February 2014 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] Fosdem Videos and Pharo. 4 presentation

by FranÃ§ois Stephany

Rafael and I shot the videos but the FOSDEM staff is doing the post-processing. Sorry for the hiccups during recording by the way, it was our first time as cameramen ;) Cheers, Francois On Wed, Feb 12, 2014 at 12:21 AM, Bernardo Ezequiel Contreras < vonbecmann(a)gmail.com> wrote: > Hi, > They already know it, but they are busy. be patient > > On Sun, Feb 09, 2014 at 08:06:03PM -0200, Bernardo Ezequiel Contreras > wrote: > > Hi, > > the following video > > http://video.fosdem.org/2014/K4401/Saturday/Pharo4_Plans_and_Dreams.webm > > doesn't contain the presentation by marcus denker, instead it contains > the > > "Objective Smalltalk" presentation by Marcel Weiher. > > Could someone fix this, please? > > Thanks for letting us know. > > The video team will take a look as soon as they can, but please > understand if it takes a while as they are still busy! > > >

Feb. 12, 2014

Re: [Pharo-dev] To improve Stef's mood...

by Pavel Krivanek

It's Guille's work so it depends on him :-) If everything will go well, Pharo 4 will be already use it in time of ESUG. ;-) Cheers, -- Pavel 2014-02-12 14:59 GMT+01:00 Alexandre Bergel <alexandre.bergel(a)me.com>: > Excellent Pavel! > Will all this be demonstrated at ESUG? > > Alexandre > > > Le 12-02-2014 Ã 3:57, Pavel Krivanek <pavel.krivanek(a)gmail.com> a Ã©crit : > > Hi, > > we are now able to bootstrap the PharoKernel and get responsive image > that is able to execute scripts and process 'eval' argument. > > https://ci.inria.fr/pharo-contribution/job/PharoKernel3.0-Bootstrap/ > > It has shrinked Unicode tables, has no network support, not everything is > initialized well and the job takes 1 hr 45 min but it is important step on > our 100m competition :-) > > -- Pavel > > >

Feb. 12, 2014

Re: [Pharo-dev] To improve Stef's mood...

by Esteban Lorenzano

if all goes well, all of that will be demonstrated (and used) in pharo 4 :D Esteban On 12 Feb 2014, at 14:59, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > Excellent Pavel! > Will all this be demonstrated at ESUG? > > Alexandre > > > Le 12-02-2014 Ã 3:57, Pavel Krivanek <pavel.krivanek(a)gmail.com> a Ã©crit : > >> Hi, >> >> we are now able to bootstrap the PharoKernel and get responsive image that is able to execute scripts and process 'eval' argument. >> >> https://ci.inria.fr/pharo-contribution/job/PharoKernel3.0-Bootstrap/ >> >> It has shrinked Unicode tables, has no network support, not everything is initialized well and the job takes 1 hr 45 min but it is important step on our 100m competition :-) >> >> -- Pavel >> >>

Feb. 12, 2014

Re: [Pharo-dev] To improve Stef's mood...

by Alexandre Bergel

Excellent Pavel! Will all this be demonstrated at ESUG? Alexandre > Le 12-02-2014 Ã 3:57, Pavel Krivanek <pavel.krivanek(a)gmail.com> a Ã©crit : > > Hi, > > we are now able to bootstrap the PharoKernel and get responsive image that is able to execute scripts and process 'eval' argument. > > https://ci.inria.fr/pharo-contribution/job/PharoKernel3.0-Bootstrap/ > > It has shrinked Unicode tables, has no network support, not everything is initialized well and the job takes 1 hr 45 min but it is important step on our 100m competition :-) > > -- Pavel > >

Feb. 12, 2014

Why Smalltalk is not popular?

by askoh

The recent arguments in Smalltalk made me have an Eureka moment on why Smalltalk is not popular. Smalltalk attracts brilliant people. But these brilliant people scare others away. Instead of Showing How, they Show Off. Instead of being inclusive, they are picky. Instead of discussing, they fight. So, Smalltalkers, please be humble, friendly and pacific. Show How. Invite anyone interested to join. And let's talk normally. All the best, Aik-Siong Koh -- View this message in context: http://forum.world.st/Why-Smalltalk-is-not-popular-tp4743009.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Feb. 12, 2014

