Cuis Smalltalk Port

I am highly interested in any port to Cuis. 

I've had a chance to play with it and would prefer to work in it with Aida over Pharo or Squeak. Simpler, smaller, more pleasurable all the way around.

What are prerequisites that need to be added to Cuis to make it feasible to port Aida for real-world applications?

Sport? Swazoo? Zinc?

- Bob

_______________________________________________
Aida mailing list
[hidden email]
http://lists.aidaweb.si/mailman/listinfo/aida

Hi Germán,

Dne 16. 01. 2013 11:36, piše Germán Arduino:

> Hi Robert:
>
> Yes, I'm en the final steps of Sport and Swazoo ports (I've still some
> details to polish and double test the resulting work) but when finished,
> we agreed with Janko that he will try to port Aida.
>
> I will announce in Cuis list when the port of Sport and Swazoo be finished.

Perfect, hardly waiting on that :) Can you do a preliminary port of Aida
too (at least filein the code) , then send me a Cuis image to continue?

Also, if you have some non-important issues yet to solve on Swazoo and
Sport, just skip them for now. We can solve them later and in parallel
with porting Aida.

Best regards
Janko

>
>
> --
> Sincerely,
> Germán Arduino
> about.me/garduino <http://about.me/garduino>
>
> 2013/1/15 Robert Calco <[hidden email] <mailto:[hidden email]>>

>
>     I am highly interested in any port to Cuis.
>
>     I've had a chance to play with it and would prefer to work in it
>     with Aida over Pharo or Squeak. Simpler, smaller, more pleasurable
>     all the way around.
>
>     What are prerequisites that need to be added to Cuis to make it
>     feasible to port Aida for real-world applications?
>
>     Sport? Swazoo? Zinc?
>
>     - Bob
>
>     _______________________________________________
>     Aida mailing list

>     [hidden email] <mailto:[hidden email]>
>     http://lists.aidaweb.si/mailman/listinfo/aida
>
>
>
>
> <http://about.me/garduino>

>
>
> _______________________________________________
> Aida mailing list
> [hidden email]
> http://lists.aidaweb.si/mailman/listinfo/aida
>

--
Janko Mivšek
Svetovalec za informatiko
Eranova d.o.o.
Ljubljana, Slovenija
www.eranova.si
tel:  01 514 22 55
faks: 01 514 22 56
gsm: 031 674 565

_______________________________________________
Aida mailing list
[hidden email]
http://lists.aidaweb.si/mailman/listinfo/aida

Dne 16. 01. 2013 12:10, piše Germán Arduino:

>     Perfect, hardly waiting on that :) Can you do a preliminary port of Aida
>     too (at least filein the code) , then send me a Cuis image to continue?
>
>
> Yes, sure, only tell me the exact version and packages that I should filein.

This Squeak script can help you to reconstruct exact packages and their
locations:

           i := Installer monticello http: 'http://smalltalkhub.com'.
           i     project: 'mc/Sport/Sport/main';
                 install: 'Sport-2.031'.
           i     project: 'mc/Swazoo/Swazoo/main';
                 install: 'Swazoo-2.3beta3.1'.
           i     project: 'mc/Aida/Aida/main';
                 install: 'Aida6.5-interim.2'.

>     Also, if you have some non-important issues yet to solve on Swazoo and
>     Sport, just skip them for now. We can solve them later and in parallel
>     with porting Aida.
>
>
> I think that one or two are really not important, related with the port
> of TimeStamp that don't exist in Cuis.
>
> But I'm rewriting some Swazoo methods that use #fork and #forkAt:
> because in Cuis these methods do not return the process.
>
> Juan explained me that is a thing discussed in Squeak list in a moment
> of a non trivial bug that was finally founded and solved by Andreas Raab
> (RIP). Seems that the recommendation is not use #fork and #forkAt:,
> instead use #newProcess, save it in a variable and then use #resume. In
> Cuis, #fork and #forkAt: return nil.

But on Squeak fork returns a process? Because there are no problems with
it running Swazoo on Squeak.

