- Pharo-dev - lists.pharo.org

[Pharo-project] on Raspberry Pi

by Pavel Krivanek

Hi, one my friend got Raspberry Pi yesterday so I have seen it in action. I had almost no time for experiments but I have seen Fedora 17 on it with standard Squeak (3.10) packages for this distro on FullHD display. On that VM (3.10.5) I got about 40M bytecodes/sec and 1M sends/sec. The environment is not extra fast but usable without problems. I will pray for successful GSoC ARM JIT project :-) The device was connected to the professional meter and the power consumption was about 3.5W. Cheers, -- Pavel

May 10, 2012

[Pharo-project] Fwd: Do you know any candidates for assistant positions in our department

by StÃ©phane Ducasse

Begin forwarded message: > From: Kim Mens <Kim.Mens(a)uclouvain.be> > Subject: Do you know any candidates for assistant positions in our department > Date: May 10, 2012 10:28:45 AM GMT+02:00 > To: researchers RELEASED <released(a)listes.uclouvain.be> > > Dear all, > > I am urgently looking for possible candidates to fill up some teaching and research assistants in our department. Such an assistant typically has teaching and research duties and gets up to 6 years to obtain a PhD (to be renewed every 2 years). The 6 years is because of the extra teaching load as compared to a normal researchers. Regarding research, they get to choose what professor they want to do research with and negotiate the research topic with him; evidently I'm open to have them under my guidance, but the choice is up to them. Regarding teaching, the teaching charges are distributed equally among the different assistants based on their capacities and interests. The positions are very interesting, and they get a real contract and fair salary (as compared to some other countries). A university level degree of master in computer science or computing science engineering (or something equivalent) is a must. (For foreigners, equivalence of their diploma will need to be verified but that can be done afterwards I think.) Knowledge of French is strongly desired because the bachelor years are still taught in French and we are already quite short on French-speaking researchers to help out with teaching duties in the bachelor years. Knowledge of English is also positive since our Master years are taught in English. Anyway, if you would know anyone, please pass them this information. The deadline is very short since all forms need to be filled in and submitted electronically by May 18, which would mean they need to start working on it right now. A internal selection commission of professors from our department will select the three best candidates from all those who applied. > > More instructions on how to apply can be found here : > http://www.uclouvain.be/11617.html > The candidate needs to fill out the digital form that is available there. If they click on "Listes des postes vacants" they will see the different vacancies currently available for the entire university. The ones related to our department can be found under the faculty "Ecole Polytechnique de Louvain" and more specifically the vacancies with identification numbers 00001941, 00002203, en 00004257. > You will see that 2 of these 3 have a description that is particularly dedicated to computer science. The third one looks more general, but in fact it has been decided recently that it will also go to computer science, but we weren't able to change the description anymore. Interested candidates should thus fill in the form and are strongly advised to apply to each of the 3 positions, even though they can receive only one. (I agree the procedure is a bit absurd, but what did you expect, this is Belgium.) > > Of course you can always contact me for more information or if the procedure is not 100% clear (even though I also had to look all of this up on the official university webpage). > > That's it for now... > > Thanks for your attention to this mail. > > Prof. Kim Mens > UniversitÃ© catholique de Louvain (UCL) > Institute of Information & Communication Technologies, Electronics and Applied Mathematics (ICTEAM) > IngÃ©nierie Informatique (INGI) > Place Sainte Barbe 2, B-1348 Louvain-la-Neuve, Belgique > kim.mens(a)uclouvain.be > > >

May 10, 2012

Re: [Pharo-project] Strangest object ever seen?

