Squeak-dev July 2014

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31 participants
223 discussions

New Cog VMs available
by Eliot Miranda 03 Jul '14

03 Jul '14

...at http://www.mirandabanda.org/files/Cog/VM/VM.r3029/. I've taken down the 3021 and 3024 VMs as their LargeIntegers code was badly broken. That's fixed now. The major changes are that Spur now correctly handles forwarding in primitives invoked from machine code, and that sends to Characters have the expected performance. CogVM binaries as per VMMaker.oscog-eem.797/r3029 Fix mixup of old & young spaces in primitiveVMParameter, and comment some new parameters. Fix return types for positive[64/32]BitValueOf:. positive32BitValueOf: must answer a usqInt, positive64BitValueOf: must answer a usqLong. Use positiveMachineIntegerValueOf: to decode arg in primitiveNewWithArg and ensure positiveMachineIntegerValueOf: is inlined there-in. Spur: Fix inline cache for Characters in Spur. Existing code failed all machine code sends to characters, creating PICs at those send sites which failed back to the interpreter. Implement forwarder following on primitive failure for all primitive calls from machine code. Allow the JIT to not compile primitiveDoNamedPrimitiveWithArgs to avoid any potential complications. Have spur's fetchClassOfNonImm: answer nilObj for forwarders to avoid assert fails. Fix assert fails in updateStateOfSpouseContextForFrame:WithSP: and elsewhere with forwarders. Add read barriers to primitiveSuspend and synchronousSignal:'s myList access, because the process list manipulation routines do no checking. Add assert checks for forwarders in the process list manipulation routines. Fix StackInterpreter>>actuallyFollowNecessaryForwardingInMethod:literalCount: so that it no longer corrupts the methodClassAssociation. Rewrite all the semaphore installing primitives to fail if the semaphore arg is neither a semaphore or nil instead of assuming if its not a semaphore it must be nil, so as to fail and retry when semaphores are forwarded (as they are when Semaphore is redefined). Implement isSemaphoreOop:/Obj: in the object memories to abstract away the code. Base Spur's on the class index of splObj: ClassSemaphore, avoiding the table lookup to derive the class. Make checkForEventsMayContextSwitch: treat all its semaphores consistently. These changes allow Cog Spur to redefine Process and/or Semaphore and not hang. Fix sign and overflow issues in instantiating larger objects and determining the size of large instances. Fix some freeChunk accesses that used fetchPointer:ofObject:. Make sure forwarders have accurate slot counts, bumping it to 1 if it was zero. Plugins: Fix LargeIntegersPlugin>>isNormalized: for forwarders, no longer assuming that if its arg isn't a SmallInteger it must be a large integer. Squash an assert fail in lengthOf:format: on forwarders by using numSlotsOfAny:. Fix the shift for divide issues in the LargeIntegersPlugin. Change the SmartSyntaxPluginCodeGenerator to generate code that ifdefs out the remapOop:in: rigmarole on Spur. Windows: Set the IMAGE_FILE_LARGE_ADDRESS_AWARE flag in the image header of the Windows executables to allow e.g. Spur to allocate more than 2Gb. Slang: Rip out the UseRightShiftForDivide optimization. It gets unsigned division wrong, and C compilers can and will optimize this correctly themselves. -- best, Eliot

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Updating VMs and possible conflicts
by Chris Cunnington 03 Jul '14

