Squeak-dev July 2002

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205 participants
393 discussions

(no subject)
by Stephen Pair 01 Jul '02

01 Jul '02

Don't know about ANSI, but I would expect the process to be terminated before "Transcript show: 'done'" gets executed, and any ensure (or ifCurtailed) blocks above this method to be executed (probably in the process that calls #terminate). Looking at BlockContext>>ensure:, it looks like your bug might be fixed by niling out aBlock before executing it (which would require that you access thisContext). Or, perhaps a better way is to add a new <primitive: 81> method to BlockContext that simply does nothing if the primitive fails...call it BlockContext>>#valueForUnwind, then make ContextPart>>unwindTo: use that method. If you fix that bug, then it looks to me like it would do the expected thing. - Stephen > -----Original Message----- > From: squeak-dev-admin(a)lists.squeakfoundation.org > [mailto:squeak-dev-admin@lists.squeakfoundation.org] On > Behalf Of Andreas Raab > Sent: Sunday, June 30, 2002 2:02 PM > To: squeak-dev(a)lists.squeakfoundation.org > Subject: unwind behavior > > > Hi, > > Just a question: Does anyone know what the *expected* > behavior for terminating a process is where an unwind block > is currently under evaluation?! E.g., a simple test case is: > > process := [[3+4] ensure:[ > Transcript cr; show: 'Unwinding...'. > Processor activeProcess suspend. > Transcript show:'done'. > ]] fork. > (Delay forMilliseconds: 100) wait. > process terminate. > > Right now this raises an error in Squeak (attempting to > evaluate a block which is already evaluated) so this is > clearly wrong. But what *is* the expected behavior in this > case?! Does somebody know what ANSI has to say about this problem? > > Cheers, > - Andreas > > >

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What is this error?
by Jerome Chan 01 Jul '02

01 Jul '02

I keep getting a walkback after saving and quitting. Here is the log file. I'm running 3.2 #4904 on a Windows 3.2.2 May 26 2002 release. Error: Attempt to evaluate a block that is already being evaluated. 30 June 2002 6:10 pm VM: Win32 - Squeak3.2gamma of 12 January 2002 [latest update: #4879] Image: Squeak3.2gamma [latest update: #4904] BlockContext(Object)>>error: Receiver: [] in Semaphore>>critical: Arguments and temporary variables: t1: 'Attempt to evaluate a block that is already being evaluated.' Receiver's instance variables: sender: BlockContext>>ensure: pc: 37 stackp: 1 nargs: 0 startpc: 35 home: Semaphore>>critical: BlockContext>>valueWithArguments: Receiver: [] in Semaphore>>critical: Arguments and temporary variables: t1: #() Receiver's instance variables: sender: BlockContext>>ensure: pc: 37 stackp: 1 nargs: 0 startpc: 35 home: Semaphore>>critical: BlockContext>>value Receiver: [] in Semaphore>>critical: Arguments and temporary variables: Receiver's instance variables: sender: BlockContext>>ensure: pc: 37 stackp: 1 nargs: 0 startpc: 35 home: Semaphore>>critical: BlockContext(ContextPart)>>unwindTo: Receiver: [] in Semaphore>>critical: Arguments and temporary variables: t1: nil t2: BlockContext>>ensure: t3: nil t4: [] in Semaphore>>critical: Receiver's instance variables: sender: BlockContext>>ensure: pc: 37 stackp: 1 nargs: 0 startpc: 35 home: Semaphore>>critical: --- The rest of the stack --- Process>>terminate ProcessorScheduler class>>startUp ProcessorScheduler class(Behavior)>>startUp: [] in SystemDictionary>>send:toClassesNamedIn:with: OrderedCollection>>do: SystemDictionary>>send:toClassesNamedIn:with: SystemDictionary>>processStartUpList: SystemDictionary>>snapshot:andQuit:embedded: SystemDictionary>>snapshot:andQuit: TheWorldMenu>>saveAndQuit TheWorldMenu>>doMenuItem:with: [] in MenuItemMorph>>invokeWithEvent: BlockContext>>ensure: CursorWithMask(Cursor)>>showWhile: MenuItemMorph>>invokeWithEvent: MenuItemMorph>>mouseUp: MenuItemMorph>>handleMouseUp: MouseButtonEvent>>sentTo: MenuItemMorph(Morph)>>handleEvent: MorphicEventDispatcher>>dispatchDefault:with: MorphicEventDispatcher>>dispatchEvent:with: MenuItemMorph(Morph)>>processEvent:using: MorphicEventDispatcher>>dispatchDefault:with: MorphicEventDispatcher>>dispatchEvent:with: MenuMorph(Morph)>>processEvent:using: MenuMorph(Morph)>>processEvent: MenuMorph>>handleFocusEvent: [] in HandMorph>>sendFocusEvent:to:clear: PasteUpMorph>>becomeActiveDuring: HandMorph>>sendFocusEvent:to:clear: HandMorph>>sendEvent:focus:clear: HandMorph>>sendMouseEvent: HandMorph>>handleEvent: HandMorph>>processEvents [] in WorldState>>doOneCycleNowFor: Array(SequenceableCollection)>>do: WorldState>>handsDo: WorldState>>doOneCycleNowFor: WorldState>>doOneCycleFor: PasteUpMorph>>doOneCycle [] in Project class>>spawnNewProcess [] in BlockContext>>newProcess

