class Async::Scheduler

def close
	unless @children.nil?
		self.run_loop do
			until self.terminate
				self.run_once!
			end
		end
	end
	
	Kernel.raise "Closing scheduler with blocked operations!" if @blocked > 0
ensure
	# We want `@selector = nil` to be a visible side effect from this point forward, specifically in `#interrupt` and `#unblock`. If the selector is closed, then we don't want to push any fibers to it.
	if selector = @selector
		@selector = nil
		selector.close
	end
	
	if worker_pool = @worker_pool
		@worker_pool = nil
		worker_pool.close
	end
	
	consume
end