<div dir="ltr">I think to have the same problem. I have a memory leak on only one
program and it contains VTK objects created in multiple threads. But I
don't know how to fix that sorry... If anyone has the solution...<br><br><div class="gmail_quote">2008/8/12 Andreas Brüning <span dir="ltr"><<a href="mailto:mail-andi@web.de">mail-andi@web.de</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello everyone,<br>
<br>
regarding to my post from beginning of august:<br>
<br>
<a href="http://www.vtk.org/pipermail/vtkusers/2008-August/096309.html" target="_blank">http://www.vtk.org/pipermail/vtkusers/2008-August/096309.html</a><br>
<br>
i recompiled vtk with VTK_DEBUG_LEAKS flag in CMAKE and with use of vtkDebugLeaks i printed out the undeleted vtkobjects right before i close the program . I found out that if i create vtk objects in different threads the delete funtionality doesnŽt work anymore. When i only create vtkobjects in the mainThread they delete completely. But when i create different threads and in there new vtkObjects, dozens of vtkobjects remain in the memory.Even those i never created by myself. I call always the New() and Delete() methods for every vtkobject in the thread. And it happens with all kinds of vtkobjects.<br>
<br>
Here is an example of a thread-method:<br>
<br>
UINT __cdecl CImageVtkWnd::ResultView_2dMPR(LPVOID lpParameter )<br>
{<br>
<br>
//managing class of the threads<br>
CImageVtkWnd *pThis = static_cast<CImageVtkWnd *>(lpParameter);<br>
<br>
ASSERT(pThis != NULL);<br>
<br>
<br>
// Create the the renderer, window and interactor objects.<br>
vtkRenderer *vtk_Renderer = vtkRenderer::New();<br>
<br>
vtkWin32OpenGLRenderWindow *vtk_Win32OpenGLWindow = vtkWin32OpenGLRenderWindow::New();<br>
vtk_Win32OpenGLWindow->AddRenderer(vtk_Renderer);<br>
<br>
double *spacing = pThis->m_vtkvolumedata->GetSpacing();<br>
vtkImageShiftScale *vtk_scale = vtkImageShiftScale::New();<br>
<br>
vtk_scale->SetInput(pThis->m_vtkvolumedata);<br>
vtk_scale->SetShift(0.5*pThis->m_dWindow - pThis->m_dLevel);<br>
vtk_scale->SetScale(255.0/pThis->m_dWindow);<br>
vtk_scale->ClampOverflowOn();<br>
vtk_scale->SetOutputScalarTypeToUnsignedChar();<br>
<br>
vtkImageReslice *vtkImageReslicer = vtkImageReslice::New();<br>
vtkImageReslicer->SetInput(vtk_scale->GetOutput());<br>
vtkImageReslicer->SetOutputDimensionality(2);<br>
vtkImageReslicer->SetInterpolationModeToLinear();<br>
<br>
vtkImageReslicer->SetOutputSpacing(spacing);<br>
vtkImageReslicer->ReleaseDataFlagOn();<br>
<br>
vtkImageActor *vtk_actor = vtkImageActor::New();<br>
vtk_actor->SetInput(vtkImageReslicer->GetOutput());<br>
<br>
vtkTransform *vtk_slicetransform = vtkTransform::New();<br>
<br>
vtk_Renderer->AddActor(vtk_actor);<br>
vtk_Renderer->ResetCamera();<br>
vtk_Renderer->GetActiveCamera()->ParallelProjectionOn();<br>
<br>
DWORD MultiLockObj = 0;<br>
<br>
