# File lib/rack/reloader.rb, line 33
33:     def call(env)
34:       if @cooldown and Time.now > @last + @cooldown
35:         if Thread.list.size > 1
36:           Thread.exclusive{ reload! }
37:         else
38:           reload!
39:         end
40: 
41:         @last = Time.now
42:       end
43: 
44:       @app.call(env)
45:     end