[Cuis-dev] FW: FW: Freezing UI - can't interrupt via Alt+.

[Juan Vuletich]

Hi Jaromir,

You are right, and your code is safer.

But I don't think this problem grants adding a class variable to 
SystemDictionary. I just pushed an update that calls 
#valueUnpreemptively instead.

Thanks,

On 7/9/2022 8:17 AM, Jaromir Matas via Cuis-dev wrote:
>
> Hi Juan,
>
> I’ve stumbled upon this irregularity:
>
> If you run this in the Workspace…
>
> [Smalltalk installLowSpaceWatcher] fork.
>
> [Smalltalk installLowSpaceWatcher] fork
>
> … the system ends up with two processes running the #lowSpaceWatcher 
> method; the root cause is #installLowSpaceWatcher runs unprotected 
> against multiple concurrent invocations.
>
> I’d suggest running the # installLowSpaceWatcher’s code as the 
> Semaphore >> #critical section: see attached changeset with a more 
> detailed description in the method comment. Please feel free to modify 
> in any way :)
>
> Thanks for your opinion,
>
> Jaromir
>
> --
>
> *Jaromír Matas*
>
> mail at jaromir.net
>
>

-- 
Juan Vuletich
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