[osg-users] OpenSceneGraph-3.6.5 release candidate 2 tagged, please test

[OpenSceneGraph Users]

On Wednesday, January 29, 2020 at 11:02:48 AM UTC+1, Robert Osfield wrote:
>
> Hi Fabian,
>
> On Wednesday, 29 January 2020 00:24:35 UTC, Fabian Roth wrote:
>>
>> Hi Chris,
>> I am using the latest openmw master with the compatibility patch from the 
>> pull request cherry picked, my build changes and minor other tweaks.
>> I use the osg rc with a only a cmake version change.
>> The branches are here:
>> https://github.com/Eli2/openmw/tree/eli2-openmw-static
>> https://github.com/Eli2/OpenSceneGraph/tree/eli2-openmw-static
>>
>> By now i strongly suspect i run into the "Static Initialization Order 
>> Fiasco", as described here:
>> https://cryptopp.com/wiki/Static_Initialization_Order_Fiasco
>>
>> I am currently looking into why my build uses the default font.
>>
>
> The way that the singleton methods are done is an attempt to resolve the 
> construction order issue, but l don't recall a focus on the destruction 
> side.  It could well be an issue.
>
> One workaround might be to add a mutex directly to the Font objects that 
> are being destructed rather than using the global one.  Or, to explicitly 
> clear the ObjectCache on destruction rather than leaving it to static clean 
> up.  The later would be my preferred approach.
>
> A call to:
>
>    osgDB::Registry::instance()->getObjectCache()->clear();
>
> In application clean up should be sufficient, or force the destruction of 
> the Registry singleton:
>
>    osgDB::Registry::instance(true);   // passing in true forces the 
> destruction, yes a bit hacky... the OSG has a long history so can't recall 
> the circumstances of that addition...
>
> I will hold the 3.6.5 release back till we have some conclusion on this 
> issue, in case we need to make changes to the core OSG.
>
> Cheers,
> Robert.
>
 
Hi Robert,
Thank you for the help.
Manually clearing the registry fixed my crash on exit.
I will continue testing the next rc, so far so good.

Greetings,
Fabian

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