🚀 go-pugleaf

Edwin G�nthner <edgue@web.de> wrote:
[snip]

> (I am using a special TableModel that uses invokeAndWait
> to notify the table listeners).
[snip]

> OK, now its time to talk about our problem: 
> sometimes we dont receive proper data. I dont have
> an IOException or any kind of visible communication
> problem; it is just that my InputStream gives
> me bytes that should not be there!
[snip]
> Most of the time that is exactly what pops up in my
> InputStream. 

> But sometimes (with JDK 1.3 SUN - and ALWAYS with 
> JDK 1.3 IBM) the InputStream gives me data like:
>  
> ??? ???? "a string"; 2424;"another string";;; 
[snip]
> I assume that it is some kind of threading problem:
> in JDK 1.3 IBM the first errors happen when the table
> should display a scrollbare and start scrolling. 

I'm guessing that it's a thread safety problem.  Just for grins,
I'd try running your app under Sun's JVM, using green threads,
and see if the problem goes away.  If it does, then you probably
need to start slinging some 'syncronized' keywords on your IO
methods and the class where the data is stored.

It looks to me like your 'display data' thread is pulling data from your
'read data from server' thread before the latter is ready.

I'm not much more than a rank beginner when it comes to threads, so
posting code snippets for me to look at will be an amusing but fruitless
exercise.  ;)

-- 
Joi Ellis (TeamB) 
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