- Pharo-dev - lists.pharo.org

[Pharo-project] Preallocation behavior
by jannik.laval April 28, 2011

April 28, 2011

Hi all, I am playing with MessageTally, and I have a strange result with prealocation. Here is my example. I am working on a PharoCore1.3, with a VM4.2.5 First of all, I spy this source code: ==== MessageTally spyOn: [ 500 timesRepeat: [ | str | str := ''. 9000 timesRepeat: [ str := str, 'A' ]]]. ==== The result appears after 24 961 ms. An optimization is to use a Stream. Here is my source code: === MessageTally spyOn: [ 500 timesRepeat: [ | str | str := WriteStream on: (String new). 9000 timesRepeat: [ str nextPut: $A ]]]. === The result appears after 812 ms, which is a large improvement. Now, we could optimize again using the preallocation. Here is my source code: ==== MessageTally spyOn: [ 500 timesRepeat: [ | str | str := WriteStream on: (String new: 10000). 9000 timesRepeat: [ str nextPutAll: 'A' ]]]. ==== And the result is strange: it makes 2 times slower to display the result. The result appears after 1656 ms. Here is the spy result: === - 1656 tallies, 1656 msec. **Tree** -------------------------------- Process: (40s) 464519168: nil -------------------------------- **Leaves** 22.9% {380ms} UndefinedObject>>DoIt 22.5% {373ms} SmallInteger(Integer)>>timesRepeat: 22.2% {368ms} WriteStream>>nextPutAll: === There is the call of UndefinedObject>>DoIt which is added and takes time. Does anyone know what is done during the preallocation ? Why is it slower than non-preallocation ? Thanks for your answers. Jannik

7 17

Re: [Pharo-project] [ANN] PharoDev-1.3-13173
by Marcus Denker April 28, 2011

April 28, 2011

On Apr 27, 2011, at 6:27 PM, Philippe Marschall wrote: > > - OBDefinition >> #doItReceiver references FakeClassPool > This can not be. I added FakeClassPool back to the Deprecated13 package some updates ago. Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

2 1

[Pharo-project] GitFs / MCGit
by Camillo Bruni April 28, 2011

April 28, 2011

Hi Max, I took another effort to work on the git bindings of MC. However I ran into troubles with FSGitFilesystem on commiting. 1. I fail when saving the repos in GitCommit >> parents when it starts to lazily load the object which does not exist yet... 2. GitRespository >> packedObjectWithSignature: aGitObjectSignature does not throw an exception but simply returns nil? does this make sense? maybe you have a clue how to solve this faster than I do :-) camillo

6 11

[Pharo-project] Why we have Behavior >> flushCache?
by Mariano Martinez Peck April 28, 2011

April 28, 2011

Hi. As far as I can see, Behavior >> flushCache "Tell the interpreter to remove the contents of its method lookup cache, if it has one. Essential. See Object documentation whatIsAPrimitive." <primitive: 89> self primitiveFailed And primitive 89 does nothing in particular with the receiver (the class in this case). In both, InterpreterVM and Cog, the WHOLE cache is flushed, there is NOTHING related to the receiver class. Of course, that's at least what it looks for me (please tell me if I am wrong). So...if this is the case, wouldn't make sense to move it elsewhere? like Smalltalk flushCache or Smalltalk vm flushCache (and it is a good moment to reify the VM). So after we can do: Smalltalk vm version. Smalltlak vm flushCache, Smalltalk vm parameterAt: , etc.... If you don't like doing "Smalltalk vm" then we can create a VM class with all class methods, or a singleton and use #current or a singleton and put it in Smalltalk globals...etc We will need to fix a couple of senders, thus. What do you think? For me is really confusing, and you don't understand it until you see the primitive implementation. Cheers -- Mariano http://marianopeck.wordpress.com

