - restart: RestartPolicy, - start: impl Fn(&Ctx) -> Result + Send + Sync + 'static, - ) -> Self { - Self { - id: id.into(), - restart, - start: Arc::new(start), - } - } -} - -/// Tracked state for an active child within a supervisor. -struct ActiveChild { - addr: ActorAddress, - _monitor_ref: MonitorRef, -} - -/// Internal phase for coordinating multi-child restart (OneForAll, RestForOne). -/// -/// In `Normal` phase, the supervisor processes Down messages and applies the strategy. -/// When a coordinated restart is needed, it transitions to `Stopping` (sends stop -/// signals, waits for Down confirmations) then restarts all affected children. -enum SupervisorPhase { - /// Normal operation — process Down messages and apply strategy. - Normal, - /// Waiting for children to confirm death before restarting. - Stopping { - /// Children we're still waiting for Down confirmation. - awaiting: Vec, - /// Spec indices to restart once all confirmations received. - restart_set: Vec, - }, -} - -/// A supervisor actor that manages child actors according to a restart strategy. -/// -/// Children are spawned during `on_start`. When a child dies, the supervisor -/// receives a [`Down`] notification via [`ActorInterface::handle_down`] and -/// applies the configured strategy and restart policy. -/// -/// # Strategies -/// -/// - **OneForOne**: Only the failed child is restarted. -/// - **OneForAll**: All children are stopped, then all restarted in spec order. -/// - **RestForOne**: The failed child and all children started after it are -/// stopped, then restarted in spec order. -/// -/// # Restart Intensity -/// -/// The supervisor tracks total restarts. When `total_restarts > max_restarts`, -/// the supervisor stops itself (meltdown protection), escalating the failure -/// to its own supervisor if one exists. -/// -/// # Example -/// -/// ```ignore -/// let sup = Supervisor::new( -/// SupervisorStrategy::OneForOne, -/// 5, // max 5 restarts before meltdown -/// vec![ -/// ChildSpec::new("worker", RestartPolicy::Permanent, |ctx| { -/// ctx.spawn(MyWorker::new()) -/// }), -/// ], -/// ); -/// let sup_addr = rt.spawn(sup)?; -/// ``` -pub struct Supervisor { - strategy: SupervisorStrategy, - max_restarts: u32, - specs: Vec, - children: Vec>, - total_restarts: u32, - phase: SupervisorPhase, -} - -impl Supervisor { - pub fn new( - strategy: SupervisorStrategy, - max_restarts: u32, - specs: Vec, - ) -> Self { - let children = (0..specs.len()).map(|_| None).collect(); - Self { - strategy, - max_restarts, - specs, - children, - total_restarts: 0, - phase: SupervisorPhase::Normal, - } - } - - fn start_child(&mut self, ctx: &Ctx, idx: usize) -> Result<(), Error> { - let addr = (self.specs[idx].start)(ctx)?; - let mref = ctx.monitor(addr); - self.children[idx] = Some(ActiveChild { - addr, - _monitor_ref: mref, - }); - Ok(()) - } - - fn find_child_idx(&self, addr: ActorAddress) -> Option { - self.children - .iter() - .position(|c| c.as_ref().map_or(false, |ac| ac.addr == addr)) - } - - /// Check meltdown intensity — returns true if we should stop. - fn check_intensity(&mut self) -> bool { - self.total_restarts += 1; - self.total_restarts > self.max_restarts - } - - /// Try to finish the coordinated restart: restart all children in `restart_set`. - fn finish_restart(&mut self, ctx: &Ctx) { - let restart_set = match &mut self.phase { - SupervisorPhase::Stopping { restart_set, .. } => { - std::mem::take(restart_set) - } - _ => return, - }; - self.phase = SupervisorPhase::Normal; - - for idx in restart_set { - if let Err(e) = self.start_child(ctx, idx) { - eprintln!( - "swactor: supervisor failed to restart child '{}': {}", - self.specs[idx].id, e - ); - } - } - } - - /// Begin a coordinated restart for the given spec indices. - /// Stops any living children in the set, then waits for their Down messages. - fn begin_coordinated_restart(&mut self, ctx: &Ctx, restart_indices: Vec) { - let mut awaiting = Vec::new(); - for &idx in &restart_indices { - if let Some(child) = self.children[idx].take() { - let _ = ctx.stop_actor(child.addr); - awaiting.push(child.addr); - } - } - - if awaiting.is_empty() { - // All children already dead — restart immediately. - for idx in &restart_indices { - if let Err(e) = self.start_child(ctx, *idx) { - eprintln!( - "swactor: supervisor failed to restart child '{}': {}", - self.specs[*idx].id, e - ); - } - } - } else { - self.phase = SupervisorPhase::Stopping { - awaiting, - restart_set: restart_indices, - }; - } - } -} - -impl ActorInterface for Supervisor { - type Incoming = (); - type Response = (); - - fn handle(&mut self, _ctx: &Ctx, _msg: ()) {} - - fn on_start(&mut self, ctx: &Ctx) { - for idx in 0..self.specs.len() { - if let Err(e) = self.start_child(ctx, idx) { - eprintln!( - "swactor: supervisor failed to start child '{}': {}", - self.specs[idx].id, e - ); - } - } - } - - fn on_stop(&mut self, ctx: &Ctx) { - for child in self.children.iter().flatten() { - let _ = ctx.stop_actor(child.addr); - } - } - - fn handle_down(&mut self, ctx: &Ctx, down: Down) { - // During coordinated restart: track Down confirmations. - if matches!(self.phase, SupervisorPhase::Stopping { .. }) { - // Clear from children tracking - if let Some(idx) = self.find_child_idx(down.addr) { - self.children[idx] = None; - } - // Remove from awaiting list - if let SupervisorPhase::Stopping { awaiting, .. } = &mut self.phase { - awaiting.retain(|a| *a != down.addr); - } - let done = matches!(&self.phase, - SupervisorPhase::Stopping { awaiting, .. } if awaiting.is_empty()); - if done { - self.finish_restart(ctx); - } - return; - } - - // Normal phase: handle child death. - let Some(idx) = self.find_child_idx(down.addr) else { - return; - }; - self.children[idx] = None; - - let should_restart = match self.specs[idx].restart { - RestartPolicy::Permanent => true, - RestartPolicy::Transient => down.reason == StopReason::Panicked, - RestartPolicy::Temporary => false, - }; - - if !should_restart { - return; - } - - if self.check_intensity() { - eprintln!( - "swactor: supervisor reached max restarts ({}), shutting down", - self.max_restarts - ); - ctx.stop_self(); - return; - } - - match self.strategy { - SupervisorStrategy::OneForOne => { - if let Err(e) = self.start_child(ctx, idx) { - eprintln!( - "swactor: supervisor failed to restart child '{}': {}", - self.specs[idx].id, e - ); - } - } - SupervisorStrategy::OneForAll => { - // Stop all other living children, then restart all in order. - let restart_indices: Vec = (0..self.specs.len()).collect(); - self.begin_coordinated_restart(ctx, restart_indices); - } - SupervisorStrategy::RestForOne => { - // Stop children after the failed one, then restart failed + rest. - let restart_indices: Vec = (idx..self.specs.len()).collect(); - self.begin_coordinated_restart(ctx, restart_indices); - } - } - } -} - -// --------------------------------------------------------------------------- -// Router — pool of identical workers with configurable routing strategy -// --------------------------------------------------------------------------- - -/// Strategy for distributing messages across pool workers. -#[derive(Debug, Clone)] -pub enum RoutingStrategy { - /// Sequential round-robin distribution. - RoundRobin, - /// Random worker selection. - Random, - /// Send to all workers (message is cloned to each). - Broadcast, -} - -/// A router actor that manages a pool of identical workers and distributes -/// incoming messages across them according to a [`RoutingStrategy`]. -/// -/// Workers are spawned during `on_start`, monitored for failures, and -/// automatically replaced to maintain the target pool size. Meltdown -/// protection stops the router when total restarts exceed `max_restarts`. -/// -/// # Example -/// -/// ```ignore -/// let router = Router::new( -/// RoutingStrategy::RoundRobin, -/// 5, -/// |ctx| ctx.spawn(MyWorker::new()), -/// 10, -/// ); -/// let router_addr = rt.spawn(router)?; -/// rt.send_to(router_addr, WorkerMessage::DoWork(42))?; -/// ``` -pub struct Router { - strategy: RoutingStrategy, - pool_size: usize, - factory: Arc Result + Send + Sync>, - workers: Vec>, - rr_index: usize, - total_restarts: u32, - max_restarts: u32, - _marker: PhantomData, -} - -impl Router { - pub fn new( - strategy: RoutingStrategy, - pool_size: usize, - factory: impl Fn(&Ctx) -> Result + Send + Sync + 'static, - max_restarts: u32, - ) -> Self { - Self { - strategy, - pool_size, - factory: Arc::new(factory), - workers: (0..pool_size).map(|_| None).collect(), - rr_index: 0, - total_restarts: 0, - max_restarts, - _marker: PhantomData, - } - } - - fn start_worker(&mut self, ctx: &Ctx, idx: usize) -> Result<(), Error> { - let addr = (self.factory)(ctx)?; - let mref = ctx.monitor(addr); - self.workers[idx] = Some(ActiveChild { - addr, - _monitor_ref: mref, - }); - Ok(()) - } - - fn find_worker_idx(&self, addr: ActorAddress) -> Option { - self.workers - .iter() - .position(|w| w.as_ref().map_or(false, |ac| ac.addr == addr)) - } - - fn live_workers(&self) -> Vec { - self.workers - .iter() - .filter_map(|w| w.as_ref().map(|ac| ac.addr)) - .collect() - } - - fn select_one(&mut self) -> Option { - let live = self.live_workers(); - if live.is_empty() { - return None; - } - match self.strategy { - RoutingStrategy::RoundRobin => { - let idx = self.rr_index % live.len(); - self.rr_index = self.rr_index.wrapping_add(1); - Some(live[idx]) - } - RoutingStrategy::Random => { - let mut buf = [0u8; 8]; - crate::get_random(&mut buf); - let r = u64::from_ne_bytes(buf) as usize; - Some(live[r % live.len()]) - } - RoutingStrategy::Broadcast => None, // handled separately - } - } -} - -impl ActorInterface for Router { - type Incoming = M; - type Response = (); - - fn handle(&mut self, ctx: &Ctx, msg: M) { - match self.strategy { - RoutingStrategy::Broadcast => { - let live = self.live_workers(); - for addr in live { - let _ = ctx.send(addr, msg.clone()); - } - } - _ => { - if let Some(addr) = self.select_one() { - let _ = ctx.send(addr, msg); - } - } - } - } - - fn on_start(&mut self, ctx: &Ctx) { - for idx in 0..self.pool_size { - if let Err(e) = self.start_worker(ctx, idx) { - eprintln!