[ http://nagoya.apache.org/jira/browse/JELLY-148?page=history ]
Paul Libbrecht updated JELLY-148:
---------------------------------
Attachment: TagScript.java
This is a simplistic approach towards the notion of "run-session". Namely...
it's using static ThreadLocal instead of instance-based.
The ThreadLocal's content is a map whose keys are the script objects.
(and disabling the WeakReference)
The ThreadLocal's content is expected to be cleared at the complete end of a
run but I didn't find the exact place yet for this (in JellyContext.run()?).
The method to clear is called clearTagHolderMap() and is public static which
makes it that every one should be able to call it, even, say, in a finally or
such.
Unit tests and my basic usage both work.
It would be interesting to see how other's would get it working.
I thought we had a good test for this but I didn't find it.
paul
> Huge memory leak resulting from the use of ThreadLocal
> ------------------------------------------------------
>
> Key: JELLY-148
> URL: http://nagoya.apache.org/jira/browse/JELLY-148
> Project: jelly
> Type: Bug
> Components: core / taglib.core
> Versions: 1.0
> Reporter: Hans Gilde
> Priority: Critical
> Fix For: 1.0
> Attachments: TagScript.java, jelly-nothreadlocal.ZIP,
> jelly-nothreadlocal2.ZIP, memory-leak-junit-test.txt,
> thread-local-memory-leak-fix-demo-parent.txt,
> thread-local-memory-leak-fix-demo.txt,
> thread-local-memory-leak-fix-final-1.txt,
> thread-local-memory-leak-fix-final-xml-tags.txt,
> thread-local-memory-leak-fix-final.txt, thread-local-memory-leak-profile.zip,
> thread-local-memory-leak.zip
>
> There is a huge memory leak that results from the TagScript's use of
> ThreadLocal.
> ThreadLocal is usually used from a staic variable, while TagScript uses it
> from an instance variable. Although this looks legal to me, it causes a huge
> memory leak.
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