November 2013 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] [Vm-dev] Frequent SegFaults in PharoVM with Pharo 3.0
by Max Leske Nov. 26, 2013

Nov. 26, 2013

On 07.11.2013, at 00:27, vm-dev-request(a)lists.squeakfoundation.org wrote: > Date: Wed, 6 Nov 2013 19:23:47 -0200 > From: Mariano Martinez Peck <marianopeck(a)gmail.com> > Subject: Re: [Vm-dev] Frequent SegFaults in PharoVM with Pharo 3.0 > To: Squeak Virtual Machine Development Discussion > <vm-dev(a)lists.squeakfoundation.org> > Message-ID: > <CAA+-=mWDtHGQWSHx-m4u37Kj0UAMx=UG=qUCz+wMvgDT8BaQZQ(a)mail.gmail.com> > Content-Type: text/plain; charset="windows-1252" > > Max, did you try with Eliot VMs besides the pharo ones? No, I havenât. I can try (though only on my machine), but if I canât reproduce the SegFault that doesnât mean much unfortunately. It took me 10 to 20 tries with the PharoVM tooâ¦ Iâll try anyway and let you know what I find. Max > > Thanks > > > On Wed, Nov 6, 2013 at 6:04 PM, Max Leske <maxleske(a)gmail.com> wrote: > >> >> Hi >> >> Weâve been encountering frequent SegFaults when running the Fuel tests on >> the Pharo CI (https://ci.inria.fr/pharo-contribution/job/Fuel/) Since >> today Iâve also been able to reproduce the SegFaults on my MacBook Pro (OS >> X 10.9) too. We have not been able to determine the cause of the SegFault >> but we can produce SegFaults often, although not reliable (more reliable on >> the CI). >> >> The CI uses the stable VM: >> http://files.pharo.org/vm/pharo/linux/stable.zip >> I use a newer version from October on my machine: >> http://files.pharo.org/vm/pharo/mac/273.zip >> >> Iâve attached all the dumps of the crashes I was able to produce on my >> machine, together with Appleâs crash logs. >> >> Iâve been able to deduce the following: >> - garbage collection seems to be a trigger for the SegFault. When one of >> the methods FLMethodContextSerialization>>testFuelShouldIgnoreFuel and >> FLMethodContextSerialization>>testMethodContextWithNilPc contain the line >> â3 timesRepeat: [Smalltalk garbageCollect]â the SegFault appears nearly >> always (on CI). When I remove the line the builds run through. >> - Not all methods with the garbage collect line trigger a SegFault (I >> could only identify those two) >> - the garbage collect line itself suffices as a trigger in the mentioned >> methods. >> - The number of tests (amount of used memory?) seems to influence the >> appearence of the SegFault (e.g. loading "DevelopmentGroup" seems to >> trigger it more often than loading âBenchmarksâ) >> - the SegFault always appears after the tests with the garbage collect >> line have been run, never before >> - the VM canât write the crash.dmp every time >> >> Since the SegFaults are so random I cannot give you an image to reproduce >> the problem. Iâve had the best results using a fresh 3.0 image ( >> http://files.pharo.org/image/30/30549.zip) and then evaluating the >> following in a workspace: >> >> Gofer it >> smalltalkhubUser: 'Pharo' project: 'Fuel'; >> package: 'ConfigurationOfFuel'; >> load. >> >> ((Smalltalk at: #ConfigurationOfFuel) project version: #bleedingEdge) >> load: 'DevelopmentGroup'. >> >> HDTestReport >> runClasses: (TestCase allSubclasses select: [ :class | class name >> beginsWith: 'FL']) >> named: âfoo' >> >> If it doesnât work, try using the TestRunner manually. Select the default >> Fuel tests (alphabetically at F) and the additional Fuel tests (at the >> bottom of the list) and run them. >> >> If anybody has any clue about what could be going on Iâd really appreciate >> any input. Iâll happily provide more information if I can. >> >> Thanks for reading :) >> Max >> >> >> > > > -- > Mariano > http://marianopeck.wordpress.com

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RabbitMQ support (was Re: The Second Coming of Java article)
by Frank Shearar Nov. 26, 2013

Nov. 26, 2013

On 26 November 2013 12:21, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > On the front of interoperability, I personally have chosen to go the > RabbitMQ route, it allows me to wire all kinds of things together with some > room for scale. What are you using on the Smalltalk side? I know Tony Garnock-Jones did some basic parsing of AMQP, but I'm unaware of anything more than that. Do you FFI to the C client library? Something else? frank

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Re: [Pharo-dev] Nautilus no longer guards against changed methods
by Stephan Eggermont Nov. 26, 2013