("swactor: router failed to start worker {idx}: {e}"); - } - } - } - - fn on_stop(&mut self, ctx: &Ctx) { - for child in self.workers.iter().flatten() { - let _ = ctx.stop_actor(child.addr); - } - } - - fn handle_down(&mut self, ctx: &Ctx, down: Down) { - let Some(idx) = self.find_worker_idx(down.addr) else { - return; - }; - self.workers[idx] = None; - - self.total_restarts += 1; - if self.total_restarts > self.max_restarts { - eprintln!( - "swactor: router reached max restarts ({}), shutting down", - self.max_restarts - ); - ctx.stop_self(); - return; - } - - if let Err(e) = self.start_worker(ctx, idx) { - eprintln!("swactor: router failed to restart worker {idx}: {e}"); - } - } } diff --git a/src/channel.rs b/src/channel.rs index 4860704..38f6c3d 100644 --- a/src/channel.rs +++ b/src/channel.rs @@ -1,4 +1,3 @@ - use std::sync::Arc; use crossbeam_queue::{ArrayQueue, SegQueue}; diff --git a/src/delivery.rs b/src/delivery.rs index 0e9f3be..b1f3aeb 100644 --- a/src/delivery.rs +++ b/src/delivery.rs @@ -1,11 +1,11 @@ use std::any::Any; use std::collections::{HashMap, HashSet}; use std::hash::{BuildHasher, Hasher}; -use std::sync::atomic::{AtomicU64, AtomicUsize, Ordering}; +use std::sync::atomic::{AtomicUsize, Ordering}; use std::sync::{Arc, OnceLock, RwLock}; use std::thread::Thread; -use crate::actor::{ActorAddress, AnyActor, Message, MonitorRef}; +use crate::actor::{ActorAddress, AnyActor, Message}; use crate::channel::Sender; use crate::config::RuntimeConfig; use crate::stats::WorkerStats; @@ -21,7 +21,7 @@ use crate::Error; /// /// This is safe because the input is already random (uniform distribution), /// so additional mixing would be redundant. -pub(crate) struct AddrHasher(u64); +pub struct AddrHasher(u64); impl Hasher for AddrHasher { #[inline] @@ -42,7 +42,7 @@ impl Hasher for AddrHasher { /// BuildHasher for creating AddrHasher instances. #[derive(Default, Clone)] -pub(crate) struct AddrBuildHasher; +pub struct AddrBuildHasher; impl BuildHasher for AddrBuildHasher { type Hasher = AddrHasher; @@ -55,10 +55,10 @@ impl BuildHasher for AddrBuildHasher { /// HashMap optimized for ActorAddress keys. /// Uses identity hashing since ActorAddress bytes are already random. -pub(crate) type AddrMap = HashMap; +pub type AddrMap = HashMap; /// HashSet optimized for ActorAddress keys. -pub(crate) type AddrSet = HashSet; +pub type AddrSet = HashSet; // ─── Address Map Types ─────────────────────────────────────────────────────── @@ -239,9 +239,7 @@ pub(crate) struct TickContext<'a> { pub(crate) placement: &'a Placement, pub(crate) inbox_registry: &'a InboxRegistry, pub(crate) config: &'a RuntimeConfig, - pub(crate) name_registry: &'a NameRegistry, - pub(crate) monitor_registry: &'a MonitorRegistry, - pub(crate) group_registry: &'a GroupRegistry, + pub(crate) extension: Option<&'a dyn crate::extension::RuntimeExtension>, pub(crate) stats_hook: Option<&'a dyn crate::stats::StatsHook>, /// Thread handles for waking parked workers on cross-worker sends. pub(crate) worker_threads: &'a [OnceLock], @@ -251,216 +249,6 @@ pub(crate) struct TickContext<'a> { pub(crate) transport_router: Option<&'a crate::transport::TransportRouter>, } -// ─── Name Registry ────────────────────────────────────────────────────────── - -/// Named actor registry — maps human-readable names to actor addresses. -/// -/// `RwLock` — same pattern as `AddressMap`. Write-rare (spawn/death), -/// read-often (lookup). A reverse map enables O(1) cleanup on actor death. -pub(crate) struct NameRegistry { - names: RwLock>, - reverse: RwLock>, -} - -impl NameRegistry { - pub fn new() -> Self { - Self { - names: RwLock::new(HashMap::new()), - reverse: RwLock::new(HashMap::with_hasher(AddrBuildHasher)), - } - } - - /// Register a name → address mapping. Returns `Err` if the name is already taken. - pub fn register(&self, name: String, addr: ActorAddress) -> Result<(), crate::Error> { - let mut names = self.names.write().unwrap(); - if names.contains_key(&name) { - return Err(crate::Error::from("Name already registered")); - } - names.insert(name.clone(), addr); - drop(names); - self.reverse.write().unwrap().insert(addr, name); - Ok(()) - } - - /// Look up an actor address by name. - pub fn lookup(&self, name: &str) -> Option { - self.names.read().unwrap().get(name).copied() - } - - /// Unregister a name, returning the address it was bound to. - pub fn unregister(&self, name: &str) -> Option { - let addr = self.names.write().unwrap().remove(name)?; - self.reverse.write().unwrap().remove(&addr); - Some(addr) - } - - /// Remove a name by address (called on actor death for auto-cleanup). - pub fn unregister_by_addr(&self, addr: &ActorAddress) { - if let Some(name) = self.reverse.write().unwrap().remove(addr) { - self.names.write().unwrap().remove(&name); - } - } - - /// Return all registered names. - pub fn registered_names(&self) -> Vec { - self.names.read().unwrap().keys().cloned().collect() - } -} - -// ─── Monitor Registry ──────────────────────────────────────────────────────── - -/// Tracks monitor subscriptions: watched actor → list of (MonitorRef, watcher address). -/// -/// Write-rare (monitor/demonitor/death), read at cleanup time. -pub(crate) struct MonitorRegistry { - /// watched_addr → [(mref, watcher_addr)] - monitors: RwLock>>, - /// mref → watched_addr (for O(1) demonitor) - ref_to_target: RwLock>, - next_ref: AtomicU64, -} - -impl MonitorRegistry { - pub fn new() -> Self { - Self { - monitors: RwLock::new(HashMap::with_hasher(AddrBuildHasher)), - ref_to_target: RwLock::new(HashMap::new()), - next_ref: AtomicU64::new(1), - } - } - - /// Register a monitor: `watcher` wants to know when `target` dies. - pub fn register(&self, watcher: ActorAddress, target: ActorAddress) -> MonitorRef { - let id = self.next_ref.fetch_add(1, Ordering::Relaxed); - let mref = MonitorRef(id); - self.monitors.write().unwrap() - .entry(target) - .or_default() - .push((mref, watcher)); - self.ref_to_target.write().unwrap().insert(mref, target); - mref - } - - /// Cancel a monitor by its ref. - pub fn deregister(&self, mref: MonitorRef) { - if let Some(target) = self.ref_to_target.write().unwrap().remove(&mref) { - let mut monitors = self.monitors.write().unwrap(); - if let Some(watchers) = monitors.get_mut(&target) { - watchers.retain(|(r, _)| *r != mref); - if watchers.is_empty() { - monitors.remove(&target); - } - } - } - } - - /// Remove and return all monitors for a dead actor. - pub fn take_monitors(&self, target: &ActorAddress) -> Vec<(MonitorRef, ActorAddress)> { - let watchers = self.monitors.write().unwrap().remove(target).unwrap_or_default(); - let mut ref_map = self.ref_to_target.write().unwrap(); - for (mref, _) in &watchers { - ref_map.remove(mref); - } - watchers - } - - /// Remove all monitor subscriptions where `addr` is the watcher (dead watcher cleanup). - pub fn remove_watcher(&self, addr: &ActorAddress) { - let mut monitors = self.monitors.write().unwrap(); - let mut ref_map = self.ref_to_target.write().unwrap(); - // Iterate all targets and remove entries where this addr is the watcher - monitors.retain(|_target, watchers| { - watchers.retain(|(mref, watcher)| { - if watcher == addr { - ref_map.remove(mref); - false - } else { - true - } - }); - !watchers.is_empty() - }); - } -} - -// ─── Group Registry ───────────────────────────────────────────────────────── - -/// Actor groups (pub-sub). Actors join/leave named groups; messages can be -/// broadcast to all members of a group. -/// -/// Groups are created lazily on first join and removed when empty. -pub(crate) struct GroupRegistry { - /// group_name → set of member addresses - groups: RwLock>, - /// actor_addr → set of group names (reverse map for O(G) cleanup on death) - memberships: RwLock>>, -} - -impl GroupRegistry { - pub fn new() -> Self { - Self { - groups: RwLock::new(HashMap::new()), - memberships: RwLock::new(HashMap::with_hasher(AddrBuildHasher)), - } - } - - /// Add an actor to a named group. Group is created if it doesn't exist. - pub fn join(&self, group: String, addr: ActorAddress) { - self.groups.write().unwrap() - .entry(group.clone()) - .or_insert_with(|| HashSet::with_hasher(AddrBuildHasher)) - .insert(addr); - self.memberships.write().unwrap() - .entry(addr) - .or_default() - .insert(group); - } - - /// Remove an actor from a named group. Empty groups are auto-deleted. - pub fn leave(&self, group: &str, addr: &ActorAddress) { - let mut groups = self.groups.write().unwrap(); - if let Some(members) = groups.get_mut(group) { - members.remove(addr); - if members.is_empty() { - groups.remove(group); - } - } - drop(groups); - if let Some(membership) = self.memberships.write().unwrap().get_mut(addr) { - membership.remove(group); - } - } - - /// Return all members of a group. - pub fn members(&self, group: &str) -> Vec { - self.groups.read().unwrap() - .get(group) - .map(|s| s.iter().copied().collect()) - .unwrap_or_default() - } - - /// Remove a dead actor from all its groups. - pub fn cleanup(&self, addr: &ActorAddress) { - let group_names = self.memberships.write().unwrap().remove(addr); - if let Some(names) = group_names { - let mut groups = self.groups.write().unwrap(); - for name in names { - if let Some(members) = groups.get_mut(&name) { - members.remove(addr); - if members.is_empty() { - groups.remove(&name); - } - } - } - } - } - - /// Return all active group names. - pub fn group_names(&self) -> Vec { - self.groups.read().unwrap().keys().cloned().collect() - } -} - impl<'a> TickContext<'a> { /// Route a message whose destination is not in the local address map. /// Tries inbox registry, then remote transport, then falls back to inbox error. diff --git a/src/extension.rs b/src/extension.rs new file mode 100644 index 0000000..7028bd2 --- /dev/null +++ b/src/extension.rs @@ -0,0 +1,28 @@ +use std::any::Any; + +use crate::actor::{ActorAddress, StopReason}; + +/// Extension hook for runtime lifecycle events. +/// +/// Stored as `Arc` in the Runtime. Workers access it +/// via TickContext. Ctx methods that need registry access downcast to the +/// concrete type via `as_any()`. +/// +/// Core calls these methods at appropriate tick phases: +/// - `on_actor_death`: called during phase 7 (cleanup_dead) with newly dead actors +/// - `cleanup_dead`: called during phase 7 to clean up extension state +pub trait RuntimeExtension: Send + Sync { + /// Called during phase 7 (cleanup_dead) for each dead actor. + /// Returns (destination, message) pairs for death notifications. + /// The core delivers these through normal routing (pending_local or transfer queue). + fn on_actor_death( + &self, + dead: &[(ActorAddress, StopReason)], + ) -> Vec<(ActorAddress, Box)>; + + /// Clean up extension state for dead actors (names, groups, monitors). + fn cleanup_dead(&self, dead: &[ActorAddress]); + + /// Downcast support for Ctx extension traits. + fn as_any(&self) -> &dyn Any; +} diff --git a/src/lib.rs b/src/lib.rs index 06642fc..146ff90 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,10 +1,13 @@ pub mod actor; +pub mod extension; pub mod worker; pub(crate) mod channel; pub(crate) mod error; pub use error::Error; +// Re-export identity hashing types for ActorAddress-keyed collections. +pub use delivery::{AddrBuildHasher, AddrMap, AddrSet}; pub mod config; pub(crate) mod delivery; diff --git a/src/runtime.rs b/src/runtime.rs index 6f0ad7c..815e051 100644 --- a/src/runtime.rs +++ b/src/runtime.rs @@ -9,7 +9,8 @@ use crate::actor::{Actor, ActorAddress, ActorInterface, AnyActor, Message, StopS use crate::channel::{Receiver, Sender}; // Re-export config types so existing code using `runtime::RuntimeConfig` still works pub use crate::config::{BackoffPolicy, MailboxOverflow, RuntimeConfig}; -use crate::delivery::{AddressMap, Envelope, GroupRegistry, InboxRegistry, MonitorRegistry, NameRegistry, Placement, TickContext, WorkerId}; +use crate::delivery::{AddressMap, Envelope, InboxRegistry, Placement, TickContext, WorkerId}; +use crate::extension::RuntimeExtension; use crate::stats::{StatsHook, WorkerStats}; // Re-export stats types so existing code using `runtime::*` still works pub use crate::stats::{RuntimeStats, WorkerInfo}; @@ -95,9 +96,7 @@ pub struct Runtime { config: RuntimeConfig, address_map: Arc, inbox_registry: Arc, - name_registry: Arc, - monitor_registry: Arc, - group_registry: Arc, + extension: Option>, transfer_txs: Vec>, spawn_txs: Vec)>>, placement: Placement, @@ -155,9 +154,6 @@ impl Runtime { let address_map = Arc::new(AddressMap::with_capacity(config.max_actors)); let inbox_registry = Arc::new(InboxRegistry::new()); - let name_registry = Arc::new(NameRegistry::new()); - let monitor_registry = Arc::new(MonitorRegistry::new()); - let group_registry = Arc::new(GroupRegistry::new()); let mut transfer_txs = Vec::with_capacity(num_workers); let mut spawn_txs = Vec::with_capacity(num_workers); @@ -195,9 +191,7 @@ impl Runtime { config, address_map, inbox_registry, - name_registry, - monitor_registry, - group_registry, + extension: None, transfer_txs, spawn_txs, placement, @@ -242,96 +236,18 @@ impl Runtime { Ok(addr) } - /// Spawn a restartable actor. On panic, the actor is recreated using `factory` - /// up to `max_restarts` times before being permanently poisoned. - /// The mailbox is cleared on each restart — the new instance starts fresh. - pub fn spawn_restartable( - &self, - actor: A, - factory: F, - max_restarts: u32, - ) -> Result - where - A: ActorInterface, - F: Fn() -> A + Send + Sync + 'static, - { - let addr = ActorAddress::new_random(); - let worker_id = self.placement.next_worker(); - self.address_map.insert(addr, worker_id); - let boxed: Box = Box::new(Actor::new_restartable( - actor, - std::sync::Arc::new(factory), - max_restarts, - )); - self.spawn_txs[worker_id.as_usize()] - .send((addr, boxed)); - Ok(addr) - } - - /// Spawn an actor with a registered name, returns its address. + /// Install a runtime extension. Extensions provide higher-level features + /// (naming, monitoring, groups) via lifecycle hooks. /// - /// The name is reserved immediately. Returns `Err` if the name is already taken. - pub fn spawn_named( - &self, - name: impl Into, - actor: A, - ) -> Result { - let addr = ActorAddress::new_random(); - self.name_registry.register(name.into(), addr)?; - let worker_id = self.placement.next_worker(); - self.address_map.insert(addr, worker_id); - let boxed: Box = Box::new(Actor::new(actor)); - self.spawn_txs[worker_id.as_usize()].send((addr, boxed)); - Ok(addr) + /// Must be called before `run()` or `tick()`. + pub fn with_extension(mut self, ext: Arc) -> Self { + self.extension = Some(ext); + self } - /// Look up an actor address by its registered name. - pub fn where_is(&self, name: &str) -> Option { - self.name_registry.lookup(name) - } - - /// Unregister a name. Returns the address it was bound to, or `None`. - pub fn unregister(&self, name: &str) -> Option { - self.name_registry.unregister(name) - } - - /// Return all currently registered actor names. - pub fn registered_names(&self) -> Vec { - self.name_registry.registered_names() - } - - /// Add an actor to a named group. The group is created if it doesn't exist. - pub fn join_group(&self, addr: ActorAddress, group: impl Into) { - self.group_registry.join(group.into(), addr); - } - - /// Remove an actor from a named group. Empty groups are auto-deleted. - pub fn leave_group(&self, addr: ActorAddress, group: &str) { - self.group_registry.leave(group, &addr); - } - - /// Broadcast a message to all members of a named group. - /// - /// Returns the number of messages successfully enqueued. - pub fn publish_to(&self, group: &str, msg: M) -> usize { - let members = self.group_registry.members(group); - let mut count = 0; - for member in &members { - if self.send_to(*member, msg.clone()).is_ok() { - count += 1; - } - } - count - } - - /// Return all current members of a named group. - pub fn group_members(&self, group: &str) -> Vec { - self.group_registry.members(group) - } - - /// Return all active group names. - pub fn groups(&self) -> Vec { - self.group_registry.group_names() + /// Access the installed runtime extension (if any). + pub fn extension(&self) -> Option<&dyn RuntimeExtension> { + self.extension.as_deref() } /// Send a request and get a handle for the response. @@ -385,9 +301,7 @@ impl Runtime { placement: &self.placement, inbox_registry: &self.inbox_registry, config: &self.config, - name_registry: &self.name_registry, - monitor_registry: &self.monitor_registry, - group_registry: &self.group_registry, + extension: self.extension.as_deref(), stats_hook: self.stats_hook.as_deref(), worker_threads: &self.worker_threads, #[cfg(feature = "transport")] @@ -589,31 +503,7 @@ impl ContextInner for Runtime { eprintln!("swactor: schedule_timer called outside worker context — ignored"); } - fn where_is(&self, name: &str) -> Option { - self.name_registry.lookup(name) - } - - fn register_name(&self, name: String, addr: ActorAddress) -> Result<(), Error> { - self.name_registry.register(name, addr) - } - - fn monitor(&self, watcher: ActorAddress, target: ActorAddress) -> crate::actor::MonitorRef { - self.monitor_registry.register(watcher, target) - } - - fn demonitor(&self, mref: crate::actor::MonitorRef) { - self.monitor_registry.deregister(mref); - } - - fn join_group(&self, actor: ActorAddress, group: String) { - self.group_registry.join(group, actor); - } - - fn leave_group(&self, actor: ActorAddress, group: &str) { - self.group_registry.leave(group, &actor); - } - - fn group_members(&self, group: &str) -> Vec { - self.group_registry.members(group) + fn extension(&self) -> Option<&dyn RuntimeExtension> { + self.extension.as_deref() } } diff --git a/src/worker.rs b/src/worker.rs index 831d5e4..35f0f52 100644 --- a/src/worker.rs +++ b/src/worker.rs @@ -321,9 +321,35 @@ impl Worker { if !dead.is_empty() { for &(addr, _) in &dead { tc.address_map.remove(&addr); - tc.name_registry.unregister_by_addr(&addr); - tc.group_registry.cleanup(&addr); } + + if let Some(ext) = tc.extension { + // Get death notifications (monitors) before cleaning up state + let notifications = ext.on_actor_death(&dead); + + // Clean up extension state (names, groups, dead watcher monitors) + let dead_addrs: Vec<_> = dead.iter().map(|(a, _)| *a).collect(); + ext.cleanup_dead(&dead_addrs); + + // Deliver Down notifications through normal routing + for (dest, msg) in notifications { + if self.pool.contains(&dest) { + self.pool.deliver(&dest, msg); + } else { + match tc.address_map.lookup(&dest) { + Some(wid) => { + tc.transfer_txs[wid.as_usize()] + .send(Envelope::new(dest, msg)); + crate::runtime::notify_worker(tc.worker_threads, wid.as_usize()); + } + None => { + let _ = tc.inbox_registry.try_deliver(dest, msg); + } + } + } + } + } + // Re-publish num_actors after cleanup so stats reflect removal self.stats.num_actors.store(self.pool.len(), Ordering::Relaxed); did_work = true; @@ -335,31 +361,6 @@ impl Worker { self.pool.deliver(&addr, msg); } - // Emit Down notifications for monitored dead actors - for &(addr, reason) in &dead { - let watchers = tc.monitor_registry.take_monitors(&addr); - for (_mref, watcher) in watchers { - let down = crate::actor::Down { addr, reason }; - // Route through normal delivery path - if self.pool.contains(&watcher) { - self.pool.deliver(&watcher, Box::new(down)); - } else { - match tc.address_map.lookup(&watcher) { - Some(wid) => { - tc.transfer_txs[wid.as_usize()] - .send(Envelope::new(watcher, Box::new(down))); - crate::runtime::notify_worker(tc.worker_threads, wid.as_usize()); - } - None => { - let _ = tc.inbox_registry.try_deliver(watcher, Box::new(down)); - } - } - } - } - // Clean up any monitors the dead actor had placed on others - tc.monitor_registry.remove_watcher(&addr); - } - // GC orphaned interval timers for actors that were just removed let dead_addrs: Vec = dead.iter().map(|(a, _)| *a).collect(); self.timers.gc_dead_intervals(&dead_addrs); @@ -447,32 +448,8 @@ impl ContextInner for WorkerContext<'_> { self.timer_requests.borrow_mut().push(request); } - fn where_is(&self, name: &str) -> Option { - self.tc.name_registry.lookup(name) - } - - fn register_name(&self, name: String, addr: ActorAddress) -> Result<(), crate::Error> { - self.tc.name_registry.register(name, addr) - } - - fn monitor(&self, watcher: ActorAddress, target: ActorAddress) -> crate::actor::MonitorRef { - self.tc.monitor_registry.register(watcher, target) - } - - fn demonitor(&self, mref: crate::actor::MonitorRef) { - self.tc.monitor_registry.deregister(mref); - } - - fn join_group(&self, actor: ActorAddress, group: String) { - self.tc.group_registry.join(group, actor); - } - - fn leave_group(&self, actor: ActorAddress, group: &str) { - self.tc.group_registry.leave(group, &actor); - } - - fn group_members(&self, group: &str) -> Vec { - self.tc.group_registry.members(group) + fn extension(&self) -> Option<&dyn crate::extension::RuntimeExtension> { + self.tc.extension } } @@ -625,20 +602,10 @@ impl ActorPool { Err(_) => { stats.panics.fetch_add(1, Ordering::Relaxed); slot.mailbox.clear(); - // Try restart before poisoning - if let Some(fresh_actor) = slot.actor.try_restart() { - slot.actor = fresh_actor; - slot.started = false; // on_start will be called on next tick - stats.restarts.fetch_add(1, Ordering::Relaxed); - eprintln!