instance method restart!

# File railties/lib/fcgi_handler.rb, line 188
    def restart!
      config       = ::Config::CONFIG
      ruby         = File::join(config['bindir'], config['ruby_install_name']) + config['EXEEXT']
      command_line = [ruby, $0, ARGV].flatten.join(' ')

      dispatcher_log :info, "restarted"

      # close resources as they won't be closed by
      # the OS when using exec
      logger.close rescue nil
      Rails.logger.close rescue nil

      exec(command_line)
    end