April 2015 - Pharo-dev - lists.pharo.org

source code mgmt issues in Pharo4
by Johan Brichau April 10, 2015

April 10, 2015

Hi all, Over the last week, I started working with Pharo4, mostly to make Seaside work cleanly. On several occasions, I had severe issues with the package management: - methods that were changed in a class were not recorded as âchangedâ in monticello and were absent from the published package - versions of methods disappeared (i.e. no longer accessible in the version history of a method) - looking at the âchangedâ in Monticello showed all code of the package as changed (though only a single method has changed). This makes working with Pharo4 extremely problematic. I cannot trust the source code packaging/publishing and merging anymore. I cannot discern a scenario that leads to these issues but I do have an image right now where I only changed a single method and the entire package shows up as âchangedâ. Anyone experience similar issues? Johan

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New Cog VMs available
by Eliot Miranda April 10, 2015

April 10, 2015

... at http://www.mirandabanda.org/files/Cog/VM/VM.r3308/. CogVM binaries as per VMMaker.oscog-eem.1178/r3308 Plugins: Integrate Nicolas' fixes that use positiveMachineIntegerFor: for pointers. Newspeak: Print a warning in the method shared under multiple selectors scenario. Implement outer sends as clean sends just like implicit receiver sends. Add ObjectRepresentation>>illegalClassTag and use it for initializing and unlinking implicit and outer sends. Newspeak & Sista: The multiple bytecode set block initial nil counters need to be specific to the bytecode set in effect. Spur: Implement Clement's much better solution for the stale supersend problem. Place code at the send site for super sends to follow stale forwarded receivers. This parallels the interpreter implementation. Beef up the post-become scan of send sites to unlink all send sites that link to an invalid class tag. Cogit: Optimize StackToRegisterMappingCogit>>genReturnReceiver to not load ReceiverResultReg if it already contains self. Revise method map generation to provide multiple send type annotations. Add an IsAnnotationExtension annotation type that implicitly has a zero displacement and uses its displacement bits to extend the preceeding IsSendCall annotation. This allows us to eliminate all the exotic entry-points and keep only the checked and unchecked entries. Change IA32's genPushRegisterArgsForNumArgs: to not smash TempReg now that it is used in directed super send trampolines. Use PushCq to pass small integer constants in the trampolines instead of smashing TempReg, which is now used to hold the directed supersend argument. Add support for PushCq. Could use PushCw but on x86 PushCq is a lot shorter. Mac builds: Use UTC as the timezone for the build timestamp. Using the local timezone doesn't work :(. -- best, Eliot

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broken setting in FFI
by Richard Wettel April 9, 2015

April 9, 2015

Hi I bumped into a broken setting in FFI (see attached Screenshot). After I exported the settings, every time I open an image a DNU comes to greet me: NBGlxAPI class>>moduleName: >From the implementation, it seems the setting does not make much sense. Or if it does to somebody, it is probably still missing some part. Cheers Ricky

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almost ready to release except for two bugs
by Esteban Lorenzano April 9, 2015

April 9, 2015

Hi, Soâ¦ subject says all. We need to fix this two: - https://pharo.fogbugz.com/f/cases/14606 <https://pharo.fogbugz.com/f/cases/14606> - the NOT REPORTED IN TRACKER MC BUG! (What are you thinking guys? Report, report, REPORT!â¦ I failed the Jedi examenâ¦ without report the bug does not exist) and we are ready to go. Of course, we will try to fix between today and tomorrowâ¦ but even if we succeed, since âyou shall not go into production a fridayâ, release will be monday. cheers, Esteban

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CFP IWST 2015 - Deadline extension - 17th April
by jannik laval April 9, 2015