by Mariano Martinez Peck

On Wed, May 9, 2012 at 3:31 PM, Herby VojÄÃk <herby(a)mailbox.sk> wrote: > The cause of the problem is probably in this: if you try to inspect > dzindzik, VM prints out something like "Directory does not have index: 7". > If you try dzindzik instVarAt:1, dzindzik instVarAt:2, ... in a row, you > get 6, but there is not 7. > > This is related to the instVar 'layout' that was added to Behavior. If you analyze dzindzik, its correct. I mean, the order in its instVars are correct. Its problem is "thisClass". As you could notice, you could not inspect thisClass because you get an error with the "Directory does not have index: 7". So, go to SystemWindows and change this method to: SystemWindow >> #labelled: labelString ^self new setLabel: 'caca' What we do is to be able to open the inspector while avoiding to ask for its class for the label (since it is broken). Now you are able to inspect thisClass. When you inspect this class, you will see that the first instVars (superclass, methodDict and format) are all correct. 'layout' is nil and from there, all instVars are shifted one slot. The instvar instanceVariables have a classOrganizer. The instVar subclasses has the name, etc... so... thisClass subclasses -> #Object Of course, you cannot inspect the last instVar 'localSelectors' because you are going out of the scope ;) In summary it looks like dzindzik is anoher Metaclass of Object, say Object class (whose instVars are correct), and dzindzik class is Object but with broken (shifted) instVars. That's all we could fine so far with Guille :) > So dzindzik's class thinks it has (at least) seven inst vars, but in fact > in does only have six. > > Herby > > -- Mariano http://marianopeck.wordpress.com

May 10, 2012

[Pharo-project] [update 2.0] #20063

by Marcus Denker

20063 ----- Issue 5852: remove NepaleseEnvironment http://code.google.com/p/pharo/issues/detail?id=5852 Issue 5312: Move/Deprecate StandardFileStream browserRequest protocol http://code.google.com/p/pharo/issues/detail?id=5312 -- Marcus Denker -- http://marcusdenker.de

May 10, 2012

Re: [Pharo-project] [Vm-dev] Re: StackVM on iOS: the return

by phil＠highoctane.be

I have been able to get it build. Set ConfigurationBuilDir to $(BUILD_DIR)/$(CONFIGURATION) and the next entry (temp) to $(PROJECT_TEMP_DIR)/$(CONFIGURATION) This will make it build. But then, this is what I get with the code base in the Xcode debug log when running on the iPad: 2012-05-10 10:01:39.695 iStackVM[1954:707] Application windows are expected to have a root view controller at the end of application launch errno 12 startOfmmapForANONMemory failed: Cannot allocate memory At this point, either we can look at this at PharoConf or this path is definitely dead in the water for me. I'll switch back to regular Xcode Objective-C and other platforms as this is not looking like a very viable target despite the potential benefits. Enough time lost. That's too bad since iPad is the fastest growing consumer level device taking over the world and it is not getting enough love. CMake reminders me of Maven2: an excellent tool, provided you invest 3 months straight in getting all the warts out. A single basic Xcode project would suffice and be easier to maintain. Phil 2012/5/10 Mariano Martinez Peck <marianopeck(a)gmail.com> > > > On Thu, May 10, 2012 at 9:51 AM, Esteban Lorenzano <estebanlm(a)gmail.com>wrote: > >> >> Hi, >> >> yes... cmake is still not making a good job on creating xcode projects. >> For now, I touch that manually after generation, I still didn't find the >> time to correct it... if you find a way, please let me know. >> >> > Indeed. I had the same problem but no working solution. See: > http://forum.world.st/Problem-with-external-plugins-with-automated-XCode-pr… > > > >> btw... I think this vm related stuff belongs to vm-dev list, I'm >> redirecting there. >> >> best, >> Esteban >> >> On May 10, 2012, at 9:46 AM, phil(a)highoctane.be wrote: >> >> > Hello >> > >> > I've been updating the blessed/ thing from git (pull, merge master), >> taken a fresh image, loaded the 4.7 and generated sources. >> > >> > Cmake and fix works. >> > >> > Project opens in XCode 4.3 >> > >> > But... >> > >> > The linking step fails because the .a files for the plugins aren't >> found. >> > >> > I can't figure out why since all this Cmake machinery makes a ton of >> scripts all over the place. >> > >> > Any clue to get me out of that? >> > >> > Thanks! >> > >> > Philippe Back >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > > -- Philippe Back "Helping you hit the top 3 outcomes you really want to achieve" Mob: +32(0) 478 650 140 | Fax: +32 (0) 70 408 027 Mail: phil(a)highoctane.be| Web: http://philippeback.eu | Blog: http://philippeback.be High Octane SPRL rue cour Boisacq 101 1301 Bierges

