[osg-users] Hang on cooperativeWait in atexit

[Anders Backman]

Long time no see :-)

Using Osg 2.2.0.
WinXP, VisualStudio 2008.


I have a slight problem that I cant seem to get around.
We have a thread with a few OpenThread::Block, and in the destructor
of the thread we call block.release().

The thing is that the thread is still running when scope of main goes
out. So we have a atexit() function that does the deallocation, and
tries to delete the threads.
The problem is that one of the Blocks (we have two in the thread)
causes a hang in the call to: Condition::cooperativeWait().

This was mentioned as a problem here:

http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2008-March/009081.html

With no result as far as I can see...

Its a problem only under win32. I have seen it before, but at that
time we found a way around it (by shutting down the threads in main),
this time we don't.

Callstack:

	ot9-OpenThreadsd.dll!OpenThreads::Win32ConditionPrivateData::broadcast()
 Line 71	C++
 	ot9-OpenThreadsd.dll!OpenThreads::Condition::broadcast()  Line 100	C++
 	agxd.dll!OpenThreads::Block::release()  Line 69 + 0x13 bytes	C++
 	agxd.dll!agx::Block::release()  Line 540	C++
 	agxd.dll!agx::WorkThread::~WorkThread()  Line 33	C++
 	agxd.dll!agx::WorkThread::`vector deleting destructor'()  + 0x54 bytes	C++
 	agxd.dll!agx::ThreadPool::shutdown()  Line 106 + 0x2c bytes	C++



So anyone seen this (and solved it) or any ideas of what might be
behind this issue?


-- 


________________________________________________________________
 Anders Backman Email: andersb at cs.umu.se
 HPC2N/VRlab Phone: +46 (0)90-786 9936
 Umea university Cellular: +46 (0)70-392 64 67
 S-901 87 UMEA SWEDEN Fax: +46 90-786 6126
 http://www.cs.umu.se/~andersb