| <!DOCTYPE html> | |
| <meta charset=utf-8> | |
| <script src="/resources/testharness.js"></script> | |
| <script src="/resources/testharnessreport.js"></script> | |
| <body> | |
| <script> | |
| const t = async_test('postMessage and block'); | |
| const w = new Worker('support/postMessage_block_worker.js'); | |
| w.onmessage = t.step_func_done(() => { | |
| const a = new Int32Array(new SharedArrayBuffer(4)); | |
| w.postMessage(a); | |
| while (Atomics.load(a, 0) === 0); | |
| assert_equals(Atomics.load(a, 0), 1); | |
| }); | |
| </script> | |
| </body> |