<div dir="ltr"><div>Confusing.</div><div><br></div><div>Can you compile VTK with VTK_DEBUG_LEAKS set to ON (it is an advanced CMake flag) and see if you get reports of any objects leaking at exit?</div><div><br></div></div>

<div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Apr 29, 2014 at 4:40 PM, Maarten Beek <span dir="ltr"><<a href="mailto:beekmaarten@yahoo.com" target="_blank">beekmaarten@yahoo.com</a>></span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:12pt;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><div>

<span>Some additional info I found:</span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br><span></span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span>When I use SetInputConnection(), I see only one object being destructed as well (like with using SetInputData w/o RemoveAllInputs()).</span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span>However the memory usage with SetInputConnection() is 378Mb as opposed to 430Mb with SetInputData(): the difference is about 50Mb (the size of the tiff image).</span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br><span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

<span>As I said in the earlier email I sent today, I am loading 2 images into 2 different </span><span><span><span><span>ProcessorClass
 objects, or at least that's what I think. The images are similar and come from the same file, but the reader (which is destroyed by vtkSmartPointer when it gets out of scope?) cannot be that smart to realize it can tell the </span></span></span></span><span><span><span><span>ProcessorClass objects to share the image, can it?</span></span></span></span></div>

<span class="HOEnZb"><font color="#888888"><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br><span><span><span><span></span></span></span></span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span>Maarten<br></span></span></span></span></div>

</font></span><div><div class="h5"><div style="display:block"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12pt"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12pt">

 <div dir="ltr"> <font face="Arial"> On , Maarten Beek <<a href="mailto:beekmaarten@yahoo.com" target="_blank">beekmaarten@yahoo.com</a>> wrote:<br> </font> </div>  <div><div><div><div style="font-size:12pt;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

I see (only reporting lines with reference to ReferenceCount):<br clear="none"><br clear="none">-> activate()<br clear="none">vtkImageData (00000000070808D0):UnRegistered by vtkInformation(...), ReferenceCount = 3<br clear="none">

<br clear="none">vtkImageData (00000000070ADA70):UnRegistered by vtkInformation(...), ReferenceCount = 3<br clear="none"><br clear="none">->deactivate() (without RemoveAllInputs() call)<br clear="none">vtkImageData (00000000070ADA70):UnRegistered by vtkTrivialProducer (...), ReferenceCount = 2<br clear="none">

<br clear="none">vtkImageData (00000000070ADA70):UnRegistered by vtkInformation (...), ReferenceCount = 1<br clear="none"><br clear="none">vtkImageData (00000000070ADA70):Registered by
 vtkTrivialProducer (...), ReferenceCount = 2<br clear="none"><br clear="none">vtkImageData (00000000070ADA70):UnRegistered by vtkGarbageCollectorImpl (...), ReferenceCount = 0<br clear="none"><div><br clear="none"><span></span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">vtkObject (00000000070ADA70): Destructing!</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

<br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

-> activate()<br clear="none">vtkImageData (0000000006FA15D0):UnRegistered by vtkInformation(...), ReferenceCount = 3<br clear="none"><br clear="none">vtkImageData (0000000006FB0180):UnRegistered by vtkInformation(...), ReferenceCount = 3</div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

->deactivate() (with RemoveAllInputs() call)<br clear="none">vtkImageData (0000000006FA15D0):UnRegistered by vtkTrivialProducer (...), ReferenceCount = 2<br clear="none"><br clear="none">vtkImageData (0000000006FA15D0):UnRegistered by vtkInformation (...), ReferenceCount = 1<br clear="none">

<br clear="none">vtkImageData (0000000006FA15D0):Registered by vtkGarbageCollectorImpl (...), ReferenceCount = 2</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

<br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">vtkImageData (0000000006FA15D0):UnRegistered by vtkGarbageCollectorImpl (...), ReferenceCount = 0</div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

vtkObject (0000000006FA15D0): Destructing!</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none">

</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">vtkImageData (0000000006FB0180):UnRegistered by vtkTrivialProducer (...), ReferenceCount = 2<br clear="none">

<br clear="none">vtkImageData
 (0000000006FB0180):UnRegistered by vtkInformation (...), ReferenceCount = 1<br clear="none"><br clear="none">vtkImageData (0000000006FB0180):Registered by vtkGarbageCollectorImpl (...), ReferenceCount = 2</div><div><br clear="none">

</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">vtkImageData (0000000006FB0180):UnRegistered by vtkGarbageCollectorImpl (...), ReferenceCount = 0</div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

vtkObject (0000000006FB0180): Destructing!</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none">

