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From "Sandro Martini (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIVOT-861) Memory leak: Window icon ImageListenerList retains reference to closed windows, preventing garbage collection
Date Mon, 14 Jan 2013 13:26:12 GMT

    [ https://issues.apache.org/jira/browse/PIVOT-861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13552649#comment-13552649
] 

Sandro Martini commented on PIVOT-861:
--------------------------------------

Hi Ɓukasz, thanks for the new info.
I can try to take a look at this (so if possible we could fix even this in 2.0.3 final), but
please could you attach here a small sample so I can see the problem ? 
This would speedup a lot my tests ...

> If I remove icon form problematic button memory accumulates in another button or ImageView
instance. 
Excuse me but it's not so clear ... could you post some screenshot ?
> Is there any fix or workaround for this problem that I can use before new version of
pivot will be released? 
First I'd say you could try to not use icons in buttons, while not use other ImageView is
not a good workaround ... so really we have to fix this.
Your application run with Java 6 or 7 (where some tricks with Classloaders is now posible,
like close) ?

                
> Memory leak: Window icon ImageListenerList retains reference to closed windows, preventing
garbage collection
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: PIVOT-861
>                 URL: https://issues.apache.org/jira/browse/PIVOT-861
>             Project: Pivot
>          Issue Type: Bug
>          Components: wtk, wtk-media
>    Affects Versions: 2.0.2
>         Environment: Windows XP, Java 1.7.0_05
>            Reporter: David Keen
>            Assignee: Sandro Martini
>             Fix For: 2.0.3
>
>         Attachments: leaktest.zip, Pivot861.launch
>
>
> When a window or dialog is opened which has an icon, after it is closed it cannot be
garbage collected because a reference is retained to it through the icon.  Removing the icon
resolves the issue.
> As far as I've investigated, the issue appears to the in the ImageListenerList which
each Image contains.  I've done a heapdump of my application and used the IBM HeapAnalyzer
which shows this list containing a reference to the window/dialog through the ImageViewSkin,
but I don't know the Pivot internals well enough to see where or how it should be released.
> I'll attach a simple test application to show the issue.

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