Q GUIDS

[Rob Shearman]

Oliver Stieber wrote:

>Hi, 
>I've had to generate some GUIDs for wined3d is there a
>wine policy on internal GUIDs or should the ones I've
>generated be ok.
>  
>

How did you generate them?

>secondly, nothing to do with GUIDS, what's the 'best'
>thread safe IUnknown enumerate to use for storing a
>heap of unique elements that will be searched for by
>the IUnknown pointer as well as emerated.
>
>It would be usefull if the enumerate didn't reference
>count because I may also need to use a call back or
>sorts so that when the ref count of the IUnknown gets
>to zero it's release can tell the enumerate to remove
>it from the list.
>  
>

Ok, it sounds like you need random removal of objects, so using the list 
implementation in include/wine/list.h would probably be best.
Put any code accessing the list in a critical section and it will be 
safe. If you want the objects to remove themselves from the list when 
they are destroyed, then you will have to add a reference to them so 
that you can use them outside the critical section. Also, you will have 
to put the adding/releasing references code in a critical section to 
ensure that there is no race between the refcount going to 0 and the 
object being removed from the list. Mike and I had to implement 
something similar to this for the stub manager in 
dlls/ole32/stubmanager.c so it may be worth having a look at it.

Rob