<span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

It makes sense in my code that I create 2 copies of vtkImageData, loaded into different <span><span><span><span>ProcessorClass objects, but I don't understand
 why the first copy doesn't get destructed when I am not using </span></span></span></span><br clear="none">RemoveAllInputs()</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

<br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">Maarten<br clear="none"></div><div><div style="display:block">

 <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12pt"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12pt">

 <div dir="ltr"> <font face="Arial"> On Tuesday, April 29, 2014
 10:39:24 AM, Berk Geveci <<a href="mailto:berk.geveci@kitware.com" target="_blank">berk.geveci@kitware.com</a>> wrote:<br clear="none"> </font> </div>  <div><div><div><div dir="ltr">Hmmm. This is fishy. I wonder if there is a leak somewhere in the new code. Can you try something for me? Add a reader->GetOutput()->DebugOn() right after SetInputData() and re-run. Do you see the object reference count go to 0 in deactivate?<div>



<br clear="none"></div><div>-berk</div></div><div><br clear="none"><br clear="none"><div>On Mon, Apr 28, 2014 at 11:53 AM, Maarten Beek <span dir="ltr"><<a rel="nofollow" shape="rect" href="mailto:beekmaarten@yahoo.com" target="_blank">beekmaarten@yahoo.com</a>></span> wrote:<br clear="none">



<blockquote style="margin:0 0 0 .8ex"><div><div><div style="font-size:12pt;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><div>

Hi all,</div><div><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">I bumped into something I don't really understand:<br clear="none">



</div><div><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">void MyClass::activate()</div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

{</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span>    vtkSmartPointer<vtkTIFFReader> reader = vtkSmartPointer<vtkTIFFReader>::New();</span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span>    <...></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<span><span><span>   
 reader->Update();</span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><br clear="none">



</span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span>    m_Processor->SetInputData(reader->GetOutput());</span><br clear="none">



}</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



void MyClass::deactivate()</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">{</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<span>    if( 0 != m_Processor )</span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span>    {</span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span>    <span>    m_Processor->RemoveAllInputs();</span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span>    <span>    m_Processor->Delete();</span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span>    <span>    m_Processor = 0;<br clear="none">



</span></span></span></span></span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span>    }</span></span></span><br clear="none">



}</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



In the deactivate() function I do need the RemoveAllInputs() call to avoid a 50MB memory leak (100 slice 512x512 tiff). I don't need RemoveAllInputs() when I use SetInputConnection(reader->GetOutputPort()) in the activate() function.</div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



Why is the difference between SetInputData() and SetInputConnection() with regards to memory management?</div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<br clear="none"></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span>m_Processor is derived from vtkImageAlgorithm and has an internal pipeline inside the RequestData(), processing the image data with vtkImageConvolve, vtkImageSobel2D, vtkImageThreshold and a few more.</span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"><span><span><span><span></span></span></span></span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">

<span><span><span><span>int ProcessorClass::RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector* outputVector)</span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<span><span><span><span>{</span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span>    vtkInformation* outInfo = outputVector->GetInformationObject(0);</span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span>    vtkImageData* output = vtkImageData::SafeDownCast(outInfo->Get(vtkdataObject::DATA_OBJECT()));</span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><br clear="none"></span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span>    if( this->GetMTime() > this->BuildTime )</span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span>   
 </span>{</span></span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span>    <span>    this->buildPipeline();</span></span></span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span>    </span></span>}</span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><br clear="none"><span><span><span><span><span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span>    if( 0 != this->GetNumberOfInputConnections(0) )</span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span>    {</span></span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span><span>    <span>    this->MergeFilter->Update();</span></span></span></span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span><span><span><span>    <span>    output->ShallowCopy(this->MergeFilter->GetOutput());</span></span></span></span></span></span></span></span></span></span></span></div>



<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><span><span><span><span><span><span><span><span><span><span><span><span>   
 }</span></span></span></span></span></span></span></span></span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<br clear="none"><span><span><span><span><span><span><span><span><span><span><span><span></span></span></span></span></span></span></span></span></span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<span><span><span><span><span><span><span><span><span><span><span><span><span>    return 1;</span></span></span></span></span></span></span></span></span></span></span></span></span></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">



<span><span><span><span><span><span><span><span><span><span><span><span><span>}<span><font color="#888888"><br clear="none"></font></span></span></span></span></span></span></span></span></span></span></span></span></span></span></div>



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</span></span></span></span></div>

<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif">Maarten<br clear="none"></div></div></div></div><br clear="none">

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