CSyncObject* pWaitObjects[] = { pThis->m_hRenderEvent, pThis->m_hTerminateLoopEvent, pThis->m_hResizeEvent };<br>
<br>
CMultiLock MultiLock( pWaitObjects, 3L );<br>
<br>
vtk_slicetransform->Translate(pThis->m_pSliceCenter[0], pThis->m_pSliceCenter[1], pThis->m_pSliceCenter[2]);<br>
vtk_slicetransform->RotateZ(-pThis->m_dSliceAngle_z);<br>
vtk_slicetransform->RotateX(-pThis->m_dSliceAngle_x);<br>
vtk_slicetransform->RotateY(-pThis->m_dSliceAngle_y);<br>
<br>
CSize *size = new CSize(600,800);<br>
<br>
unsigned char *tmpdata;<br>
<br>
BITMAPINFO bmi={0};<br>
bmi.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);<br>
bmi.bmiHeader.biPlanes=1;<br>
bmi.bmiHeader.biCompression=BI_RGB;<br>
bmi.bmiHeader.biBitCount=24;<br>
bmi.bmiHeader.biWidth=size->cx;<br>
bmi.bmiHeader.biHeight=size->cy;<br>
bmi.bmiHeader.biSizeImage=size->cx * size->cy * 24;<br>
<br>
vtk_Win32OpenGLWindow->SetSize(size->cx,size->cy);<br>
vtk_Win32OpenGLWindow->OffScreenRenderingOn();<br>
<br>
do<br>
{<br>
if(MultiLockObj == (WAIT_OBJECT_0+1))<br>
{<br>
break;<br>
}<br>
<br>
//reslice<br>
if(MultiLockObj == (WAIT_OBJECT_0+2))<br>
{<br>
vtk_slicetransform->Identity();<br>
vtk_slicetransform->Translate(pThis->m_pSliceCenter[0], pThis->m_pSliceCenter[1], pThis->m_pSliceCenter[2]);<br>
<br>
vtk_slicetransform->RotateZ(-pThis->m_dSliceAngle_z);<br>
vtk_slicetransform->RotateX(-pThis->m_dSliceAngle_x);<br>
vtk_slicetransform->RotateY(-pThis->m_dSliceAngle_y);<br>
<br>
vtkImageReslicer->SetResliceAxes(vtk_slicetransform->GetMatrix());<br>
}<br>
vtk_Win32OpenGLWindow->Render();<br>
<br>
vtk_Renderer->ResetCamera();<br>
::EnterCriticalSection(&pThis->m_cs);<br>
tmpdata = vtk_Win32OpenGLWindow->GetPixelData(0,0,size->cx-1, size->cy,1);<br>
<br>
pThis->m_lbitmap->ConvertFromDIB(&bmi,(L_UCHAR *) tmpdata);<br>
pThis->m_lbitmap->SetXResolution(pThis->m_iSource_resolution);<br>
pThis->m_lbitmap->SetYResolution(pThis->m_iSource_resolution);<br>
pThis->m_lbitmap->CalculateXYRes();<br>
pThis->m_lbitmap->GrayScale(pThis->m_iGrayscale);<br>
<br>
LeaveCriticalSection(&pThis->m_cs);<br>
<br>
<br>
::PostMessage(pThis->m_cParent->GetSafeHwnd(),WM_VTK_UPDATE_WINDOW,1,NULL);<br>
<br>
<br>
delete tmpdata;<br>
<br>
<br>
MultiLockObj = MultiLock.Lock( INFINITE, FALSE );<br>
}<br>
while(1);<br>
<br>
//Cleanup<br>
delete size;<br>
<br>
<br>
vtk_Renderer->Delete();<br>
vtk_Win32OpenGLWindow->Delete();<br>
vtk_scale->Delete();<br>
vtkImageReslicer->Delete();<br>
vtk_actor->Delete();<br>
vtk_slicetransform->Delete();<br>
<br>
::AfxEndThread( 0, true );<br>
return 0L;<br>
<br>
}<br>
<br>
<br>
<br>
<br>
Does anybody has an idea why i cant delete vtk objects in a thread? i tried already to cut the connections between vtkobjects in the different threads, but it also doesnŽt helped.<br>
<br>
Thanks in advance<br>
Andi<br>
<br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Julian Ibarz<br>
</div>