Making better use of Ogre's capbilities?

[jhooks1]

Could it be possible that you load the same resource name with both loaders, and it gets double-freed on exit? Just guessing.

Just tried loading with different names for each loader, still same problem.

[jhooks1]

Still trying to figure out this crash problem.

[scrawl]

First, here is the gdb crashlog for everyone, just for the sake of completeness

Code: Select all

3	Ogre::Skeleton::~Skeleton()	/usr/lib/libOgreMain.so.1.8.0	0	0x7ffff7a3db29	
4	Ogre::SharedPtr<Ogre::Skeleton>::destroy	OgreSharedPtr.h	232	0x84b1aa	
5	Ogre::SharedPtr<Ogre::Skeleton>::release	OgreSharedPtr.h	218	0x847a1e	
6	Ogre::SharedPtr<Ogre::Skeleton>::~SharedPtr	OgreSharedPtr.h	155	0x84792f	
7	Ogre::SkeletonPtr::~SkeletonPtr	OgreSkeleton.h	470	0x85b7c5	
8	NifOgre::NIFLoader::~NIFLoader	ogre_nif_loader.hpp	121	0x85b574	
9	__run_exit_handlers	/lib/libc.so.6	0	0x7ffff46b67c1	
10	exit	/lib/libc.so.6	0	0x7ffff46b6845	
11	__libc_start_main	/lib/libc.so.6	0	0x7ffff46a045c	
12	_start		0	0x7dc2b5	

So, the problem is apparently caused by the destructor of member NIFLoader::mSkel;

I've tried a few things without success yet, will keep trying.

[scrawl]

I might have an idea.

The NIFLoader destructor is called by _run_exit_handlers (I'm guessing this deletes all static objects). And this is run _after_ the OGRE shutdown procedure. Judging from the Ogre.log produced by the crash, Ogre has already been shutdown completely:

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22:46:18: *-*-* OGRE Shutdown
22:46:18: Unregistering ResourceManager for type Compositor
22:46:18: Unregistering ResourceManager for type Font
22:46:18: Unregistering ResourceManager for type Skeleton
22:46:18: Unregistering ResourceManager for type Mesh
22:46:18: Unregistering ResourceManager for type HighLevelGpuProgram
22:46:18: Uninstalling plugin: Cg Program Manager
22:46:18: Plugin successfully uninstalled
22:46:18: Unloading library /usr/lib/OGRE/Plugin_CgProgramManager
22:46:18: Uninstalling plugin: Octree Scene Manager
22:46:18: Plugin successfully uninstalled
22:46:18: Unloading library /usr/lib/OGRE/Plugin_OctreeSceneManager
22:46:18: Uninstalling plugin: ParticleFX
22:46:18: Plugin successfully uninstalled
22:46:18: Unloading library /usr/lib/OGRE/Plugin_ParticleFX
22:46:18: Uninstalling plugin: GL RenderSystem
22:46:18: Unregistering ResourceManager for type GpuProgram
22:46:18: ******************************
*** Stopping GLX Subsystem ***
******************************
22:46:18: Unregistering ResourceManager for type Texture
22:46:18: Plugin successfully uninstalled
22:46:18: Unloading library /usr/lib/OGRE/RenderSystem_GL
22:46:18: Unregistering ResourceManager for type Material

It's not surprising that trying to delete a SkeletonPtr after

22:46:18: Unregistering ResourceManager for type Skeleton

has already happened causes a crash.

So I would say: Either store the SkeletonPtr only temporarily (set it to Null after a NIF was loaded), or destroy the NIF loader before ogre shuts down.

[jhooks1]

Thanks , will try it out in a sec. I need to definitely learn how to use gdb, I am poking around with everything trying to solve the problem.

[scrawl]

putting mSkel.setNull(); at the bottom of NIFLoader::loadResource works, no crash

[jhooks1]

Thanks dude

[scrawl]

gdb in a nutshell

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gdb ./openmw
run --debug
(wait until crash)
bt

Edit: weren't you on win?

[jhooks1]

I'm on windows yes

[scrawl]

Well then you should probably use the VS Debugger, gdb would be for MinGW