| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>SharedArrayBuffers, when cloned, do not give back the same object</title> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#structuredserialize"> |
| <link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/utils.js"></script> |
| <script src="resources/test-sab.js"></script> |
| |
| <div id="log"></div> |
| |
| <script> |
| "use strict"; |
| |
| async_test(t => { |
| const testId = token(); |
| const sab = new SharedArrayBuffer(1); |
| window.addEventListener("message", t.step_func(({ data }) => { |
| if (data.testId !== testId) { |
| return; |
| } |
| |
| assertSABsHaveSameBackingBlock(sab, data.sab); |
| |
| t.done(); |
| })); |
| |
| window.postMessage({ testId, sab }, "*"); |
| }, "postMessaging to this window does not give back the same SharedArrayBuffer (but does use the same backing block)"); |
| |
| async_test(t => { |
| const testId = token(); |
| const sab = new SharedArrayBuffer(); |
| const worker = new Worker("../resources/echo-worker.js"); |
| |
| worker.addEventListener("message", t.step_func(({ data }) => { |
| if (data.testId !== testId) { |
| return; |
| } |
| |
| assert_not_equals(data.sab, sab); |
| t.done(); |
| })); |
| |
| worker.postMessage({ testId, sab }); |
| }, "postMessaging to a worker and back does not give back the same SharedArrayBuffer"); |
| |
| async_test(t => { |
| const testId = token(); |
| const sab = new SharedArrayBuffer(); |
| window.addEventListener("message", t.step_func(({ data }) => { |
| if (data.testId !== testId) { |
| return; |
| } |
| |
| assert_not_equals(data.sab, sab); |
| t.done(); |
| })); |
| |
| const iframe = document.createElement("iframe"); |
| iframe.onload = t.step_func(() => { |
| iframe.contentWindow.postMessage({ testId, sab }, "*"); |
| }); |
| iframe.src = "../resources/echo-iframe.html"; |
| document.body.appendChild(iframe); |
| }, "postMessaging to an iframe and back does not give back the same SharedArrayBuffer"); |
| </script> |