Re: [osg-users] CompositeViewer addView threading issue on Windows?

Tue, 18 Nov 2008 06:10:11 -0800 

Hi all,
No answers yet, so either I was too verbose and scared off people or no one has anything to say... 


I should mention, I would be interested if someone would try the example 
I attached to the last mail even on other platforms than Windows (Linux 
mostly) to see if I'm doing anything wrong in a more general sense.


Thanks in advance,

J-S


Jean-Sébastien Guay wrote:

Hi all,


We're currently creating a new app where we need to be able to create 
new views, each of which needs to have a separate graphics context 
(because they need to be attached to Qt windows - so each needs to get a 
unique window handle).



When adding views, I'm hitting what seems to be a threading issue 
(deadlock or something like that). It'll happen after adding 2, 3 or 4 
views, not always the same number, but I can rarely get more than 5 
total. On the call stack, I can see one thread per context is in 
GraphicsWindowWin32::makeCurrentImpl() (this is DrawThreadPerContext, so 
that's ok), and a third one is in ViewerBase::renderingTraversals() on a 
conditionalWait, and they all seem to be stalled there. I'll copy the 
stack traces below.



I've reproduced the problem even without Qt, by modifying osgviewer.cpp, 
adding an event handler that just creates a new view, calls 
setUpViewInWindow() and sets the scene root on it to the same as the 
first view. I've tried surrounding the addView call with stopThreading() 
and startThreading(), but it doesn't seem to change anything.



I've attached my modified osgviewer.cpp. If someone's inclined to try it 
out, just start it with cow.osg for example, and press 'a' to add a view 
(note that the 'a' key will only work on the first window).



Is there anything else I need to be careful of when adding views at run 
time? Anything I need to do to make this work?


Thanks in advance,

J-S


Stack traces:

Thread 1
=========================================================================

     [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x84 bytes   
     [EMAIL PROTECTED]()  + 0x12 bytes   
     ot11-OpenThreadsd.dll!OpenThreads::cooperativeWait(void * 
waitHandle=0x00000318, unsigned long timeout=4294967295)  Line 55 + 0x10 
bytes    C++
 > 
ot11-OpenThreadsd.dll!OpenThreads::Win32ConditionPrivateData::wait(OpenThreads::Mutex 
& external_mutex={...}, long timeout_ms=-1)  Line 109 + 0x1d bytes    C++
     
ot11-OpenThreadsd.dll!OpenThreads::Condition::wait(OpenThreads::Mutex * 
mutex=0x0237c1e4)  Line 63    C++
     osg50-osgViewerd.dll!OpenThreads::BlockCount::block()  Line 133 + 
0x17 bytes    C++
     osg50-osgViewerd.dll!osgViewer::ViewerBase::renderingTraversals() 
Line 753    C++
     osg50-osgViewerd.dll!osgViewer::ViewerBase::frame(double 
simulationTime=1.7976931348623157e+308)  Line 608 + 0xf bytes    C++
     osg50-osgViewerd.dll!osgViewer::ViewerBase::run()  Line 580 + 0x1b 
bytes    C++
     osg50-osgViewerd.dll!osgViewer::CompositeViewer::run()  Line 219    
C++
     AddView.exe!main(int argc=2, char * * argv=0x0229c828)  Line 177 + 
0xe bytes    C++

     AddView.exe!__tmainCRTStartup()  Line 597 + 0x19 bytes    C
     AddView.exe!mainCRTStartup()  Line 414    C

     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 2
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  - 0x51 bytes   
     [EMAIL PROTECTED]()  + 0xd7 bytes   
     [EMAIL PROTECTED]()  + 0x1f bytes   
     nvoglv32.dll!6970f597()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 3
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x84 bytes   
     [EMAIL PROTECTED]()  + 0x12 bytes   
     nvoglv32.dll!69705b31()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!696215b0()    
     nvoglv32.dll!69621f14()    
     nvoglv32.dll!697057a9()    
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 4
=========================================================================

     nvoglv32.dll!69621881()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!69714ba0()    
     nvoglv32.dll!6970416c()    
     [EMAIL PROTECTED]()  + 0x3b bytes   
     [EMAIL PROTECTED]()  + 0xd5 bytes   
     [EMAIL PROTECTED]()  + 0x8e bytes   