May 10, 2012

Re: [Pharo-project] StackVM on iOS: the return

by phil＠highoctane.be

Which list is that? So that I can register. Phil 2012/5/10 Esteban Lorenzano <estebanlm(a)gmail.com> > Hi, > > yes... cmake is still not making a good job on creating xcode projects. > For now, I touch that manually after generation, I still didn't find the > time to correct it... if you find a way, please let me know. > > btw... I think this vm related stuff belongs to vm-dev list, I'm > redirecting there. > > best, > Esteban > > On May 10, 2012, at 9:46 AM, phil(a)highoctane.be wrote: > > > Hello > > > > I've been updating the blessed/ thing from git (pull, merge master), > taken a fresh image, loaded the 4.7 and generated sources. > > > > Cmake and fix works. > > > > Project opens in XCode 4.3 > > > > But... > > > > The linking step fails because the .a files for the plugins aren't found. > > > > I can't figure out why since all this Cmake machinery makes a ton of > scripts all over the place. > > > > Any clue to get me out of that? > > > > Thanks! > > > > Philippe Back > > > -- Philippe Back "Helping you hit the top 3 outcomes you really want to achieve" Mob: +32(0) 478 650 140 | Fax: +32 (0) 70 408 027 Mail: phil(a)highoctane.be| Web: http://philippeback.eu | Blog: http://philippeback.be High Octane SPRL rue cour Boisacq 101 1301 Bierges

May 10, 2012

Re: [Pharo-project] Redirecting Transcript

by Mariano Martinez Peck

On Thu, May 10, 2012 at 9:27 AM, Sven Van Caekenberghe <sven(a)beta9.be>wrote: > > On 10 May 2012, at 04:47, Sean P. DeNigris wrote: > > > There were several list threads about redirecting the Transcript e.g. to > > stdout... Is this available now in Pharo? If so, how do I redirect it to > > stdout? > > Have a look at NonInteractiveTranscript. > > ---- > > I am NonInteractiveTranscript, a replacement for Transcript, writing > everything to a file or stdout. > > This is useful when running headless. > > NonInteractiveTranscript file install. > > To connect to the output stream of the virtual machine process choose > stdout. > > NonInteractiveTranscript stdout install. > > An example, using various methods. > > | transcript | > transcript := NonInteractiveTranscript new. > transcript cr; << 'This is a test'; space; print: #(1 2 3). > transcript cr; nextPut: $|; tab; nextPut: $#; nextPutAll: '-1-'; space; > print: Float pi. > Collection subclassesDo: [ :each | transcript cr; print: each ]. > transcript crShow: 'Done!'. > transcript close. > > --- > > There is more in Pharo than you think ;-) > And even more black magic. Since you can do: Smalltalk at #Transcript put: NonInteractiveTranscript hahahah > > > Sven > > > -- > Sven Van Caekenberghe > http://stfx.eu > Smalltalk is the Red Pill > > > > > > -- Mariano http://marianopeck.wordpress.com

