The method EventsLoop::interrupt() is currently serving the dual purpose of

1. Stop processing events during run_forever and poll_events
2. Wakeup the event loop from other threads

Running the wakeup code when you only care about 1. simply wastes cycles.

I'm proposing that a second method, EventsLoop::wakeup() is added to allow performing these tasks independently. An alternative design would be removing the interrupted flag altogether and allow the closure passed to run_forever and poll_events to return a flag indicating their desire to continue or halt.