03 Jul '14

I did a bit of a survey of VMs on boxes 3 and 4. [1] My aim is to upgrade box4 to the latest Cog (non-Spur) VM available. I think I can do that in box4 with no fuss, as I don't think the Interpreter VM is installed. So I don't expect a conflict. It is worth noting that some binaries are stored in /usr/local/lib and others in /usr/lib. About where to put the .deb files. I guess the proper thing is to use cogdeb.zip in /root/localbuild and then copy the deb to /root/localdeb. Chris [1] BOX3 - start script used TEST FOR VERSION: cogvm -version r2776 /usr/bin/cogvm BINARIES AVAILABLE: /usr/lib/squeak/4.0-2776 /usr/local/lib/squeak/4.10.2-2793 /home/chrismuller/vm/lib/squeak/4.0-2761 /home/chrismuller/vm/lib/4.4.7-2357 localdebs: cogvm_2776-1_i386.deb squeakvm_20131020-1_i386.deb djbdns_1.05-2_amd64.deb squeakvm64_20131020-1_i386.deb squeak-sources_4.1-1_all.deb BOX3 - no start script used? TEST FOR VERSION: squeak -version cannot find VM to run image 'squeak' with option '' BINARIES AVAILABLE: /usr/local/lib/squeak/4.10.2-2793/squeakvm /home/davidlewis/[VM|VMCogUnixBuild|VMUnixBuild] /var/lib/jenkins/jobs/* localdebs: squeakvm_20131020-1_i386.deb squeakvm64_20131020-1_i386.deb

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Intent to upgrade box4 VM from VMr.2776 to VM.r2987
by Chris Cunnington 03 Jul '14

03 Jul '14

I intend to upgrade the VM on box4 VM.r2776 (Aug. 2013) to VM.r2987 (June 2014). The intention here is to refine the install/removal process. I just did this on my Debian Wheezy box, so it seems pretty straightforward. Installing: - get a Cog binary from mirandabanda.org - use Ken's cogdeb.zip to make a deb - install with dpkg (i.e. dpkg -i cogvm_2776-1_i386.deb) - execute "man squeak" to see if it's loaded Removing: - check the package name with dpkg-query -l - see it's actually called "coglinux" as opposed to cogvm or squeak - dpkg -r coglinux So, as I said, I just did this on my server and is seemed to work OK. I plan to upgrade the VM from last year's model (2776) to this year's (2987). If there's anything people with more LInux experience could add to this process, I'd be happy to hear it. Chris

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[Vm-dev] Bug in writing compressed stream when saving an mcz (was: New Cog VMs available...)
by David T. Lewis 03 Jul '14

03 Jul '14

On Wed, Jul 02, 2014 at 03:48:03PM -0700, Eliot Miranda wrote: > > On Wed, Jul 2, 2014 at 3:39 PM, Nicolas Cellier < > nicolas.cellier.aka.nice(a)gmail.com> wrote: > > > > Anyway, it happens that I cannot publish because there is a bug in my > > image (mostly an updated trunk image)... > > I'm currently stuck with ZipWriteStream(DeflateStream)>>updateHashAt: > > which tries to write at position 65537 in a buffer of length 65536 > > Huh? > > > > Ah, I've seen this recently too! I think it's just a corrupted mcz > package. Delete the package and download a fresh one and you could find > the bug evaporates. I saw it last weekend too. I thought that it was an improbable edge condition, so I did not mention it on squeak-dev until I could explain the bug. It is not a corrupted mcz. In my case, the failure occurred while trying to write a new mcz. We should move this to squeak-dev and figure out what is going on. Dave

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Daily Commit Log
by commits＠source.squeak.org 03 Jul '14

03 Jul '14

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2014-July/007132.html Name: Tests-fbs.300 Ancestors: Tests-nice.299 Our shiny new "About Squeak..." uses SystemReporter. =============================================

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The Trunk: Tests-fbs.300.mcz
by commits＠source.squeak.org 02 Jul '14

02 Jul '14

Frank Shearar uploaded a new version of Tests to project The Trunk: http://source.squeak.org/trunk/Tests-fbs.300.mcz ==================== Summary ==================== Name: Tests-fbs.300 Author: fbs Time: 2 July 2014, 10:33:26.696 pm UUID: 944c3f5e-ebef-c44b-8615-0ab6c2e0eb96 Ancestors: Tests-nice.299 Our shiny new "About Squeak..." uses SystemReporter. =============== Diff against Tests-nice.299 =============== Item was changed: ----- Method: PackageDependencyTest>>testMorphic (in category 'tests') ----- testMorphic self testPackage: 'Morphic' dependsExactlyOn: #( Balloon Collections Compiler EToys Files Graphics Kernel Monticello MonticelloConfigurations MorphicExtras Multilingual Network Sound System + SystemReporter 'ToolBuilder-Kernel' 'ToolBuilder-Morphic' Tools TrueType ).!

