Anne van Kesteren
e04f3dd399
Automatic update from web-platform-tests Serialization & deserialization of WebAssembly.Memory For https://github.com/WebAssembly/spec/issues/2155. -- wpt-commits: d5fc238896af5ebb44c9a9f7cd3b7e9830cfc70a wpt-pr: 59748
81 lines
2.9 KiB
HTML
81 lines
2.9 KiB
HTML
<!DOCTYPE html>
|
|
<meta charset="utf-8">
|
|
<title>Structured cloning of shared WebAssembly.Memory: success cases</title>
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
|
|
<div id="log"></div>
|
|
|
|
<script>
|
|
"use strict";
|
|
|
|
function makeSharedMemory() {
|
|
const memory = new WebAssembly.Memory({ shared: true, initial: 1, maximum: 1 });
|
|
new Int32Array(memory.buffer)[0] = 100;
|
|
return memory;
|
|
}
|
|
|
|
function assertSharedRoundtrip(original, echoed) {
|
|
assert_true(echoed instanceof WebAssembly.Memory,
|
|
"Echoed object is a WebAssembly.Memory");
|
|
assert_not_equals(echoed, original,
|
|
"Structured cloning produces a fresh WebAssembly.Memory object");
|
|
assert_true(echoed.buffer instanceof SharedArrayBuffer,
|
|
"Echoed Memory's buffer is a SharedArrayBuffer");
|
|
assert_not_equals(echoed.buffer, original.buffer,
|
|
"Echoed Memory's buffer is a fresh SharedArrayBuffer wrapper");
|
|
assert_equals(echoed.buffer.byteLength, original.buffer.byteLength,
|
|
"Echoed Memory's buffer has the same byte length");
|
|
assert_equals(echoed.buffer.byteLength, 65536,
|
|
"Echoed Memory's buffer is one wasm page (64 KiB)");
|
|
assert_equals(new Int32Array(echoed.buffer)[0], 100,
|
|
"Echoed Memory observes writes made before cloning");
|
|
assert_equals(new Int32Array(original.buffer)[1], 200,
|
|
"Original Memory observes writes made by the destination");
|
|
}
|
|
|
|
promise_test(t => {
|
|
return new Promise(resolve => {
|
|
const memory = makeSharedMemory();
|
|
const worker = new Worker("resources/shared-memory-worker.js");
|
|
worker.onmessage = t.step_func(({ data }) => {
|
|
assertSharedRoundtrip(memory, data);
|
|
resolve();
|
|
});
|
|
worker.postMessage(memory);
|
|
});
|
|
}, "postMessaging a shared WebAssembly.Memory to a dedicated worker");
|
|
|
|
promise_test(t => {
|
|
return new Promise(resolve => {
|
|
const iframe = document.createElement("iframe");
|
|
iframe.src = "resources/shared-memory-iframe.html";
|
|
iframe.onload = t.step_func(() => {
|
|
const memory = makeSharedMemory();
|
|
window.onmessage = t.step_func(({ data }) => {
|
|
assertSharedRoundtrip(memory, data);
|
|
resolve();
|
|
});
|
|
iframe.contentWindow.postMessage(memory, "*");
|
|
});
|
|
document.body.appendChild(iframe);
|
|
});
|
|
}, "postMessaging a shared WebAssembly.Memory to a same-origin iframe");
|
|
|
|
promise_test(t => {
|
|
return new Promise(resolve => {
|
|
const memory = makeSharedMemory();
|
|
const channel = new MessageChannel();
|
|
channel.port2.onmessage = ({ data }) => {
|
|
new Int32Array(data.buffer)[1] = 200;
|
|
channel.port2.postMessage(data);
|
|
};
|
|
channel.port1.onmessage = t.step_func(({ data }) => {
|
|
assertSharedRoundtrip(memory, data);
|
|
resolve();
|
|
});
|
|
channel.port1.postMessage(memory);
|
|
});
|
|
}, "Cloning a shared WebAssembly.Memory through a MessageChannel");
|
|
</script>
|