# File lib/selenium/webdriver/common/platform.rb, line 45
      def bitsize
        @bitsize ||= (
          if defined?(FFI::Platform::ADDRESS_SIZE)
            FFI::Platform::ADDRESS_SIZE
          elsif defined?(FFI)
            FFI.type_size(:pointer) == 4 ? 32 : 64
          elsif jruby?
            Integer(ENV_JAVA['sun.arch.data.model'])
          else
            1.size == 4 ? 32 : 64
          end
        )
      end