August 2012 - Esug-list - lists.esug.org

GSoC - Package management with Fuel

by Martin Dias

Hi This week has ended Google Summer of Code program 2012. I have to thank Marcus and Carlos Ferro, my mentors, as well as Mariano, Guille Polito, Camillo Bruni, and others, who collaborated in different ways during these three months. Also thank, of course, to Carla and Janko... and Google ;) The main purpose of this mail is to summarize the work done for my project, named "Package management with Fuel" [1][2]. Tools for managing code in Pharo export classes, traits, and methods as series of source definitions, which then import by evaluating them with the compiler. This is basically how FileOut/FileIn or Monticello works. This is slow on large pieces of code, so if you want to install a big package, you need a lot of time compiling it. Why should you compile it again, given that it was all compiled when you exported the package? The bytecodes will be the same again, you know... If you just could load the Classes and Compiled Methods instead of compiling it all again, you can save time. With this goal in mind, I started working in FuelPackageLoader[4] (now Tanker[3]), a prototype we wrote last year, which already exports and imports packages without using any compiler. But it has two important issues: it wasn't capable of export source code, and it wasn't able to tolerate class-shape changes in hierarchies (ie, a change on inst vars in a external superclass). So, we decided to start from scratch with a new prototype, code name Carbono. The idea was to reify how FileOut and FileIn are done, but storing binary information so that compilation can be avoided. In a nutshell, Carbono stores a package into two files: - A sources file, imitating the traditional FileOut chunk format. - A binary file, where uses Fuel[5] to serialize a series of code definitions. Each of them knows the position in the sources file where its source code counterpart is. For example, a class definition knows the position of its comment (in the case it exists), and a method definition knows the position of its source code. A basic example, to export a couple of classes: TAExport new binariesOn: aBinaryStream sourcesOn: aTextStream; behaviors: {ClassA. ClassB}; methods: {}; initializeClasses: true; run. which then you can import with: TAImport new binariesFrom: aBinaryStream sourcesFrom: aTextStream; run. Anyway, you can also choose to: - export only binaries or only sources - import only binaries (source code can be decompiled) - import only sources (via #fileIn) Mariano Martinez Peck worked a lot on it, fixing bugs, and especially optimizing it A LOT, so I hope you will enjoy his demonstration this Monday on ESUG Innovation Awards. Seems that he could export Seaside, Pier and Magritte, and import them in another image, with source code, and just in a few seconds ;) Also, some ultra confidential WikiLeaks revealed that he could export almost all Pharo packages, and import them in a kernel image, all with source codes but without using the compiler :) Note1: Tolerating class-shape changes in hierarchies is not yet done, but it should in some days. So far, the only strategy when a change is detected will be to recompile methods, but it may be more sophisticated in a not-so-far future. Note2: Although finally it was not strictly necessary, Guillermo Polito and me wrote tests for a new ClassBuilder. It is part of Slot, a kind of reification of objects layout made by Toon Verwaest and Camillo Bruni. It is too long to explain it here, but the thing is that was not an easy job, and we hope it will be integrated in Pharo. This is a work in progress, but you can install and try it on latest Pharo 2.0, evaluating: Gofer it squeaksource3: 'PharoTaskForces'; package: 'Slot'; package: 'SlotTests'; load. (Smalltalk at: #SlotVirus) perform: #spread. Gofer it squeaksource3: 'PharoTaskForces'; package: 'SlotsClassBuilderIntegration'; load. Gofer new smalltalkhubUser: 'marianopeck' project: 'Tanker'; package: 'ConfigurationOfTanker'; load. (Smalltalk at: #ConfigurationOfTanker) loadBleedingEdge. Gofer new squeaksource: 'FuelExperiments'; package: 'Carbono'; package: 'CarbonoTests'; load. Cheers, Martín [1]: http://gsoc2012.esug.org/projects/fuel-packages [2]: https://google-melange.appspot.com/gsoc/proposal/review/google/gsoc2012/tin… [3]: http://marianopeck.wordpress.com/2012/08/11/tanker-transporting-packages-wi… [4]: http://marianopeck.wordpress.com/2011/09/24/importing-and-exporting-package… [5]: http://rmod.lille.inria.fr/web/pier/software/Fuel

Aug. 24, 2012

Re: [Esug-list] Dinner in Ghent on Friday

by Sean P. DeNigris

I'm getting in Friday morning... should work... -- View this message in context: http://forum.world.st/Dinner-in-Ghent-on-Friday-tp4645064p4645115.html Sent from the ESUG mailing list archive at Nabble.com.

