    # File lib/phusion_passenger/utils/file_system_watcher.rb, line 123
                            def initialize(filename, stat)
                                    @filename = filename
                                    @stat = stat
                                    @subfiles = {}
                                    Dir.foreach(filename) do |entry|
                                            next if entry == DOT || entry == DOTDOT
                                            subfilename = "#{filename}/#{entry}"
                                            @subfiles[entry] = FileInfo.new(subfilename, File.stat(subfilename))
                                    end
                            end