Method: ALib::Util#child_object

Defined in:

lib/alib-0.5.1/util.rb

#child_object ⇒ Object

# File 'lib/alib-0.5.1/util.rb', line 1230

def child_object
#--{{{
  r, w = IO.pipe
  IO.popen('-') do |pipe|
    if pipe
      w.close
      buf = pipe.read
      Process.wait
      unless $? == 0
        loaded = Marshal.load r.read
        case loaded
          when Exception
            raise loaded
          else
            klass, message, backtrace = loaded
            e = klass.new message
            e.set_backtrace backtrace
            raise e
        end
      end
      Marshal.load(buf)
    else
      r.close
      begin
        print(Marshal.dump(yield))
      rescue Exception => e
        dumped =
          begin
            Marshal.dump e # we can't do this in ruby 1.8.1
          rescue
            Marshal.dump [e.class, e.message, e.backtrace]
          end
        w.write dumped
        exit! 42
      end
    end
  end
ensure
  r.close rescue nil
#--}}}
end