osg50-osgViewerd.dll!osgViewer::GraphicsWindowWin32::makeCurrentImplementation() 
 Line 1701 + 0x1c bytes    C++
 >    osg50-osgd.dll!osg::GraphicsContext::makeCurrent()  Line 512 + 0xf 
bytes    C++

     osg50-osgd.dll!osg::GraphicsThread::run()  Line 35    C++


ot11-OpenThreadsd.dll!OpenThreads::ThreadPrivateActions::StartThread(void 
* data=0x0232e97c)  Line 113 + 0xf bytes    C++

     msvcr80d.dll!_callthreadstartex()  Line 348 + 0xf bytes    C
     msvcr80d.dll!_threadstartex(void * ptd=0x02362ef8)  Line 331    C

     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 5
=========================================================================

     [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x6 bytes   
     nvoglv32.dll!69621949()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!69714ba0()    
     nvoglv32.dll!697046aa()    
     [EMAIL PROTECTED]()  + 0x97 bytes   
     [EMAIL PROTECTED]()  + 0x169 bytes   
     [EMAIL PROTECTED]()  + 0x8e bytes   

osg50-osgViewerd.dll!osgViewer::GraphicsWindowWin32::makeCurrentImplementation() 
 Line 1693 + 0x1c bytes    C++
 >    osg50-osgd.dll!osg::GraphicsContext::makeCurrent()  Line 512 + 0xf 
bytes    C++

     osg50-osgd.dll!osg::GraphicsThread::run()  Line 35    C++


ot11-OpenThreadsd.dll!OpenThreads::ThreadPrivateActions::StartThread(void 
* data=0x0234a61c)  Line 113 + 0xf bytes    C++

     msvcr80d.dll!_callthreadstartex()  Line 348 + 0xf bytes    C
     msvcr80d.dll!_threadstartex(void * ptd=0x02363148)  Line 331    C

     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 6
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0xc8 bytes   
     [EMAIL PROTECTED]()  - 0x4b84 bytes   
     [EMAIL PROTECTED]()  + 0x281 bytes   
     nvoglv32.dll!6970568f()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!69621c04()    
     nvoglv32.dll!69714ec9()    
     nvoglv32.dll!6962149a()    
     nvoglv32.dll!69621f14()    
     nvoglv32.dll!697057a9()    
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 7
=========================================================================

     [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x6 bytes   
     nvoglv32.dll!69621949()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!69714ba0()    
     nvoglv32.dll!697046aa()    
     [EMAIL PROTECTED]()  + 0x97 bytes   
     [EMAIL PROTECTED]()  + 0x169 bytes   
     [EMAIL PROTECTED]()  + 0x8e bytes   

osg50-osgViewerd.dll!osgViewer::GraphicsWindowWin32::makeCurrentImplementation() 
 Line 1693 + 0x1c bytes    C++
 >    osg50-osgd.dll!osg::GraphicsContext::makeCurrent()  Line 512 + 0xf 
bytes    C++

     osg50-osgd.dll!osg::GraphicsThread::run()  Line 35    C++


ot11-OpenThreadsd.dll!OpenThreads::ThreadPrivateActions::StartThread(void 
* data=0x0234b2fc)  Line 113 + 0xf bytes    C++

     msvcr80d.dll!_callthreadstartex()  Line 348 + 0xf bytes    C
     msvcr80d.dll!_threadstartex(void * ptd=0x023635e8)  Line 331    C

     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 8
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x6 bytes   
     nvoglv32.dll!69761ee8()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!697653c6()    
     nvoglv32.dll!6973029b()    
     [EMAIL PROTECTED]()  + 0x5d bytes   
     nvoglv32.dll!69704ab9()    
     nvoglv32.dll!69714e96()    
     nvoglv32.dll!6962149a()    
     nvoglv32.dll!69621f14()    
     nvoglv32.dll!697057a9()    
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 9
=========================================================================