> And the other problem is that I'm having some freezes in the image
> sometimes, after saved. I must try with a new, fresh image, installing
> all again, and debugging a bit.

This could be the same bug as Pharo once had. Some semaphore related
(not enough VM semaphores available or something). Aha, I found the
original thread:

http://forum.world.st/Too-many-semaphores-image-blocked-tt3871970.html

Janko

>
> I think that is not ready still, let me some more time to have the
> things working and repeteable between images.
>
> Germán.
>
>
>     Best regards
>     Janko
>
>     >
>     >
>     > --
>     > Sincerely,
>     > Germán Arduino
>     > about.me/garduino <http://about.me/garduino>
>     <http://about.me/garduino>
>     >
>     > 2013/1/15 Robert Calco <[hidden email]

>     <mailto:[hidden email]> <mailto:[hidden email]

>     <mailto:[hidden email]>>>
>     >
>     >     I am highly interested in any port to Cuis.
>     >
>     >     I've had a chance to play with it and would prefer to work in it
>     >     with Aida over Pharo or Squeak. Simpler, smaller, more pleasurable
>     >     all the way around.
>     >
>     >     What are prerequisites that need to be added to Cuis to make it
>     >     feasible to port Aida for real-world applications?
>     >
>     >     Sport? Swazoo? Zinc?
>     >
>     >     - Bob
>     >
>     >     _______________________________________________
>     >     Aida mailing list
>     >     [hidden email] <mailto:[hidden email]>

>     <mailto:[hidden email] <mailto:[hidden email]>>

>     >     http://lists.aidaweb.si/mailman/listinfo/aida
>     >
>     >
>     >
>     >
>     > <http://about.me/garduino>
>     >
>     >
>     > _______________________________________________
>     > Aida mailing list

>     > [hidden email] <mailto:[hidden email]>

>     > http://lists.aidaweb.si/mailman/listinfo/aida
>     >
>
>     --
>     Janko Mivšek
>     Svetovalec za informatiko
>     Eranova d.o.o.
>     Ljubljana, Slovenija

>     www.eranova.si <http://www.eranova.si>

>     tel:  01 514 22 55
>     faks: 01 514 22 56
>     gsm: 031 674 565
>     _______________________________________________
>     Aida mailing list

>     [hidden email] <mailto:[hidden email]>
>     http://lists.aidaweb.si/mailman/listinfo/aida

>
>
>
>
>
>
> _______________________________________________
> Aida mailing list
> [hidden email]
> http://lists.aidaweb.si/mailman/listinfo/aida
>

--
Janko Mivšek
Svetovalec za informatiko
Eranova d.o.o.
Ljubljana, Slovenija
www.eranova.si
tel:  01 514 22 55
faks: 01 514 22 56
gsm: 031 674 565
_______________________________________________
Aida mailing list
[hidden email]
http://lists.aidaweb.si/mailman/listinfo/aida

Dne 17. 01. 2013 13:27, piše Germán Arduino:

>     This means it is very dangerous to use the returned process in code
> that stores it in some variable
>     and checks for nil to start a new one. If this methods happens to
> return after the new process is forked,
>     chances are the code that starts all this runs again, that variable
> is nil, and a second process is forked,
>     perhaps breaking some shared state. This kind of bug is hard to spot
> and debug.
>
>     Callers wanting the new process object, should call #newProcess,
> store the answer, and then #resume.
>
>     A way to ensure this bug will not ever happen again is just to
> answer nil"
>
>     self newProcess resume.
>     ^nil

So there is a portable workaround to create a process like p := Process
new, then put some executing block to it and lastly p resume? If so, we
can rewrite all Swazoo accordingly.

> Here the image is running normal, with or without Swazoo started (I've
> not loaded Aida yet) and lot of times happens that when I re-start the
> image (the next day) it load freezed.
>
> Must investigate....

Swazoo must be stopped before image shutdown and restarted after image
start and this is done by Sport's SpEnvironment
addImageShutdownTask:for: and addImageStartupTask:for:. Thoes Cuis
support this shutdown/startup functionality? Does SpEnvironment works
corretly here?