From: Ferenc Engard <engard@...>
Date: 2002-09-01T02:17:20+09:00
Subject: Re: BUG: threads and ruby/tk

Hello,

> > Here is the code:
> [snippits]
> > --------------------------------
> > $count=TkVariable.new "start"
> > t=Thread.new {
> >     loop {
> >         $count.value="blah"
> >     }
> > }
> > Tk.mainloop
> > --------------------------------
> 
> Classic problem.
> 
> You set Tk stuff from a second thread, where the mainloop expects to be
> the only one doing so. In other words, race conditions. The result:
> totally weird behaviour. I would be curious whether other toolkits suffer
> from this, too.
> 
> The solution is called TkAfter and I should probably write a chapter about
> it in my tutorial.

Yeah, the example helped a lot. Especially, my program was a
graph-drawing program, where one loop lasted cca. 2.3 seconds with my
thread-solution. Now it takes 0.08 seconds. :-))))  BIG difference...

Thank you:
Circum