20 lines
860 B
HTML
20 lines
860 B
HTML
<!DOCTYPE html>
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<title>Test that calling "worker.postMessage()" will occur truly in parallel to the main JS thread performing other computation.</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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promise_test(t => {
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return new Promise(resolve => {
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let worker = new Worker("support/Worker-postMessage-happens-in-parallel.js");
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worker.postMessage('init');
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worker.onmessage = () => {
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let sab = new Uint8Array(new SharedArrayBuffer(16));
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worker.postMessage(sab);
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let end = performance.now() + 30*1000;
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while(sab[0] != 1 && performance.now() < end) /*wait to join with the result*/;
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assert_true(sab[0] == 1);
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resolve();
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};
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});
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}, 'Tests that calling "worker.postMessage()" will occur truly in parallel to the main JS thread');
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</script>
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