7 11

[Pharo-project] [update 1.3] #13174
by Marcus Denker April 28, 2011

April 28, 2011

13174 ----- Issue 4099: Find and replace doesnt accept with Enter key Issue 4102: Show commit message only after successfully commiting a new version Issue 4108: remove authoringPrototype methods Issue 4105: Failing test: Tests.SystemChangeNotification.ChangeHooksTest.testMethodRemovedEvent2 Issue 4082: nil@nil Issue 4069: Object>>withArgs:executeMethod: should be removed we deprecate the specialized version (Prim 189), but keep #withArgs:executeMethod: for now until there is a primitive for CompiledMethod... (this is used for executing DoIts). For the next step, we will add another Issue later. -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

2 1

Re: [Pharo-project] Bug while updating PharoCore
by Marcus Denker April 28, 2011

April 28, 2011

I added a tracker entry: http://code.google.com/p/pharo/issues/detail?id=4104 I will see how to fix that. On Apr 27, 2011, at 5:59 PM, Casimiro de Almeida Barreto wrote: > While loading 13171-Pha-CleanupsFinderSearch debugger is raised with > Message not understood: Receiver of "load" is nil > > and: > > DoIt > | t1 | > t1 := MCHttpRepository > location: 'http://www.squeaksource.com/Pharo/' > user: '' > password: ''. > (t1 loadVersionFromFileNamed: 'ScriptLoader13-MarcusDenker.191.mcz') > load. > ^ ScriptLoader new update13171 > > Meaning ScriptLoader13-MarcusKender.191.mcz is not there or squeaksource > is down... > -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

1 1

Re: [Pharo-project] [ANN] PharoDev-1.3-13173
by Marcus Denker April 28, 2011

April 28, 2011

> > general impressions: > - some way to clear the Transcript would be nice (other than Transcript > clear) eg. a Button > - some way to select stuff in the transcript would be nice Transcript will be fixed... > - what happened to the backport button in Monticello? > No idea. > I found two undeclareds: > - ZnServer class >> #initialize references AutoStart > - OBDefinition >> #doItReceiver references FakeClassPool > > -> some small migration guide would be nice, maybe even a Lint rule that > checks for removed globals ;-) > Yes.. now I have no time to do this. Who wants? Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

2 1

[Pharo-project] [ANN] PharoDev-1.3-13173
by Mariano Martinez Peck April 28, 2011

April 28, 2011

Hi. IMPORTANT: This is not the final 1.3 release, it just one simple snapshot and one point. We all want a rock-solid Pharo 1.3 release, but that doesn't happens automagically. We all need to start using and testing the image before they are release. It is for the better of all of us. The more we test the more stable will be the release. So...we need your help. What you can do? 1) test test test test test. Use it. Take this image and use it for your regular work. 2) report bugs: http://www.pharo-project.org/community/issue-tracking 3) propose fixes: http://code.google.com/p/pharo/wiki/HowToContribute 4) Fix errors/failures tests 5) Load your OWN packages and projects now. Don't wait until Pharo1.3 is released and then ask "uuhh what happened to XXX? you removed? ohhh but I use it". 6) Do you maintain Metacello configurations? ok, if you test your project and works correctly in Pharo 1.3, please update (or create if you don't yet have it) the #stable, 7) Do you maintain packages included in Pharo? please check we are using the correct versions 8) I would like to see people testing AidaWeb, Magma, Fuel, Moose, DBXTalk, Seaside and all its friends, Zinc, FileSystem, etc, etc, etc. Pharo-1.3-13173 should work with Interpreter VM and with Cog. For Cog I recommend to download the last one from Eliot's page: http://www.mirandabanda.org/files/Cog/VM/ Two little warnings: - The Transcript is read only....and it will probably be roll backed to the previous one - if text editing looks weird....it is Lukas's fault ;) http://www.youtube.com/watch?v=fTMX1f8Lu5w Ok, the image is here: https://gforge.inria.fr/frs/download.php/28517/Pharo-1.3-13173.zip<https://gforge.inria.fr/frs/download.php/28517/Pharo-1.3-13173.zip> And it was build by Hudson: https://pharo-ic.lille.inria.fr/hudson/view/Pharo/job/Pharo%201.3/111/ Best regards, -- Mariano http://marianopeck.wordpress.com

