July 2013 - Pharo-users - lists.pharo.org

Storing test data in methods
by Norbert Hartl Aug. 2, 2013

Aug. 2, 2013

I try to untangle my modules. I have a parser that creates a model and a tool that uses that model. For testing it is convenient to just generate the model and work with it. But this way I introduce dependencies which always pulls everything in. In order to untangle I would need a way to easily serialize the runtime model into methods or something similar. Anything that can be transported via monticello is ok. I just don't want to have dependencies to present of external files. That would just change the problem but not solving it. Any ideas? Norbert

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[DOC] Building and deploying your first web app with Pharo
by Sven Van Caekenberghe Aug. 1, 2013

Aug. 1, 2013

Hi, I wrote a new tutorial, "Building and deploying your first web app with Pharo - Understanding HTTP fundamentals through Zinc HTTP Components". By chronologically following the development process, you will see a small web app growing from something trivial to the final result. Finally, we will save our source code in a repository and deploy for real in the cloud. http://zn.stfx.eu/zn/build-and-deploy-1st-webapp Pharo 2.0/3.0 features such as Nautilus, SmalltalkHub, Metacello Configurations, Zeroconf Scripts and of course Zinc HTTP Components are used while highlighting traditional strengths such as incremental, live & interactive development in a rich environment. Enjoy, Sven PS: Feedback is welcome, the source document lives here https://github.com/svenvc/zinc/blob/master/build-and-deploy-1st-webapp/buil… - pull requests appreciated. -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

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Packages ... group view example
by Geert Claes Aug. 1, 2013

Aug. 1, 2013

I know I have seen it somewhere but I can't seem to find it. Can someone point me to an example where the packages are parsed by the "-"? e.g. Dsplayed as: v AST v Core > Matching > Nodes > Parser > Pattern > Tokens > Visitors > Interpreter > Tests Instead of: AST-Core AST-Core-Matching AST-Core-Nodes AST-Core-Parser AST-Core-Pattern AST-Core-Tokens AST-Core-Visitors AST-Interpreter-Core AST-Interpreter-Extension AST-Interpreter-Test AST-Tests-Core Thanks! -- View this message in context: http://forum.world.st/Packages-group-view-example-tp4701657.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Pharo performance
by Chris Aug. 1, 2013

Aug. 1, 2013

I've been getting a little concerned with certain aspects of performance recently. Just a couple of examples off the top of my head were trying to do a printString on 200000 floats which takes over 3 seconds. If I do the same in Python it is only 0.25 seconds. Similarly reading 65000 points from a database with the PostgresV2 driver was about 800m/s and only 40 with psycopg. I'd have to try it again but am pretty sure going native was faster than OpenDBX as well. I appreciate Pharo is never going to be able to compete with the static-typed heavyweight languages but would hope we can get performance at least comparable to other dynamic languages :) Is it just that some method implementations are in need of some TLC; more things moved on top of C libraries and primitives and so forth rather than anything with the VM itself? Cheers Chris

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Large images reasons [WAS] Re: Pharo 2.0 with Seaside + DBXTalk + GlorpDBX + Magritte 3 + TWBS is getting slower and slower
by Mariano Martinez Peck Aug. 1, 2013