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Color w/o pretty printing
by Jason Dufair 01 Jul '02

01 Jul '02

Hi all - Is there a way to get color syntax highlighting in the browser(s) w/o automatic pretty printing? Thanks! -- Jason Dufair - jase(a)dufair.org http://www.dufair.org/ "How are you gentlemen!! All your base are belong to us." -- Zero Wing

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Re: All clear (was: URGENT WARNING -- Don't snapshot! (was: "What is this error?"))
by Mike Rutenberg 01 Jul '02

01 Jul '02

The european updates server does not have the fix yet. If you are fetching updates, for now it is best to do it from the north american servers ("Squeak Public Updates"). Mike

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3.2, Help wanted. Now we're getting somewhere.
by John Voiklis 01 Jul '02

01 Jul '02

>What kind of Morphs do you want to document? All of them? Tools=20 >(browsers, debuggers, etc)? Widgets (Pluggable*Morph, TextMorph,=20 >etc.)? Basic (RectangleMorph, PolygonMorph)? It depends how responsive the authors/experts are. Having the entire Morph Catalog (if not more) documented should be the goal before we iterate to 3.4 (to set an arbitrary deadline). It would be nice to have the majority of Tools, Scripting, Collaborative, Presentation, Multimedia, Navigation, and the less obvious morphs in Graphics and Text ready to publish some time before the US Thanksgiving holiday (the 21st or 28th of November...after that much of the world goes into holiday mode); again it depends on community response. The sooner people write the first drafts, the sooner I can begin testing and editing. I do have to warn everyone that I am going off the grid for the month of August. Ultimately, the goal is document everything no matter how mundane or how official/unofficial. Best--John

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Help: how can I avoid this error?
by marbusse＠t-online.de 01 Jul '02

01 Jul '02

Hi! After Smalltalk>>majorShrink, I'm trying to fileIn Base64MimeConverter. But I get an error: turnTypeC:Argument name expected ->'int *'. ^objBuffer + bmFill + GBColormapOffset How can I avoid this (fileIn something or not squeeze it out of the image)? Thank you, Markus

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Black Screen
by Derek Brans 01 Jul '02

01 Jul '02

Hi all, What does it mean when my image starts up with a black screen and nothing happens (I think I had Seaside and Comanche running last time I saved and quit Squeak) If my image is shot, I need to learn about the changes file, right? I've had difficulty finding online reading about the changes file and how to use it. Can anyone recommend some url's? Thanks, Derek Phasecraft: Smarter Web Development. Experts in web design, databases, flash design, multi-lingual sites, branding, marketing and web hosting. phone: 604-874-6463 mailto:info@phasecraft.com http://www.phasecraft.com

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[FIX] - WatchMorph
by Magistrello Alejandro (SFA) 01 Jul '02

01 Jul '02

The WatchMorph class comment says: (WatchMorph fontName: 'ComicPlain') openInWorld " transparent " but it raises 'UndefinedObject doesNotUnderstand: asColor', the change of nil for Color transparent corrects the error and if you do: (WatchMorph fontName: 'ComicBold' bgColor: Color white centerColor: Color black) openInWorld after this you'll never see a black center because the drawOn: method change the centerColor every time. This correct this. <<WatchMorph-fix-asm.1.cs>> Alejandro

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Any Brazilians around?
by Leo Burd 01 Jul '02

01 Jul '02

- Squeakers, Is there any other Brazilian in the Squeak list? If so, please contact me and let me know what you are doing, ok? BTW, congratulations for the Penta Championship!! Cheers, Leo

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Re: 3.2, Help wanted.
by Bruce ONeel 01 Jul '02

01 Jul '02

Thanks to both of you. The zip file is now in the same place as the .sit one. cheers bruce Tommy Thorn <tt1729(a)yahoo.com> wrote: > --- Dan Ingalls <Dan(a)SqueakLand.org> wrote: > .... > > I have now done most of the work (I hope!), and have > > placed image and changes (now about half their > > former size) in > > > > Squeak3.2gamma2.sit > > > > in the 3.2 folder at > > > > ftp://st.cs.uiuc.edu/Smalltalk/Squeak/ > > > > I apologize for using a stuffit archive; perhaps > > someone can produce an equivalent zip file for > > Windoze folks. > > http://www.meko.dk/Squeak3.2gamma2-4889.zip > > Cheers, > > Tommy > > > __________________________________________________ > Do You Yahoo!? > Yahoo! - Official partner of 2002 FIFA World Cup > http://fifaworldcup.yahoo.com

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