mirror of https://github.com/tc39/test262.git
59 lines
1.7 KiB
JavaScript
59 lines
1.7 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 Atomics.wait on arrays that allow atomic operations,
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in an Agent that is allowed to wait.
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features: [Atomics]
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---*/
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// Let's assume 'wait' is not allowed on the main thread,
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// even in the shell.
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$262.agent.start(
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`
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var sab = new SharedArrayBuffer(1024);
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var ab = new ArrayBuffer(16);
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var good_indices = [ (view) => 0/-1, // -0
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(view) => '-0',
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(view) => view.length - 1,
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(view) => ({ valueOf: () => 0 }),
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(view) => ({ toString: () => '0', valueOf: false }) // non-callable valueOf triggers invocation of toString
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];
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var view = new Int32Array(sab, 32, 20);
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view[0] = 0;
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$262.agent.report("A " + Atomics.wait(view, 0, 0, 0))
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$262.agent.report("B " + Atomics.wait(view, 0, 37, 0));
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// In-bounds boundary cases for indexing
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for ( let IdxGen of good_indices ) {
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let Idx = IdxGen(view);
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view.fill(0);
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// Atomics.store() computes an index from Idx in the same way as other
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// Atomics operations, not quite like view[Idx].
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Atomics.store(view, Idx, 37);
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$262.agent.report("C " + Atomics.wait(view, Idx, 0));
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}
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$262.agent.report("done");
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$262.agent.leaving();
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`)
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assert.sameValue(getReport(), "A timed-out");
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assert.sameValue(getReport(), "B not-equal"); // Even with zero timeout
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var r;
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while ((r = getReport()) != "done")
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assert.sameValue(r, "C not-equal");
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function getReport() {
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var r;
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while ((r = $262.agent.getReport()) == null)
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$262.agent.sleep(100);
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return r;
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}
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