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Re: [Pharo-project] UndefinedObject(Object)>>doesNotUnderstand: #findNextHandlerContextStarting
by Marcus Denker April 29, 2011

April 29, 2011

On Apr 29, 2011, at 8:18 PM, Mariano Martinez Peck wrote: > > > On Wed, Apr 27, 2011 at 8:31 PM, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > On Apr 24, 2011, at 5:12 PM, Mariano Martinez Peck wrote: > > > grrrr I don't know what is happening. I am building a PharoDev 1.3 and at the end, I do: Undeclared removeUnreferencedKeys > > but this throws an error that I attach. It is a big loop of such error. > > The progress bar is showing "Clean up in DebuggerMethodMap" > > > > So I added the DebuggerMethodMap intialize (reset the cache) to Smalltalk cleanUp. > > > Thanks Marcus. I don't see this commit. Did you commit it? or we lost it with the squeaksource down ? > This was part of the cleanUp improvements... some time ago. see DebuggerMethodMap>>#cleanUp Marcus -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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[Pharo-project] Do you want the option to copy a stacktrace to clipboard?
by Mariano Martinez Peck April 29, 2011

April 29, 2011

Hi guys...with just 2 little methods, I am able to add a button to the debuger and a button to the context of the debugger, to copy the stakctrace to clipboard. Going to PharoDebug.log is anoying: 1) I never know where my image is, so I first need to do print Smalltlak imagePharo 2) then I need to go to such folder, and open the PharoDebug.log 3) most of the times, PharoDebug has appended a lot of other (un) issues so it is quite confusing to use such file for a bug report. Hence I need to: 4) remove PharoDebug.log and 5) Reproduce my problem again, so that to generate a new PharoDebug.log 6) finally search it again, open, and do the copy paste :) So....I think it should be muuuch easier from the debugger. So I added two possibilities 1) copy to clipboard from the "pre debugger windows" See attached screenshot. 2) copy to clipboard from the debugger context menu. See attached screenshot. So...do you like it? which one do you want of them ? both ? Cheers -- Mariano http://marianopeck.wordpress.com

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Re: [Pharo-project] UndefinedObject(Object)>>doesNotUnderstand: #findNextHandlerContextStarting
by Marcus Denker April 29, 2011

April 29, 2011

On Apr 29, 2011, at 11:23 PM, Mariano Martinez Peck wrote: > > > > > So I added the DebuggerMethodMap intialize (reset the cache) to Smalltalk cleanUp. > > > > > > Thanks Marcus. I don't see this commit. Did you commit it? or we lost it with the squeaksource down ? > > > This was part of the cleanUp improvements... some time ago. > > see DebuggerMethodMap>>#cleanUp > > > ok...after looking for a while, it is never called when you do > Smalltalk cleanUp: true except: #() confirming: false. > > I think it is because such method does: > > "Find all classes implementing #cleanUp or cleanUp:" > classes := Smalltalk allClasses select: [:aClass| > (aClass class includesSelector: #cleanUp) > or: [aClass class includesSelector: #cleanUp:]]. > > it checks for both messages, #cleanUp: or #cleanUp > > But then, it does: > > "Run the cleanup code" > classes > do:[:aClass| aClass cleanUp: aggressive] > displayingProgress: [:aClass| 'Cleaning up in ', aClass name]. > > > In your case, DebuggerMethodMap only implements #cleanUp, hence it is never called. > But there is in Behavior: cleanUp: aggressive "Clean out any caches and other state that should be flushed when trying to get an image into a pristine state. The argument should be used to indicate how aggressive the cleanup should be. Some subclasses may act differently depending on its value - for example, ChangeSet will only delete all unused and reinitialize the current change set if we're asking it to be aggressive." ^self cleanUp So it calls cleanUp even when you do Smalltlak cleanUp: true. Now I wonder if we should remove the displayingProgress and do the call to #cleanUp (the non-agressive one) on image save.... -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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Re: [Pharo-project] UndefinedObject(Object)>>doesNotUnderstand: #findNextHandlerContextStarting
by Marcus Denker April 29, 2011

April 29, 2011

On Apr 24, 2011, at 5:12 PM, Mariano Martinez Peck wrote: > grrrr I don't know what is happening. I am building a PharoDev 1.3 and at the end, I do: Undeclared removeUnreferencedKeys > but this throws an error that I attach. It is a big loop of such error. > The progress bar is showing "Clean up in DebuggerMethodMap" > So I added the DebuggerMethodMap intialize (reset the cache) to Smalltalk cleanUp. But why is that called when calling "Undeclared removeUnreferencedKeys"? > > In addition Undeclared ->>>> a Dictionary(#NoSuchElementError->nil ) > I checked http://code.google.com/p/pharo/issues/detail?id=4043 but there is no such method. NoSuchElementError looks like an exception subclass to me. Is it references somewhere? > Now...if I execute Undeclared removeUnreferencedKeys again, it works. > > The bad news is that this prevents the PharoDev 1.3 to be build.... > > I have no clue of what can be happening, but the only way I found so far to reproduce it is to: > > Gofer new > squeaksource: 'PharoTaskForces'; > pacakge: 'ConfigurationOfPharo'; > load. > > And then: > > (ConfigurationOfPharo project version: '1.3-beta') load > > > > -- > Mariano > http://marianopeck.wordpress.com > -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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[Pharo-project] Counting Messages as a Proxy for Average Execution Time in Pharo
by Alexandre Bergel April 29, 2011

