I think is a problem with the code, like Larry says , i think is possible to free memory but the gc() doesn´t work because there are references to the Layer.
DAVID GARCIA ![]()
From: "Larry Becker" <[EMAIL PROTECTED]>
Reply-To: "List for discussion of JPP development and use." <jump-pilot-devel@lists.sourceforge.net>
To: "List for discussion of JPP development and use." <jump-pilot-devel@lists.sourceforge.net>
Subject: Re: [JPP-Devel] Question?
Date: Mon, 21 May 2007 11:55:47 -0500
Hi Craig,
Good point, however if you close the task (project) all memory is reclaimed, so it would seem to be possible to reclaim it by removing a layer.
Larry
On 5/21/07, A. Craig West <[EMAIL PROTECTED]> wrote:Do we know if this is a problem with references being hung onto
internally, or just the standard Java VM behavior where the Java VM
normally doesn't return memory to the OS?
-Craig
On 5/21/07, Stefan Steiniger < [EMAIL PROTECTED]> wrote:
> hei David,
>
> in case you don't know
> what sometimes can help a bit is to press the "garbage collect" button
> of the help/about/info tab
>
> but only sometimes :I
>
> stefan
>
> david alejandro garcia ortega schrieb:
> > Thanks Larry i will try to find a solution to the problem.
> >
> > DAVID GARCIA
> >
> > ------------------------------------------------------------------------
> > From: /"Larry Becker" < [EMAIL PROTECTED]>/
> > Reply-To: /"List for discussion of JPP development and use."
> > <jump-pilot-devel@lists.sourceforge.net >/
> > To: /"List for discussion of JPP development and use."
> > <jump-pilot-devel@lists.sourceforge.net>/
> > Subject: /Re: [JPP-Devel] Question?/
> > Date: /Mon, 21 May 2007 11:03:03 -0500/
> >
> > Hi David,
> >
> > Welcome to the list. That is an excellent question. I wish I had
> > an answer for you, but it is one of the unsolved problems with JUMP
> > (all flavors I believe). In my tests, it is not even consistent.
> > Sometimes removing a layer will free most of the memory, but usually
> > it will not.
> >
> > There have been attempts made to fix the problem in OpenJump. See
> > :
> > com.vividsolutions.jump.workbench.ui.plugin.RemoveSelectedLayersPlugIn
> > method remove(Layerable[]) which calls
> > selectedLayers[i].getLayerManager().dispose(selectedLayers[i]) and
> > does everything you could reasonably expect, however much of the
> > memory, usually all of it, is still committed after this code runs.
> >
> > Apparently some plugin(s) still have references to the disposed
> > layers. Probably via a listener of some kind, but no one has ever
> > tracked down the problem.
> >
> > David, you would be doing a great service to the whole JUMP
> > community if you could find the solution to this problem.
> >
> > regards,
> > Larry Becker
> >
> > On 5/21/07, *david alejandro garcia ortega* < [EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>> wrote:
> >
> > Hi I am working with the source code of OpenJump and i have the
> > following question:
> >
> > When I load a dataset(shapefile) commited memory is about
> > 150Mb, then when I remove the dataset the commited memory is
> > about 140Mb. Why doesn´t memory free?
> >
> > I want to free memory when the layer is turned invisible calling
> > dispose() of layer class, and when is turned visible I load the
> > featurecollection again. But this not work i can´t free memory.
> > What can i do?
> >
> > Thanks, and sorry for my English i am from México.
> >
> >
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