Using workers in JavaScript code modules

You can do so by using ChromeWorker instead of the standard Worker object. It works exactly like a standard Worker, except that it has access to js-ctypes via a global ctypes object available in the global scope of the worker

Starting in Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1), you can use workers in JavaScript code modules (JSMs). This lets you run code in a separate thread from your JSM. To create a ChromeWorker for this purpose, you need to use the nsIWorkerFactory interface:

var workerFactory = Components.classes["@mozilla.org/threads/workerfactory;1"]
                              .createInstance(Components.interfaces.nsIWorkerFactory);

var worker = workerFactory.newChromeWorker("script_url.js");

This will create a new chrome worker that will immediately begin to run the script at the specified URL (in this case, "script_url.js").  For example,   "script_url.js" can be "chrome://extension_name/content/script.js".

See also

• Using web workers
• ChromeWorker
• nsIWorkerFactory
• Worker