Hello Carsten,
thank you very much for the quick respond, that helped a lot to get it
compiling.
i still face the problem that i have unresolved external symbols (although i
have linked all the opensg libs):
Error 1 error LNK2001: unresolved external symbol "private: static
class OSG::RefCountPtr<class OSG::Thread,struct OSG::MemObjRefCountPolicy>
EventManager::eventRecvThread" (?eventrecvthr...@eventmanager
@@0v?$refcount...@vthread@OSG@@umemobjrefcountpol...@2@@OSG@@A)
EventManager.obj inVRsSystemCore
seems that it can't find threading related stuff.
cheers
Georg
P.S.: I'm using Visual Studio 2008 on Windows 7, opensg generated conform to
<OPENSG_ROOT>\support\ReadMe.txt
Hello Georg,
>
> Georg Stevenson wrote:
> > One of them is following code snippet which occurs in some of the
> > multithreading relevant classes:
> >
> > TransformationPipeMT.h:
> > ...
> > OSG::Lock* pipeLock;
> > ...
> >
> > TransformationPipeMT.cpp:
> > ...
> > #ifdef OPENSG_18
> > pipeLock = dynamic_cast<OSG::Lock*>
> > (OSG::ThreadManager::the()->getLock(lockName.c_str()));
> > #else
> > #ifdef OPENSG_20
> > //TODO
> > #endif
> > ..
> >
> > First: i can't find a way to use the given LockTransitPtr (from getLock
> > ) as Lock*.
>
> the threading/synchronization objects are now correctly ref counted as
> well, so you need to hold them with e.g. OSG::LockRefPtr. The
> *TransitPtr types exist solely to prevent you from getting a raw C ptr
> because then the TransitPtr d'tor would decrement the objects ref count
> and your raw C ptr would point to a deleted object.
>
> The above needs to become:
>
> TransformationPipeMT.h:
> OSG::LockRefPtr pipeLock;
>
> TransformationPipeMT.cpp:
> pipeLock = OSG::dynamic_pointer_cast<OSG::Lock>(
> OSG::ThreadManager::the()->getLock(lockname.c_str(), false));
>
> > Second: getLock takes Argument bGlobal (true||false) which i can't find
> > documentation for.
>
> It indicates whether the object is held in a global variable (one that
> is only destroyed after osgExit has already run), because for those the
> ThreadManager behaves slightly differently when it shuts down.
>
> Cheers,
> Carsten
>
>
>
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proactively, and fine-tune applications for parallel performance.
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