Re: [Pharo-dev] 100% CPU usage on image resume

by Sven Van Caekenberghe

Sorry, but the details matter a lot: Which image version, vm version, os ? You can use the System Reporter tool for this. Image ----- /Users/sven/Develop/Smalltalk/Pharo-Bootstrap.image Pharo3.0 Latest update: #30750 Unnamed Virtual Machine --------------- /Users/sven/Develop/Smalltalk/Pharo3.0.app/Contents/MacOS/Pharo NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 git://gitorious.org/cogvm/blessed.git Commit: 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #14535 Mac Cocoa Cog 5.8b12 21-Sep-10 >1B0534FA-246C-47C5-AB29-7A76C81CCDCB< VMMaker versionString git://gitorious.org/cogvm/blessed.git Commit: 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #14535 NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 Does this happen with a virgin image ? Probably not, what code did you load ? Sven On 12 Feb 2014, at 14:37, Holger Hans Peter Freyther <holger(a)freyther.de> wrote: > On Mon, Oct 07, 2013 at 11:19:48AM +0200, Holger Hans Peter Freyther wrote: > > Hi, > >> I saved an image and today I wanted to resume it. Everything comes up, >> for a second I can interact with it (e.g. move a window) but then the >> pharo VM goes to 100% CPU usage. I let it run while writing this email >> and it eventually aborted: > > I keep on experiencing the issue on image resume. It appears that my > timer process runs before the startUp list of DateAndTime has been > executed and then anything using DateAndTime will get stuck. > > Is this a known issue of Pharo2.0? Couldn't >>#snapshot:andQuit: of > SmalltalkImage suspend all other processes and only resume them once > the startUp list has been executed? > > Any ideas how to debug that? I have started to explore bits of the > system using the commandline feature of Pharo. > > > Backtrace of the active process that appears to take all the CPU > > All Smalltalk process stacks (active first): > Process 0x7890adb8 priority 70 > 0xbf9a5e60 M DateAndTime>normalize:ticks:base: 0x799930dc: a(n) DateAndTime > 0xbf9a5e84 M DateAndTime>ticks:offset: 0x799930dc: a(n) DateAndTime > 0xbf9a5ea8 M DateAndTime>offset: 0x79992fe4: a(n) DateAndTime > 0xbf9a5ec4 M DateAndTime>asLocal 0x79992fe4: a(n) DateAndTime > 0xbf9a5ee4 M DateAndTime>- 0x7890ac98: a(n) DateAndTime > 0xbf9a5f00 M DateAndTime>asSeconds 0x7890ac98: a(n) DateAndTime > 0xbf9a2df0 M DateAndTime>< 0x7890ac98: a(n) DateAndTime > 0xbf9a2e0c M DateAndTime(Magnitude)>> 0x79992cb0: a(n) DateAndTime > 0xbf9a2e2c M TimerScheduler>fireTimers: 0x77fdb260: a(n) TimerScheduler > 0xbf9a2e54 I [] in TimerScheduler>runTimers 0x77fdb260: a(n) TimerScheduler > 0xbf9a2e70 M BlockClosure>on:do: 0x7890acac: a(n) BlockClosure > 0xbf9a2e94 M [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher > 0xbf9a2eb4 M BlockClosure>ensure: 0x7890ae38: a(n) BlockClosure > 0xbf9a2ee0 I [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher > 0xbf9a2f00 I [] in BlockClosure>newProcess 0x7890acd4: a(n) BlockClosure > > same image some seconds later > > All Smalltalk process stacks (active first): > Process 0x7890adb8 priority 70 > 0xbf9a2d78 M Fraction>reduced 0x7ac6cb4c: a(n) Fraction > 0xbf9a2d90 M SmallInteger>/ 0x1903d=51230 > 0xbf9a2dac M DateAndTime>julianDayOffset 0x7ac6ca1c: a(n) DateAndTime > 0xbf9a2dc8 M DateAndTime>julianDayNumber 0x7ac6ca1c: a(n) DateAndTime > 0xbf9a2df0 M DateAndTime>< 0x7890ac98: a(n) DateAndTime > 0xbf9a2e0c M DateAndTime(Magnitude)>> 0x7ac6ca1c: a(n) DateAndTime > 0xbf9a2e2c M TimerScheduler>fireTimers: 0x77fdb260: a(n) TimerScheduler > 0xbf9a2e54 I [] in TimerScheduler>runTimers 0x77fdb260: a(n) TimerScheduler > 0xbf9a2e70 M BlockClosure>on:do: 0x7890acac: a(n) BlockClosure > 0xbf9a2e94 M [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher > 0xbf9a2eb4 M BlockClosure>ensure: 0x7890ae38: a(n) BlockClosure > 0xbf9a2ee0 I [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher > 0xbf9a2f00 I [] in BlockClosure>newProcess 0x7890acd4: a(n) BlockClosure > >

