Hello Theodore,
Hall, Theodore wrote:
> OpenSG 2.0 (64-bit Vista DLL) is crashing in its exit routines after
> having loaded a ".wrl" file into a SimpleSceneManager. The app runs
> fine until the window closes and the app quits. Also, it exits cleanly
> if I use a hard-coded scene instead of loading from a "wrl" file.
>
> It fails differently depending on whether I explicitly call osgExit(),
> or let the atexit functions handle the cleanup, but it fails in either
> case.
[SNIP - backtraces/notes]
> * I call OSG::osgExit() just before the App object goes out of scope
> and its d'tor is called. There are no explicit references to any
> OSG objects beyond that point, but there is a chain of d'tors for
> OSG::RefCountPtrs, OSG::RecordedRefCountPolicys, and
> boost::shared_ptrs
so it looks like this:
{
App app;
// ...
OSG::osgExit();
}
? Basically the problem is that you shut down OpenSG while OpenSG
objects are still alive, something the system does not deal well with.
Try this:
{
{
App app;
// ...
}
OSG::osgExit();
}
> * I note that there are two OSG::SimpleSceneManagerRefPtr's referencing
> the same object, to be cleaned up in the d'tor chain. Is that a
> problem?
I don't think that is a problem. Multiple pointer to the same object are
fine and the ref count should take care of destroying the object exactly
once, after all pointers are gone.
> (And why would that be sensitive to whether or not the
> scene was loaded from a ".wrl" file?)
I suspect that is just a coincidence. hings loaded from a file tend to
create more containers so the chance for one of them crashing on exit
gets higher.
Cheers,
Carsten
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