mirror of https://github.com/tc39/test262.git
70 lines
2.0 KiB
JavaScript
70 lines
2.0 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.wake
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description: >
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Test that Atomics.wake wakes all waiters on a location, but does not
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wake waiters on other locations.
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includes: [atomicsHelper.js]
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features: [Atomics, BigInt, SharedArrayBuffer, TypedArray]
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---*/
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const WAKEUP = 0; // Waiters on this will be woken
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const DUMMY = 1; // Waiters on this will not be woken
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const RUNNING = 2; // Accounting of live agents
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const NUMELEM = 3;
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const NUMAGENT = 3;
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for (var i = 0; i < NUMAGENT; i++) {
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$262.agent.start(`
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$262.agent.receiveBroadcast(function(sab) {
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const i64a = new BigInt64Array(sab);
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Atomics.add(i64a, ${RUNNING}, 1);
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$262.agent.report("A " + Atomics.wait(i64a, ${WAKEUP}, 0));
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$262.agent.leaving();
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});
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`);
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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 i64a = new BigInt64Array(sab);
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Atomics.add(i64a, ${RUNNING}, 1);
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// This will always time out.
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$262.agent.report("B " + Atomics.wait(i64a, ${DUMMY}, 0, 10));
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$262.agent.leaving();
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});
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`);
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const i64a = new BigInt64Array(
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new SharedArrayBuffer(NUMELEM * BigInt64Array.BYTES_PER_ELEMENT)
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);
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$262.agent.broadcast(i64a.buffer);
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// Wait for agents to be running.
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waitUntil(i64a, RUNNING, NUMAGENT + 1);
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// Then wait some more to give the agents a fair chance to wait. If we don't,
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// we risk sending the wakeup before agents are sleeping, and we hang.
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$262.agent.sleep(50);
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// Wake all waiting on WAKEUP, should be 3 always, they won't time out.
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assert.sameValue(
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Atomics.wake(i64a, WAKEUP),
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NUMAGENT,
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'Atomics.wake(i64a, WAKEUP) equals the value of `NUMAGENT` (3)'
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);
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var rs = [];
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for (var i = 0; i < NUMAGENT + 1; i++) {
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rs.push(getReport());
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}
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rs.sort();
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for (var i = 0; i < NUMAGENT; i++) {
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assert.sameValue(rs[i], 'A ok', 'The value of rs[i] is "A ok"');
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}
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assert.sameValue(rs[NUMAGENT], 'B timed-out', 'The value of rs[NUMAGENT] is "B timed-out"');
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