Feb. 12, 2014

Re: [Pharo-dev] [gsoc-mentors] GSoC: call for ideas

by Camille Teruel

Hello, Here are my proposals, ================================================== Title: Slots, batteries included Context: Pharo has recently introduced a model for first-class class layouts and instance variables (slots). This model will permit to customize the memory layout of instances of a class and the read/write logic of instance variables. However, the current compiler doesn't take the custom read/write logic into account and the implementation need some love. Goal: The student will first have to understand the model of layout and slots (http://rmod.lille.inria.fr/archives/papers/Verw11a-OOSPLA11-FlexibleObjectL…) The next step is to modify the compiler (Opal) so that it take slots into account. Then, the student will improve the current implementation: - Expand the API: Each class should responds to #slots #ownSlots, each object to #slotNamed:set:, #slotNamed:, etc... - Fix the class installer to use the new instance migration model instead of the old one. - Study whether scopes can be removed from the core model or not. - Better definition of the interactions/responsibilities of the class builder and the class installer and fix the problem of modification of anonymous classes. Then the student can provides several examples of custom slots and identify potential clients of these new facilities. Dialect: Pharo Skill level: intermediate Mentors: Camille Teruel / Martin Dias ================================================== Title: Baobab Context: Pharo sources are currently stored in a separated file (.sources). We plan to remove that file and instead store all sources in the image in AST form. But keeping all the ASTs of the system methods would cost too much memory. Bonsai, is one possible solution for saving memory: it is just a flyweight pattern for ASTs. Additionally, we want to annotate the nodes of the ASTs various informations (bindings, additional comments, discussions, false positive critics, debugging code, typing information for various pluggable type systems, statistics like code coverage, etc...). All these annotations would also take too much space in the image. Moreover, not all of them are needed by all developers. Some must be kept in the image, others not. Goal: The goal of Baobab is to offer a flexible AST annotation and serialization system. An annotation should be able to define if it's transient (kept in the image but not serialized with the AST), local (kept in the image and serialized with the AST) or remote (stored on remote repositories so that teams of developers can share and edit them). Dialect: Pharo Skill level: easy/intermediate Mentor: Camille Teruel =================================================== Title: Generic rewriting engine Context: Rewriting is an useful technique that has a lot of applications in many functional programming language. A rewriting engine that can rewrite arbitrary graph of objects would have a lot of useful applications like code refactoring and migration of instances in an alive program. Goal: The goal of this proposal is to implement a rewriting engine for arbitrary tree/graph of object. A rewriting rule must be able to define: - Patterns to match a part of the graph possibly including metavariables (variables that match subparts of the matched part) - Transformation of the matched part using the metavariables The engine is parametrized with a set of rules an a traversal of the graph (look at http://www.humane-assessment.com/blog/traversal-enabled-pharo-objects for ideas). Inspirations can be found in the pattern-matching library of Newspeak: (http://www.hpi.uni-potsdam.de/hirschfeld/publications/media/GellerHirschfel…) Skill level: intermediate Dialect: Free Mentor: Camille Teruel =================================================== Title: Object based IDE Context: An object oriented program is based on objects that send messages to other objects. However, source code and IDE shows only classes and methods. There is a huge gap between the source code that the IDEs show and the runtime entities of a program: object and messages. This gap make program comprehension difficult because it is up to the programmer to fill this gap in is head. That is certainly the reason why many Smalltalk programmers like to program in the debugger: they deal with an actual instance of their program. Goal: The goal of this proposal is to set up the first bricks toward a graphical IDE centered around objects that are alive during a program execution. The first step is to provide a view to easily navigate through a graph of objects. Then objects should be able to customize their view and several default views for common classes must be provided: Array, Dictionary, Set, etc... The final step is to be able to run a program step by step as in a debugger and display the messages sent between objects using Granovetter diagrams. Dialect: any Skill level: intermediate Mentor: Camille Teruel