April 29, 2011

Hi! There has been many discussion on profiling and execution. I believe the paper titled "Counting Messages as a Proxy for Average Execution Time in Pharo" draws some bases for a new generation of code profilers that are not tied to execution sampling. Advantages are numerous without not that many drawbacks. http://bergel.eu/download/papers/Berg11c-compteur.pdf I will put some effort on having "Compteur" in the main Pharo vm. This has to be carefully done and monitored to make sure there is no unwanted overhead. In the experience I have done, there is no overhead. I have started to get in touch with people close to the VM. I will keep you informed, especially when reviews and testing will be needed. One very cool think that everybody can benefit from, is to be able to write assertion in unit tests like: self assertIs: [ "expression1" ] fasterThan: [ "expression2" ] It compares the amount of messages sent by expression1 with the amount of messages sent by expression2, no matter how many messages are sent. Counting messages is, in the average, closely link to the average execution time. This cannot be done with [ ... ] timeToRun or MessageTally. I will keep you informed. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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[Pharo-project] XML and DTD
by Torsten Bergmann April 29, 2011

April 29, 2011

AFAIK there are various possibilities to check an XML: a) using an internal DTD b) using an external DTD (in a file) c) using an external schema d) mixing internal dtd and external dtd To validate using an internal DTD (a) the validation on the parser has to be set to true. Thats all, at least in Java: DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setValidating(true); Havent tried the Pharo implementation, dont know if it is complete or not. Maybe a) is at least supported. Only Michael RÃ¼ger (Impara.de) may be able to tell you since he wrote the original code AFAIK. You can also dig through the code or try an example to see if the setting #isValidating: has any effect. Did you check the unit tests on squeaksource.com/XMLSupport Maybe they are useful too. Bye T. -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de

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[Pharo-project] Explicit control of Parallel execution in Smalltalk ? (was Counting Messages as a Proxy for Average Execution Time in Pharo)
by Nicolas Cellier April 29, 2011

April 29, 2011

2011/4/29 Stefan Marr <pharo(a)stefan-marr.de>: > > On 29 Apr 2011, at 01:07, Nicolas Cellier wrote: >>>> However, as I understand it, it's entirely up to user to write code >>>> exploiting parallel Process explicitly right ? >>> Sure, you have to do: n times: [ [ 1 expensiveComputation. ] fork ]. >>> >>> I don't belief in holy grails or silver bullets. >>> Automatic parallelization is something nice for the kids, like Santa Clause or the Easter Bunny... >> >> Unless your hobby is oriented toward functional languages maybe... >> But I just know enough of it to now shut up ;) > Would be nice, but that is also a fairy tale. > > The best we have today, in terms of being 'easily' automatically scheduleable are data-flow/stream languages. Things like StreamIT or Lucid have interesting properties, but well, its still a search for the holly grail. > > Best regards > Stefan > Interestingly, I was thinking of Xtreams as an obvious Smalltalk test case for parallelism. But of course choosing manually an optimal multi-Process implementation is far from easy... Reading http://cag.lcs.mit.edu/commit/papers/06/gordon-asplos06-slides.pdf reinforce my feeling that it shall not be optimized manually, and that user shall not design/assign Process directly. I don't know what the right abstraction would be in Smalltalk though such that a VM could do it, and neither do I understand how StreamIT solves the optimization, but thanks for these interesting clues. Nicolas > > -- > Stefan Marr > Software Languages Lab > Vrije Universiteit Brussel > Pleinlaan 2 / B-1050 Brussels / Belgium > http://soft.vub.ac.be/~smarr > Phone: +32 2 629 2974 > Fax: Â +32 2 629 3525 > > >

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[Pharo-project] XML and DTD
by Olivier Auverlot April 29, 2011

April 29, 2011

Hi, Now, I'm playing with XML-Parser. It's a funny game but I have a little question. How to validate a XML file with a DTD ? Thank for your help. Best regards Olivier ;-) www.auverlot.fr

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April 29, 2011

Hi guys here is the status: - I have all tests green but but but - I have plenty of code to review about the integration with MC and understand since cyrille's goal was to make sure that RPackage can be used in place of PackageInfo and using the same subpackage semantics. Now having that put a lot of ugly code in RPackage and we have to do really strange things to make it work. If you want to have a look you can load the latest configurationOfRPackage and load version 30 and check a bit Gofer new squeaksource: 'PharoTaskForces'; package: 'ConfigurationOfRPackage'; load. ConfigurationOfRPackage project load: '3.0' run the tests look for self flag: #stef self flag: #cyrille - I would like to review all this code and see if we can improve it to the point where this is ok to keep it or just do what we decided: one category = one package: no submatching. Now I have also a problem and metacello can help me. RB is one of the heavy/sometimes even single user of some packageInfo API and I would like to migrate RB alltogether with RPackage. So mariano may be I could work on a configurationOfRB for me. What do you think: I could load OB version for 1.3 RB version (we mark a stable version for 1.3) and I work with another one for 11.4 for example? Mariano could you give me hand on that? Stef

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[Pharo-project] [update 1.3] #13176
by Marcus Denker April 29, 2011

April 29, 2011

13176 ----- Issue 4123: ifNotNilDo: --> ifNotNil: Issue 4122: Fix #isDeprecated Issue 4121: move more deprecated methods to package Deprecated13 Issue 4072: Deprecate or fix PCXReadWriter Issue 4119: MorphTreeMorph rows height and color problem Issue 3860: Overzealous arithmetic collection removal -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

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