     [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x6 bytes   
     nvoglv32.dll!69621949()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!69714ba0()    
     nvoglv32.dll!697046aa()    
     [EMAIL PROTECTED]()  + 0x97 bytes   
     [EMAIL PROTECTED]()  + 0x169 bytes   
     [EMAIL PROTECTED]()  + 0x8e bytes   

osg50-osgViewerd.dll!osgViewer::GraphicsWindowWin32::makeCurrentImplementation() 
 Line 1693 + 0x1c bytes    C++
 >    osg50-osgd.dll!osg::GraphicsContext::makeCurrent()  Line 512 + 0xf 
bytes    C++

     osg50-osgd.dll!osg::GraphicsThread::run()  Line 35    C++


ot11-OpenThreadsd.dll!OpenThreads::ThreadPrivateActions::StartThread(void 
* data=0x022d4c04)  Line 113 + 0xf bytes    C++

     msvcr80d.dll!_callthreadstartex()  Line 348 + 0xf bytes    C
     msvcr80d.dll!_threadstartex(void * ptd=0x0237d230)  Line 331    C

     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 10
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0xc8 bytes   
     [EMAIL PROTECTED]()  - 0x4b84 bytes   
     [EMAIL PROTECTED]()  + 0x281 bytes   
     nvoglv32.dll!6970568f()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!6970490f()    
     nvoglv32.dll!69714e96()    
     nvoglv32.dll!6962149a()    
     nvoglv32.dll!69621f14()    
     nvoglv32.dll!697057a9()    
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 11
=========================================================================

     [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0x6 bytes   
     nvoglv32.dll!69621949()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!69714ba0()    
     nvoglv32.dll!697046aa()    
     [EMAIL PROTECTED]()  + 0x97 bytes   
     [EMAIL PROTECTED]()  + 0x169 bytes   
     [EMAIL PROTECTED]()  + 0x8e bytes   

osg50-osgViewerd.dll!osgViewer::GraphicsWindowWin32::makeCurrentImplementation() 
 Line 1693 + 0x1c bytes    C++
 >    osg50-osgd.dll!osg::GraphicsContext::makeCurrent()  Line 512 + 0xf 
bytes    C++

     osg50-osgd.dll!osg::GraphicsThread::run()  Line 35    C++


ot11-OpenThreadsd.dll!OpenThreads::ThreadPrivateActions::StartThread(void 
* data=0x022ef24c)  Line 113 + 0xf bytes    C++

     msvcr80d.dll!_callthreadstartex()  Line 348 + 0xf bytes    C
     msvcr80d.dll!_threadstartex(void * ptd=0x0237d6d0)  Line 331    C

     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 12
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0xc8 bytes   
     [EMAIL PROTECTED]()  - 0x4b84 bytes   
     [EMAIL PROTECTED]()  + 0x281 bytes   
     nvoglv32.dll!6970568f()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!6970490f()    
     nvoglv32.dll!69714e96()    
     nvoglv32.dll!6962149a()    
     nvoglv32.dll!69621f14()    
     nvoglv32.dll!697057a9()    
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   


Thread 13
=========================================================================

 >    [EMAIL PROTECTED]()    
     [EMAIL PROTECTED]()  + 0xc bytes   
     [EMAIL PROTECTED]()  + 0xc8 bytes   
     [EMAIL PROTECTED]()  - 0x4b84 bytes   
     [EMAIL PROTECTED]()  + 0x281 bytes   
     nvoglv32.dll!6970568f()    
     [Frames below may be incorrect and/or missing, no symbols loaded 
for nvoglv32.dll]   
     nvoglv32.dll!696fdaba()    
     nvoglv32.dll!69704735()    
     nvoglv32.dll!69714e96()    
     nvoglv32.dll!6962149a()    
     nvoglv32.dll!69621f14()    
     nvoglv32.dll!697057a9()    
     [EMAIL PROTECTED]@12()  + 0x12 bytes   
     [EMAIL PROTECTED]()  + 0x27 bytes   
     [EMAIL PROTECTED]()  + 0x1b bytes   






--
______________________________________________________
Jean-Sebastien Guay    [EMAIL PROTECTED]
                               http://www.cm-labs.com/
                        http://whitestar02.webhop.org/
_______________________________________________
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org






















					Reply via email to