[vtkusers] SmartPointer does not seem to free memory!? Bug!?

[Bill Lorensen]

David is correct. For VTK you must explicitly use SmartPointer.
However, in ITK, the :New() produces a smart pointer automagiclaly.

Bill

On Wed, Dec 9, 2009 at 9:45 PM, David Doria <daviddoria+vtk at gmail.com> wrote:
> Thanks,
>
> David
>
>
>
> On Wed, Dec 9, 2009 at 9:34 PM,  <itkvtk123 at gmx.net> wrote:
>> Hey vtkusers,
>>
>> today I encountered a problem, that local vtk smartpointers seem not to free their memory after they go out of scope.
>> I wrote a minimal example to illustrate my problem:
>>
>>
>> #include "vtkOrientedGlyphContourRepresentation.h"
>> #include "vtkImageViewer2.h"
>> #include <iostream>
>>
>> int main()
>> {
>>        for(int i = 999; i >= 0; i--)
>>        {
>>                std::cout << i << std::endl;
>>
>>                vtkOrientedGlyphContourRepresentation* contour = vtkOrientedGlyphContourRepresentation::New();
>>                contour->SetRenderer(vtkImageViewer2::New()->GetRenderer());
>>        }
>>
>>        //idle
>>        int wait;
>>        std::cin >> wait;
>>
>>        return 0;
>> }
>>
>> This code creates 999 times a local vtk-contour and a local vtkImageviewer and adds the renderer of the viewer to the contour.
>> Since all variables are local, I would expect that it gets destroyed after the for-loop is over.
>> (actually I would even expect it gets destroyed after each iteration)
>>
>> But when I have a look at the memory usage, it does not seem to free anything! This for loop (999 times) causes about 130 MB, which are still in use when I reach the input line (std::cin).
>>
>> Do I miss something?
>> Why does something like
>>
>> void myFunction()
>> {
>>  vtkImageViewer2::New();
>> }
>>
>> eat up memory???
>>
>>
>> Thanks a lot guys.
>> Bye
>> --
>> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
>> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
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>
> Unless I'm misunderstanding, you need to actually use smart pointers
> if you want them to work!
>
> replace
> vtkOrientedGlyphContourRepresentation* contour =
> vtkOrientedGlyphContourRepresentation::New();
>
> with
> vtkSmartPointer<vtkOrientedGlyphContourRepresentation> contour =
> vtkSmartPointer<vtkOrientedGlyphContourRepresentation>::New();
>
> and be sure to #include <vtkSmartPointer.h>
>
> Let us know if that does the trick.
>
> David
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
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>