February 2016 - Pharo-dev - lists.pharo.org

Call for action for Roassal
by Alexandre Bergel March 10, 2016

March 10, 2016

Dear community, As you may have seen, Roassal has entered a stabilization phase. The book AgileVisualization.com will soon be released. After its release, Roassal will go over a new development phase. In order to prepare it, I am asking this question: What are the 3 aspects you would like to see improved in Roassal? You can answer publicly or by sending private messages. Kind regards, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

7 29

Starting to add class comment and test on BlElements
by stepharo March 6, 2016

March 6, 2016

Hi blockers and alek in particular, the code is cool and I like that each method is commented. I'm starting to write a real class comment that we will be able to use in a documentation. But I cannot run the example so this is difficult to write tests. So Alek how do you know that you make progress? Where should I start? I thought BlElement was the starting point. Side note: Now I wonder if we want to have all the assert: May be yes and we should have an opal plugin to turn them off after. allChildrenDo: aBlock "Evaluate aBlock for all my children gathered recursively (excluding the receiver). aBlock must not be nil. aBlock must accept exactly one argument" self assert: aBlock isNotNil. self assert: aBlock argumentCount = 1. self childrenDo: [ :child | aBlock value: child. child allChildrenDo: aBlock ] Stef

5 6

Who is using Pharo Launcher and for what
by Damien Cassou March 6, 2016

March 6, 2016

For my CV, I need to know who is using the stuff I'm doing. If you use the Pharo Launcher, could you please tell me in which context (e.g., which company, open-source project) and what you use it for (e.g., download from CI, standard Pharo)? I don't need long paragraphs, just give me the keywords please. Thanks -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." --Winston Churchill

15 20

Rubric mutability issue in RubTextComposer binary search
by Aliaksei Syrel March 5, 2016

March 5, 2016

Hi, seems like there is a rather rare bug in Rubric. I opened an issue with explanation: https://pharo.fogbugz.com/f/cases/15153/Rubric-mutability-issue-in-RubTextC… Would be nice to fix it until release. It was caught in Spotter - as it heavily uses multithreading. Any suggestions are welcome if it is known :) Cheers, Alex

3 4

MemoryFileSystemFile>>#readStream forces String
by Udo Schneider March 2, 2016

March 2, 2016

All, is there any reason why MemoryFileSystemFile>>#readStream forces it's content to a String (#aString)? readStream ^ ReadStream on: self bytes asString from: 1 to: size I'm parsing XML files from an in-memory ZIP Archive and had some real problem with non-ASCII characters. Took me some while to figure out reading from the in-memory-archive returns a String. This prevents the XML Parser from doing a PI based decoding (utf-8 in this case). Just as a sidenote: Although the GT-Spotter/XML Integration relies on FileReference it assumes that the file is in the DiskFilesystem (some methods only pass a Path). Is this intentional? If not I'd try to fix it on the run. Thanks, Udo

4 8

New Cog VMs available
by Eliot Miranda March 1, 2016

March 1, 2016

... at http://www.mirandabanda.org/files/Cog/VM/VM.r3632. These include 64-bit VMs whose Smalltalk execution and FFI are functional. However, their SocketPlugin is more than somewhat broken. Executing the SocketPlugin tests results in a hard lockup, at least on Mac OS X. This is my next focus for 64-bits. ------------------------------------------------------------------------ CogVM binaries as per VMMaker.oscog-eem.1700/r3632 General: Fix serious bug in jitted perform: primitive. Thanks to Stephane Rollandin for finding and to Levente Uzoni for diagnosing the bug. If the argument count is one greater than the max number of register arguments (2 in Spur, hence perform:with:with:) then the code to remove the receiver and arguments from the stack neglects to remove the receiver and selector. Spur: Fix special selector arithmetic and comparison in the 64-bit Cogit. My original code for genJumpNotSmallIntegersIn:andScratchReg: merely jumped if the tags differed, hence not jumping if both arguments were SmallFloat64s (or both Characters). The new code requires an additional scratch register; hence add genJumpNotSmallIntegersIn:andScratch:scratch:. Fix bug in markAndTraceWeaklingsFrom:. Fields of weaklings may be immediate so must use followOopField:ofObject: not followObjField:ofObject:. Fix https://pharo.fogbugz.com/f/cases/17536/VM-Crash-when-adding-an-iVar-to-a-s… . When weaklings (and when ephemerons) are scan-marked forwarders must be coped with. 64-bit VMs: Fix a bug in printHex: for 64-bits (faulty arithmetic). ThreadedFFIPlugin: Fix the remaining 64-bit issues in the ThreadedFFIPlugin. The X64SysVFFIPlugin now passes the test suite. Hence include the FFI plugin in 64-bit VMs. Make the SqueakFFIPrims plugin internal in the Mac pharo builds. Mac VMs: Have the Mac OS X build install Localizable.strings. Add versions for Newspeak, Pharo and Squeak. Rename the key to SelectImagePanePrompt. Temporarily disable the Serial plugin in the Pharo Mac VM until we can track down the relevant platforms/iOS support for the Pharo extensions. Fix argument access on the iOS platform (Mac OS VMs). _,,,^..^,,,_ best, Eliot

