mirror of https://github.com/tc39/test262.git
62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
// Copyright (C) 2018 Amal Hussein. 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 was awoken before
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a timeout
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info: |
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Atomics.wait( typedArray, index, value, timeout )
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2.Let i be ? ValidateAtomicAccess(typedArray, index).
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...
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2.Let accessIndex be ? ToIndex(requestIndex).
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9.If IsSharedArrayBuffer(buffer) is false, throw a TypeError exception.
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...
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3.If bufferData is a Data Block, return false
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If value is undefined, then
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Let index be 0.
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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.huge;
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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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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.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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assert.sameValue(Atomics.notify(i32a, 0), 1, 'Atomics.notify(i32a, 0) returns 1');
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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($262.agent.getReport(), 'ok', '$262.agent.getReport() returns "ok"');
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