May 2012 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Questionn
by Marcus Denker May 4, 2012

May 4, 2012

On May 4, 2012, at 9:44 AM, Francisco Garau wrote: > On 2 May 2012 18:47, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > First class instance variables will bring a lot to the system: > foundation for a lot of innovation > - relationships support > - meta description. > - bitfields description > ... > > > I like the idea -- you could even have a BroadcasterSlot that whenever it's changed send notifications (although this might not be necessary with the Announcement framework, I haven't looked into that). > > But there are a couple of points that I don't understand: > > 1) Slots and Layouts are descriptions of Objects and Classes and, as such, they are reflection facilities. Will this go into the "minimal" kernel image that you are trying to bootstrap? yes, because the ClassBuilder will use the layout descriptions. And because the system itself might use them. > (I think they should go to a "reflection" module on top of the kernel) > In the futuer, yes. But that is hard. In theory, you can think about a reflection-less system where reflection can be added later by loading something. But this is a hard problem in itself. Nik did some research experiments in that direction: http://rmod.lille.inria.fr/web/pier/publications/bib?&query=Papo11a In the end we want to go there, but for the bootstrap this is not the first goal. (ie, we will do a boostrap that has reflection first). > 2) Let's say you have a subclass of point with typed slots called FloatPoint with a couple of getter/setters. Would the generated bytecodes of the setter by the same as for the same method in the superclass? > yes. (if I understand you question correctly) Marcus -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] Which home for a class?
by James Ladd May 4, 2012

May 4, 2012

Please adopt a lonely Class that needs a home, and help Redline Smalltalk get to V1.0 http://www.redline.st/blog/2011/12/22/adopt-a-class.html

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[Pharo-project] OSProcess: can't #chDir: '/' on Linux
by Damien Cassou May 4, 2012

May 4, 2012

Hi, OSProcess thisOSProcess chDir: '/'. always returns a /: Resource temporarily unavailable I'm using Pharo 2.0 with #bleedingEdge OSProcess. -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry

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[Pharo-project] OSProcess error in 1.3
by Sean P. DeNigris May 4, 2012

May 4, 2012

With the latest OSProcess package from SqS, when I save the image, I get: 2 May 2012 1:20:30 am VM: Mac OS - intel - 1073 - Croquet Closure Cog VM [CoInterpreter VMMaker-oscog-EstebanLorenzano.155] 21.0 Image: Pharo1.3 [Latest update: #13320] UndefinedObject(Object)>>doesNotUnderstand: #wait Receiver: nil Arguments and temporary variables: aMessage: wait exception: MessageNotUnderstood: receiver of "wait" is nil resumeValue: nil Receiver's instance variables: nil [[event wait. processSynchronizationDelay wait. self changed: #childProcessStatus] repeat. nil] in UnixOSProcessAccessor>>grimReaperProcess Receiver: a UnixOSProcessAccessor on pid 22740 Arguments and temporary variables: event: nil processSynchronizationDelay: a Delay(20 msecs) Receiver's instance variables: dependents: a DependentsArray(a UnixProcess with pid 22740) sessionIdentifier: #[104 195 160 79] canObtainSessionIdentifierFromPlugin: true hasTestEof: nil grimReaper: a Process in MorphicUIManager>>openDebuggerOn:context:label:content...etc... sigChldSemaphore: nil Weird... -- View this message in context: http://forum.world.st/OSProcess-error-in-1-3-tp4602389.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Issue loading NB
by Guido Chari May 3, 2012

May 3, 2012

NativeBoost installer is not loading ConfigurationOfNativeBoost. So the command: 'NBInstaller install' is not working. Cheers, Guido.

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[Pharo-project] Pharo 2.0: Just need a recompileAll or a real problem in background?
by Mariano Martinez Peck May 3, 2012

May 3, 2012

(Smalltalk globals associationAt: #ScriptLoader) == ((SmalltalkImage >> #shrinkToCore) literalAt: 4) gives false when it should be true. If I do a Compiler recompileAll it gets fixed. So, my question is, is that normal? how could that happen? is there any real problem behind? anyway, can we do a recompileAll for the moment? thanks! -- Mariano http://marianopeck.wordpress.com

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[Pharo-project] [update 2.0] #20039
by Marcus Denker May 3, 2012

May 3, 2012

20039 ----- Issue 5779: remove testDuplicateInstanceVariableError http://code.google.com/p/pharo/issues/detail?id=5779 Issue 5767: [BUG]: Nautilus has re-bound the explore shortcut http://code.google.com/p/pharo/issues/detail?id=5767 Issue 5768: [ENH]: Nautilus - Debug test http://code.google.com/p/pharo/issues/detail?id=5768 Issue 5724: integrate Spotlight in Pharo 2.0 http://code.google.com/p/pharo/issues/detail?id=5724 -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] multiple pharo images
by Francisco Garau May 3, 2012

