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Re: [libvirt] [Xen-devel] [PATCH] libxl: include a XLU_Config in _libxlDriverConfig



On Thu, May 07, 2015 at 10:20:23AM +0200, Olaf Hering wrote:
> On Wed, May 06, Wei Liu wrote:
> 
> > On Wed, May 06, 2015 at 10:58:11AM +0200, Olaf Hering wrote:
> > > On Wed, May 06, Olaf Hering wrote:
> > > 
> > > > Since libvirtd runs forever there is very little code to undo most
> > > > things. But I will see if there is any unload function, did not actively
> > > > look for such thing.
> > > 
> > > Looking through libxlStateDriver it seems that libxl and libxlu remains
> > > as is. Not sure if thats supposed that way or if perhaps libxl should be
> > > fully reinitialized during ->stateReload, and if logfiles should be
> > > closed in ->stateCleanup.
> > > 
> > 
> > FWIW libxl ctx is destroy in libxlDriverConfigDispose. You can probably
> > just call xlu_cfg_destroy there.
> 
> In libvirt libxlDriverConfigDispose calls both libxl_ctx_free and
> xtl_logger_destroy. Both functions check if the input is valid, just
> xlu_cfg_destroy dereferences the input unconditionally. Should
> xlu_cfg_destroy be changed to do nothing if it gets passed a NULL
> pointer?
> 

That is orthogonal to this patch. I don't particularly care if it's
NULL-tolerant or not. In any case,  You will need to check validity for
older libxl's xlu_cfg_destroy.

Wei.

> Olaf


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