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60 lines
1.6 KiB
JavaScript
60 lines
1.6 KiB
JavaScript
// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-atomics.wait
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description: >
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Test that Atomics.wait returns the right result when it timed out and that
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the time to time out is reasonable.
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info: |
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17. Let awoken be Suspend(WL, W, t).
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18. If awoken is true, then
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a. Assert: W is not on the list of waiters in WL.
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19. Else,
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a.Perform RemoveWaiter(WL, W).
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includes: [atomicsHelper.js]
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features: [Atomics, SharedArrayBuffer, TypedArray]
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---*/
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const RUNNING = 1;
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const TIMEOUT = $262.agent.timeouts.small;
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const i32a = new Int32Array(
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new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
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);
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$262.agent.start(`
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$262.agent.receiveBroadcast(function(sab) {
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const i32a = new Int32Array(sab);
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Atomics.add(i32a, ${RUNNING}, 1);
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const before = $262.agent.monotonicNow();
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const unpark = Atomics.wait(i32a, 0, 0, ${TIMEOUT});
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const duration = $262.agent.monotonicNow() - before;
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$262.agent.report(duration);
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$262.agent.report(unpark);
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$262.agent.leaving();
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});
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`);
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$262.agent.safeBroadcast(i32a);
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$262.agent.waitUntil(i32a, RUNNING, 1);
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// Try to yield control to ensure the agent actually started to wait.
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$262.agent.tryYield();
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// NO OPERATION OCCURS HERE!
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const lapse = $262.agent.getReport();
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assert(
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lapse >= TIMEOUT,
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'The result of `(lapse >= TIMEOUT)` is true'
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);
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assert.sameValue(
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$262.agent.getReport(),
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'timed-out',
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'$262.agent.getReport() returns "timed-out"'
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);
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assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(i32a, 0) returns 0');
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