[Libreoffice-qa] ESC meeting minutes: 2021-07-08

[Noel Grandin]

> * What’s cooking (Miklos)
>   + Noel looked at UNO-level weak references, performance → found a
> different solution for a11y
>
>
Our a11y is fundamentally slow because it always builds a parallel object
hierarchy of ~everything, UI and document model.

And because it makes extensive use of weak pointers, and ours are even
slower than std::weak_ptr (which is not high performance itself).

Ideally, we should be building the a11y stuff on-demand, but that it just
too deep of a change to be achievable.

I'm playing with the idea of saying:

    Everything inside the soffice binary __must__ use OWeakObject and
css::uno::WeakReference to do any weak stuff.

and then I can specialise the weak object implementation into two - one
fast one for everything inside the process, and a slow one for handling
cross-process weak pointers.
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