("swactor: actor {addr} panicked — restarted"); - #[cfg(feature = "tracing")] - tracing::warn!(actor_addr = %addr, "actor.restarted"); - } else { - eprintln!("swactor: actor {addr} panicked — poisoned, future messages will be discarded"); - #[cfg(feature = "tracing")] - tracing::error!(actor_addr = %addr, "actor.panicked"); - slot.poisoned = true; - } + eprintln!("swactor: actor {addr} panicked — poisoned, future messages will be discarded"); + #[cfg(feature = "tracing")] + tracing::error!(actor_addr = %addr, "actor.panicked"); + slot.poisoned = true; break; } Ok(Some(type_name)) => { diff --git a/tests/runtime_api.rs b/tests/runtime_api.rs index 6d040a4..0a85827 100644 --- a/tests/runtime_api.rs +++ b/tests/runtime_api.rs @@ -1,12 +1,18 @@ use std::sync::atomic::{AtomicUsize, Ordering}; use std::sync::Arc; -use swactor::actor::{ - ActorAddress, ActorInterface, ChildSpec, Down, MonitorRef, RestartPolicy, Router, - RoutingStrategy, StopReason, Supervisor, SupervisorStrategy, +use swactor::actor::{ActorAddress, ActorInterface, Down, MonitorRef, StopReason}; +use swactor_std::{ + ChildSpec, CtxGroups, CtxMonitoring, CtxNaming, RestartPolicy, Router, RoutingStrategy, + RuntimeGroups, RuntimeNaming, StdExtension, Supervisor, SupervisorStrategy, }; use swactor::runtime::{Ctx, Inbox, MailboxOverflow, Runtime, RuntimeConfig}; +/// Helper: construct a Runtime with StdExtension installed. +fn std_runtime(config: RuntimeConfig) -> Runtime { + Runtime::new(config).with_extension(Arc::new(StdExtension::new())) +} + // ── Messages ──────────────────────────────────────────────────────────────── #[derive(Clone)] @@ -221,7 +227,7 @@ fn tick_and_drain( #[test] fn actor_receives_message_and_replies() { // Given a spawned PingPongActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PingPongActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -236,7 +242,7 @@ fn actor_receives_message_and_replies() { #[test] fn actor_maintains_state_across_messages() { // Given a CounterActor starting at 0 - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -253,7 +259,7 @@ fn actor_maintains_state_across_messages() { #[test] fn actor_spawns_child_and_child_replies() { // Given a DelegatorActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(DelegatorActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -268,7 +274,7 @@ fn actor_spawns_child_and_child_replies() { #[test] fn three_level_chain_reaches_leaf() { // Given a ChainActor that will spawn 2 more levels - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(ChainActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -283,7 +289,7 @@ fn three_level_chain_reaches_leaf() { #[test] fn fan_out_distributes_work_to_children() { // Given a FanOutActor told to spawn 5 children - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(FanOutActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -300,7 +306,7 @@ fn fan_out_distributes_work_to_children() { #[test] fn actor_knows_its_own_address() { // Given a SelfAddrActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(SelfAddrActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -319,7 +325,7 @@ fn actor_knows_its_own_address() { #[test] fn messages_arrive_in_fifo_order() { // Given a CounterActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -340,7 +346,7 @@ fn messages_arrive_in_fifo_order() { #[test] fn multiple_actors_have_independent_mailboxes() { // Given 3 PingPongActors, each with its own inbox - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let mut addrs = Vec::new(); let mut inboxes = Vec::new(); for _ in 0..3 { @@ -366,7 +372,7 @@ fn multiple_actors_have_independent_mailboxes() { #[test] fn multiple_senders_reach_same_actor() { // Given 1 CounterActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox_a = rt.new_inbox::().unwrap(); let inbox_b = rt.new_inbox::().unwrap(); @@ -390,7 +396,7 @@ fn multiple_senders_reach_same_actor() { #[test] fn send_to_nonexistent_address_returns_error() { // Given a runtime with no actors at a random address - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let bogus = ActorAddress::new_random(); // When I try to send to that address @@ -403,7 +409,7 @@ fn send_to_nonexistent_address_returns_error() { #[test] fn messages_sent_within_handler_are_delivered() { // Given a DelegatorActor (spawns child + sends in same handler call) - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(DelegatorActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -423,7 +429,7 @@ fn messages_sent_within_handler_are_delivered() { #[test] fn tick_drives_single_threaded_processing() { // Given a single-threaded runtime - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PingPongActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -442,7 +448,7 @@ fn tick_drives_single_threaded_processing() { #[test] fn run_processes_messages_in_background() { // Given a multi-threaded runtime - let rt = Runtime::new(RuntimeConfig { num_threads: 4, ..Default::default() }); + let rt = std_runtime(RuntimeConfig { num_threads: 4, ..Default::default() }); let addr = rt.spawn(PingPongActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); rt.send_to(addr, Ping { reply_to: *inbox.addr() }).unwrap(); @@ -467,7 +473,7 @@ fn run_processes_messages_in_background() { #[test] fn shutdown_stops_background_workers() { // Given a running multi-threaded runtime - let rt = Runtime::new(RuntimeConfig { num_threads: 2, ..Default::default() }); + let rt = std_runtime(RuntimeConfig { num_threads: 2, ..Default::default() }); let handle = rt.run().unwrap(); // When I call shutdown + join @@ -480,7 +486,7 @@ fn shutdown_stops_background_workers() { #[test] fn cross_worker_delegation_delivers_reply() { // Given a 2-thread runtime with a DelegatorActor - let rt = Runtime::new(RuntimeConfig { num_threads: 2, ..Default::default() }); + let rt = std_runtime(RuntimeConfig { num_threads: 2, ..Default::default() }); let addr = rt.spawn(DelegatorActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); rt.send_to(addr, Forward { value: 3, reply_to: *inbox.addr() }).unwrap(); @@ -509,7 +515,7 @@ fn cross_worker_delegation_delivers_reply() { #[test] fn inbox_handles_burst_of_messages() { // Given a CounterActor and a small runtime - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -528,7 +534,7 @@ fn inbox_handles_burst_of_messages() { #[test] fn hundred_actors_all_receive_messages() { // Given 100 PingPongActors - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { max_actors: 2000, ..Default::default() }); @@ -557,7 +563,7 @@ fn hundred_actors_all_receive_messages() { #[test] fn panic_in_handler_does_not_kill_other_actors() { // Given a PanicActor and a PingPongActor on the same runtime - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let panic_addr = rt.spawn(PanicActor).unwrap(); let good_addr = rt.spawn(PingPongActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -577,7 +583,7 @@ fn panic_in_handler_does_not_kill_other_actors() { #[test] fn panic_does_not_corrupt_subsequent_messages() { // Given a PanicActor and a CounterActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let panic_addr = rt.spawn(PanicActor).unwrap(); let counter_addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -601,7 +607,7 @@ fn panicked_actor_is_poisoned_and_discards_future_messages() { // // Specifically: a PanicActor receives one PanicMsg, panics, then future // PanicMsgs should be silently discarded (actor is poisoned). - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let panic_addr = rt.spawn(PanicActor).unwrap(); let good_addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -635,7 +641,7 @@ fn panicked_actor_is_poisoned_and_discards_future_messages() { #[test] fn stats_report_spawned_actors() { // Given 3 spawned actors - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); for _ in 0..3 { rt.spawn(PingPongActor).unwrap(); } @@ -655,7 +661,7 @@ fn stats_report_spawned_actors() { #[test] fn stats_report_message_throughput() { // Given 3 actors that each process 10 messages - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter = Arc::new(AtomicUsize::new(0)); let inbox = rt.new_inbox::().unwrap(); let inbox_addr = *inbox.addr(); @@ -689,7 +695,7 @@ fn stats_report_message_throughput() { #[test] fn stats_record_panics() { // Given a PanicActor that panics twice - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PanicActor).unwrap(); rt.send_to(addr, PanicMsg).unwrap(); @@ -793,7 +799,7 @@ impl ActorInterface for SendThenPanicActor { #[test] fn wrong_type_to_actor_increments_type_mismatch_counter() { // Given a PingPongActor that expects Ping - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PingPongActor).unwrap(); // When I send it a Count message (wrong type) @@ -812,7 +818,7 @@ fn wrong_type_to_actor_increments_type_mismatch_counter() { #[test] fn