Posix reactor base class
| Variable | tls | Undocumented |
| Variable | ssl | Undocumented |
| Variable | unixEnabled | Undocumented |
| Variable | processEnabled | Undocumented |
| Variable | win32process | Undocumented |
| Class | PosixReactorBase | A basis for reactors that use file descriptors. |
| Variable | _NO_FILENO | Undocumented |
| Variable | _NO_FILEDESC | Undocumented |
| Interface | _IWaker | Interface to wake up the event loop based on the self-pipe trick. |
| Class | _SocketWaker | No summary |
| Class | _FDWaker | The self-pipe trick<http://cr.yp.to/docs/selfpipe.html>, used to wake up the main loop from another thread or a signal handler. |
| Class | _UnixWaker | This class provides a simple interface to wake up the event loop. |
| Class | _SIGCHLDWaker | _SIGCHLDWaker can wake up a reactor whenever SIGCHLD is received. |
| Class | _DisconnectSelectableMixin | Mixin providing the _disconnectSelectable method. |
| Class | _PollLikeMixin | Mixin for poll-like reactors. |
| Class | _ContinuousPolling | Schedule reads and writes based on the passage of time, rather than notification. |