May 10, 2012

Re: [Pharo-project] FileList efficiency could hardly be worse

by Mariano Martinez Peck

Thanks Nicolas. I would appreciate any effort in this directory since I also have a 10gb package-cache and yes, I know it is slow. If you can provive a slice :) On Thu, May 10, 2012 at 9:44 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > :) > > indeed. Imagine my 10 GB package cache. > > Stef > > > On May 10, 2012, at 12:18 AM, Nicolas Cellier wrote: > > > The efficiency of FileList>>listForPattern: is something which should > > deserve a bit more care. > > > > It tries to sort the files, for example by name, but wants to display > > directory first > > ^ [ :x :y | |xIsDir| > > ((xIsDir := x isDirectory) = y isDirectory) > > ifTrue: [ x basename <= y basename ] > > ifFalse: [ > > "directories always precede files" > > xIsDir ]] > > > > Alas, this isDirectory test cost you an arm: > > > > FileReference>>isDirectory > > ^ filesystem isDirectory: path > > > > FileSystem>>isDirectory: aResolvable > > "Resolve the argument, and answer true if the result refers > > to a directory, false if it refers to a file or doesn't exist." > > > > ^ store isDirectory: (self resolve: aResolvable) > > > > FileSystemStore>>isDirectory: aPath > > aPath isRoot ifTrue: [ ^ true ]. > > self > > nodeAt: aPath > > ifPresent: [ :entry | ^ self basicIsDirectory: entry ] > > ifAbsent: [ ^ false ]. > > > > DiskStore>>nodeAt: aPath ifPresent: presentBlock ifAbsent: absentBlock > > | name| > > aPath isRoot ifTrue: [ ^ presentBlock value: self rootNode ]. > > "| encodedPath encodedBasename entry | > > encodedPath := Primitives encode: (self stringFromPath: aPath > parent). > > encodedBasename := Primitives encode: aPath basename. > > entry := Primitives lookupDirectory: encodedPath filename: > encodedBasename. > > ^ entry == #badDirectoryPath > > ifTrue: absentBlock > > ifFalse: [ > > entry at: 1 put: aPath basename. > > presentBlock value: entry ]." > > name := aPath basename. > > self > > directoryAt: aPath parent > > ifAbsent: absentBlock > > nodesDo: > > [ :entry | > > (self filename: (entry at: 1) matches: name) > > ifTrue: [ ^ presentBlock value: entry ] ]. > > ^ absentBlock value > > > > Arghh, it scans the whole parent directory again! > > If sort is O(n log n), then we transform it into O(2 n^2 log n). > > > > Try to browse your package-cache if you're not a chicken. > > Seriously, it's unusable... > > > > Nicolas > > > > > -- Mariano http://marianopeck.wordpress.com

May 10, 2012

Re: [Pharo-project] [Vm-dev] Re: StackVM on iOS: the return

by Mariano Martinez Peck

On Thu, May 10, 2012 at 9:51 AM, Esteban Lorenzano <estebanlm(a)gmail.com>wrote: > > Hi, > > yes... cmake is still not making a good job on creating xcode projects. > For now, I touch that manually after generation, I still didn't find the > time to correct it... if you find a way, please let me know. > > Indeed. I had the same problem but no working solution. See: http://forum.world.st/Problem-with-external-plugins-with-automated-XCode-pr… > btw... I think this vm related stuff belongs to vm-dev list, I'm > redirecting there. > > best, > Esteban > > On May 10, 2012, at 9:46 AM, phil(a)highoctane.be wrote: > > > Hello > > > > I've been updating the blessed/ thing from git (pull, merge master), > taken a fresh image, loaded the 4.7 and generated sources. > > > > Cmake and fix works. > > > > Project opens in XCode 4.3 > > > > But... > > > > The linking step fails because the .a files for the plugins aren't found. > > > > I can't figure out why since all this Cmake machinery makes a ton of > scripts all over the place. > > > > Any clue to get me out of that? > > > > Thanks! > > > > Philippe Back > > -- Mariano http://marianopeck.wordpress.com

May 10, 2012

Re: [Pharo-project] StackVM on iOS: the return

by Esteban Lorenzano

Hi, yes... cmake is still not making a good job on creating xcode projects. For now, I touch that manually after generation, I still didn't find the time to correct it... if you find a way, please let me know. btw... I think this vm related stuff belongs to vm-dev list, I'm redirecting there. best, Esteban On May 10, 2012, at 9:46 AM, phil(a)highoctane.be wrote: > Hello > > I've been updating the blessed/ thing from git (pull, merge master), taken a fresh image, loaded the 4.7 and generated sources. > > Cmake and fix works. > > Project opens in XCode 4.3 > > But... > > The linking step fails because the .a files for the plugins aren't found. > > I can't figure out why since all this Cmake machinery makes a ton of scripts all over the place. > > Any clue to get me out of that? > > Thanks! > > Philippe Back

May 10, 2012