class Async::Scheduler

def run(...)
	Kernel::raise ClosedError if @selector.nil?
	
	initial_task = self.async(...) if block_given?
	
	# In theory, we could use Exception here to be a little bit safer, but we've only shown the case for SignalException to be a problem, so let's not over-engineer this.
	Thread.handle_interrupt(SignalException => :never) do
		while true
			# If we are interrupted, we need to exit:
			break if self.interrupted?
			
			# If we are finished, we need to exit:
			break unless self.run_once
		end
	end
	
	return initial_task
ensure
	Console.logger.debug(self) {"Exiting run-loop because #{$! ? $! : 'finished'}."}
end