class Async::Scheduler

def io_wait(io, events, timeout = nil)
	fiber = Fiber.current
	
	if timeout
		timer = @timers.after(timeout) do
			fiber.raise(TimeoutError)
		end
	end
	
	# Console.logger.info(self, "-> io_wait", fiber, io, events)
	events = @selector.io_wait(fiber, io, events)
	# Console.logger.info(self, "<- io_wait", fiber, io, events)
	
	return events
rescue TimeoutError
	return false
ensure
	timer&.cancel
end