- Pharo-dev - lists.pharo.org

[Help Wanted] moderators for pharo mailing lists
by Marcus Denker March 13, 2017

March 13, 2017

Hi, The two Pharo Mailinglists (pharo-dev and pharo-users) are run using Mailman via a commercial provider. (Thanks to the Pharo Association, https://association.pharo.org <https://association.pharo.org/>) This means that we have nothing to do with regard to technical problems/issues or running the service itself. but nevertheless, there are 1-2 emails per month that end up in a moderation queue, mostly because they are very very large. It would be nice to have 1-2 people more to help with these (infrequent) moderation calls. If you are interested to help â> send a mail to me. Marcus

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How to use the serial port on MacOS X?
by olivier auverlot March 13, 2017

March 13, 2017

Hi, I try to use the serial port to communicate with an Arduino. On Linux, no problemo. I can open the serial port with the following code: | serialPort baudRate comPortNumber | baudRate := 31250. comPort := '/dev/ttyACM0'. serialPort := SerialPort new baudRate: 31250; dataBits: 8; stopBitsType: 1; parityType: 0; yourself. "the port is closed to ensure that it will be free" serialPort close. (serialPort openPort: comPort) isNil ifTrue: [ ^self error: 'COM port not available' ] ifFalse: [ serialPort inspect ]. serialPort close. But on MacOS X (10.11.6), the same code used with /dev/cu.usbmodel1411 doesn't run. The error is "Cannot open '/dev/cu.usbmodel1411'". I'm sure that is the correct serial port. If I type "more -f /dev/cu.usbmodel1411" in a terminal, the rx/tx leds of the Arduino are blink. Someone has an idea about this problem that is not specific of the Arduino but concerns the generic usage of the serial port with Pharo? Best regards Olivier ps: I can't test on Windows but I'm interested by a feedback.

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[pharo-project/pharo-core]
by GitHub March 13, 2017

March 13, 2017

Branch: refs/tags/60439 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 228585: 60439
by GitHub March 13, 2017

March 13, 2017

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 2285859f8218c1d33ca591886f51bb6c98a097eb https://github.com/pharo-project/pharo-core/commit/2285859f8218c1d33ca59188… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2017-03-13 (Mon, 13 Mar 2017) Changed paths: M BaselineOfIDE.package/BaselineOfIDE.class/instance/baseline/baseline_.st M BaselineOfIDE.package/BaselineOfIDE.class/instance/baseline/groups_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60438.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60439.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60438.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60439.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st A ScriptingExtensions-Tests.package/extension/StringTest/instance/testAsClass.st A ScriptingExtensions-Tests.package/extension/StringTest/instance/testAsClassIfAbsent.st A ScriptingExtensions-Tests.package/extension/StringTest/instance/testAsClassIfPresent.st A ScriptingExtensions-Tests.package/extension/SymbolTest/instance/testAsClass.st A ScriptingExtensions-Tests.package/extension/SymbolTest/instance/testAsClassIfAbsent.st A ScriptingExtensions-Tests.package/extension/SymbolTest/instance/testAsClassIfPresent.st R ScriptingExtensions.package/extension/StringTest/instance/testAsClass.st R ScriptingExtensions.package/extension/StringTest/instance/testAsClassIfAbsent.st R ScriptingExtensions.package/extension/StringTest/instance/testAsClassIfPresent.st R ScriptingExtensions.package/extension/SymbolTest/instance/testAsClass.st R ScriptingExtensions.package/extension/SymbolTest/instance/testAsClassIfAbsent.st R ScriptingExtensions.package/extension/SymbolTest/instance/testAsClassIfPresent.st Log Message: ----------- 60439 19822 ScriptingExtensions tests must be standalone https://pharo.fogbugz.com/f/cases/19822 19809 Failing test: WeakAnnouncerTest>>#testNoDeadWeakSubscriptions https://pharo.fogbugz.com/f/cases/19809 http://files.pharo.org/image/60/60439.zip