Feb. 12, 2014

Re: [Pharo-dev] 100% CPU usage on image resume

by Holger Hans Peter Freyther

On Mon, Oct 07, 2013 at 11:19:48AM +0200, Holger Hans Peter Freyther wrote: Hi, > I saved an image and today I wanted to resume it. Everything comes up, > for a second I can interact with it (e.g. move a window) but then the > pharo VM goes to 100% CPU usage. I let it run while writing this email > and it eventually aborted: I keep on experiencing the issue on image resume. It appears that my timer process runs before the startUp list of DateAndTime has been executed and then anything using DateAndTime will get stuck. Is this a known issue of Pharo2.0? Couldn't >>#snapshot:andQuit: of SmalltalkImage suspend all other processes and only resume them once the startUp list has been executed? Any ideas how to debug that? I have started to explore bits of the system using the commandline feature of Pharo. Backtrace of the active process that appears to take all the CPU All Smalltalk process stacks (active first): Process 0x7890adb8 priority 70 0xbf9a5e60 M DateAndTime>normalize:ticks:base: 0x799930dc: a(n) DateAndTime 0xbf9a5e84 M DateAndTime>ticks:offset: 0x799930dc: a(n) DateAndTime 0xbf9a5ea8 M DateAndTime>offset: 0x79992fe4: a(n) DateAndTime 0xbf9a5ec4 M DateAndTime>asLocal 0x79992fe4: a(n) DateAndTime 0xbf9a5ee4 M DateAndTime>- 0x7890ac98: a(n) DateAndTime 0xbf9a5f00 M DateAndTime>asSeconds 0x7890ac98: a(n) DateAndTime 0xbf9a2df0 M DateAndTime>< 0x7890ac98: a(n) DateAndTime 0xbf9a2e0c M DateAndTime(Magnitude)>> 0x79992cb0: a(n) DateAndTime 0xbf9a2e2c M TimerScheduler>fireTimers: 0x77fdb260: a(n) TimerScheduler 0xbf9a2e54 I [] in TimerScheduler>runTimers 0x77fdb260: a(n) TimerScheduler 0xbf9a2e70 M BlockClosure>on:do: 0x7890acac: a(n) BlockClosure 0xbf9a2e94 M [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher 0xbf9a2eb4 M BlockClosure>ensure: 0x7890ae38: a(n) BlockClosure 0xbf9a2ee0 I [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher 0xbf9a2f00 I [] in BlockClosure>newProcess 0x7890acd4: a(n) BlockClosure same image some seconds later All Smalltalk process stacks (active first): Process 0x7890adb8 priority 70 0xbf9a2d78 M Fraction>reduced 0x7ac6cb4c: a(n) Fraction 0xbf9a2d90 M SmallInteger>/ 0x1903d=51230 0xbf9a2dac M DateAndTime>julianDayOffset 0x7ac6ca1c: a(n) DateAndTime 0xbf9a2dc8 M DateAndTime>julianDayNumber 0x7ac6ca1c: a(n) DateAndTime 0xbf9a2df0 M DateAndTime>< 0x7890ac98: a(n) DateAndTime 0xbf9a2e0c M DateAndTime(Magnitude)>> 0x7ac6ca1c: a(n) DateAndTime 0xbf9a2e2c M TimerScheduler>fireTimers: 0x77fdb260: a(n) TimerScheduler 0xbf9a2e54 I [] in TimerScheduler>runTimers 0x77fdb260: a(n) TimerScheduler 0xbf9a2e70 M BlockClosure>on:do: 0x7890acac: a(n) BlockClosure 0xbf9a2e94 M [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher 0xbf9a2eb4 M BlockClosure>ensure: 0x7890ae38: a(n) BlockClosure 0xbf9a2ee0 I [] in Dispatcher>dispatch 0x77fdb018: a(n) Dispatcher 0xbf9a2f00 I [] in BlockClosure>newProcess 0x7890acd4: a(n) BlockClosure

Feb. 12, 2014

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/30754 Home: https://github.com/pharo-project/pharo-core

