September 2010 - Pharo-dev - lists.pharo.org

[Pharo-project] image crash when saving a method
by Damien Pollet Sept. 29, 2010

Sept. 29, 2010

I have an image that reliably crashes the VM whenever I save a method in a particular class. I tried opening a different browser, saving an empty method, restoring the method from changesâ¦ crash, and no PharoDebug.log It seems I can still modify other classes. This is the 1.1.1 image (#11414) with a few packages (PetitParser, Filesystem, Autotest) on John's 5.8b10 VM. What to do ? -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

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Re: [Pharo-project] How to subclass Process and have it used by spawned blocks?
by StÃ©phane Ducasse Sept. 29, 2010

Sept. 29, 2010

and http://code.google.com/p/pharo/issues/list?cursor=2818 Stef On Sep 29, 2010, at 8:28 PM, StÃ©phane Ducasse wrote: > we still should integrate your changes but they require momentum and concentration which we do not have. > Stefan if you want to help you are welcome > > http://code.google.com/p/pharo/issues/detail?id=2897 > > Stef > > On Sep 29, 2010, at 7:49 PM, Eliot Miranda wrote: > >> Hi Stefan, >> >> this sounds a lot like an issue that bit someone in squeak 4.x recently and was due to a bytecode compiler bug that I fixed. I can't find or remember the email associated with this, so if anyone does remember please speak up. Stefan, you might try running this in an updated squeak 4.1 image and compare the bytecodes. If you get different bytecodes then we need to port the compiler fixes from 4.1 trunk to Pharo. >> >> HTH >> Eliot >> >> >> On Wed, Sep 29, 2010 at 10:22 AM, Stefan Marr <pharo(a)stefan-marr.de> wrote: >> Further testing reveals a strange behavior in the debugger. >> So, I am not sure where the problem is actually caused. >> >> I added a new local variable block to the method. >> block gets assigned aBlock (the parameter). >> >> If I executed Erlang spawn: [Transcript show: 'foo'], the '1 halt.' is executed as I mentioned before. >> However, the debugger does not allow me to access aBlock, there is a subscript out of bound exception. >> Interestingly, 'block' is accessible without error. >> >> >> If I now actually use 'block' instead of 'aBlock' in the executed block, then phenomena is reversed. >> Thus, the variable which is actually referenced in the code is not accessible anymore but gets somehow lost. They also get lost if I use both. >> >> >> I would still like to understand what is going on here. >> So any remarks are welcome. >> >> Thanks >> Stefan >> >> >> >> >> spawn: aBlock >> "Answer an ErlProcess running the code given in the parameter. The process isscheduled." >> | proc block | >> <primitive: 19> "Simulation guard" >> block := aBlock. >> proc := Process >> forContext: >> [1 halt. aBlock value. >> Processor terminateActive] asContext >> priority: Processor activePriority. >> proc resume. >> ^ proc >> >> >> >> On 29 Sep 2010, at 11:21, Stefan Marr wrote: >> >>> >>> On 29 Sep 2010, at 11:01, Igor Stasenko wrote: >>> >>>> On 29 September 2010 11:11, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >>>>> no idea but I want to know that too so keep us posted. >>>>> >>>> Smalltalk specialObjectsArray at: 28. >>>> Thats it, Process is a special object, recognized by VM. >>>> No other Process (sub)classes can be accepted by it. >>> Could you elaborate on that? No other process can be accepted for what? >>> Being scheduled, or being executed? >>> >>> There is also a comment in the comment of Process which suggests that it should be possible: >>> "(If anyone ever makes a subclass of Process, be sure to use allSubInstances in anyProcessesAbove:.)" >>> But even after making the change, that does not seem to be the actual problem. >>> >>> >>> The process gets execute fine. With a '1 halt.' as the first statement of the aBlock block I even get a debugger. It only fails on accessing variables referenced by the closure with an index out of bound error or something similar. >>> >>>>> Erlang>>spawn: aBlock >>>>> "Answer an ErlProcess running the code given in the parameter. >>>>> The process is scheduled." >>>>> | proc | >>>>> proc := ErlProcess >>>>> forContext: >>>>> [1 halt. aBlock value. >>>>> Processor terminateActive] asContext >>>>> priority: Processor activePriority. >>>>> proc resume. >>>>> ^ proc >>> >>> >>> Thanks and best regards >>> Stefan >>> >>> >>> -- >>> Stefan Marr >>> Software Languages Lab >>> Vrije Universiteit Brussel >>> Pleinlaan 2 / B-1050 Brussels / Belgium >>> http://soft.vub.ac.be/~smarr >>> Phone: +32 2 629 2974 >>> Fax: +32 2 629 3525 >>> >>> >>> _______________________________________________ >>> Pharo-project mailing list >>> Pharo-project(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> >> -- >> Stefan Marr >> Software Languages Lab >> Vrije Universiteit Brussel >> Pleinlaan 2 / B-1050 Brussels / Belgium >> http://soft.vub.ac.be/~smarr >> Phone: +32 2 629 2974 >> Fax: +32 2 629 3525 >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