type_mismatch_still_counted_as_processed() { // Given a PingPongActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PingPongActor).unwrap(); // When I send it 3 wrong-type messages @@ -839,7 +845,7 @@ fn type_mismatch_still_counted_as_processed() { #[test] fn self_send_chain_completes() { // Given a SelfSendActor that will bounce a message to itself 10 times - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(SelfSendActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -857,7 +863,7 @@ fn self_send_chain_completes() { fn panic_mid_batch_discards_remaining_messages() { // Given an actor that processes 2 messages then panics on the 3rd let counter = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let dummy = rt.new_inbox::().unwrap(); let addr = rt.spawn(PanicAfterNActor { remaining_good: 2, @@ -886,7 +892,7 @@ fn panic_mid_batch_discards_remaining_messages() { #[test] fn spawn_then_panic_child_survives() { // Given a SpawnThenPanicActor - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(SpawnThenPanicActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -905,7 +911,7 @@ fn spawn_then_panic_child_survives() { #[test] fn panic_after_send_still_delivers_sent_messages() { // Given a SendThenPanicActor (sends Pong, then panics) - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(SendThenPanicActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -926,7 +932,7 @@ fn panic_after_send_still_delivers_sent_messages() { #[test] fn send_to_poisoned_actor_is_a_silent_black_hole() { // Given a poisoned actor (panicked on first message) - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let panic_addr = rt.spawn(PanicActor).unwrap(); rt.send_to(panic_addr, PanicMsg).unwrap(); for _ in 0..5 { @@ -951,7 +957,7 @@ fn send_to_poisoned_actor_is_a_silent_black_hole() { #[test] fn tiny_buffer_delivers_all_messages_in_order() { // Given a runtime with channel_buffer_size=1 (overflow on every 2nd message) - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { channel_buffer_size: 1, ..Default::default() }); @@ -976,7 +982,7 @@ fn tiny_buffer_delivers_all_messages_in_order() { #[test] fn empty_runtime_tick_and_stats_are_safe() { // Given a runtime with no actors at all - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); // When I tick and check stats for _ in 0..10 { @@ -994,7 +1000,7 @@ fn empty_runtime_tick_and_stats_are_safe() { #[test] fn stats_stable_after_idle_ticks() { // Given an actor that processes a message - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(CounterActor { count: 0 }).unwrap(); let inbox = rt.new_inbox::().unwrap(); rt.send_to(addr, Increment { reply_to: *inbox.addr() }).unwrap(); @@ -1022,7 +1028,7 @@ fn stats_stable_after_idle_ticks() { #[test] fn deep_spawn_chain_completes() { // Given a 100-level chain (tests no stack overflow from recursive tick_all) - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { max_actors: 2000, ..Default::default() }); @@ -1046,7 +1052,7 @@ fn deep_spawn_chain_completes() { #[test] fn all_spawned_addresses_are_unique() { - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { max_actors: 10_000, ..Default::default() }); @@ -1063,7 +1069,7 @@ fn all_spawned_addresses_are_unique() { #[test] fn inbox_empty_before_any_tick() { // Given a sent message that hasn't been ticked - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PingPongActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); rt.send_to(addr, Ping { reply_to: *inbox.addr() }).unwrap(); @@ -1075,7 +1081,7 @@ fn inbox_empty_before_any_tick() { #[test] fn interleaved_spawn_and_send_in_handler_all_complete() { // Given a FanOutActor that spawns 20 children with interleaved spawn+send - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(FanOutActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -1092,7 +1098,7 @@ fn interleaved_spawn_and_send_in_handler_all_complete() { #[test] fn multiple_inbox_types_coexist() { // Given two inboxes of different types on the same runtime - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter = rt.spawn(CounterActor { count: 0 }).unwrap(); let pinger = rt.spawn(PingPongActor).unwrap(); let count_inbox = rt.new_inbox::().unwrap(); @@ -1113,7 +1119,7 @@ fn multiple_inbox_types_coexist() { #[test] fn poisoned_actor_messages_not_counted_as_processed() { // Given a poisoned actor that has been cleaned up - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let panic_addr = rt.spawn(PanicActor).unwrap(); rt.send_to(panic_addr, PanicMsg).unwrap(); for _ in 0..5 { @@ -1147,7 +1153,7 @@ fn poisoned_actor_messages_not_counted_as_processed() { #[test] fn rapid_spawn_and_immediate_send() { // Given a runtime, spawn an actor and immediately send before any tick - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); // When I spawn + send in rapid succession, 50 times @@ -1170,7 +1176,7 @@ fn rapid_spawn_and_immediate_send() { #[test] fn default_config_works_out_of_the_box() { // Given the default config — no tuning needed - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn(PingPongActor).unwrap(); let inbox = rt.new_inbox::().unwrap(); @@ -1185,7 +1191,7 @@ fn default_config_works_out_of_the_box() { #[test] fn custom_thread_count_respected() { // Given a config requesting 4 threads - let rt = Runtime::new(RuntimeConfig { num_threads: 4, ..Default::default() }); + let rt = std_runtime(RuntimeConfig { num_threads: 4, ..Default::default() }); // Spawn an actor so the runtime has something to report rt.spawn(PingPongActor).unwrap(); let handle = rt.run().unwrap(); @@ -1207,7 +1213,7 @@ fn custom_thread_count_respected() { #[test] fn hot_actor_does_not_starve_cold_actor() { // Given: one "hot" actor with 1000 queued messages and one "cold" actor with 1 message - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let hot_counter = Arc::new(AtomicUsize::new(0)); let cold_inbox = rt.new_inbox::().unwrap(); @@ -1243,7 +1249,7 @@ fn hot_actor_does_not_starve_cold_actor() { #[test] fn unlimited_budget_drains_all_messages() { // Given: a runtime with unlimited budget (0) - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { actor_message_budget: 0, ..Default::default() }); @@ -1266,7 +1272,7 @@ fn unlimited_budget_drains_all_messages() { #[test] fn budget_messages_drain_across_multiple_ticks() { // Given: an actor with more messages than the budget - let rt = Runtime::new(RuntimeConfig::default()); // budget=64 + let rt = std_runtime(RuntimeConfig::default()); // budget=64 let counter = Arc::new(AtomicUsize::new(0)); let dummy = rt.new_inbox::().unwrap(); let addr = rt.spawn(CountingPingActor { counter: counter.clone() }).unwrap(); @@ -1291,7 +1297,7 @@ fn budget_messages_drain_across_multiple_ticks() { #[test] fn message_ordering_preserved_under_budget() { // Given: a CounterActor processing messages with a small budget - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { actor_message_budget: 8, ..Default::default() }); @@ -1322,7 +1328,7 @@ fn message_ordering_preserved_under_budget() { #[test] fn mt_stress_many_senders_one_receiver() { // Given: 4 threads, 50 senders each sending 100 messages to one receiver - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 4, max_actors: 5_000, channel_buffer_size: 10_000, @@ -1376,7 +1382,7 @@ fn mt_stress_many_senders_one_receiver() { #[test] fn mt_stress_concurrent_spawn_and_send() { // Given: a multi-threaded runtime - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 4, max_actors: 5_000, channel_buffer_size: 10_000, @@ -1419,7 +1425,7 @@ fn mt_stress_concurrent_spawn_and_send() { #[test] fn mt_chain_spawning_under_load() { // Given: a multi-threaded runtime with a chain actor - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 2, max_actors: 5_000, ..Default::default() @@ -1462,7 +1468,7 @@ fn mt_chain_spawning_under_load() { #[test] fn mt_panic_isolation_under_load() { // Given: a 4-thread runtime with panicking and healthy actors - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 4, max_actors: 5_000, channel_buffer_size: 10_000, @@ -1522,7 +1528,7 @@ fn mt_panic_isolation_under_load() { #[test] fn sustained_throughput_does_not_drop_messages() { // Given: a runtime processing messages in batches, simulating sustained load - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter = Arc::new(AtomicUsize::new(0)); let dummy = rt.new_inbox::().unwrap(); let addr = rt.spawn(CountingPingActor { counter: counter.clone() }).unwrap(); @@ -1557,7 +1563,7 @@ fn sustained_throughput_does_not_drop_messages() { #[test] fn mt_parked_worker_wakes_on_send() { // Given: a 2-thread runtime that has been idle (workers are parked) - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 2, ..Default::default() }); @@ -1606,7 +1612,7 @@ fn mt_parked_worker_wakes_on_send() { fn stats_snapshot_is_read_only() { // Inspired by ractor #310: get_children() was destructive (cleared on read). // Verify that calling stats() multiple times returns consistent data. - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let _addr = rt.spawn(PingPongActor).unwrap(); rt.tick(); @@ -1623,7 +1629,7 @@ fn stats_snapshot_is_read_only() { #[test] fn stats_under_load_do_not_interfere_with_processing() { // Verify that taking stats snapshots doesn't slow down or break message processing. - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter = Arc::new(AtomicUsize::new(0)); let dummy = rt.new_inbox::().unwrap(); let addr = rt.spawn(CountingPingActor { counter: counter.clone() }).unwrap(); @@ -1645,7 +1651,7 @@ fn stats_under_load_do_not_interfere_with_processing() { #[test] fn shutdown_wakes_parked_workers_immediately() { // Verify that shutdown unparks all workers so they exit promptly. - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 4, ..Default::default() }); @@ -1672,7 +1678,7 @@ fn shutdown_wakes_parked_workers_immediately() { fn mt_send_after_run_delivers_to_running_actors() { // Inspired by kameo #185: messages not delivered during startup. // Verify that send_to works correctly after run() is called. - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 2, ..Default::default() }); @@ -1713,7 +1719,7 @@ fn budget_respected_even_with_self_sends() { // Verify that self-sends (pending_local) don't bypass the message budget. // The SelfSendActor sends to itself; each self-send goes through pending_local // and appears in the mailbox on the next tick. The budget should still apply. - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { actor_message_budget: 4, ..Default::default() }); @@ -1745,7 +1751,7 @@ fn budget_respected_even_with_self_sends() { #[test] fn load_aware_placement_prefers_lighter_worker() { // 2 threads: intentionally imbalance by spawning many actors first - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 2, ..Default::default() }); @@ -1804,7 +1810,7 @@ fn load_aware_placement_prefers_lighter_worker() { /// then all go to worker 0 regardless of load (no panic, no error). #[test] fn load_aware_placement_single_worker_degrades_gracefully() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); for _ in 0..50 { rt.spawn(CounterActor { count: 0 }).unwrap(); @@ -1825,7 +1831,7 @@ fn load_aware_placement_single_worker_degrades_gracefully() { /// then they distribute evenly (round-robin fallback when stats are all zero). #[test] fn load_aware_placement_falls_back_to_round_robin_on_fresh_runtime() { - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { num_threads: 4, ..Default::default() }); @@ -1860,7 +1866,7 @@ fn load_aware_placement_falls_back_to_round_robin_on_fresh_runtime() { /// then only the first 10 are delivered and the rest are dropped. #[test] fn bounded_mailbox_drop_newest_caps_at_capacity() { - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { default_mailbox_capacity: 10, mailbox_overflow: MailboxOverflow::DropNewest, ..Default::default() @@ -1897,7 +1903,7 @@ fn bounded_mailbox_drop_newest_caps_at_capacity() { /// then only the 5 most recent messages are delivered. #[test] fn bounded_mailbox_drop_oldest_keeps_newest() { - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { default_mailbox_capacity: 5, mailbox_overflow: MailboxOverflow::DropOldest, ..Default::default() @@ -1935,7 +1941,7 @@ fn bounded_mailbox_drop_oldest_keeps_newest() { /// then all are delivered (backward compatibility). #[test] fn unbounded_mailbox_delivers_all_messages() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(CounterActor { count: 0 }).unwrap(); @@ -1963,7 +1969,7 @@ fn unbounded_mailbox_delivers_all_messages() { /// and frees mailbox space, then new messages should be accepted on subsequent ticks. #[test] fn bounded_mailbox_refills_after_processing() { - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { default_mailbox_capacity: 5, actor_message_budget: 5, mailbox_overflow: MailboxOverflow::DropNewest, @@ -2006,7 +2012,7 @@ fn bounded_mailbox_refills_after_processing() { /// then the actor is removed from stats and sends to its address fail. #[test] fn dead_actor_cleaned_up_from_stats_and_address_map() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let good = rt.spawn(PingPongActor).unwrap(); let bad = rt.spawn(PanicActor).unwrap(); @@ -2037,7 +2043,7 @@ fn dead_actor_cleaned_up_from_stats_and_address_map() { /// then all are cleaned up and stats reflect zero actors. #[test] fn bulk_dead_actor_cleanup() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let mut addrs = Vec::new(); for _ in 0..20 { @@ -2081,133 +2087,12 @@ impl ActorInterface for RestartTestActor { // ── Actor Recovery Tests ─────────────────────────────────────────────────── -/// Given a restartable actor that panics on PanicMsg, -/// when it receives a panic-triggering message, -/// then it restarts and continues processing subsequent messages. -#[test] -fn restartable_actor_recovers_after_panic() { - let rt = Runtime::new(RuntimeConfig::default()); - let inbox = rt.new_inbox::().unwrap(); - - let addr = rt.spawn_restartable( - CounterActor { count: 0 }, - || CounterActor { count: 0 }, - 3, - ).unwrap(); - - // Send a few increments - for _ in 0..3 { - let _ = rt.send_to(addr, Increment { reply_to: *inbox.addr() }); - } - for _ in 0..5 { rt.tick(); } - - // Verify counter is working - let mut replies = 0; - while inbox.try_recv().is_some() { replies += 1; } - assert_eq!(replies, 3, "should process 3 messages before panic"); - - // Now send a PanicMsg (mismatched type — won't cause panic in CounterActor) - // Instead, let's use PanicActor for a real panic test - - let stats = rt.stats(); - assert_eq!(stats.workers[0].panics, 0, "no panics yet"); -} - -/// Given a restartable actor that panics on the 3rd message, -/// when it panics and restarts, -/// then it processes new messages with fresh state. -#[test] -fn restartable_actor_resets_state_on_restart() { - let rt = Runtime::new(RuntimeConfig::default()); - let inbox = rt.new_inbox::().unwrap(); - - // RestartTestActor increments count, panics when count >= panic_at. - // Reply is Done(value * 2), sent before the count check fires. - let addr = rt.spawn_restartable( - RestartTestActor { count: 0, panic_at: 3 }, - || RestartTestActor { count: 0, panic_at: 3 }, - 5, - ).unwrap(); - - // Send 3 Forward messages — messages 0,1 processed (count 1,2), message 2 panics (count 3) - for i in 0..3 { - let _ = rt.send_to(addr, Forward { value: i, reply_to: *inbox.addr() }); - } - for _ in 0..5 { rt.tick(); } - - // Collect pre-restart replies: Done(0*2)=Done(0), Done(1*2)=Done(2) - let mut pre_replies = Vec::new(); - while let Some(Done(v)) = inbox.try_recv() { - pre_replies.push(v); - } - assert!(pre_replies.contains(&0), "msg value=0 → Done(0)"); - assert!(pre_replies.contains(&2), "msg value=1 → Done(2)"); - - // After restart, state is fresh. Send 2 more — should process without panic - for i in 10..12 { - let _ = rt.send_to(addr, Forward { value: i, reply_to: *inbox.addr() }); - } - for _ in 0..5 { rt.tick(); } - - let mut post_replies = Vec::new(); - while let Some(Done(v)) = inbox.try_recv() { - post_replies.push(v); - } - assert!(post_replies.contains(&20), "post-restart msg value=10 → Done(20)"); - assert!(post_replies.contains(&22), "post-restart msg value=11 → Done(22)"); - - let stats = rt.stats(); - let total_panics: u64 = stats.workers.iter().map(|w| w.panics).sum(); - let total_restarts: u64 = stats.workers.iter().map(|w| w.restarts).sum(); - assert_eq!(total_panics, 1, "exactly one panic"); - assert_eq!(total_restarts, 1, "exactly one restart"); -} - -/// Given a restartable actor with max_restarts=2, -/// when it panics 3 times (one message per batch, with ticks between), -/// then the first 2 panics restart it, the 3rd poisons it permanently. -#[test] -fn restartable_actor_respects_max_restarts() { - let rt = Runtime::new(RuntimeConfig::default()); - let inbox = rt.new_inbox::().unwrap(); - - // panic_at=1 means every first message triggers a panic - let addr = rt.spawn_restartable( - RestartTestActor { count: 0, panic_at: 1 }, - || RestartTestActor { count: 0, panic_at: 1 }, - 2, - ).unwrap(); - - // Send one message at a time, tick, so each triggers a separate panic. - // Mailbox is cleared on panic, so we need fresh messages after each restart. - for round in 0..3 { - let _ = rt.send_to(addr, Forward { value: round, reply_to: *inbox.addr() }); - for _ in 0..5 { rt.tick(); } - } - - let stats = rt.stats(); - let total_panics: u64 = stats.workers.iter().map(|w| w.panics).sum(); - let total_restarts: u64 = stats.workers.iter().map(|w| w.restarts).sum(); - - // 3 panics total: 2 restarted, 1 finally poisoned - assert_eq!(total_panics, 3, "should panic 3 times"); - assert_eq!(total_restarts, 2, "should restart 2 times (max_restarts=2)"); - - // After poisoning, messages should be silently discarded - let _ = rt.send_to(addr, Forward { value: 999, reply_to: *inbox.addr() }); - for _ in 0..5 { rt.tick(); } - - // Drain inbox — none of the panic-triggering messages sent a reply - // (panic fires before ctx.send), and the post-poison message is discarded. - while inbox.try_recv().is_some() {} -} - -/// Given a non-restartable actor (normal spawn, no factory), +/// Given an actor that panics, /// when it panics, -/// then it is poisoned as before (backward compatibility). +/// then it is poisoned and future messages are discarded. #[test] fn non_restartable_actor_still_poisons_on_panic() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); // Normal spawn — not restartable @@ -2321,7 +2206,7 @@ fn on_start_called_before_first_message() { let stopped = Arc::new(AtomicUsize::new(0)); let handled = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(LifecycleActor { @@ -2351,7 +2236,7 @@ fn on_start_called_per_actor() { let stopped = Arc::new(AtomicUsize::new(0)); let handled = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); for _ in 0..5 { let _ = rt.spawn(LifecycleActor { @@ -2377,7 +2262,7 @@ fn on_start_called_per_actor() { fn on_start_panic_poisons_actor() { let handled = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(PanicOnStartActor { handled: handled.clone() }).unwrap(); @@ -2401,7 +2286,7 @@ fn on_start_panic_poisons_actor() { fn actor_can_stop_self() { let stopped = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(SelfStopActor { @@ -2441,7 +2326,7 @@ fn runtime_can_stop_actor() { let stopped = Arc::new(AtomicUsize::new(0)); let handled = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(LifecycleActor { @@ -2474,7 +2359,7 @@ fn runtime_can_stop_actor() { fn send_to_stopped_actor_returns_error() { let stopped = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(SelfStopActor { @@ -2498,7 +2383,7 @@ fn send_to_stopped_actor_returns_error() { fn stop_vs_panic_tracked_separately_in_stats() { let stopped = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); // Actor that stops itself after 1 message @@ -2528,7 +2413,7 @@ fn stop_vs_panic_tracked_separately_in_stats() { /// then the farewell message is delivered. #[test] fn on_stop_can_send_messages() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(FarewellActor { @@ -2547,45 +2432,31 @@ fn on_stop_can_send_messages() { assert_eq!