[Glass] Strange behavior with ProcessLocalVariable ?

[Mariano Martinez Peck]

On Fri, Nov 22, 2013 at 6:55 PM, Dale K. Henrichs <
dale.henrichs at gemtalksystems.com> wrote:

> I'm not that familiar with the implementation of ProcessLocalVariable ...
> is it exception-based or does it associate the variables with a process?
>

The latter. Class comment of ProcessSpecificVariable says: "There are two
kinds of process-specific variables: process-local (state available
for read and write in all methods inside the process), and dynamic
variables (implementing dynamic scope)."



> What "different" bahavior are you seeing?
>

I have MyWebSession (subclass of WASession). Upong user login, I set a some
data into a subclass of ProcessSpecificVariable.
Pseudo-Example

MySession >> login
...
"after login..."
dict := Dictionary with .. "a dict with data"
MySubclassOfProcessSpecificVariable value: dict.

And then at some point later in seaside, from anyware I can do:

myDict := MySubclassOfProcessSpecificVariable value

and access the data...

So the difference is that in Pharo, the above line
MySubclassOfProcessSpecificVariable value answers the dict, while in
Gemstone answers nil.


> I guess that means that at least I'm not aware of anything that should
> behave differently ....
>
> I do wonder if you are seeing this different behavior in a GemTools
> session or topaz or during Seaside operation? .... if exceptions are making
> their way up to GemTools via Gci, then there is some potential for process
> oddities but just potential .... no smoking guns ... if the process locals
> are associated with continuations, then things can get a little more
> complicated and the possibility of bugs increase:)
>
>
This is during a GemToools session. I will try with topaz...

Thanks,



> Dale
> ------------------------------
>
> *From: *"Mariano Martinez Peck" <marianopeck at gmail.com>
> *To: *glass at lists.gemtalksystems.com
> *Sent: *Friday, November 22, 2013 12:30:19 PM
> *Subject: *[Glass] Strange behavior with ProcessLocalVariable ?
>
>
> Hi guys...I am having a different behavior in GemStone than in Pharo.
> I am using a subclass of ProcessLocalVariable  where I use #value: and
> #value to store/retrieve some stuff that belongs to the current process
> being executed.
>
> Before digging deeper...let me ask...should this work? Or there is
> something strange in GemStone?
>
> Thanks,
>
> --
> Mariano
> http://marianopeck.wordpress.com
>
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>
>


-- 
Mariano
http://marianopeck.wordpress.com
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