Nov. 26, 2013

Chris wrote: >Sean wrote: >> In general in UIs, he best approach is to do what the user requests without >> hesitation, and make everything undoable. > >Ah, thanks for saying that. People need to be reminded. I think the >tablet craze has lurched the world back into modal UI's being "okâ. I donât find modal UIâs ok, but this non-modal UIs is worse. It is a mess that is not going to get better by patching up and needs to be reverted. Stephan

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[pharo-project/pharo-core]
by GitHub Nov. 26, 2013

Nov. 26, 2013

Branch: refs/tags/30598 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 396dfd: 30598
by GitHub Nov. 26, 2013

Nov. 26, 2013

Branch: refs/heads/3.0 Home: https://github.com/pharo-project/pharo-core Commit: 396dfdf0b704ad31806b0d5914e98c535ba18474 https://github.com/pharo-project/pharo-core/commit/396dfdf0b704ad31806b0d59… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2013-11-26 (Tue, 26 Nov 2013) Changed paths: M Collections-Strings.package/String.class/instance/comparing/findSubstringViaPrimitive_in_startingAt_matchTable_.st A Morphic-Base.package/MorphTreeListManager.class/instance/selection change/silentlySetSelectedMorph_.st M Morphic-Base.package/MorphTreeNodeMorph.class/instance/private/selectedWithoutNotifyingComplexContents_.st A Morphic-Base.package/MorphTreeNodeMorph.class/instance/private/takeHighlight.st M Morphic-Base.package/MorphTreeNodeMorph.class/instance/updating/update_.st A ScriptLoader30.package/ScriptLoader.class/instance/pharo - scripts/script253.st A ScriptLoader30.package/ScriptLoader.class/instance/pharo - updates/update30598.st M ScriptLoader30.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 30598 12245 put back pragmas in #findSubstringViaPrimitive:... https://pharo.fogbugz.com/f/cases/12245 12244 Enhancement again in MorphTreeNodeMorph https://pharo.fogbugz.com/f/cases/12244 http://files.pharo.org/image/30/30598.zip

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[pharo-project/pharo-core]
by GitHub Nov. 26, 2013

Nov. 26, 2013

Branch: refs/tags/30597 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] f41e7d: 30597
by GitHub Nov. 26, 2013

Nov. 26, 2013

Branch: refs/heads/3.0 Home: https://github.com/pharo-project/pharo-core Commit: f41e7d140b0222035b4e2e5aa24fcc68dc12b230 https://github.com/pharo-project/pharo-core/commit/f41e7d140b0222035b4e2e5a… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2013-11-25 (Mon, 25 Nov 2013) Changed paths: R Deprecated30.package/extension/DialogWindowModel/instance/toolbar.st A Nautilus.package/PackageTreeGroupSelection.class/instance/accessing/methodsFor_.st A Nautilus.package/PackageTreeGroupSelection.class/instance/accessing/methodsFor_categorised_.st A Nautilus.package/PackageTreeGroupSelection.class/instance/accessing/protocolsFor_.st M Nautilus.package/PackageTreeModel.class/instance/accessing/rootNodes.st A Nautilus.package/PackageTreeNautilus.class/class/settings/nautilusSettingsOn_.st A Nautilus.package/PackageTreeNautilus.class/class/settings/showGroupsOnTop.st A Nautilus.package/PackageTreeNautilus.class/class/settings/showGroupsOnTop_.st M Nautilus.package/PackageTreeNautilus.class/definition.st A Nautilus.package/PackageTreeNautilus.class/instance/accessing/defaultUIClass.st R Nautilus.package/PackageTreeNautilus.class/instance/accessing/uiClass.st A Nautilus.package/PackageTreeNautilusUI.class/instance/accessing/selectedGroup.st M Nautilus.package/PackageTreeNautilusUI.class/instance/accessing/selectedPackageWithoutChangingSelection_.st M Nautilus.package/PackageTreeNautilusUI.class/instance/accessing/showGroups_.st M Nautilus.package/PackageTreeNautilusUI.class/instance/displaying/buildFirstColumn_.st M Nautilus.package/PackageTreeNautilusUI.class/instance/private/clearPackageSelections.st M Nautilus.package/PackageTreeNautilusUI.class/instance/private/isSelectedPackage_.st A Nautilus.package/PackageTreeNautilusUI.class/instance/private/loadList2.st M Nautilus.package/PackageTreeNautilusUI.class/instance/private/resetShowHierarchy.st A ScriptLoader30.package/ScriptLoader.class/instance/pharo - scripts/script252.st A 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Spec-MorphicAdapters.package/SpecTreeNodeModel.class/instance/protocol/selected_.st A Spec-MorphicAdapters.package/extension/Morph/instance/setModal_.st R Spec-PolyWidgets.package/DiffModel.class/README.md R Spec-PolyWidgets.package/DiffModel.class/class/accessing/spec.st R Spec-PolyWidgets.package/DiffModel.class/class/example/exampleWithOptions.st R Spec-PolyWidgets.package/DiffModel.class/class/example/exampleWithoutOptions.st R Spec-PolyWidgets.package/DiffModel.class/definition.st R Spec-PolyWidgets.package/DiffModel.class/instance/accessing/contextClass.st R Spec-PolyWidgets.package/DiffModel.class/instance/accessing/contextClass_.st R Spec-PolyWidgets.package/DiffModel.class/instance/accessing/leftText.st R Spec-PolyWidgets.package/DiffModel.class/instance/accessing/leftText_.st R Spec-PolyWidgets.package/DiffModel.class/instance/accessing/rightText.st R Spec-PolyWidgets.package/DiffModel.class/instance/accessing/rightText_.st R Spec-PolyWidgets.package/DiffModel.class/instance/initialize/initialize.st R Spec-PolyWidgets.package/DiffModel.class/instance/initialize/showOptions.st R Spec-PolyWidgets.package/DiffModel.class/instance/initialize/showOptions_.st Log Message: ----------- 30597 12243 re-enable group filtering button https://pharo.fogbugz.com/f/cases/12243 12235 EyeInspector is broken on ToolRegistry https://pharo.fogbugz.com/f/cases/12235 12216 Move DiffModel in widget + Fix the selection in TreeModel https://pharo.fogbugz.com/f/cases/12216 http://files.pharo.org/image/30/30597.zip