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Re: [Pharo-project] Alien Plugin for Linux
by Marcus Denker Sept. 29, 2010

Sept. 29, 2010

On Sep 29, 2010, at 6:49 PM, Nicolas Cellier wrote: > 2010/9/29 Henrik Johansen <henrik.s.johansen(a)veloxit.no>: >> Uhm, this method (and many others in the extensions-category) have been present in their expected-by-Alien form in Pharo since at least 1.0 >> >> Probably a better idea to separate the Alien-"Core" into two packages, one which is actually needed, and one which you only need to load in really old Squeak/Cuis images in order to have it work. >> In which case you probably won't have method trailers either, and generate: #(0 0 0 0) is the proper extension. >> > > CompiledMethodTrailers default or mysterious #(0 0 0 0) codes both are > mostly unnecessary. > If I want default behaviour, why should I bother to tell what this > default is exactly ? > Let just call #generate, and obfuscate those details. > Squeak Pharo Cuis will handle these better than us (didn't verify > Cuis, but quite sure Squeak/Pharo already implement generate). > I added #generate in 3.9 and refactored everything to use it. But the closure code un-did a lot of these as it was coming from an older version (3.7 or 3.8 was the basis of Croquet, I think). Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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Re: [Pharo-project] image crash when saving a method
by StÃ©phane Ducasse Sept. 29, 2010

Sept. 29, 2010

can you file out this class and load it in a 12414 and does it crash? > I have an image that reliably crashes the VM whenever I save a method > in a particular class. Strange. > I tried opening a different browser, saving an empty method, restoring > the method from changesâ¦ crash, and no PharoDebug.log > It seems I can still modify other classes. > > This is the 1.1.1 image (#11414) with a few packages (PetitParser, > Filesystem, Autotest) on John's 5.8b10 VM. does it mean with cog? > > What to do ? > > -- > Damien Pollet > type less, do more [ | ] http://people.untyped.org/damien.pollet > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

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Re: [Pharo-project] How to subclass Process and have it used by spawned blocks?
by StÃ©phane Ducasse Sept. 29, 2010