Aug. 23, 2012

Dinner in Ghent on Friday

by David Chisnall

Hi, Is anyone around on Friday for dinner? A couple of us are planning on leaving the Ibis Gent Opera at 7:30pm in search of food. David

Aug. 23, 2012

Pharo usage poll

by Esteban Lorenzano

Hi, sorry for multiple posts I'm running a small survey about Pharo usage... it is just to collect some minor data, not big answers, just some :) If you don't use Pharo... please ignore it. If you already answered... ignore it as well. But if you use Pharo and still didn't answer, please go to: https://docs.google.com/spreadsheet/viewform?fromEmail=true&formkey=dFZKeXU… and answer it... they are just 3 questions! Thanks, Esteban

Aug. 22, 2012

Re: [Esug-list] [vwnc] Language Translation Tools

by John McIntosh

There are a number of people on the Pharo forums who have built out the iOS Squeak VM for I'd guess closure VMs this year and there are various apps in the store based on that VM. There has been work on a JIT VM for ARM, no reason why that would not run on iOS. Apple in iOS 4.x made it possible to mmap executable pages. The issue as James mentioned is you can not download bytecodes (aka flash/java/smalltalk) or scripts from the internet, all scripts/bytecodes/etc must be in the app as submitted to Apple for approval. If you consider the Scratch.app https://github.com/johnmci/Scratch.app.for.iOS you'll find it's an objective-c app that wraps the Squeak VM and a Scratch image. Technically you could run a headless image/vm and exchange data with the Objective-C wrapper you would write. Goodness you could even do all your API interaction between the VM and Objective-C via local sockets for example. that might make debugging just that much easier On Fri, Aug 17, 2012 at 11:47 AM, James Robertson <jarober(a)gmail.com> wrote: > A few years ago John McIntosh spoke about this very thing at the Smalltalk Solutions conference. What's banned is a fully open Smalltalk system (or one open enough, like Scratch, that users can download live code at runtime). An app built in Smalltalk isn't a problem, unless you leave it open to live updates. > > None of the commercial vendors have done any work to make it possible to use their systems on IOS (or Android, for that matter). There's been a lot of work in the open source Smalltalk world in those directions. > > > On Aug 17, 2012, at 7:47 AM, stephane ducasse wrote: > >>> Hi everyone, >>> >>> do any frameworks or tools exist for VisualWorks that could help port an application (some 80+ classes only) to Objective-C++ and/or C++0x ? I'm not looking for a complete solution, just something that can save me creating hundreds of files and class skeletons by hand. >>> >>> Smalltalk is forbidden on iOS by Apple. Even if it would be allowed, I doubt I could get the VM compiled for that platform. Therefore I need a port. >> >> This is not true. Smalltalk is not forbidden. This is JIT and self modifying code. >> >> DrGeoII is going today to the AppStore. >> >>> I can imagine that associating every instance variable with a type (class) could already be sufficient to do the type inferencing for all methods. Although I have no detailed idea yet how to map both languages. It is certainly not worth the effort to brew my own solution anyway. So some already existing tool would be really nice. >>> >>> Any hint is appreciated. >>> >>> Andre >>> >>> >>> >>> _______________________________________________ >>> vwnc mailing list >>> vwnc(a)cs.uiuc.edu >>> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc >> >> >> _______________________________________________ >> vwnc mailing list >> vwnc(a)cs.uiuc.edu >> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc > > James Robertson > http://www.jarober.com > jarober(a)gmail.com > > > > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org -- =========================================================================== John M. McIntosh <johnmci(a)smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com iPhone Apps. http://www.wikiserver.com Twitter: squeaker68882 ===========================================================================

Aug. 17, 2012

Re: [Esug-list] [vwnc] Language Translation Tools

by clayton cottingham

james is correct, speak w Mr. McIntosh before esug 09 i spoke w john via email and he does have an adhoc squeak iphone app , no keyboard but it does run on the iphone, i can confirm that , and i think i showed it around at the conf to some people he sent me an ftp link for his iphone app w a mobile provisioning file but i think its best to speak w him directly , it may have been updated since then if you cant get ahold of him let me know and ill check the link and post if its not broken cheers On Fri, Aug 17, 2012 at 8:47 AM, James Robertson <jarober(a)gmail.com> wrote: > A few years ago John McIntosh spoke about this very thing at the Smalltalk Solutions conference. What's banned is a fully open Smalltalk system (or one open enough, like Scratch, that users can download live code at runtime). An app built in Smalltalk isn't a problem, unless you leave it open to live updates. > > None of the commercial vendors have done any work to make it possible to use their systems on IOS (or Android, for that matter). There's been a lot of work in the open source Smalltalk world in those directions. > > > On Aug 17, 2012, at 7:47 AM, stephane ducasse wrote: > >>> Hi everyone, >>> >>> do any frameworks or tools exist for VisualWorks that could help port an application (some 80+ classes only) to Objective-C++ and/or C++0x ? I'm not looking for a complete solution, just something that can save me creating hundreds of files and class skeletons by hand. >>> >>> Smalltalk is forbidden on iOS by Apple. Even if it would be allowed, I doubt I could get the VM compiled for that platform. Therefore I need a port. >> >> This is not true. Smalltalk is not forbidden. This is JIT and self modifying code. >> >> DrGeoII is going today to the AppStore. >> >>> I can imagine that associating every instance variable with a type (class) could already be sufficient to do the type inferencing for all methods. Although I have no detailed idea yet how to map both languages. It is certainly not worth the effort to brew my own solution anyway. So some already existing tool would be really nice. >>> >>> Any hint is appreciated. >>> >>> Andre >>> >>> >>> >>> _______________________________________________ >>> vwnc mailing list >>> vwnc(a)cs.uiuc.edu >>> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc >> >> >> _______________________________________________ >> vwnc mailing list >> vwnc(a)cs.uiuc.edu >> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc > > James Robertson > http://www.jarober.com > jarober(a)gmail.com > > > > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org -- Clayton Cottingham - WinterMarket Networks Phone: (604) 417-3254 (702) 426-4465 http://www.wintermarket.net aim: drfrogrx msn: drfrog666(a)hotmail.com gmail: drfrog666(a)gmail.com

