[libvirt] [PATCH] Free object after *Destroy in python bindings

[Daniel P. Berrange]

On Mon, May 19, 2008 at 04:21:55PM -0400, Cole Robinson wrote:
> Cole Robinson wrote:
> > The patch below fixes an issue in the python bindings with the
> > vir*Destroy methods. After the object is successfully destroyed,
> > the payload is cleared, using 'self._o = None'. This unfortunately
> > screws up virt object reference counts, as the payload should be 
> > free'd using the appropriate vir*Free function.
> > 
> 
> Hmm, I might be wrong about this. Reading the virDomainDestroy
> description in libvirt.c, destroy is supposed to free the
> domain object if the operation is successful. The qemu driver
> currently does not do this. In fact, from what I gather, none
> of the drivers do this.

The docs are wrong. Destory merely hard-kills the object being managed.
It does not free memory associated with the object.

> If the virDomainDestroy comment is correct, then the original
> python statement is sufficient, but the drivers need to have
> a few virDomainFree's added.

I believe your patch is correct - python should not be dropping its 
reference to the underlying C object, afte invoking the destroy method.
It should be only be dropped after free is called

Regards,
Dan
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