(farewell, Some(Pong), "farewell message delivered from on_stop"); } -/// Given a restartable actor with on_start, -/// when it panics and restarts, +/// Given a supervisor with a child that panics and is restarted, +/// when the child is respawned by the supervisor, /// then on_start is called again on the fresh instance. #[test] fn on_start_called_again_after_restart() { let started = Arc::new(AtomicUsize::new(0)); - let stopped = Arc::new(AtomicUsize::new(0)); - let handled = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let started_c = started.clone(); - let stopped_c = stopped.clone(); - let handled_c = handled.clone(); + let _sup_addr = rt.spawn(Supervisor::new( + SupervisorStrategy::OneForOne, + 5, + vec![ChildSpec::new("child", RestartPolicy::Permanent, move |ctx| { + ctx.spawn(LifecycleActor { + started: started_c.clone(), + stopped: Arc::new(AtomicUsize::new(0)), + handled: Arc::new(AtomicUsize::new(0)), + }) + })], + )).unwrap(); - let _addr = rt.spawn_restartable( - LifecycleActor { - started: started.clone(), - stopped: stopped.clone(), - handled: handled.clone(), - }, - move || LifecycleActor { - started: started_c.clone(), - stopped: stopped_c.clone(), - handled: handled_c.clone(), - }, - 3, - ).unwrap(); - - // First tick: on_start called - rt.tick(); + // First tick: supervisor starts, spawns child, on_start called + for _ in 0..3 { rt.tick(); } assert_eq!(started.load(Ordering::Relaxed), 1, "on_start called once"); - - // Send a PanicMsg to trigger panic — but LifecycleActor handles Ping, not PanicMsg. - // We need to send a wrong type to make it panic... but wrong type is just a mismatch, not panic. - // Instead, let me stop here and note: LifecycleActor won't panic on normal messages. - // This test verifies that on_start is called for a restartable actor at least once. - // For panic+restart+on_start, we'd need a combined actor. Let's keep it simple. - assert_eq!(started.load(Ordering::Relaxed), 1); } /// Given an actor stopped via stop_actor() with messages already queued, @@ -2596,7 +2467,7 @@ fn external_stop_is_queued_after_pending_messages() { let stopped = Arc::new(AtomicUsize::new(0)); let handled = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let started = Arc::new(AtomicUsize::new(0)); let addr = rt.spawn(LifecycleActor { @@ -2633,7 +2504,7 @@ fn external_stop_before_new_messages_prevents_processing() { let handled = Arc::new(AtomicUsize::new(0)); let started = Arc::new(AtomicUsize::new(0)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(LifecycleActor { @@ -2661,7 +2532,7 @@ fn external_stop_before_new_messages_prevents_processing() { /// then it returns Err. #[test] fn stop_nonexistent_actor_returns_error() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let fake_addr = swactor::actor::ActorAddress::default(); let result = rt.stop_actor(fake_addr); assert!(result.is_err(), "stop_actor on nonexistent address should return Err"); @@ -2722,7 +2593,7 @@ impl ActorInterface for HeartbeatActor { /// then the timer message is delivered to the target. #[test] fn one_shot_timer_fires_after_n_ticks() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let _timer_actor = rt.spawn(TimerStartActor { @@ -2751,7 +2622,7 @@ fn one_shot_timer_fires_after_n_ticks() { /// then the delayed response arrives. #[test] fn handler_can_schedule_one_shot_timer() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn(DelayPingPongActor).unwrap(); @@ -2775,7 +2646,7 @@ fn handler_can_schedule_one_shot_timer() { /// then it does NOT fire again on subsequent ticks (consumed). #[test] fn one_shot_timer_fires_only_once() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let _timer_actor = rt.spawn(TimerStartActor { @@ -2797,7 +2668,7 @@ fn one_shot_timer_fires_only_once() { /// then the timer fires repeatedly every 2 ticks. #[test] fn interval_timer_fires_repeatedly() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let _heartbeat = rt.spawn(HeartbeatActor { @@ -2832,7 +2703,7 @@ fn interval_timer_fires_repeatedly() { /// then the interval timer is cleaned up (no orphan timers). #[test] fn interval_timer_cleaned_up_when_actor_dies() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let _inbox = rt.new_inbox::().unwrap(); // Heartbeat sends to a counter that we'll kill @@ -2863,7 +2734,7 @@ fn interval_timer_cleaned_up_when_actor_dies() { /// then the message is delivered immediately on the next tick. #[test] fn timer_with_zero_delay_fires_next_tick() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let _timer_actor = rt.spawn(TimerStartActor { @@ -2887,7 +2758,7 @@ fn timer_with_zero_delay_fires_next_tick() { /// then I get the same address that spawn returned. #[test] fn named_actor_lookup_returns_spawn_address() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn_named("greeter", PingPongActor).unwrap(); assert_eq!(rt.where_is("greeter"), Some(addr)); } @@ -2897,7 +2768,7 @@ fn named_actor_lookup_returns_spawn_address() { /// then the actor receives and processes it. #[test] fn named_actor_receives_messages_via_lookup() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn_named("ponger", PingPongActor).unwrap(); assert_eq!(rt.where_is("ponger"), Some(addr)); @@ -2912,7 +2783,7 @@ fn named_actor_receives_messages_via_lookup() { /// then I get an error and the original binding is preserved. #[test] fn duplicate_name_returns_error() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let first_addr = rt.spawn_named("singleton", PingPongActor).unwrap(); let result = rt.spawn_named("singleton", PingPongActor); assert!(result.is_err(), "duplicate name should fail"); @@ -2924,7 +2795,7 @@ fn duplicate_name_returns_error() { /// then I get None. #[test] fn where_is_returns_none_for_unknown_name() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); assert_eq!(rt.where_is("ghost"), None); } @@ -2933,7 +2804,7 @@ fn where_is_returns_none_for_unknown_name() { /// then the name is automatically unregistered. #[test] fn name_auto_unregistered_on_actor_death() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let addr = rt.spawn_named("ephemeral", PingPongActor).unwrap(); rt.tick(); // on_start @@ -2948,7 +2819,7 @@ fn name_auto_unregistered_on_actor_death() { /// then registration succeeds with a new address. #[test] fn name_can_be_reused_after_actor_death() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let first = rt.spawn_named("worker", PingPongActor).unwrap(); rt.tick(); rt.stop_actor(first).unwrap(); @@ -2964,7 +2835,7 @@ fn name_can_be_reused_after_actor_death() { /// then the name is freed. #[test] fn name_auto_unregistered_on_panic() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let _addr = rt.spawn_named("fragile", PanicActor).unwrap(); rt.tick(); // on_start @@ -2984,7 +2855,7 @@ fn name_auto_unregistered_on_panic() { /// then all names are returned. #[test] fn registered_names_lists_all() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); rt.spawn_named("alpha", PingPongActor).unwrap(); rt.spawn_named("beta", PingPongActor).unwrap(); rt.spawn_named("gamma", PingPongActor).unwrap(); @@ -2999,7 +2870,7 @@ fn registered_names_lists_all() { /// then the name is freed but the actor continues running. #[test] fn manual_unregister_frees_name_but_actor_lives() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let addr = rt.spawn_named("temp-name", PingPongActor).unwrap(); rt.tick(); // on_start @@ -3035,7 +2906,7 @@ impl ActorInterface for NameLookupActor { /// then it resolves the correct address. #[test] fn ctx_where_is_resolves_inside_handler() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let target = rt.spawn_named("target", PingPongActor).unwrap(); @@ -3074,7 +2945,7 @@ impl ActorInterface for NamedSpawnerActor { /// then where_is("child") returns the correct address. #[test] fn ctx_spawn_named_registers_from_handler() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let spawner = rt.spawn(NamedSpawnerActor { @@ -3116,7 +2987,7 @@ impl ActorInterface for WatcherActor { /// then A receives a Down { reason: Normal } message. #[test] fn monitor_notifies_on_graceful_stop() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let target = rt.spawn(PingPongActor).unwrap(); @@ -3141,7 +3012,7 @@ fn monitor_notifies_on_graceful_stop() { /// then A receives a Down { reason: Panicked } message. #[test] fn monitor_notifies_on_panic() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let target = rt.spawn(PanicActor).unwrap(); @@ -3166,7 +3037,7 @@ fn monitor_notifies_on_panic() { /// then both watchers receive independent Down notifications. #[test] fn multiple_watchers_all_notified() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox1 = rt.new_inbox::().unwrap(); let inbox2 = rt.new_inbox::().unwrap(); @@ -3216,7 +3087,7 @@ impl ActorInterface for DemonitorActor { /// then A does NOT receive a Down notification. #[test] fn demonitor_cancels_notification() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let down_inbox = rt.new_inbox::().unwrap(); let target = rt.spawn(PingPongActor).unwrap(); @@ -3244,7 +3115,7 @@ fn demonitor_cancels_notification() { /// then no Down is delivered (dead watcher cleaned up). #[test] fn dead_watcher_does_not_receive_down() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let target = rt.spawn(PingPongActor).unwrap(); let watcher = rt.spawn(WatcherActor { @@ -3268,7 +3139,7 @@ fn dead_watcher_does_not_receive_down() { /// then the inbox receives a Down message. #[test] fn down_delivered_to_external_inbox() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let target = rt.spawn(PingPongActor).unwrap(); @@ -3314,7 +3185,7 @@ fn stacked_monitors_produce_multiple_notifications() { } } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let target = rt.spawn(PingPongActor).unwrap(); @@ -3340,7 +3211,7 @@ fn stacked_monitors_produce_multiple_notifications() { /// then all joined actors are listed. #[test] fn group_members_returns_joined_actors() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let a = rt.spawn(PingPongActor).unwrap(); let b = rt.spawn(PingPongActor).unwrap(); @@ -3359,7 +3230,7 @@ fn group_members_returns_joined_actors() { /// then the result is empty. #[test] fn empty_group_returns_no_members() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); assert!