This library provides basic compatibility for the html5 web worker api in browsers that don't support it. Ideally, usage is as simple as including Worker.js, and everything should work out of the box. In practice, you should read the Limitations section and test in a browser that doesn't support web workers.
This was developed for Asterank, where it is used so people with underpowered browsers can still enjoy the physics simulations.
No support for infinite loops in workers
You'll have to change infinite loops in your workers to something like:
(function loop() {
// do work
setTimeout(loop, 60);
});
Or, experimentally, use the doEvents method exposed in the worker context:
while (true) {
// do work
self.doEvents();
}
No support for close/terminate
worker.close() or self.terminate() have no effect, as the workers aren't actually running on separate threads (so there is nothing to terminate). Instead, I recommend having your worker listen for a shutdown message that causes it to stop doing work.
- error handlers
- onerror, etc. events
- terminate/close support
web-workers-fallback Copyright (C) 2012 by Ian Webster
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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