[Fxruby-users] [Q] addInput events eating all cpu

[Laurent J. <Lau...@xr...>]

Here's the problem I am having in FreeRIDE (FOX 1.0): I use an 
addInput to listen to a file descriptor which happens to be the STDOUT 
of a remote process. I use INPUT_READ on this channel to capture the 
incoming text and display it in a FXText object.

The problem I have is when the remote process generate output at full 
speed, I can't get the FXText object to refresh and draw the line of 
text in a continuous way instead of displaying almost everything in 
one go when the remote process finally stop.

Is there a way to solve this problem? Like giving some cycles to the 
"normal" update events that will refresh the FXText widget.

Any idea is welcome

Here is the piece of code that I use for monitoring the file descriptor:

     def attach_stdout(fh)
       getApp().addInput(fh, INPUT_READ|INPUT_EXCEPT) do |sender, sel, 
ptr|
         case SELTYPE(sel)
         when SEL_IO_READ
           begin
             text = fh.sysread(100000)
             print_stdout(text)   # print the text in the FXText widget
           rescue EOFError
             detach_stdout(fh)
           end
         when SEL_IO_EXCEPT
           puts 'onPipeExcept'
         end
       end
     end

Laurent