Aug. 17, 2012

Re: [Esug-list] [vwnc] Language Translation Tools

by James Robertson

A few years ago John McIntosh spoke about this very thing at the Smalltalk Solutions conference. What's banned is a fully open Smalltalk system (or one open enough, like Scratch, that users can download live code at runtime). An app built in Smalltalk isn't a problem, unless you leave it open to live updates. None of the commercial vendors have done any work to make it possible to use their systems on IOS (or Android, for that matter). There's been a lot of work in the open source Smalltalk world in those directions. On Aug 17, 2012, at 7:47 AM, stephane ducasse wrote: >> Hi everyone, >> >> do any frameworks or tools exist for VisualWorks that could help port an application (some 80+ classes only) to Objective-C++ and/or C++0x ? I'm not looking for a complete solution, just something that can save me creating hundreds of files and class skeletons by hand. >> >> Smalltalk is forbidden on iOS by Apple. Even if it would be allowed, I doubt I could get the VM compiled for that platform. Therefore I need a port. > > This is not true. Smalltalk is not forbidden. This is JIT and self modifying code. > > DrGeoII is going today to the AppStore. > >> I can imagine that associating every instance variable with a type (class) could already be sufficient to do the type inferencing for all methods. Although I have no detailed idea yet how to map both languages. It is certainly not worth the effort to brew my own solution anyway. So some already existing tool would be really nice. >> >> Any hint is appreciated. >> >> Andre >> >> >> >> _______________________________________________ >> vwnc mailing list >> vwnc(a)cs.uiuc.edu >> http://lists.cs.uiuc.edu/mailman/listinfo/vwnc > > > _______________________________________________ > vwnc mailing list > vwnc(a)cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/vwnc James Robertson http://www.jarober.com jarober(a)gmail.com

Aug. 17, 2012

Re: [Esug-list] ESUG Exercise

by Philippe Marschall

On Wed, Aug 15, 2012 at 5:20 PM, Johan Brichau <johan(a)inceptive.be> wrote: > Philippe, > > If you want to investigate where to run in Gent: > http://www.jog-tours.com/home?location=1&lang=EN Thanks, I'll have a look. Cheers Philippe

Aug. 15, 2012

Re: [Esug-list] ESUG Exercise

by Johan Brichau

Philippe, If you want to investigate where to run in Gent: http://www.jog-tours.com/home?location=1&lang=EN Cheers Johan On 02 Aug 2012, at 22:49, Philippe Marschall wrote: > Hi > > Would you like to be awake and ready to focus on the outstanding talks > ESUG has to offer? Would you like to burn off some calories form all > the socializing of the previous evening? Then why not go for a run in > the morning in the amazing scenery that Ghent has to offer? So if > you're interested bring your running gear with you. > > Yes, this is a rehash of last years event which was actually quite > successful. > > Cheers > Philippe > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org

Aug. 15, 2012

Re: [Esug-list] Innovation Technology awards submission

by Jorge Ressia

No problem Jordi, Thanks a lot. On Aug 13, 2012, at 5:26 PM, Jordi Delgado wrote: > Yes, your submission is correct, no error means confirmation :-) > > With respect to the 'submissions' link, I will try to fix it > asap. Thanks for noticing (well, of course, *I* should have > noticed, I apologize for that) > > Bests, > > Jordi > > >> Hi Jordi, >> >> I submitted a tool for the innovation awards through the registration >> application, however, I did not received any confirmation. >> Is that ok? >> >> The link submissions in http://esug.org/wiki/pier/Conferences/2012 >> points to a forbidden page which asks the user to authenticate. >> But this authentication has nothing to do with the registration page. >> I would suggest changing the link to point to the registration >> application. >> >> Cheers, >> >> Jorge >> >> >> > >> _______________________________________________ >> Esug-list mailing list >> Esug-list(a)lists.esug.org >> http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org > Jorge

Aug. 13, 2012