I want to integrate some asyncore.dispatcher instances into GLib's default main context.

I figure I can create a custom GSource that's able to detect event readiness on the various sockets in asyncore.socket_map. From C I believe this is done by creating the necessary GSourceFuncs which could involve cheap and non-blocking calls to select, and then handling them using asyncore.read, .write and friends.

How do I actually create a GSource from Python? The class glib.Source is undocumented, and attempts to use the class interactively have been in vain.

Is there some other method that allows me to handled socket events in the asyncore module without resorting to timeouts (or anything that endangers potential throughput and CPU usage)?