[vtkusers] Java vtkPanel

[Sebastien Jourdain]

Hi Kenji,

You can look at what we are doing with the delete() method of vtkPanel
(knowing that we leak on Linux instead of crashing).
But I'm guessing I see 3 possible issue in your code.

1) You should try to detach your renderWindowPanel instance from the parent
JFrame.
2) Then you should set it to null before
calling vtkObject.JAVA_OBJECT_MANAGER.gc(false);
3) And in any case, you should not call Delete() on it.

I'm thinking your code may cleanup its memory but not the first time you do
it. After 3 times, you only cleared the first allocated memory.

Hope that helps,

Seb

PS: If ever you want to contribute your native library loader, please feel
free to do so, I can facilitate the process. ;-)

On Mon, Apr 18, 2016 at 2:30 PM, Kenji Tsumura <
kenji.tsumura at neosoftmedical.com> wrote:

> Hi,
>
>
>
> I have a Java application that use vtkPanel. Precisely, I made a class
> that extends vtkRenderWindowPanel. When an object of the class is no more
> used, I would like to dispose the object. But I couldn’t dispose it no
> matter how.  Java VisualVM indicates the object is JNI global reference.
> So  how can I dispose it? I used the Delete method and called
> vtkObject.JAVA_OBJECT_MANAGER.gc(false), but it didn’t work (it works for
> other VTK objects). The attached file is a simple test code that
> demonstrates vtkRenderWindowPanel is never disposed.
>
>
>
> I have seen similar post in the past, but never be answered in the way I
> hope. So I decided to post. I would appreciate any advice.
>
> Thank you,
>
>
>
> Kenji
>
>
>
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