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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/waitAsync/no-spurious-wakeup-on-store.js | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/waitAsync/no-spurious-wakeup-on-store.js b/js/src/tests/test262/built-ins/Atomics/waitAsync/no-spurious-wakeup-on-store.js new file mode 100644 index 0000000000..b60ce4f767 --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/waitAsync/no-spurious-wakeup-on-store.js @@ -0,0 +1,74 @@ +// |reftest| skip async -- Atomics.waitAsync is not supported +// Copyright (C) 2020 Rick Waldron. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-atomics.waitasync +description: > + Waiter does not spuriously notify on index which is subject to Store operation +info: | + AddWaiter ( WL, waiterRecord ) + + 5. Append waiterRecord as the last element of WL.[[Waiters]] + 6. If waiterRecord.[[Timeout]] is finite, then in parallel, + a. Wait waiterRecord.[[Timeout]] milliseconds. + b. Perform TriggerTimeout(WL, waiterRecord). + + TriggerTimeout( WL, waiterRecord ) + + 3. If waiterRecord is in WL.[[Waiters]], then + a. Set waiterRecord.[[Result]] to "timed-out". + b. Perform RemoveWaiter(WL, waiterRecord). + c. Perform NotifyWaiter(WL, waiterRecord). + 4. Perform LeaveCriticalSection(WL). + +flags: [async] +includes: [atomicsHelper.js] +features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, arrow-function, async-functions] +---*/ +assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"'); + +const RUNNING = 1; +const TIMEOUT = $262.agent.timeouts.small; + +const i32a = new Int32Array( + new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4) +); + +$262.agent.start(` + $262.agent.receiveBroadcast(async (sab) => { + const i32a = new Int32Array(sab); + Atomics.add(i32a, ${RUNNING}, 1); + + const before = $262.agent.monotonicNow(); + const unpark = await Atomics.waitAsync(i32a, 0, 0, ${TIMEOUT}).value; + const duration = $262.agent.monotonicNow() - before; + + $262.agent.report(duration); + $262.agent.report(unpark); + $262.agent.leaving(); + }); +`); + +$262.agent.safeBroadcastAsync(i32a, RUNNING, 1).then(async (agentCount) => { + + assert.sameValue(agentCount, 1, 'The value of `agentCount` is 1'); + + Atomics.store(i32a, 0, 0b1010); + + const lapse = await $262.agent.getReportAsync(); + + assert( + lapse >= TIMEOUT, + 'The result of evaluating `(lapse >= TIMEOUT)` is true' + ); + + const result = await $262.agent.getReportAsync(); + + assert.sameValue( + result, + 'timed-out', + 'The value of `result` is "timed-out"' + ); + assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0) must return 0'); +}).then($DONE, $DONE); |