Aug. 1, 2013

OK, this was was my experiment.... Image fresh with all my app and dependencies loades: 30MB After using it for some days/weeks: 160MB. SpaceTally new printSpaceAnalysis showed: Class code space # instances inst space percent inst average size ByteString 2785 413144 116244078 69.90 281.36 Array 3712 181772 8466668 5.10 46.58 ByteArray 8574 1319 8186802 4.90 6206.82 Bitmap 3653 303 6656340 4.00 21968.12 CompiledMethod 22467 90554 5685374 3.40 62.78 After executing ImageCleaner cleanUpForRelease: 36MB Then...I searched which part of #cleanUpForRelease: was making the difference, and it was: Smalltalk cleanUp: true except: #() confirming: false. So now it was time to know WHICH class did the diference, so I modified #cleanUp: aggressive except: exclusions confirming: aBool in these lines: "Run the cleanup code" classes do:[:aClass| Transcript show: 'Image size before cleaning ', aClass name, ' : ', Smalltalk imagePath asFileReference size asString. aClass cleanUp: aggressive. 3 timesRepeat: [Smalltalk garbageCollect]. Smalltalk snapshot: true andQuit: false. Transcript show: 'Image size after cleaning ', aClass name, ' : ', Smalltalk imagePath asFileReference size asString. ] displayingProgress: [:aClass| 'Cleaning up in ', aClass name]. I then opened a Transcript, and evaluated Smalltalk cleanUp: true except: #() confirming: false. I went to prepare Mate, and when I come back, the result was, of course: "Image size after cleaning MCFileBasedRepository : 39744008" That clean up ends up doing: flushAllCaches self allSubInstancesDo: [:ea | ea flushCache] So it sends #flushCache to all instances of MCHttpRepository and MCFileBasedRepository. Now what I wanted to see if it there was a particular repo that could take most of the space (like package-cache). And indeed, it was...I modified #flushCaches to: flushAllCaches | file | file := 'repos.txt' asFileReference writeStream text. self allSubInstancesDo: [:each | file nextPutAll: 'Image size before cleaning ', each printString, ' : ', Smalltalk imagePath asFileReference size asString; cr. each flushCache. 3 timesRepeat: [Smalltalk garbageCollect]. Smalltalk snapshot: true andQuit: false. file nextPutAll: 'Image size after cleaning ', each printString, ' : ', Smalltalk imagePath asFileReference size asString;cr. ]. file flush; close. And then I looked in the 'repos.txt' file. My package cache repo cleaned 60 MB. Glorp cleaned 35MB. Seaside30 cleaned 10MB. So...cleaning cache of just 3 repos frees approx 100MB. The question is....can we flush the cache safely? If they are called "cache", then I guess yes, we can. Thoughts? Thanks, On Wed, Jul 31, 2013 at 10:48 AM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Guys, I have images also with seaside, magritte, glorp, postgresV2, etc > and it is also around 200MB. > I will try to do some research today and let you know. > > Cheers, > > > On Tue, Jul 30, 2013 at 8:55 AM, Marcus Denker <marcus.denker(a)inria.fr>wrote: > >> >> On Jul 30, 2013, at 1:49 PM, "phil(a)highoctane.be" <phil(a)highoctane.be> >> wrote: >> >> > the changes file contained passwords and I replaced the text. So >> offsets may be wrong due to that. >> > >> Yes, the first thing I wanted to do is to recompile everything. Does not >> work. >> >> > Memorymonitor is not doing fanct stuff. It just counts instances. >> > >> Yes, but maybe it holds on to these instances? >> >> Marcus >> >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > -- Mariano http://marianopeck.wordpress.com

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RFB on 2.0 + linux - semaphore primitive failed
by Paul DeBruicker July 31, 2013

July 31, 2013

Hi - In Pharo2 do I need to stop and start the RFB server? I 've been getting a primitive #signal in Semaphore failed error after the image starts. I'm using this version of RFB RFB-MarianoMartinezPeck.41 Thanks Paul

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[ANN] Pharo 2 Summer released
by Esteban Lorenzano July 31, 2013