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Better layout definition in new Nautilus Browser with filter dialog
by Juraj Kubelka Nov. 26, 2013

Nov. 26, 2013

Hi I do not know how to do the better layout of input package filter which was integrated to latest Pharo 3.0 image. It is defined in method PackageTreeNautilusUI>>buildFirstColumn: (it means package column) And code looks like: ^ PanelMorph new changeProportionalLayout; addMorph: self buildPackageSearch â <ââ this is new filter input dialog" fullFrame: ((0@0 corner: 1(a)0.1)) â and his layout definition" addMorph: self buildList â <ââ this is package listâ fullFrame: ((0(a)0.1 corner: 1@1) asLayoutFrame bottomOffset: -25); â and his layout definition" addMorph: buttons â <ââ Hierarchy button" fullFrame: ((0@1 corner: 1@1) asLayoutFrame topOffset: -25); â and his layout" hResizing: #spaceFill; vResizing: #spaceFill; yourself. So, now filter dialog and package list are flexible and change their height according to window size. I have tried to define input dialog of fixed size (according to font size), but I do not know how. Any suggestion? Thanks, Jura

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Re: [Pharo-dev] Nautilus no longer guards against changed methods
by Stephan Eggermont Nov. 25, 2013

Nov. 25, 2013

Sven wrote: >This is pretty importart, I lost some changes already. Me too. 12223 We already had a discussion about this. The current approach definitely was not the result of that discussion. We need to revert to the modal behavior, mixing editing with navigation history is not clean. Stephan

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Re: [Pharo-dev] VM with fragmented memory
by Alexandre Bergel Nov. 25, 2013

Nov. 25, 2013

Hi Eliot, I have a question still on segmented memory. Consider an object âc := OrderedCollection newâ. It is likely that the internal "arrayâ and the object c will be in the same generation and in the same memory segment. If I add, letâs say, 30 000 000 elements into c. After the addition the array will be very very big. Which means that it may be in a different segment memory than the one that contains âcâ. Do you feel this may be a problem? I am thinking about a long jump between c and array. Long jumps cost more than short jumps right? Do you feel there are some suboptimal situation with this situation? Alexandre NB: I cc the mailing list to see whether other may help in understand better whatâs going on with segment and generations -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. On Nov 19, 2013, at 1:37 PM, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > Hi Alexandre, > > > On Mon, Nov 18, 2013 at 7:40 AM, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > Hi Eliot, > > Stef told me you are working hard on improving the Pharo VM. > In particular making the VM support fragmented memory. If I understand correctly, this will relieve the VM from having a continuous block of memory to hold the whole image. Really cool! > > A better term is segmented memory. fragmentation in memory management means free space getting divided into too small pieces to be useful. > > I have a general question regarding VM. Are you aware of other Virtual machines supporting this? Does the Java VM support fragmented memory? .Net? V8? > > Any VM that uses the train algorithm supports segmented memory. Any VM that uses "pools" or "regions" uses segmented memory. VisualWorks' VM supports segments. I'm pretty sure that V8 .Net & HotSpot provide segmented memory. > > > I would like to mention this in a research paper I am working on. > > Cheers, > Alexandre > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > > > > -- > best, > Eliot

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