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Phase F F2/F3: quarantine NOT deletable — the lever proved the drop is load-bearing; registry keeps the fact

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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Td4ujboGuAw26jvbDQzehj
This commit is contained in:
Gergő Törcsvári 2026-08-09 14:46:06 +02:00
commit 7122cdc461
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GPG key ID: 8E75F2CDE64E5322
5 changed files with 67 additions and 10 deletions
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37
scripts/common/shims/asyncify-scheduler.js
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@ -521,20 +521,28 @@ if (typeof Asyncify !== "undefined" && !globalThis.__wxSchedulerInstalled) {
if (Asyncify.state !== 0) {
return __originalHandleSleep(startAsync);
}
// Phase E telemetry (doc 22 §5): count fresh in-place parks that begin
// on a NON-main stack (tool coroutine / scheduler context). Must reach
// ZERO at the flip — until then it measures the remaining doc-19-class
// exposure. Leaf probe into wasm; state is 0 here so no unwind is in
// Phase F (doc 22 §10 F2/F3): report every fresh in-place park to the
// REGISTRY. Begin() returns the owning context id (0 = main stack);
// while recorded, fiber_enterable()/fiber_transfer refuse entering that
// context — the registry-owned replacement for the deleted quarantine.
// Also the Phase E telemetry: fiberStackParks must be 0 at the flip's
// repro gate. Leaf probe into wasm; state is 0 here so no unwind is in
// flight yet.
var parkOwnerCtx = 0;
try {
if (Module["_wxWasmProbeOnFiberStack"] && Module["_wxWasmProbeOnFiberStack"]()) {
AsyncifyScheduler.inplaceParksOnFiberStack++;
__rec("inplace-park-on-fiber-stack n=" + AsyncifyScheduler.inplaceParksOnFiberStack);
if (Module["_wxWasmSchedInplaceParkBegin"]) {
parkOwnerCtx = Module["_wxWasmSchedInplaceParkBegin"]() | 0;
if (parkOwnerCtx) {
AsyncifyScheduler.inplaceParksOnFiberStack++;
__rec("inplace-park-on-fiber-stack ctx=" + parkOwnerCtx
+ " n=" + AsyncifyScheduler.inplaceParksOnFiberStack);
}
}
} catch (e) { /* probe must never break a park */ }
var sleepCtx = {
capturedData: null,
cleanedUp: false,
parkOwnerCtx: parkOwnerCtx,
rootOwned: (typeof Fibers === "undefined")
|| (!Fibers.__inFiberEntry
&& !(Asyncify.__wakingOwnerFiber || false)),
@ -544,6 +552,14 @@ if (typeof Asyncify !== "undefined" && !globalThis.__wxSchedulerInstalled) {
var cleanup = function () {
if (sleepCtx.cleanedUp) return;
sleepCtx.cleanedUp = true;
if (sleepCtx.parkOwnerCtx) {
try {
if (Module["_wxWasmSchedInplaceParkEnd"]) {
Module["_wxWasmSchedInplaceParkEnd"](sleepCtx.parkOwnerCtx);
}
} catch (e) { /* never break a wake */ }
sleepCtx.parkOwnerCtx = 0;
}
var idx = Asyncify.__pendingSleepContexts.indexOf(sleepCtx);
if (idx !== -1) Asyncify.__pendingSleepContexts.splice(idx, 1);
};
@ -625,6 +641,13 @@ if (typeof Asyncify !== "undefined" && !globalThis.__wxSchedulerInstalled) {
// --- stale-fiber-rewind guard (ported from handlesleep.js; semantics
// unchanged — these encode the consume-once/quarantine contracts of
// docs/features/async/16) + trampoline heal ownership -------------------
// Phase F F2/F3 (doc 22 §10, 2026-08-09): deletion was built, measured and
// REVERTED. The registry now carries the in-place-park fact
// (wxWasmSchedInplaceParkBegin/End) and refuses on the transfer lane, but
// the quarantine's DROP is still the only correct recovery for a misrouted
// yield-back under attribution rot (a C++-level refusal ghost-resumes the
// yielding coroutine — measured as the lever's phase2 overshoot). This
// block stays until attribution is registry-authoritative (gap 3).
if (typeof Fibers !== "undefined"
&& typeof Fibers.finishContextSwitch === "function"
&& !Fibers.__staleRewindGuardInstalled) {