July 31, 2013

The Pharo Team is happy to announce the Pharo 2 Summer release, the regular half of the year bugfix edition. For this version, we incorporated really few changes since 2.0 was a really successful release. Anyway, we managed to sneak in a couple of minor additions: - Integrated ProfStef - Updated Configurations Browser Also, we integrated 42 bugfixes, 20 of them backported from 3. 0 alpha. As always, Summer edition can be downloaded at: http://www.pharo-project.org/pharo-download We want to thank to all members of the community for their help and support and specially to all who submitted the reports, fixed the bugs and tested them. The Pharo Team List complete of bugfixes and backports: =============================== Fixed: -------- 7345 DNU with Glamour: PaginatedMorphTreeMorph>>setSelectedMorph: https://code.google.com/p/pharo/issues/detail?id=7345 10014 World menu > System > Switch User serves no purpose https://pharo.fogbugz.com/f/cases/10014/World-menu-System-Switch-User-serve… 10004 SmalltalkImage current reportCPUandRAM > DNU https://pharo.fogbugz.com/f/cases/10004/SmalltalkImage-current-reportCPUand… 10017 ProtocolCLient do not propagate the erros from the server https://pharo.fogbugz.com/f/cases/10017 7627 FileReference>>deleteAll follows symlinks https://pharo.fogbugz.com/f/cases/7627 10027 Failing Test: FileReferenceTest>>#testDeleteAl https://pharo.fogbugz.com/f/cases/10027 10123 Bug in warning in CriticBrowser https://pharo.fogbugz.com/f/cases/10123 10196 Change shortcuts default settings of 2.0 to the traditional ones https://pharo.fogbugz.com/f/cases/10196 10195 Replace ugly Keymappings API on:do: https://pharo.fogbugz.com/f/cases/10195 10200 Date instances dayOfWeek wrong https://pharo.fogbugz.com/f/cases/10200 10109 MNU : SmalltalkEditor>>browseItHere: https://pharo.fogbugz.com/f/cases/10109 10394 Duplicated instance #model in NewList (already defined in MorphicModel) https://pharo.fogbugz.com/f/cases/10394 10336 Port 2.0: Document difference between TextModel and TextInputFieldModel https://pharo.fogbugz.com/f/cases/10336 10653 Some Jenkins images show a stdout is closed error https://pharo.fogbugz.com/f/cases/10653 10653 Some Jenkins images show a stdout is closed error https://pharo.fogbugz.com/f/cases/10653 10415 Integrate 2.0: 10411 flush after nextChunkPut: https://pharo.fogbugz.com/f/cases/10415 10888 Backport 2.0: Compound Extension Methods Unpackaged https://pharo.fogbugz.com/f/cases/10888/Backport-2-0-Compound-Extension-Met… 10730 Fix for stack serialization with Fuel https://pharo.fogbugz.com/f/cases/10730/Fix-for-stack-serialization-with-Fu… 10946 HistoryCollection package is empty https://pharo.fogbugz.com/f/cases/10946 11101 fileOutMethod:on: uncategorized in 2.0 https://pharo.fogbugz.com/f/cases/11101 11179 Config browser buttons broken due to missing method https://pharo.fogbugz.com/f/cases/11179 10860 option click on list in TestRunner and others: freeze system https://pharo.fogbugz.com/f/cases/10860 Backported: ---------------- 10194 Backport to 2.0: special objects array recreation crash https://pharo.fogbugz.com/f/cases/10194 10185 Backport 2.0: 10173 ClassBuilder cannot safely modify a class why using it https://pharo.fogbugz.com/f/cases/10185 10174 Backport 2.0 Issue 10162: multiple selection of methods in method pane ... https://pharo.fogbugz.com/f/cases/10174 10249 Backport 2.0: Red Light when all test are green https://pharo.fogbugz.com/f/cases/10249 10230 backport 2.0: 10229 Fix sender of #copyWithTempsFromMethodNode: https://pharo.fogbugz.com/f/cases/10230 10179 backport 2.0: 10038 Wrong deprecated message https://pharo.fogbugz.com/f/cases/10179 10260 backport 2.0: 10258 DivideByZero in SystemProgressMorph https://pharo.fogbugz.com/f/cases/10260 10406 backport 2.0: 5819 Implement a way to get the user directories based on the current OS https://pharo.fogbugz.com/f/cases/10406 10396 backport 2.0 10395 DNU SmallInteger>>#add: when loading metacello configuration https://pharo.fogbugz.com/f/cases/10396 10387 backport 2.0: 10102 SocketStream>>next: should not signal ConncetionClosed https://pharo.fogbugz.com/f/cases/10387 10311 Backport 2.0: 10228 Fix tab key for autocompletion https://pharo.fogbugz.com/f/cases/10311 10537 Backport 2.0: StartupPreferences interferes with zeroconf pharo binary https://pharo.fogbugz.com/f/cases/10537 10938 backport 2.0 : an MCOrganizationDefinition should only remove empty categories during unload https://pharo.fogbugz.com/f/cases/10938 10909 Backport Pharo2.0: Prepare isHeadless for new VMs with double dash -- arguments https://pharo.fogbugz.com/f/cases/10909 10994 Backport 2.0: Delays do not work properly directly on image startup https://pharo.fogbugz.com/f/cases/10994/Backport-2-0-Delays-do-not-work-pro… 10931 Backport 2.0: Filing out extension package in Nautilus produces empty file https://pharo.fogbugz.com/f/cases/10931 10978 Backport 20: ZipArchive utf8 handling https://pharo.fogbugz.com/f/cases/10978 11125 backport 2.0: 10859 Monticello freezing the image https://pharo.fogbugz.com/f/cases/11125 10569 Backport 2.0: Better Interrruptionche https://pharo.fogbugz.com/f/cases/10569 10940 Backport 2.0: 10925 Use caching in Gofer https://pharo.fogbugz.com/f/cases/10940 11252 backport 2.0: have SliceMaker use fogbugz https://pharo.fogbugz.com/f/cases/11252

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Garbage collector & Memory Profiling
by Alejandro Infante July 31, 2013

July 31, 2013

Hello, We are currently working on memory profiling and we are having troubles to detect when an object is garbage collected. Any ideas? Thanks for the help, Alejandro Infante

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[ann] a snappier snapshotcello
by Tudor Girba July 30, 2013

July 30, 2013

Hi, A new version of Snapshotcello is now reachable from your Pharo 2.0 image. Besides snapshotting the current version, you now get the possibility of: - marking the new version as stable, - committing the configuration package, and - pushing the package to the official Pharo repository. Here is an example: Snapshotcello new configurationClass: ConfigurationOfSnapshotcello; sourceVersion: #development; targetVersion: '1.4-snapshot'; snapshot; makeStableFor: #'pharo2.x'; commit; pushToPharo20Repository A more detailed description can be found here: http://www.tudorgirba.com/blog/snappier-snapshotcello We can certainly improve this, and it would be great to have a similar mechanism integrated into Metacello. But, in the meantime, I find myself for the first time literally one do-it away from distributing projects that are developed without much constraints. Cheers, Doru -- www.tudorgirba.com "Every thing has its own flow"

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Little tutorial on customizing zero conf scripts
by Guillermo Polito July 30, 2013

July 30, 2013

Hey guys! inspired by the work of Camillo and Andrei customizing the ZeroConf scripts for moose, I did the same for my phd project and wrote a little tiny shy tutorial about it. http://playingwithobjects.wordpress.com/2013/07/30/customizing-zeroconf-scr… Hope it's helpful for somebody :) Guille

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