[ITK] Memory leaks with ITK and MFC

[Dženan Zukić]

Hi Kit,

inclusion of itkImage.h does not cause memory leaks. Inclusion of
itkImageFileReader.h creates the memory leaks, because it uses the
singleton itkImageIOFactoryRegisterManager.h. Looking at the class, it does
not have a destructor. By looking at the IO classes instantiated from there
(such as itkMetaImageIOFactory.cxx), they seem to be designed to never be
destructed thus always leaking some small amount of memory at the program
termination. I know this is annoying for those who use leak detectors, but
if am willing to bet that this issue was discussed and weighed against
alternatives before being implemented.

Regards,
Dženan

On Thu, Mar 10, 2016 at 12:18 AM, Lee, Kyungmoo <kyungmoo-lee at uiowa.edu>
wrote:

> Dear HTH, Matt, and all,
>
>
>
> I created another MFC example using CMake. My source code is in
> http://user.engineering.uiowa.edu/~kyungmle/share/MFCITK-src.zip. In my
> MFC example, I added only 2 lines (#include "itkImage.h", #include
> "itkImageFileReader.h") to MFCITKView.cpp. Adding #include
> "itkImageFileReader.h" causes memory leaks like the screenshot in
> http://user.engineering.uiowa.edu/~kyungmle/share/Screenshot-MemoryLeaks.jpg.
> Do you know why? Please help me. Thank you.
>
>
>
> Kit
>
>
>
>
>
> *From:* Dženan Zukić [mailto:dzenanz at gmail.com <dzenanz at gmail.com>]
> *Sent:* Tuesday, March 08, 2016 5:06 PM
> *To:* Lee, Kyungmoo <kyungmoo-lee at uiowa.edu>
> *Cc:* Matt McCormick <matt.mccormick at kitware.com>; community at itk.org
> *Subject:* Re: [ITK] Memory leaks with ITK and MFC
>
>
>
> Hi Kit,
>
>
>
> since you didn't use CMake to configure your project, you need to register
> IO factories
> <http://itk.org/ITKExamples/src/IO/ImageBase/RegisterIOFactories/Documentation.html>
> manually.
>
>
>
> Add to the beginning of TestMFCITK2015View.cpp:
>
> #include "itkMetaImageIOFactory.h"
>
> and in void CTestMFCITK2015View::OnTestItk():
>
> itk::MetaImageIOFactory::RegisterOneFactory(); //support .mha and .mhd
>
>
>
> With these two changes in runs on my machine.
>
>
>
> HTH
>
>
>
> On Mon, Mar 7, 2016 at 10:34 AM, Lee, Kyungmoo <kyungmoo-lee at uiowa.edu>
> wrote:
>
> Dear Matt and all,
>
>
>
> I made a simple MFC example to use ITK (
> http://user.engineering.uiowa.edu/~kyungmle/share/TestMFCITK2015.zip). I
> am using MS Windows 7, MS Visual C++ 2015, ITK-4.9.0, and CMake 3.4.3. When
> I click [Test]-[ITK] in the menu in Debug, x64 mode, the example clashes in
> itkImageFileReader.hxx. Can you check my source code? Thanks a lot!
>
>
>
> Kit
>
>
>
> *From:* Lee, Kyungmoo
> *Sent:* Tuesday, March 01, 2016 4:24 PM
> *To:* 'Matt McCormick' <matt.mccormick at kitware.com>
> *Cc:* community at itk.org
> *Subject:* RE: [ITK] Memory leaks with ITK and MFC
>
>
>
> Hi Matt,
>
>
>
> Thank you for replying. I would like to use ITK in my MFC application. It
> has another memory-related problem in my application (See the following
> figure). I guess that there is a conflict between ITK smart pointer and MFC
> structure. If you fix InsightApplications-4.8.0/ItkMFC, it would be a good
> reference for my MFC programming. Thank you so much!!!
>
>
>
> Kit
>
>
>
> -----Original Message-----
> From: Matt McCormick [mailto:matt.mccormick at kitware.com
> <matt.mccormick at kitware.com>]
> Sent: Tuesday, March 01, 2016 4:04 PM
> To: Lee, Kyungmoo <kyungmoo-lee at uiowa.edu>
> Cc: community at itk.org
> Subject: Re: [ITK] Memory leaks with ITK and MFC
>
>
>
> Hi Kit,
>
>
>
> We are in the process of deprecating InsightApplications.
>
>
>
> However, if you create an MFC application that uses ITK, there should be
> no issues or memory leaks.
>
>
>
> HTH,
>
> Matt
>
>
>
> On Mon, Feb 29, 2016 at 3:32 PM, Lee, Kyungmoo <kyungmoo-lee at uiowa.edu>
> wrote:
>
> > Dear all,
>
> >
>
> >
>
> >
>
> > When I run InsightApplications-4.8.0/ItkMFC using ITK-4.8.2, MS
>
> > Windows, and Visual Studio 2010/2012, I found memory leaks. Other
>
> > persons in the following links have the same problem. I cannot find
>
> > any solution on the web. Please help me. Thank you.
>
> >
>
> >
>
> >
>
> > https://cmake.org/pipermail/insight-users/2007-July/022885.html
>
> >
>
> > http://itk-insight-users.2283740.n2.nabble.com/No-one-knows-the-ITK-MF
>
> > C-memory-leak-problem-td7583950.html
>
> >
>
> >
>
> >
>
> > Kit
>
> >
>
> >
>
> >
>
> >
>
> > _______________________________________________
>
> > Community mailing list
>
> > Community at itk.org
>
> > http://public.kitware.com/mailman/listinfo/community
>
> >
>
>
> _______________________________________________
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>
>
>
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