On 6/1/23 20:58, Breno Guimarães wrote:
> I use that pattern all the time. It's useful.
> Worth mentioning it's not fool proof.
> Developers will often search for something in the container, returning
> the iterator.
> Then the iterator outlives the locked scope and things go sour.

Well then either you lock every single object with some wrapper (or
root_ptr or atomic<shared_ptr>):
https://fekir.info/post/sharing-data-between-threads/#_bind-the-data-and-mutex-together

Or you define an undeclared behavior for nested objects going out of scope.

> Em qui., 1 de jun. de 2023 21:54, Phil Bouchard <boost_at_[hidden]
> <mailto:boost_at_[hidden]>> escreveu:
>
>
>
> On 6/1/23 20:50, Breno Guimarães wrote:
> > Ok, it didn't change anything. You still need to think and be
> carefully
> > explicit about the locking scope.
> > I guess folks were just picking on the point that it's impossible
> for
> > the compiler to know the scope. It must be informed by the developer.
> > So everyone is aligned then.
>
> Thanks.
>
> So we would just need to be minimally explicit at the semantic level
> and
> to add "thread and scope recursive" mutices.
>
>
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