In the features of ECMAScript 2017 there is Shared memory and atomics. I try test it in Google Chrome 59.0.3071.109 (Experimental SharedArrayBuffer flag is enabled). When I try post SharedArrayBuffer in simple Worker it's works. But when I try post SharedArrayBuffer in SharedWorker, in event parament of onmessage event handler I get event.data is null. Why is this so? Here is an example of my code:
index.html:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Web Workers</title>
<script src="main.js"></script>
</head>
<body>
<button onclick="post()">Post</button>
<button onclick="get()">Get</button>
</body>
</html>
main.js:
var worker = new SharedWorker('worker.js');
var buffer = new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT);
new Int32Array(buffer)[0] = 12;
function post() {
worker.port.postMessage({buffer});
}
function get() {
console.log(new Int32Array(buffer)[0]);
}
worker.js:
self.onconnect = function (e) {
var [port] = e.ports;
port.onmessage = function (e) {
console.log(e.data);// null
};
};
Thank you.
SharedArrayBufferis still not yet supported on Chrome 59.