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debugger feature I would pay for
by stepharong March 13, 2017

March 13, 2017

Hi doru You have some features and I would love to use it for real. Here is my scenario: I have a test failing in pillar dev but not in my previous image. :( I want to run a test in an image (green test). - get the test execution stack In another image (dev), I would like to load the green test stack and say to the debugger - execute the test in the local image up to there is a change by comparison with the other. I would pay for this feature. Stef

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Debugger: is there a way to skip a message?
by stepharong March 13, 2017

March 13, 2017

Hi I need to skip message while debugging and I thought that it was possible. May be I do not see it. Stef -- Using Opera's mail client: http://www.opera.com/mail/

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Growing large images: the case of Moose models
by ClÃ©ment Bera March 12, 2017

March 12, 2017

Hello everyone, This morning I investigated with Vincent Blondeau a problem reported by the Moose community a while ago: loading Moose model is slower in Spur (Pharo 5+) than in pre-Spur (Pharo 4 and older). In general, this problem was present for anyone growing images to a significant size. To investigate the problem, we loaded a 200Mb[3] Moose model on a 250Mb image, growing the image to 450Mb. Loading such a model takes 2 minutes in Spur and 1m30s in pre-Spur VMs. Using the stable Pharo VM, the analysis results were the following: - total time spent to load the Model: 2 minutes - time spent in full GC: 1 minute (4 fullGCs) - time spent in scavenges[1]: 15 seconds On the 2 minutes spent, we have 50% of the time spent in full GCs, 12.5% in scavenges, 37.5% executing code. We then used the latest VM that features the new compactor (VM from beginning of March 2017 and over). The full GC execution time went down from 1 minute to 2 seconds. In addition, we increased the size of Eden[2] from 4Mb to 12Mb. Time spent in scavenges decreased from 15 seconds to 5 seconds. Overall, loading the model is now taking ~50 seconds instead of 2 minutes. To increase Eden size, one needs to run a script similar to: | currentEdenSize desiredEdenSize | currentEdenSize := Smalltalk vm parameterAt: 44. desiredEdenSize := currentEdenSize * 4. Smalltalk vm parameterAt: 45 put: desiredEdenSize. *And then restart the image.* I hope this report can be useful for some of you. I will try to make a blog post out of it, detailing other GC settings one can change from the image to improve performance. Best, Clement [1] A scavenge is basically the garbage collection of only young objects [2] Eden is basically the space where objects are initially allocated. [3] All numbers in the report are order of magnitudes and not precise numbers

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perform:withArguments: and collection
by Peter Uhnak March 12, 2017

March 12, 2017

Hi, Apparently sending #perform:withArguments: and using OrderedCollection leads to PrimitiveFailed. I can recast it, but maybe we can just add (argArray isArray) ifFalse: [ ^ self error: 'Arguments must be instance of Array' ] to make the error less cryptic. (or allow OrderedCollection, but since the operation is done in VM it might be needlessly more work.) Peter

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Did we lose edit-in-place in GT Inspector in Pharo 6?
by Sean P. DeNigris March 12, 2017

March 12, 2017

Double clicking on a value in the raw tab seems to have no effect. p.s I asked twice in Discord with no response. I guess I'm finally getting old enough that I don't understand how to use new platforms ;) ----- Cheers, Sean -- View this message in context: http://forum.world.st/Did-we-lose-edit-in-place-in-GT-Inspector-in-Pharo-6-… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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what is the SpecLayout architecture?
by Peter Uhnak March 12, 2017

March 12, 2017

Hi, this is probably a tall order, but is there some description of SpecLayout architecture? To clarify: I am NOT asking how to use SpecLayout, I am asking how SpecLayout works internally. iirc SpecInterpreter was rewritten by Johan & Stef, so maybe you guys have some notes? Thanks, Peter

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