May 3, 2012

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May 3, 2012

Begin forwarded message: > From: pharo-project-owner(a)lists.gforge.inria.fr > Subject: Fwd: [squeak-dev] The Trunk: Kernel-eem.684.mcz > Date: April 30, 2012 6:48:24 PM GMT+02:00 > To: stephane.ducasse(a)gmail.com > > You are not allowed to post to this mailing list, and your message has > been automatically rejected. If you think that your messages are > being rejected in error, contact the mailing list owner at > pharo-project-owner(a)lists.gforge.inria.fr. > > > From: stephane ducasse <stephane.ducasse(a)gmail.com> > Subject: Fwd: [squeak-dev] The Trunk: Kernel-eem.684.mcz > Date: April 30, 2012 6:46:40 PM GMT+02:00 > To: Pharo Development <Pharo-project(a)lists.gforge.inria.fr> > > > > > Begin forwarded message: > >> From: commits(a)source.squeak.org >> Subject: [squeak-dev] The Trunk: Kernel-eem.684.mcz >> Date: April 26, 2012 6:07:56 PM GMT+02:00 >> To: squeak-dev(a)lists.squeakfoundation.org, packages(a)lists.squeakfoundation.org >> Reply-To: squeak-dev(a)lists.squeakfoundation.org >> >> Eliot Miranda uploaded a new version of Kernel to project The Trunk: >> http://source.squeak.org/trunk/Kernel-eem.684.mcz >> >> ==================== Summary ==================== >> >> Name: Kernel-eem.684 >> Author: eem >> Time: 26 April 2012, 11:07:37.737 am >> UUID: e838a325-27ec-4a62-a907-d4059451a046 >> Ancestors: Kernel-nice.683 >> >> Implement endPC numArgs and numTemps for closures >> and contexts (both block and method activations). >> Provide CompiledMethod>abstractBytecodeMessagesDo: >> et al. >> Implement BlockClosure>isClean to identify self-contained blocks. >> >> =============== Diff against Kernel-nice.683 =============== >> >> Item was added: >> + ----- Method: BlockClosure>>abstractBytecodeMessagesDo: (in category 'scanning') ----- >> + abstractBytecodeMessagesDo: aBlock >> + "Evaluate aBlock with the sequence of abstract bytecodes in the receiver." >> + self method >> + abstractBytecodeMessagesFrom: startpc >> + to: self endPC >> + do: aBlock >> + >> + "| msgs | >> + msgs := OrderedCollection new. >> + (SortedCollection sortBlock: [:a :b| a compare: b caseSensitive: false]) sortBlock >> + abstractBytecodeMessagesDo: [:msg| msgs add: msg selector]. >> + msgs"! >> >> Item was added: >> + ----- Method: BlockClosure>>blockCreationBytecodeMessage (in category 'scanning') ----- >> + blockCreationBytecodeMessage >> + "Answer the abstract bytecode message that created the receiver." >> + | blockCreationBytecodeSize | >> + ^self method abstractBytecodeMessageAt: startpc - (blockCreationBytecodeSize := 4) >> + >> + "(SortedCollection sortBlock: [:a :b| a compare: b caseSensitive: false]) sortBlock blockCreationBytecodeMessage"! >> >> Item was added: >> + ----- Method: BlockClosure>>endPC (in category 'accessing') ----- >> + endPC >> + ^self blockCreationBytecodeMessage arguments last + startpc - 1! >> >> Item was changed: >> ----- Method: BlockClosure>>hasMethodReturn (in category 'testing') ----- >> hasMethodReturn >> "Answer whether the receiver has a method-return ('^') in its code." >> + | scanner endpc | >> + scanner := InstructionStream new method: outerContext method pc: startpc. >> + endpc := self endPC. >> + scanner scanFor: [:byte | (byte between: 120 and: 124) or: [scanner pc > endpc]]. >> + ^scanner pc <= endpc! >> - | myMethod scanner preceedingBytecodeMessage end | >> - "Determine end of block from the instruction preceding it. >> - Find the instruction by using an MNU handler to capture >> - the instruction message sent by the scanner." >> - myMethod := outerContext method. >> - scanner := InstructionStream new method: myMethod pc: myMethod initialPC. >> - [scanner pc < startpc] whileTrue: >> - [[scanner interpretNextInstructionFor: nil] >> - on: MessageNotUnderstood >> - do: [:ex| preceedingBytecodeMessage := ex message]]. >> - end := preceedingBytecodeMessage arguments last + startpc - 1. >> - scanner method: myMethod pc: startpc. >> - scanner scanFor: [:byte | (byte between: 120 and: 124) or: [scanner pc > end]]. >> - ^scanner pc <= end! >> >> Item was added: >> + ----- Method: BlockClosure>>isClean (in category 'testing') ----- >> + isClean >> + "Answer if the receiver does not close-over any variables other than