Sept. 29, 2010

we still should integrate your changes but they require momentum and concentration which we do not have. Stefan if you want to help you are welcome http://code.google.com/p/pharo/issues/detail?id=2897 Stef On Sep 29, 2010, at 7:49 PM, Eliot Miranda wrote: > Hi Stefan, > > this sounds a lot like an issue that bit someone in squeak 4.x recently and was due to a bytecode compiler bug that I fixed. I can't find or remember the email associated with this, so if anyone does remember please speak up. Stefan, you might try running this in an updated squeak 4.1 image and compare the bytecodes. If you get different bytecodes then we need to port the compiler fixes from 4.1 trunk to Pharo. > > HTH > Eliot > > > On Wed, Sep 29, 2010 at 10:22 AM, Stefan Marr <pharo(a)stefan-marr.de> wrote: > Further testing reveals a strange behavior in the debugger. > So, I am not sure where the problem is actually caused. > > I added a new local variable block to the method. > block gets assigned aBlock (the parameter). > > If I executed Erlang spawn: [Transcript show: 'foo'], the '1 halt.' is executed as I mentioned before. > However, the debugger does not allow me to access aBlock, there is a subscript out of bound exception. > Interestingly, 'block' is accessible without error. > > > If I now actually use 'block' instead of 'aBlock' in the executed block, then phenomena is reversed. > Thus, the variable which is actually referenced in the code is not accessible anymore but gets somehow lost. They also get lost if I use both. > > > I would still like to understand what is going on here. > So any remarks are welcome. > > Thanks > Stefan > > > > > spawn: aBlock > "Answer an ErlProcess running the code given in the parameter. The process isscheduled." > | proc block | > <primitive: 19> "Simulation guard" > block := aBlock. > proc := Process > forContext: > [1 halt. aBlock value. > Processor terminateActive] asContext > priority: Processor activePriority. > proc resume. > ^ proc > > > > On 29 Sep 2010, at 11:21, Stefan Marr wrote: > > > > > On 29 Sep 2010, at 11:01, Igor Stasenko wrote: > > > >> On 29 September 2010 11:11, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > >>> no idea but I want to know that too so keep us posted. > >>> > >> Smalltalk specialObjectsArray at: 28. > >> Thats it, Process is a special object, recognized by VM. > >> No other Process (sub)classes can be accepted by it. > > Could you elaborate on that? No other process can be accepted for what? > > Being scheduled, or being executed? > > > > There is also a comment in the comment of Process which suggests that it should be possible: > > "(If anyone ever makes a subclass of Process, be sure to use allSubInstances in anyProcessesAbove:.)" > > But even after making the change, that does not seem to be the actual problem. > > > > > > The process gets execute fine. With a '1 halt.' as the first statement of the aBlock block I even get a debugger. It only fails on accessing variables referenced by the closure with an index out of bound error or something similar. > > > >>> Erlang>>spawn: aBlock > >>> "Answer an ErlProcess running the code given in the parameter. > >>> The process is scheduled." > >>> | proc | > >>> proc := ErlProcess > >>> forContext: > >>> [1 halt. aBlock value. > >>> Processor terminateActive] asContext > >>> priority: Processor activePriority. > >>> proc resume. > >>> ^ proc > > > > > > Thanks and best regards > > Stefan > > > > > > -- > > Stefan Marr > > Software Languages Lab > > Vrije Universiteit Brussel > > Pleinlaan 2 / B-1050 Brussels / Belgium > > http://soft.vub.ac.be/~smarr > > Phone: +32 2 629 2974 > > Fax: +32 2 629 3525 > > > > > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > -- > Stefan Marr > Software Languages Lab > Vrije Universiteit Brussel > Pleinlaan 2 / B-1050 Brussels / Belgium > http://soft.vub.ac.be/~smarr > Phone: +32 2 629 2974 > Fax: +32 2 629 3525 > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

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Re: [Pharo-project] Smalltalks 2010 - Declared as Important Province Event
by StÃ©phane Ducasse Sept. 29, 2010

Sept. 29, 2010

On Sep 29, 2010, at 5:33 PM, Serge Stinckwich wrote: > Yes, maybe we should send books again, because they have a long term effect ! Now we have a much better internet and pdf presence. If necessary what we could do is sponsor authors (so that some org can buy their book on lulu for a cheaper price). A university ordered 20 pharo by example and we did a discount (esug could support actions like that). Stef

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Re: [Pharo-project] Smalltalks 2010 - Declared as Important Province Event
by StÃ©phane Ducasse Sept. 29, 2010