5 6

Spotter changes broke CodePanel
by Stephan Eggermont March 1, 2016

March 1, 2016

I used to do CodePanel class>>spot GTSpotterMorph new extent: (World width / 3.25 @ (World height / 2.25)) asIntegerPoint; spotterModel: ((GTSpotter new) processorsFilter: (CodePanelProcessorFilter new configuredWith: [ :aProcessor | aProcessor actLogic: [ :aMethod :step | step exit. aMethod ifNil: [ self new openInWindowLabeled: 'Code panel' ] ifNotNil: [ |panel| panel := self new. panel openInWindowLabeled: 'Code panel'. panel newCardFor: aMethod.]]; candidatesLimit: 50 ])); openCenteredInWorld That now (since at least 50596) an interesting Brick error. Do I need to change my code? Stephan

3 15

removing of TestReviver
by Pavel Krivanek March 1, 2016

March 1, 2016

Hi, TestReviver that is a part of HudsonBuildTools20 and it is a tool that can process Fuel files generated by CI server. It is an UI tool dependent on Spec so it adds some mess to headless images without GUI that need to use HudsonBuildTools for SUnit reports. I propose to remove it from the standard image and move it to a separate SmalltalkHub project. It is not used directly in Pharo and will be easy to load it from the Catalog by people who need such functionality. Cheers, -- Pavel

3 2

What is the limit of prespur VM memory under Windows?
by Blondeau Vincent March 1, 2016

March 1, 2016

Hi, I am confronted with a memory issue under Windows. I have an image of 745Mo with a Moose model, and I cannot instantiate a string of 30Mo: I get a OutOfMemoryException. The theoretical limit is 2Go, isn't it? I have a prespur vm under a Windows 64 bits: Smalltalk vm version: 'NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.21 uuid: 4d9b9bdf-2dfa-4c0b-99eb-5b110dadc697 Dec 3 2015 NBCogit NativeBoost-CogPlugin-EstebanLorenzano.21 uuid: 4d9b9bdf-2dfa-4c0b-99eb-5b110dadc697 Dec 3 2015 https://github.com/pharo-project/pharo-vm.git Commit: 28d077d8df494ce050ca42c97c892471e8b8740c Date: 2015-10-16 12:02:43 +0200 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #15019 I set in Pharo.ini: AddressSpaceLimit=2000000000 What can I do to bypass the issue? Thanks in advance, Vincent !!!************************************************************************************* "Ce message et les pi?ces jointes sont confidentiels et r?serv?s ? l'usage exclusif de ses destinataires. Il peut ?galement ?tre prot?g? par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir imm?diatement l'exp?diteur et de le d?truire. L'int?grit? du message ne pouvant ?tre assur?e sur Internet, la responsabilit? de Worldline ne pourra ?tre recherch?e quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'exp?diteur ne donne aucune garantie ? cet ?gard et sa responsabilit? ne saurait ?tre recherch?e pour tout dommage r?sultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!"

5 8

Code Combat
by Ben Coman Feb. 29, 2016

Feb. 29, 2016

I was talking to my kids' primary school about teaching them programming, and one of the systems they are planning to use is Code Combat. It "teaches" programming by posing puzzles in an arcade adventure game setting. Both(only) Python and Javascript are catered for, but I notice its MIT licensed and *more importantly, that the media are CC licensed [1]. So, not immediately because I have a few things to get off my plate, but I thought I'd just survey who might be interested in collaborating on Code Combat Pharo - at least to the degree to determine how big the job would be. If you want to take a peek to hazard an opinion, you can create login here [2] to get free access to the basic levels. I found some instructions to install it locally to avoid paying to check out the other levels (but atm I've hit a snag with the last `npm start` step), and maybe take a peek inside data.tar.gz - as I understand it we have a MongoDB driver around somewhere. Open to your thoughts... cheers -ben [1] https://codecombat.com/legal [2] https://codecombat.com/ [3] https://project.altservice.com/issues/693

4 5