[PATCH] malloc: Count tcache entries downwards

[Cupertino Miranda]

On 07-05-2025 13:42, Wilco Dijkstra wrote:
> Hi Cupertino,
> 
>> I wonder if we do not have a race around mallopt already.
>> First look at the do_set_... functions seem to change shared variables
>> not really taking any consideration for concurrent accesses.
> 
> We do indeed. It's probably not a huge issue that there is no use of
> atomics (only a few older targets will have issues), however none of the
> code was designed with concurrent changes of the globals in mind.
> So the same global can change when you read it multiple times,
> and you have to somehow deal with that correctly...

Right! Some weird side effects could happen in those cases.

> 
> Cheers,
> Wilco