globals, and does >> + not ^-return (does not close over the home context). Clean blocks are amenable to >> + being created at compile-time." >> + self numCopiedValues > 0 ifTrue: >> + [^false]. >> + self abstractBytecodeMessagesDo: >> + [:msg| >> + (#( pushReceiver >> + pushReceiverVariable: popIntoReceiverVariable: storeIntoReceiverVariable: >> + methodReturnConstant: methodReturnReceiver methodReturnTop) >> + includes: msg selector) ifTrue: >> + [^false]]. >> + ^true >> + >> + "clean:" >> + "[] isClean" >> + "[:a :b| a < b] isClean" >> + "unclean" >> + "[^nil] isClean" >> + "[self class] isClean" >> + "| v | v := 0. >> + [v class] isClean"! >> >> Item was added: >> + ----- Method: BlockClosure>>numTemps (in category 'accessing') ----- >> + numTemps >> + "Answer the number of temporaries for the receiver; this includes >> + the number of arguments and the number of copied values." >> + | blockCreationBytecodeSize | >> + ^self numCopiedValues >> + + self numArgs >> + + (BlockLocalTempCounter >> + tempCountForBlockAt: startpc - (blockCreationBytecodeSize := 4) >> + in: self method)! >> >> Item was added: >> + ----- Method: CompiledMethod>>abstractBytecodeMessageAt: (in category 'scanning') ----- >> + abstractBytecodeMessageAt: pc >> + "Answer the abstract bytecode message at pc in the receiver." >> + ^[(InstructionStream new method: self pc: pc) interpretNextInstructionFor: nil] >> + on: MessageNotUnderstood >> + do: [:ex| ex message]! >> >> Item was added: >> + ----- Method: CompiledMethod>>abstractBytecodeMessagesDo: (in category 'scanning') ----- >> + abstractBytecodeMessagesDo: aBlock >> + "Evaluate aBlock with the sequence of abstract bytecodes in the receiver" >> + self abstractBytecodeMessagesFrom: self initialPC >> + to: self endPC >> + do: aBlock >> + >> + "| msgs | >> + msgs := OrderedCollection new. >> + CompiledMethod >> #abstractBytecodeMessagesFrom:to: abstractBytecodeMessagesDo: >> + [:msg| msgs add: msg selector]. >> + msgs"! >> >> Item was added: >> + ----- Method: CompiledMethod>>abstractBytecodeMessagesFrom:to:do: (in category 'scanning') ----- >> + abstractBytecodeMessagesFrom: startpc to: endpc do: aBlock >> + "Evaluate aBlock with the sequence of abstract bytecodes from startpc through endpc in the receiver" >> + | scanner | >> + scanner := InstructionStream new method: self pc: startpc. >> + [scanner pc <= endpc] whileTrue: >> + [[scanner interpretNextInstructionFor: nil] >> + on: MessageNotUnderstood >> + do: [:ex| aBlock value: ex message]] >> + >> + "| m msgs | >> + msgs := OrderedCollection new. >> + (m := CompiledMethod >> #abstractBytecodeMessagesFrom:to:) >> + abstractBytecodeMessagesFrom: m initialPC >> + to: m endPC >> + do: [:msg| msgs add: msg selector]. >> + msgs"! >> >> Item was added: >> + ----- Method: MethodContext>>endPC (in category 'private') ----- >> + endPC >> + ^closureOrNil >> + ifNil: [self method endPC] >> + ifNotNil: [closureOrNil endPC]! >> >> Item was added: >> + ----- Method: MethodContext>>numArgs (in category 'accessing') ----- >> + numArgs >> + "Answer the number of arguments for this activation." >> + ^closureOrNil >> + ifNil: [method numArgs] >> + ifNotNil: [closureOrNil numArgs]! >> >> Item was added: >> + ----- Method: MethodContext>>numTemps (in category 'accessing') ----- >> + numTemps >> + "Answer the number of temporaries for this activation; this includes >> + the number of arguments, and for blocks, the number of copied values." >> + ^closureOrNil >> + ifNil: [method numTemps] >> + ifNotNil: [closureOrNil numTemps]! >> >> > > > >

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[Pharo-project] ZTimestamp
by Sven Van Caekenberghe May 3, 2012

May 3, 2012

Hi All, I don't like DateAndTime and/or TimeStamp a lot because it forces nanosecond precision and timezones on me, while in most cases I only want second precision and no timezones. Futhermore the class has some quirks that make it hard to understand. So last month I wrote my own, independent, more efficient ZTimestamp. As an experiment, I am releasing it like this: https://github.com/svenvc/ztimestamp I think Dale is really on to something with filetree, git and github. Check it out! Regards, Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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