<!DOCTYPE html>
<html>
<body>
<p>Test sharing SharedArrayBuffers between dedicated workers.</p>
<div id="result"></div>
<script type="text/javascript">
function log(message)
{
document.getElementById("result").innerHTML += message + "</br>";
}
if (window.testRunner) {
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
var testCases = [
{name: "SharedArrayBuffer"},
{name: "Int8Array"},
{name: "Uint8Array"},
{name: "Uint8ClampedArray"},
{name: "Int16Array"},
{name: "Uint16Array"},
{name: "Int32Array"},
{name: "Uint32Array"},
{name: "Float32Array"},
{name: "Float64Array"}
];
var currentTestCase = 0;
function runTestCase(testCase) {
var length = 8;
var name = testCase.name;
var type = window[name];
var sab;
var ta;
log("Running " + name + " test case");
if (testCase.name == 'SharedArrayBuffer') {
sab = new SharedArrayBuffer(length);
ta = new Uint8Array(sab);
} else {
sab = new SharedArrayBuffer(length * type.BYTES_PER_ELEMENT);
ta = new type(sab);
}
var i;
for (i = 0; i < length; ++i)
ta[i] = i;
// Without Atomics, we can't safely test modifying the contents of the
// SharedArrayBuffer. All we can test for now is that the SharedArrayBuffer
// is not neutered when transferred to a Worker.
if (testCase.name == 'SharedArrayBuffer')
worker.postMessage({name: name, data: sab, length: length}, [sab]);
else
worker.postMessage({name: name, data: ta, length: length}, [sab]);
if (sab.length === 0)
log("FAIL: SharedArrayBuffer was neutered during transfer.");
else
log("PASS: SharedArrayBuffer not neutered during transfer.");
// Ensure the data wasn't changed.
for (i = 0; i < length; ++i) {
if (ta[i] != i) {
log("FAIL: Original data changed during transfer. Expected " + i +
" got " + ta[i]);
break;
}
}
if (i == length)
log("PASS: Original data not changed during transfer.");
}
if (window.internals && internals.runtimeFlags.sharedArrayBufferEnabled && window.SharedArrayBuffer) {
var worker = new Worker('resources/worker-sharedarraybuffer-transfer.js');
runTestCase(testCases[currentTestCase]);
worker.onmessage = function(e) {
if (e.data == 'DONE') {
// The current test case is finished.
if (++currentTestCase == testCases.length) {
log("DONE");
testRunner.notifyDone();
} else {
runTestCase(testCases[currentTestCase]);
}
} else {
// The worker sent a pass/fail message.
log(e.data);
}
};
} else {
log("SharedArrayBuffers are not enabled -- skipping test.");
testRunner.notifyDone();
}
</script>
</body>
</html>