Sept. 29, 2010

this is why ESUG is really helping helping teachers. In 2002 we sent smalltalk books to universities world wide. Stef > > > On Wed, Sep 29, 2010 at 1:20 PM, GermÃ¡n Arduino <garduino(a)gmail.com> wrote: > I would add two persons that helped me a lot to start in in the > wonderful world of > Smalltalk, they are Diego Gomez Deck and Alejandro Reimondo. > > > There are a LOT of persons who have been teaching Smalltalk since years... > Carlos Lombardi, Fernando Dodino, Nicolas Passerini, Daniel Solmirano, Hernan Wilkinson,...etc > > > They spent a lot of time to help me and the less I can do is try to help others. > > Cheers. > > > 2010/9/28 HernÃ¡n Morales Durand <hernan.morales(a)gmail.com>: > > Hi Igor, > > > > 2010/9/28 Igor Stasenko <siguctua(a)gmail.com>: > >> Guys, tell me the secret, why smalltalk is so popular in Argentina? :) > > > > There is no secret, besides the socioeconomical variables, we have > > been very lucky of having excellent teachers like Gustavo Rossi, > > MÃ¡ximo Prieto, Alejandro FernÃ¡ndez and others which risked their > > careers working hard in Education, one of the most underpaid areas in > > Argentina. > > Cheers, > > > >> I can only guess that it somehow related to mentality of people living there. > >> I hope someday i'll have a chance to visit it. > >> > >> On 28 September 2010 15:45, Alexandre Bergel <alexandre(a)bergel.eu> wrote: > >>> Hernan, this is really cool. > >>> I hope Smalltalk will bootstrap soon in Chile. > >>> > >>> Cheers, > >>> Alexandre > >>> > >>> > >>> On 27 Sep 2010, at 20:46, Hernan Wilkinson wrote: > >>> > >>>> Hi, > >>>> we just wanted to share with you that Smalltalks 2010 (the 4th Argentinean Smalltalk conference) has been declare of "public interest" at the Entre Rios province (where the city of Concepcion del Uruguay is and where the conference is going to be held). > >>>> We are very happy and proud of such recognition to Smalltalk and our community!! > >>>> We hope to see you there! > >>>> > >>>> Hernan. > >>>> > >>>> PS: Attached is the statement... although, it is is Spanish :-) > >>>> > >>>> <Nota ACTIER Smalltalk declaraciÃ³n de InterÃ©s.pdf>_______________________________________________ > >>>> Pharo-project mailing list > >>>> Pharo-project(a)lists.gforge.inria.fr > >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > >>> > >>> -- > >>> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > >>> Alexandre Bergel http://www.bergel.eu > >>> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > >>> > >>> > >>> > >>> > >>> > >>> > >>> _______________________________________________ > >>> Pharo-project mailing list > >>> Pharo-project(a)lists.gforge.inria.fr > >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > >>> > >> > >> > >> > >> -- > >> Best regards, > >> Igor Stasenko AKA sig. > >> > >> _______________________________________________ > >> Pharo-project mailing list > >> Pharo-project(a)lists.gforge.inria.fr > >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > > > > > > -- > > HernÃ¡n Morales > > Information Technology Manager, > > Institute of Veterinary Genetics. > > National Scientific and Technical Research Council (CONICET). > > La Plata (1900), Buenos Aires, Argentina. > > Telephone: +54 (0221) 421-1799. > > Internal: 422 > > Fax: 425-7980 or 421-1799. > > > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

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[Pharo-project] Calling Python from Pharo
by Alberto Bacchelli Sept. 29, 2010

Sept. 29, 2010

Hi, Is there any way to make Pharo and Python communicate? Thanks, Alberto

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Re: [Pharo-project] Statistic tools in Pharo
by Alberto Bacchelli Sept. 29, 2010

Sept. 29, 2010

Hi Alexandre, My question about a connection between Pharo and Python [1] is related to the issue you are reporting. In Python, they have numpy [2], which offers almost anything one would need for statistics, algebra, ... Instead of re-implementing everything in Pharo (aka re-inventing the wheel), imho, it would be much better to be able to exploit the good work already done by these smart people. My interest to Alien FFI is also related: Instead of using numpy, one could use the external interface offered by MATLAB [3] (in the form of C APIs) to let it do the number crunching. Even though the MATLAB external interface is very simple and clean, I have not being able to use it from Pharo, yet, because I cannot make Alien work under Linux (where my MATLAB resides). I have also tried nativeboost, but I am still not able to create the VM with the necessary plugin to make it work. It is very frustrating: Even if I am working with Fernando (who knows Alien very good), in three days we have not reach any target. It would be awesome if someone else wanted to give me a hand with this task: I believe It would be of interest for many of us. Cheers, Alberto [1] http://markmail.org/message/bvk2gkue6kd4vqzo [2] http://numpy.org/ [3] http://maxwell.me.gu.edu.au/spl/matlab-page/apiext.pdf On 28 September 2010 20:10, Alexandre Bergel <alexandre(a)bergel.eu> wrote: > Hi! > > Is there a statistic library in Pharo? > Computing the correlation, linear regression, ... > > Cheers, > Alexandre > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel Â http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

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[Pharo-project] [update 1.2] #12154
by Marcus Denker Sept. 29, 2010

Sept. 29, 2010

12154 ----- Issue 2779: Should fix fileout after 2661 Issue 2161: getRecentLocatorWithPrompt: fully duplicated in ChangeLIst and ChangeSet Issue 2823: Leap year handling in compression Issue 2969: zipping a directory Issue 2957: Removal AcornFileDirectory and RiscOS Plattform -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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