[izpack-devel] Problems with VM 1.5

Elmar Grom elmar at grom.net
Fri Jun 23 00:00:41 CEST 2006


there is nothing attached, I suppose the mailing list strips off

The fact that it does not just crash always or never, but just sometimes it
really strange. I wonder if it might have something to do with the dead
threads hogging some resources that are exhausted after so many tries.
Perhaps a more realistic test would be to implement the test loop in a batch
file, so that the VM actually exits before you start the next test.

If all else fails we still have the option of not deleting the DLL. That's a
bit dirty and I don't really like it, which is why I spent so much time back
then to come up with a solution for this problem. Still, it is much better
than crashing and it would not be any worse than many other applications
that clog up the temp directory with their garbage (though I did not want to
be part of that crowd).

Julien, what do you think about this approach?


-----Original Message-----
From: izpack-devel-admin at berlios.de
[mailto:izpack-devel-admin at berlios.de]On Behalf Of Bartz, Klaus
Sent: Thursday, June 22, 2006 2:24 AM
To: izpack-devel at berlios.de
Subject: RE: [izpack-devel] Problems with VM 1.5

Hi Elmar, hi all,
oops, my check in at 2006.06.20 contains a little bug.
Do not crash, but also not delete :-( Please Update it.

The free thread approach is really a nice back-door trick.
I am not happy that it seems so that a 1.5 VM do not work
right with it. My solving needs more system resources and
is slower. OK, such is live...
As more as I test it it will be more curios.
Always it crashes only if the free thread mimik is used.
But with my real installation it crashes sometimes
(10% - 30%) with 1.5.0_01, but rare (< 10% but > 0%)
with 1.5.0_06. I have made a test program which contains
only a panel which calls parent.exit(). With this it is possible
to run batch which calls it more than one time. I have made
some different versions; some without any more, some with
resources where most of it are not used really.
The simplest one (attached) crashes near 100% on my box.
If I add the registry stuff it crashes ~ 20%.
If I add the registry stuff and some resources it crashes > 50%.
This values are for 1.5.0_06. With 1.5.0_01 there are also crashes,
but really rare (3% - 4%.
Just I make new tests. I would create a zip file with which the
test installation can be builded.
I can also send the builded install.jar, but 400 KB in an EMail
can be a little bit to much.
Where we can place such things on BerliOS? ftp is not possible
for me.



>-----Original Message-----
>From: izpack-devel-admin at berlios.de
>[mailto:izpack-devel-admin at berlios.de]On Behalf Of Elmar Grom
>Sent: Wednesday, June 21, 2006 5:58 PM
>To: izpack-devel at berlios.de
>Subject: [izpack-devel] Problems with VM 1.5
>in general I do not like the free thread approach to removing
>the dlls. I
>only put that in, because I could not find any other way back
>when I wrote
>the shortcut panel. It's a rather nasty back-door trick. If
>there is another
>approach to solving this problem, then I am all for it.
>If there is a test version to verify a different
>implementation, I am happy
>to take it for a spin and let you know what I find.
>	Elmar
>izpack-devel mailing list
>izpack-devel at lists.berlios.de
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izpack-devel at lists.berlios.de

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