April 9, 2015

Please note that the deadline has been extended to the 17th April 2015 . [Please accept our apologies if you receive multiple copies of this call] [Please send to interested colleagues / mailing-lists] ************************************************************************************************************ CALL FOR PAPERS IWST15 â International Workshop on Smalltalk Technologies Brescia, Italy; July 15, 2015 http://www.esug.org/wiki/pier/Conferences/2015/International-Workshop-IWST_… ************************************************************************************************************ ------------------- Goals and scopes ------------------- The goals of the workshop is to create a forum around advances or experience in Smalltalk and to trigger discussions and exchanges of ideas. The topics of your paper can be on all aspect of Smalltalk, theoretical as well as practical. Participants are invited to submit research articles or industrial papers. This year we want to open two different tracks: one research track and one industrial track with less scientific constraints. We expect papers of three kinds: Short position papers describing emerging ideas Long research papers with deeper description of experiments and of research results. Industrial papers with presentation of real and innovative Smalltalk applications; this kind of paper should enlighten why Smalltalk is really appropriate for your application. We will not enforce any length restriction. -------------------- Important Dates -------------------- *Submission deadline: April 17th, 2015* Notification deadline: May 20th, 2015 Workshop : July 15th, 2015 All accepted papers will be published in ACM DL ------------------- Topics ------------------- We welcome contributions on all aspects, theoretical as well as practical, of Smalltalk related topics such as: -Aspect-oriented programming, -Design patterns, -Experience reports, -Frameworks, -Implementation, new dialects or languages implemented in Smalltalk, -Interaction with other languages, -Meta-programming and Meta-modeling, -Tools ------------------- Best Paper Award ------------------- To encourage the submission of high-quality papers, the IWST organizing committee is very proud to announce a Best Paper Award for this edition of IWST. We thank the Lam Research Corporation for its financial contribution which makes it possible for prizes for the three best papers: 1000 USD for first place, 600 USD for second place and 400 USD for third place. The ranking will be decided by the program committee during the review process. The awards will be given during the ESUG conference social event. The Best Paper Award will take place only with a minimum of six submissions. Notice also that to be eligible, a paper must be presented at the workshop by one of the author and that the presenting author must be registered at the ESUG conference. ------------------- Publication ------------------- Both submissions and final papers must be prepared using the ACM SIGPLAN 10 point format. Templates for Word and LaTeX are available at http://www.acm.org/sigs/sigplan/authorInformation.htm. This site also contains links to useful informations on how to write effective submissions. ------------------- Submission ------------------- All submissions must be sent via easychair: https://easychair.org/conferences/?conf=iwst2015 ------------------- Program chairs ------------------- Anne Etien (UniversitÃ© de Lille 1, France) Jannik Laval (Ecole des Mines de Douai, France) -- ~~Jannik Laval~~ Ãcole des Mines de Douai Enseignant-chercheur http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info http://car.mines-douai.fr/

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About the singleton pattern
by Christophe Demarey April 9, 2015

April 9, 2015

Hi, We use quite often the singleton pattern but when I need to use one, I always need to ask myself "What is the selector to get this singleton?". We use either aClass>>current, aClass>>default or aClass>>uniqueInstance. Could we agree on the selector to use and update existing code? To get a quick overview, I searched about these methods in a Pharo4 image and get these results: ((SystemNavigation default allImplementorsOf: #default) select: #isMetaSide) size. "45" ((SystemNavigation default allImplementorsOf: #current) select: #isMetaSide) size. "40" ((SystemNavigation default allImplementorsOf: #uniqueInstance) select: #isMetaSide) size. "19" Your opinion? Christophe.

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Spotter
by Ben Coman April 9, 2015

April 9, 2015

Just a note, I went back to an old image and really miss the Spotter workflow. One thing, can you remind me how when it shows 5/30 implementors I get a list of all 30? I'm sure I've done this before but can't remember. Perhaps this means its not obvious and maybe should appear in a "How To Use" section in the Release Notes. cheers -ben

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14606 Really Important bug - Can't see some variables values while debugging closure
by Ben Coman April 9, 2015

April 9, 2015

Issue 14606 [1] is tagged "Really Important" where evaluating.... | t1 t2 t3 t4 t5 t6 | t1 := 1. t2 := 2. t3 := 3. t4 := 4. t5 := 5 . t6 := 6. [ t5 := 50. t6 := 60. t3 + t4. 1 halt. ] value => can't see the value of t4, t5, t6. I've just submitted a possible solution for this, but its a bit late before release for such a change - so I'm asking for "all hands in" to help stress test it. You don't need to review code, just please merge latest slice 14606 into your normal working image and report your experience. cheers -ben [1] https://pharo.fogbugz.com/default.asp?14606#124466

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Fwd: [ci-announces] Memory upgrade on Jenkins servers
by Christophe Demarey April 9, 2015

April 9, 2015

Scheduled shutdown of jenkins servers: DÃ©but du message rÃ©expÃ©diÃ© : > De : Emmanuel Jeanvoine <emmanuel.jeanvoine(a)inria.fr> > Date : 9 avril 2015 17:10:23 HAEC > Ã : ci-announces(a)inria.fr > Objet : [ci-announces] Memory upgrade on Jenkins servers > RÃ©pondre Ã : Emmanuel Jeanvoine <emmanuel.jeanvoine(a)inria.fr> > > Dear users, > > In order to prevent issues related to memory saturation on Jenkins servers, > an upgrade will be performed on next Monday (April 13th, 2015) between > 09:45 and 11:15. Meanwhile, the Jenkins instances will be stopped. In order > to prevent any issue, you should stop your Jenkins instances before the > maintenance. > > Thank you for your understanding, > Emmanuel > > -- > Emmanuel Jeanvoine > Inria Research Engineer > +33 3 54 95 86 21 > http://www.loria.fr/~ejeanvoi/

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Inspecting Slots raises an error
by Juraj Kubelka April 9, 2015

April 9, 2015

Hi, I have tried to inspect Model allSlots and if I click on a slot it raises an error "WordLayout does not understand #definesSlot:â Is it problem of Slots or of GT-Inspector definition? Pharo #40597 Cheers, Juraj

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