[Gambas-user] Program runs wild

[Mike Keehan]

Eilert wrote:
> 
> 
> Charlie schrieb:
> 
>> Eilert schrieb:
>>
>>>
>>>
>>> Benoit Minisini schrieb:
>>>
>>>> On Tuesday 21 December 2004 11:45, Eilert wrote:
>>>>
>>>>> Hi Benoit,
>>>>>
>>>>> malheureusement pas
>>>>>
>>>>> It still shows the same behaviour, especially when I've switched to
>>>>> another screen and come back after some time. But even when I stay on
>>>>> the same screen and wait for half an hour or more, suddenly it 
>>>>> begins to
>>>>> accumulate processing power. First on one processor, then it 
>>>>> spreads on
>>>>> all four (it's a Xeon).
>>>>>
>>>>> So, it can't have to do with the string processing, maybe it's the 
>>>>> timer?
>>>>>
>>>>> Rolf
>>>>>
>>>>>
>>>>
>>>>
>>>> Can you send me your complete project ?
>>>>
>>>
>>> Sure, here it is - have fun with it :-)
>>>
>>> et bonne chance
>>>
>>> Rolf
>>
>>
>>
>> Salut,
>>
>> I think you cumulate processes ,
>> try that,
>> you have one process and you kill that process after work is done.
>>
>> (I haven't had a long time test with that)
> 
> 
> Well, I typed it in, it works, now we'll see if it runs nuts again :-)
> 
> Thank you for that idea, looks great:
> 
>>  IF ListBox1.ForeColor = &H000000& THEN
>>    ListBox1.ForeColor = &H005500&
>>  ELSE
>>    ListBox1.ForeColor = &H000000&
>>  ENDIF
>>  WAIT
> 
> 
> Now, when I typed that
> 
>>  EXEC [ "who" ] FOR READ AS myWho
> 
> 
> the list refused to give me "myWho", instead it inserted "Menu". So I 
> had to erase it and type myWho by hand. But it runs anyway.
> 
> Rolf
> 
> 
> 
Hi,

I've run your code on two machines - one works OK, the other has problems.

The OK system is a laptop, a Pentium III running Gentoo and kernel 
2.6.10-rc3.

The problem system is a dual Pentium III running SUSE 9.0 with kernel 
2.4.21.  If I run Kwholist and then goto another workspace/desktop and 
then switch back, the  Kwholist window stays blank.  Running 'strace 
-p PID' (the pid of the /usr/bin/gbx process) shows many sched_yield() 
calls with the occasional nano_sleep().

A Google search for these two calls shows that this sort of problem 
has been seen in the past, but I couldn't find a final solution.  It 
may be a problem with glibc or possibly with the kernel.

A workaround in Gambas (that I am using in a project) is to run one 
shell continuously in the background and send it commands as required. 
  See the Console example for how to do this.  This seems to fix my 
similar problem.

Mike