Feb. 12, 2014

[pharo-project/pharo-core] 114dd0: 30754

by GitHub

Branch: refs/heads/3.0 Home: https://github.com/pharo-project/pharo-core Commit: 114dd0ec17caadee0346718df0f23dbf6a60807a https://github.com/pharo-project/pharo-core/commit/114dd0ec17caadee0346718d… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2014-02-12 (Wed, 12 Feb 2014) Changed paths: A ScriptLoader30.package/ScriptLoader.class/instance/pharo - scripts/script407.st A ScriptLoader30.package/ScriptLoader.class/instance/pharo - updates/update30754.st M ScriptLoader30.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Versionner-Core-Commands.package/MBAddConfigurationCommand.class/instance/execute/execute.st M Versionner-Core-Commands.package/MBCheckpointDevCommand.class/instance/execute/execute.st M Versionner-Core-Commands.package/MBCommand.class/instance/accessing-computed/projectName.st M Versionner-Core-Commands.package/MBCommand.class/instance/repositories/repositoryOfPackageNamed_.st M Versionner-Core-Model.package/MBAbstractVersionInfo.class/instance/accessing/configurationBasename.st R Versionner-Core-Model.package/extension/Class/instance/configurationBaseName.st R Versionner-Help.package/MetacelloBrowserHelp.class/README.md R Versionner-Help.package/MetacelloBrowserHelp.class/class/accessing/bookName.st R Versionner-Help.package/MetacelloBrowserHelp.class/class/accessing/introduction.st R Versionner-Help.package/MetacelloBrowserHelp.class/class/accessing/key.st R Versionner-Help.package/MetacelloBrowserHelp.class/class/accessing/pages.st R Versionner-Help.package/MetacelloBrowserHelp.class/class/defaults/builder.st R Versionner-Help.package/MetacelloBrowserHelp.class/class/pages/icon.st R Versionner-Help.package/MetacelloBrowserHelp.class/definition.st R Versionner-Help.package/MetacelloBrowserHelpBuilder.class/README.md R Versionner-Help.package/MetacelloBrowserHelpBuilder.class/definition.st R Versionner-Help.package/MetacelloBrowserHelpBuilder.class/instance/building/build.st R Versionner-Help.package/MetacelloBrowserHelpBuilder.class/instance/private/command_for_do_.st R Versionner-Help.package/MetacelloBrowserHelpBuilder.class/instance/private/createTopicFrom_.st R Versionner-Help.package/VersionnerHelp.class/README.md R Versionner-Help.package/VersionnerHelp.class/class/accessing/bookName.st R Versionner-Help.package/VersionnerHelp.class/class/accessing/introduction.st R Versionner-Help.package/VersionnerHelp.class/class/accessing/key.st R Versionner-Help.package/VersionnerHelp.class/class/accessing/pages.st R Versionner-Help.package/VersionnerHelp.class/class/defaults/builder.st R Versionner-Help.package/VersionnerHelp.class/class/pages/icon.st R Versionner-Help.package/VersionnerHelp.class/definition.st R Versionner-Help.package/VersionnerHelpBuilder.class/README.md R Versionner-Help.package/VersionnerHelpBuilder.class/definition.st R Versionner-Help.package/VersionnerHelpBuilder.class/instance/building/build.st R Versionner-Help.package/VersionnerHelpBuilder.class/instance/private/command_for_do_.st R Versionner-Help.package/VersionnerHelpBuilder.class/instance/private/createTopicFrom_.st M Versionner-Spec-Browser.package/VersionnerProjectPanel.class/instance/initialization/initializeGroupsWidget.st M Versionner-Spec-Browser.package/VersionnerProjectPanel.class/instance/initialization/initializeProjectsWidget.st R Versionner-Tests-Core-Commands.package/MBAddDescriptionCommandTest.class/README.md R Versionner-Tests-Core-Commands.package/MBAddDescriptionCommandTest.class/definition.st R Versionner-Tests-Core-Commands.package/MBAddDescriptionCommandTest.class/instance/accessing/configurationClass.st R Versionner-Tests-Core-Commands.package/MBAddDescriptionCommandTest.class/instance/accessing/configurationInfo.st R Versionner-Tests-Core-Commands.package/MBAddDescriptionCommandTest.class/instance/tests/testExecute.st M Versionner-Tests-Core-Model.package/MBConfigurationInfoTest.class/instance/tests/testInitialization.st Log Message: ----------- 30754 12847 update Versionner https://pharo.fogbugz.com/f/cases/12847/fix-rules-violations http://files.pharo.org/image/30/30754.zip

Feb. 12, 2014