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