A YAM-like mainloop for Scala.

I seem to rewrite this code with every new language I learn. The idea is to provide an easy to use wrapper around select, with a thread-safe way to schedule timers (and have new timers interrupt a blocking select). This is particularly nice in a functional language like Scala, where the callbacks that you pass in to wait for a socket to become ready can be first-class functions.

Other examples of a mainloop like this one can be found in libsfs, the Bamboo DHT, and YAM (Yet Another Mainloop), which is part of the UIA project from MIT.