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test: correct test-worker-eventlooputil #35891

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test: correct test-worker-eventlooputil #35891

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4ea3b8d
test: correct test-worker-eventlooputil
Flarna Oct 31, 2020
4374323
fixup! test: correct test-worker-eventlooputil
Flarna Nov 2, 2020
932350e
fixup! test: correct test-worker-eventlooputil
Flarna Nov 3, 2020
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18 changes: 8 additions & 10 deletions test/parallel/test-worker-eventlooputil.js
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Original file line number Diff line number Diff line change
Expand Up @@ -34,9 +34,10 @@ function workerOnMetricsMsg(msg) {
}

if (msg.cmd === 'spin') {
const elu = eventLoopUtilization();
const t = now();
while (now() - t < msg.dur);
return this.postMessage(eventLoopUtilization());
return this.postMessage(eventLoopUtilization(elu));
}
}

Expand All @@ -50,12 +51,13 @@ let workerELU;
if (eventLoopUtilization().idle <= 0)
return setTimeout(mustCall(r), 5);

mainElu = eventLoopUtilization();

worker = new Worker(__filename, { argv: [ 'iamalive' ] });
metricsCh = new MessageChannel();
worker.postMessage({ metricsCh: metricsCh.port1 }, [ metricsCh.port1 ]);

workerELU = worker.performance.eventLoopUtilization;
mainElu = eventLoopUtilization();
metricsCh.port2.once('message', mustCall(checkWorkerIdle));
metricsCh.port2.postMessage({ cmd: 'elu' });
// Make sure it's still safe to call eventLoopUtilization() after the worker
Expand All @@ -66,15 +68,10 @@ let workerELU;
}));
})();


function checkWorkerIdle(wElu) {
const tmpMainElu = eventLoopUtilization(mainElu);
const perfWorkerElu = workerELU();
const eluDiff = eventLoopUtilization(perfWorkerElu, mainElu);
const tmpMainElu = eventLoopUtilization(mainElu);

assert.strictEqual(idleActive(eluDiff),
(perfWorkerElu.active - mainElu.active) +
(perfWorkerElu.idle - mainElu.idle));
assert.ok(idleActive(wElu) > 0, `${idleActive(wElu)} <= 0`);
assert.ok(idleActive(workerELU(wElu)) > 0,
`${idleActive(workerELU(wElu))} <= 0`);
Expand Down Expand Up @@ -104,8 +101,9 @@ function checkWorkerActive() {
const w2 = workerELU(w);

assert.ok(w2.active >= 50, `${w2.active} < 50`);
assert.ok(idleActive(wElu) > idleActive(w2),
`${idleActive(wElu)} <= ${idleActive(w2)}`);
assert.ok(wElu.active >= 50, `${wElu.active} < 50`);
assert.ok(idleActive(wElu) < idleActive(w2),
`${idleActive(wElu)} >= ${idleActive(w2)}`);

metricsCh.port2.postMessage({ cmd: 'close' });
});
Expand Down