Implements a simple polling interface for file descriptors that don't work with select() - this is pretty much only useful on Windows.

Class _PollableResource Undocumented
Class _PollingTimer Undocumented
Class _PollableReadPipe Undocumented
Class _PollableWritePipe No class docstring; 4/10 methods documented
API Documentation for Twisted, generated by pydoctor at 2016-04-11 10:39:53.