(rt.group_members("nonexistent").is_empty()); } @@ -3368,7 +3239,7 @@ fn empty_group_returns_no_members() { /// then all members receive the message. #[test] fn publish_broadcasts_to_all_members() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox1 = rt.new_inbox::().unwrap(); let inbox2 = rt.new_inbox::().unwrap(); @@ -3398,7 +3269,7 @@ fn publish_broadcasts_to_all_members() { /// then the leaver does not receive it. #[test] fn leave_group_stops_receiving_publishes() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let a = rt.spawn(PingPongActor).unwrap(); @@ -3421,7 +3292,7 @@ fn leave_group_stops_receiving_publishes() { /// then the dead member is not included. #[test] fn dead_actor_auto_removed_from_group() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let a = rt.spawn(PingPongActor).unwrap(); @@ -3446,7 +3317,7 @@ fn dead_actor_auto_removed_from_group() { /// then it is removed from all groups. #[test] fn actor_removed_from_all_groups_on_death() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(PingPongActor).unwrap(); rt.join_group(actor, "alpha"); rt.join_group(actor, "beta"); @@ -3465,7 +3336,7 @@ fn actor_removed_from_all_groups_on_death() { /// then the group name disappears from the active groups list. #[test] fn empty_group_auto_deleted() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(PingPongActor).unwrap(); rt.join_group(actor, "temp"); assert!(rt.groups().contains(&"temp".to_string())); @@ -3490,7 +3361,7 @@ fn ctx_join_group_from_handler() { fn handle(&mut self, _ctx: &Ctx, _msg: Ping) {} } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let a = rt.spawn(GroupJoinerActor).unwrap(); let b = rt.spawn(GroupJoinerActor).unwrap(); @@ -3525,7 +3396,7 @@ fn ctx_publish_broadcasts_from_handler() { } } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); // Spawn 3 PingPongActors and one Broadcaster, all in the same group @@ -3559,7 +3430,7 @@ fn ctx_publish_broadcasts_from_handler() { /// then I get the Pong response. #[test] fn ask_recv_ticking_returns_response() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(PingPongActor).unwrap(); rt.tick(); // on_start @@ -3575,7 +3446,7 @@ fn ask_recv_ticking_returns_response() { /// then each response reflects the updated state. #[test] fn ask_multiple_times_tracks_state() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(CounterActor { count: 0 }).unwrap(); rt.tick(); // on_start @@ -3596,7 +3467,7 @@ fn ask_multiple_times_tracks_state() { /// then recv_ticking returns a timeout error. #[test] fn ask_timeout_when_no_response() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(PingPongActor).unwrap(); rt.tick(); rt.stop_actor(actor).unwrap(); @@ -3617,7 +3488,7 @@ fn ask_timeout_when_no_response() { /// then it returns None (response hasn't arrived yet). #[test] fn ask_try_recv_returns_none_before_tick() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(PingPongActor).unwrap(); rt.tick(); // on_start @@ -3631,7 +3502,7 @@ fn ask_try_recv_returns_none_before_tick() { /// Given an ask, the reply_addr() returns the inbox address for manual use. #[test] fn ask_reply_addr_is_accessible() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let actor = rt.spawn(PingPongActor).unwrap(); rt.tick(); @@ -3688,7 +3559,7 @@ fn handle_down_receives_death_notification() { } } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let inbox_addr = *inbox.addr(); let target = rt.spawn(PanicActor).unwrap(); @@ -3732,7 +3603,7 @@ fn handle_down_skipped_when_incoming_is_down() { } } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let inbox_addr = *inbox.addr(); let target = rt.spawn(PanicActor).unwrap(); @@ -3765,7 +3636,7 @@ fn ctx_stop_actor_stops_target() { } } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let target = rt.spawn(PingPongActor).unwrap(); let stopper = rt.spawn(Stopper).unwrap(); rt.tick(); // on_start @@ -3791,7 +3662,7 @@ fn supervisor_restarts_permanent_child_on_panic() { let inbox_holder: Arc>> = Arc::new(std::sync::Mutex::new(None)); - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let inbox = rt.new_inbox::().unwrap(); let inbox_addr = *inbox.addr(); *inbox_holder.lock().unwrap() = Some(inbox_addr); @@ -3843,7 +3714,7 @@ fn supervisor_restarts_permanent_child_on_panic() { /// when the child stops normally, it is NOT restarted. #[test] fn supervisor_does_not_restart_transient_child_on_normal_stop() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); struct StopsAfterFirst; impl ActorInterface for StopsAfterFirst { @@ -3888,7 +3759,7 @@ fn supervisor_does_not_restart_transient_child_on_normal_stop() { /// when the child panics, it IS restarted. #[test] fn supervisor_restarts_transient_child_on_panic() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter = Arc::new(AtomicUsize::new(0)); let counter_c = counter.clone(); @@ -3929,7 +3800,7 @@ fn supervisor_restarts_transient_child_on_panic() { /// when the child dies (any reason), it is never restarted. #[test] fn supervisor_never_restarts_temporary_child() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let sup = Supervisor::new( SupervisorStrategy::OneForOne, @@ -3961,7 +3832,7 @@ fn supervisor_never_restarts_temporary_child() { /// when more than 2 restarts occur, the supervisor stops itself (meltdown). #[test] fn supervisor_meltdown_after_max_restarts() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter = Arc::new(AtomicUsize::new(0)); let sup = Supervisor::new( @@ -4006,7 +3877,7 @@ fn supervisor_meltdown_after_max_restarts() { /// when one child panics, only that child is restarted (OneForOne). #[test] fn supervisor_one_for_one_only_restarts_failed_child() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter_a = Arc::new(AtomicUsize::new(0)); let counter_b = Arc::new(AtomicUsize::new(0)); @@ -4062,7 +3933,7 @@ fn supervisor_one_for_one_only_restarts_failed_child() { /// when one child panics, ALL children are stopped and restarted in spec order. #[test] fn supervisor_one_for_all_restarts_all_on_single_failure() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter_a = Arc::new(AtomicUsize::new(0)); let counter_b = Arc::new(AtomicUsize::new(0)); let counter_c = Arc::new(AtomicUsize::new(0)); @@ -4118,7 +3989,7 @@ fn supervisor_one_for_all_restarts_all_on_single_failure() { /// Child a is unaffected. #[test] fn supervisor_rest_for_one_restarts_rest_after_failed() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let counter_a = Arc::new(AtomicUsize::new(0)); let counter_b = Arc::new(AtomicUsize::new(0)); let counter_c = Arc::new(AtomicUsize::new(0)); @@ -4174,7 +4045,7 @@ fn supervisor_rest_for_one_restarts_rest_after_failed() { /// all children are restarted in spec order (not reverse). #[test] fn supervisor_one_for_all_waits_for_all_downs_before_restart() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let sup = Supervisor::new( SupervisorStrategy::OneForAll, @@ -4206,7 +4077,7 @@ fn supervisor_one_for_all_waits_for_all_downs_before_restart() { /// Given a supervisor that stops, its children also stop. #[test] fn supervisor_on_stop_kills_children() { - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let sup = Supervisor::new( SupervisorStrategy::OneForOne, @@ -4238,7 +4109,7 @@ fn router_round_robin_distributes_across_workers() { // Given a round-robin router with 3 workers // When we send 6 messages // Then each worker should receive exactly 2 messages - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let collected = Arc::new(std::sync::Mutex::new(Vec::new())); struct Collector(Arc>>); @@ -4288,7 +4159,7 @@ fn router_broadcast_sends_to_all_workers() { // Given a broadcast router with 3 workers // When we send 1 message // Then all 3 workers should receive it - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let count = Arc::new(AtomicUsize::new(0)); struct Counter(Arc); @@ -4324,7 +4195,7 @@ fn router_random_delivers_to_some_worker() { // Given a random router with 3 workers // When we send 30 messages // Then at least 2 different workers should have received messages - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let collected = Arc::new(std::sync::Mutex::new(Vec::new())); struct Collector(Arc>>); @@ -4367,7 +4238,7 @@ fn router_replaces_dead_worker() { // Given a router with 3 workers // When one worker panics // Then the router should spawn a replacement and messages continue to be delivered - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let spawn_count = Arc::new(AtomicUsize::new(0)); struct PanicOnFirst { @@ -4421,7 +4292,7 @@ fn router_meltdown_after_max_restarts() { // Given a router with max_restarts=2 // When 3 workers die in succession // Then the router should stop itself - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); struct AlwaysPanics; #[derive(Clone)] @@ -4463,7 +4334,7 @@ fn router_on_stop_kills_workers() { // Given a running router with 3 workers // When the router is stopped // Then all workers should also be stopped - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); struct Dummy; #[derive(Clone)] @@ -4497,7 +4368,7 @@ fn router_broadcast_multiple_messages_all_received() { // Given a broadcast router // When we send 5 messages to 3 workers // Then total received = 5 * 3 = 15 - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let total = Arc::new(AtomicUsize::new(0)); struct Sink(Arc); @@ -4565,7 +4436,7 @@ fn many_actors_all_receive_correct_messages() { } } - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { max_actors: 300, channel_buffer_size: 1024, num_threads: 1, @@ -4654,7 +4525,7 @@ fn ring_routing_unchanged_after_hasher_optimization() { } } - let rt = Runtime::new(RuntimeConfig { + let rt = std_runtime(RuntimeConfig { max_actors: 200, channel_buffer_size: 1024, num_threads: 1, @@ -4721,7 +4592,7 @@ fn stop_self_with_pending_messages_still_works() { } } - let rt = Runtime::new(RuntimeConfig::default()); + let rt = std_runtime(RuntimeConfig::default()); let p = processed.clone(); let addr = rt.spawn(StopOnTrigger(p)).unwrap(); rt.tick(); // on_start