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Installing Squeak on a Raspberry Pi for newcomers
by tim Rowledge 02 Jul '14

02 Jul '14

I recently tried to answer a query on the Pi forum about getting Squeak images on a Pi/Raspbian. It was a lot more involved than I’d hoped and I really think we could do more to make life easier. The query and my answer are at - http://www.raspberrypi.org/forums/viewtopic.php?f=34&t=80556 and I would be interested in better answers. One important issue is that the current Scratch system installed by default in Raspbian requires a plain interpreter VM since it is an old format image that cannot run on the newer StackVM that supports the improved Scratch I’m developing for the Pi foundation. So, simply replacing the vm is not ok, we would need to have both in order to get the best from a 4.5 image. Extra confusion is caused (for me) by the assorted scripts that get involved; there is a ‘squeak’ shell script somewhere that does all sorts of stuff including opening a dialogue that is supposed to help you find an image to run but seemingly does nothing actually useful. There’s also a ‘scratch’ shell script that does other odd stuff. This is a problem very likely to be faced by a lot of newcomers stumbling across Squeak on their Pi’s. Anything we can do to make it *really* easy for people to try Squeak could pay off in a lot of interested new users. tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim People who deal with bits should expect to get bitten.

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The Inbox: HelpSystem-Core-kfr.60.mcz
by commits＠source.squeak.org 02 Jul '14

02 Jul '14

A new version of HelpSystem-Core was added to project The Inbox: http://source.squeak.org/inbox/HelpSystem-Core-kfr.60.mcz ==================== Summary ==================== Name: HelpSystem-Core-kfr.60 Author: kfr Time: 2 July 2014, 9:24:54.717 pm UUID: 4aca0aab-3091-9245-ac35-efe868da9974 Ancestors: HelpSystem-Core-kfr.59 Add search to HelpBrowser =============== Diff against HelpSystem-Core-kfr.59 =============== Item was changed: Object subclass: #HelpBrowser + instanceVariableNames: 'rootTopic window treeMorph contentMorph topicClass topicMethod topic result' - instanceVariableNames: 'rootTopic window treeMorph contentMorph topicClass topicMethod topic' classVariableNames: 'DefaultHelpBrowser' poolDictionaries: '' category: 'HelpSystem-Core-UI'! !HelpBrowser commentStamp: 'tbn 3/8/2010 09:33' prior: 0! A HelpBrowser is used to display a hierarchy of help topics and their contents. Instance Variables rootTopic: <HelpTopic> window: <StandardWindow> treeMorph: <PluggableTreeMorph> contentMorph: <Morph> rootTopic - xxxxx window - xxxxx treeMorph - xxxxx contentMorph - xxxxx ! Item was added: + ----- Method: HelpBrowser>>find (in category 'actions') ----- + find + "Prompt the user for a string to search for, and search the receiver from the current selection onward for it." + + | reply | + reply := UIManager default request: 'Find what? ' initialAnswer: ''. + reply size = 0 ifTrue: [ + ^ self]. + self findStringInHelpTopic: reply + ! Item was changed: ----- Method: HelpBrowser>>find: (in category 'actions') ----- find: aString ^SystemNavigation allMethodsSelect: [:method | method hasLiteralSuchThat: [:lit | (lit isString and: [lit isSymbol not]) and: + [lit includesSubstring: aString caseSensitive: false]]] + localTo: CustomHelp - [lit includesSubstring: aString caseSensitive: true]]] ! Item was added: + ----- Method: HelpBrowser>>findStringInHelpTopic: (in category 'actions') ----- + findStringInHelpTopic: aString + | list | + result := OrderedCollection new. + list := treeMorph scroller submorphs collect: [ :each | each complexContents]. + list do:[ : topic | self inSubtopic: topic find: aString ]. + self onItemClicked: result first. + ! Item was added: + ----- Method: HelpBrowser>>inSubtopic:find: (in category 'actions') ----- + inSubtopic: aTopic find: aString + ((aTopic asString includesSubString: aString) + or: [aTopic item contents asString includesSubString: aString]) + ifTrue: [result add: aTopic item]. + aTopic contents + do: [:sub | self inSubtopic: sub find: aString]! Item was changed: ----- Method: HelpBrowser>>initWindow (in category 'initialize-release') ----- initWindow window := SystemWindow labelled: 'Help Browser'. window model: self. "Tree" treeMorph := PluggableTreeMorph new. + treeMorph model: self; setSelectedSelector: #onItemClicked:; getMenuSelector: #codePaneMenu:shifted:. - treeMorph model: self; setSelectedSelector: #onItemClicked:. window addMorph: treeMorph frame: (0@0 corner: 0.3@1). "Text" contentMorph := self defaultViewerClass on: self text: nil accept: #accept: readSelection: nil menu: #codePaneMenu:shifted:. window addMorph: contentMorph frame: (0.3@0 corner: 1@1). ! Item was changed: ----- Method: HelpBrowser>>onItemClicked: (in category 'events') ----- onItemClicked: anItem | classList | anItem isNil ifTrue: [^contentMorph setText: rootTopic asHelpTopic contents]. contentMorph setText: anItem contents. topic := anItem. + classList := (self find: anItem contents) asOrderedCollection. - classList := self find: anItem contents. classList ifNotEmpty:[ topicClass := classList first actualClass theNonMetaClass. + topicMethod := classList first selector]. + ! - topicMethod := classList first selector]!

