[MAPSERVER-USERS] detecting memory leaks in java mapscript

[Tamas Szekeres]

Rich,

Have you tried making a threadtest with your mapfile? The treadtest
option is a part of the java mapscript package.  Does it seem to
reproduce the issue?
You should anyway prepare a simple example along with some test data
to be able to inspect the problem.

Best regards,

Tamas


2008/2/20, rich.fromm <nospam420 at yahoo.com>:
>
> Any advice about tracking down memory leaks that might exist in java
> mapscript?
>
> For the context of why I'm trying to do this, see the following thread:
>
>   http://www.nabble.com/thread-safety-to15514019.html
>
> I installed the debian sarge backport of valgrind (valgrind-3.2.0-Debian),
> and
> tried invoking java prefaced with:
>
>   valgrind --leak-check=full --smc-check=all -v
>
> No leaks were reported, but I don't think it really checked where I wanted
> it
> to check.  libmapscript.so is loaded with the following:
>
>          System.loadLibrary("mapscript");
>
> And from the output it doesn't look like valgrind is actually instrumenting
> that library, and I can't figure out how to tell it to explicitly instrument
> a
> dynamically loaded library.
>
> Yet the valgrind FAQ:
>
>   http://valgrind.org/docs/manual/faq.html#faq.java
>
> does indicate that this might at least be possible:
>
> --- begin ---
> in theory Valgrind can run any Java program just fine, even those that use
> JNI and are partially implemented in other languages like C and C++.  In
> practice, Java implementations tend to do nasty things that most programs
> do not, and Valgrind sometimes falls over these corner cases.
> --- end ---
>
> Sorry if this is more appropriately a valgrind question and not a mapserver
> question, but I saw valgrind mentioned in a few places:
>
>   HISTORY.TXT
>   http://trac.osgeo.org/mapserver/ticket/2412
>
> so I thought that maybe someone here might have experience as it relates to
> this specific case.
>
> - Rich
>
> --
> View this message in context: http://www.nabble.com/detecting-memory-leaks-in-java-mapscript-tp15580371p15580371.html
> Sent from the Mapserver - User mailing list archive at Nabble.com.
>
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