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54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
// Copyright (C) 2020 Rick Waldron. 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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description: >
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Testing $262.agent.* extensions
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info: |
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Including atomicsHelper.js will expose the functions:
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- $262.agent.getReportAsync
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- $262.agent.getReport
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- $262.agent.safeBroadcastAsync
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- $262.agent.safeBroadcast
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- $262.agent.setTimeout
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- $262.agent.tryYield (wrapper for $262.agent.sleep)
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- $262.agent.trySleep (wrapper for $262.agent.sleep)
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$262.agent.* relies on the presence of host defined agent capabilities
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includes: [atomicsHelper.js]
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features: [Atomics, SharedArrayBuffer]
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---*/
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const AGENT_READY_INDEX = 0;
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const AGENT_WAIT_INDEX = 1;
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$262.agent.start(`
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$262.agent.receiveBroadcast((sab) => {
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const i32a = new Int32Array(sab);
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Atomics.add(i32a, ${AGENT_READY_INDEX}, 1);
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$262.agent.report(Atomics.wait(i32a, ${AGENT_WAIT_INDEX}, 0, Infinity));
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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, AGENT_READY_INDEX, 1);
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// An agent may have been interrupted between reporting its initial report
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// and the `Atomics.wait` call. Try to yield control to ensure the agent
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// actually started to wait.
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$262.agent.tryYield();
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assert.sameValue(
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Atomics.notify(i32a, AGENT_WAIT_INDEX),
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1,
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'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), AGENT_WAIT_INDEX) must return 1'
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);
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assert.sameValue($262.agent.getReport(), 'ok', '$262.agent.getReport() must return "ok"');
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