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Daily Commit Log
by commits＠source.squeak.org 02 Jul '14

02 Jul '14

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2014-July/007130.html Name: Morphic-dtl.728 Ancestors: Morphic-dtl.727 merge Morphic-kfr.725 (see treated inbox) Name: Morphic-kfr.725 Ancestors: Morphic-kfr.724 Add two missed changes for mouse sensitive keyboard focus preference control. ============================================= http://lists.squeakfoundation.org/pipermail/packages/2014-July/007131.html Name: Morphic-kfr.729 Ancestors: Morphic-dtl.728 MenuMorph example was not working. Fixed =============================================

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Re: [squeak-dev] The Inbox: Morphic-cmm.728.mcz
by Chris Muller 01 Jul '14

01 Jul '14

TSTTCPW but I think we should revisit #flash again because sometimes it's so fast I barely saw it. I'll try this unconditional flash for a few days, make sure it won't become, ahem, annoying, before trunking it.. ;-) On Mon, Jun 30, 2014 at 12:23 PM, <commits(a)source.squeak.org> wrote: > Chris Muller uploaded a new version of Morphic to project The Inbox: > http://source.squeak.org/inbox/Morphic-cmm.728.mcz > > ==================== Summary ==================== > > Name: Morphic-cmm.728 > Author: cmm > Time: 30 June 2014, 12:23:11.962 pm > UUID: 09c9997d-d2e2-4e71-9077-c768f21a0071 > Ancestors: Morphic-dtl.727 > > - If the Reuse Windows preference is set, and an existing window on the > desktop qualifies as reusable for a request, #flash it after activating it > to ensure the user's attention will be guided to its on-screen location. > > =============== Diff against Morphic-dtl.727 =============== > > Item was changed: > ----- Method: SystemWindow>>openInWorld:extent: (in category > 'open/close') ----- > openInWorld: aWorld extent: extent > "This msg and its callees result in the window being > activeOnlyOnTop" > ^ self anyOpenWindowLikeMe > ifEmpty: > [ self > position: (RealEstateAgent > initialFrameFor: self initialExtent: extent world: aWorld) topLeft ; > extent: extent. > self openAsIsIn: aWorld ] > ifNotEmptyDo: > [ : windows | > windows anyOne > expand ; > activate ; > + postAcceptBrowseFor: self ; > + flash ]! > - postAcceptBrowseFor: self ]! > > >

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