8 16

[Pharo-project] ConfigurationOfMagma with support for Magma 1.2 and symbolic versions
by Miguel CobÃ¡ April 27, 2011

April 27, 2011

Hi all, I'm glad to announce a new version of ConfigurationOfMagma with support for Magma 1.2. This configuration has been tested on PharoCore 1.1.x PharoCore 1.2.x Thank you very much to Chris Muller who, as always, is working hard to keep Magma running on Squeak and Pharo. I used the same versions of packages he used in his scripts for Squeak in order to update the configuration. You must download the latest PharoCore image or update a existing one before installing Magma, as Magma needs some changes that were applied to Pharo post-release and are available in the update stream. Pharo 1.1.x ------------ Download PharoCore 1.1.2 from: https://gforge.inria.fr/frs/download.php/28341/PharoCore-1.1.2.zip Update it if necessary and save it. Pharo 1.2.x ------------ You have two options: 1. Take a released 1.2.1 from: http://www.pharo-project.org/pharo-download/stable-core This is actually image update 12345. Evaluate: SystemVersion newVersion: 'Pharo1.2.2a'. update the image (it will update to 12350, at this time) and save it. 2. Take a snapshot of the upcoming 1.2.2 release of Pharo 1.2.x line from: https://gforge.inria.fr/frs/download.php/28436/PharoCore-1.2.2a-12345.zip update the image (it will update to 12350, at this time) and save it. Install Magma -------------- Ok, now you have an updated image. Load the configuration by evaluating: Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfMagma'; load. And depending on which of client, server or the full suite of Magma do you want, evaluate: - Magma client ((Smalltalk at: #ConfigurationOfMagma) project version: #stable) load: 'Client'. - Magma server ((Smalltalk at: #ConfigurationOfMagma) project version: #stable) load: 'Server'. - Magma tester ((Smalltalk at: #ConfigurationOfMagma) project version: #stable) load: 'Tester'. For example, to load the full magma suite evaluate: Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfMagma'; load. ((Smalltalk at: #ConfigurationOfMagma) project version: #stable) load: 'Tester'. This will load client, server and test of Magma. Running tests ------------- To run the tests evaluate: MagmaTestCase allowWriteBarrier: false. MagmaTestCase fullSuite maDebug. Stable versions --------------- This release of ConfigurationOfMagma includes support for Metacello's symbolic versions. Currently the #stable version of Magma is configured like this: Pharo version #stable version ------------- --------------- Pharo 1.1.x 1.2 Pharo 1.2.x 1.2 Pharo 1.3.x 1.2 That is, Magma 1.2 is the #stable version for Pharo 1.1, Pharo 1.2 and Pharo 1.3. Known issues -------------- Magma 1.2 loads correctly and appears to work for the basic things (create a repo, add data, commit, etc) in PharoCore 1.3 and Pharo 1.3, but the full suite hasn't ran correctly in the current unstable Pharo. So use Magma 1.2 on Pharo 1.3 on your own risk and not for production yet. When the issues (including the Transcript revert that should happen in Pharo soon) are addressed, a new announce will be made for Magma on Pharo 1.3 Any feedback welcome. Enjoy. -- Miguel CobÃ¡ http://twitter.com/MiguelCobaMtz http://miguel.leugim.com.mx

2 2

[Pharo-project] roeltyper problem
by Tudor Girba April 27, 2011

April 27, 2011

Hi, I am trying to use RoelTyper, but I encountered subscript out of bounds and empty collection errors. It looks like this problem can be reproduced on 29 classes from Pharo 1.2.1. You can test it using: classes := Dictionary new. Object withAllSubclassesDo: [:each | [(TypeCollector typeInstvarsOfClass: each )] on: Error do: [:error | classes at: each put: error ]]. classes inspect I am not knowledgeable enough to dive into this. Can anyone help? Cheers, Doru -- www.tudorgirba.com "Value is always contextual."

2 4