Squeak-dev January 2004

squeak-dev@lists.squeakfoundation.org

156 participants
396 discussions

How to use GOODS? (was: Re: GOODS commit performance)
by Vaidas Didzbalis 06 Jan '04

06 Jan '04

Avi, >>/ db := KKDatabase onHost: '192.168.0.111' port: 6100./ >>/ root := db root./ >>/ nt _ root at: #NumbersTable ./ >>/ "lookup speed"/ >>/ [element _ nt at: 777777] timeToRun <8061>./ > Ok, that's interesting. The problem, I think, is that you're doing these > tests with a single massive object. The granularity of the database >protocol is single objects, so the first time you touch that large array, > the whole thing has to be brought in (not all the LargeIntegers, but the > whole Array), and as you're demonstrating that's quite slow. LargeCollections not installs onto 3.6. I got used to work with relational tables; how data shall be organized in goods? For example: I have million agreements and two million sales contacts. Semantically, information about Agreements is on the same level that information about Sales Contacts are and they have many_to_many relation. I fought, I need organize like root := db root. root at: #Contracts put: aContracts. root at: #SalesContacts put: aSalesContacts. then, if new user wants to work with contract #123, database shall allow find it quickly, "check out" for change somehow; user will change contract information in local image and commit changes back to database. All transaction shall be possible in a fraction of a second I think. so, how to use GOODS + Squeak? If such combination not allows to work with data of 5GB, than ok, I'm looking in wrong direction. Regards, Vaidas

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trigger between two windows
by ye juan 06 Jan '04

06 Jan '04

Hi, Who knows this situation: When a query window is executed, another window opens and the latter window displays the results the former query window generate. How the two windows can transmit the arguments? If any one has similar demo, please send to me. Thanks a lot! Regards, Lulu __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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[BUG][RB] walkback on browsing refs to class instance variable
by ned＠squeakland.org 06 Jan '04

06 Jan '04

I tried to do "instance variables/references..." and then selected the name of a class instance variable. When I went to look at the resulting browser, I got a walkback... 5 January 2004 9:13:55 pm VM: unix - a SmalltalkImage Image: Squeak3.7alpha [latest update: #5623] SystemDictionary(Object)>>error: Receiver: a SystemDictionary(lots of globals) Arguments and temporary variables: aString: 'key not found' Receiver's instance variables: tally: 2158 array: #(nil nil #BasicLintRule->BasicLintRule #ExternalStructure #SMInstaller->SMInstaller #Player61->Player6...etc... cachedClassNames: a SortedCollection(#ADPCMCodec #AGenieIntroduction #AIFFFileR...etc... SystemDictionary(Dictionary)>>errorKeyNotFound Receiver: a SystemDictionary(lots of globals) Arguments and temporary variables: Receiver's instance variables: tally: 2158 array: #(nil nil #BasicLintRule->BasicLintRule #ExternalStructure #SMInstaller->SMInstaller #Player61->Player6...etc... cachedClassNames: a SortedCollection(#ADPCMCodec #AGenieIntroduction #AIFFFileR...etc... [] in SystemDictionary(Dictionary)>>at: {[self errorKeyNotFound]} Arguments and temporary variables: key: 'NCBasicShapeMorph class' SystemDictionary(Dictionary)>>at:ifAbsent: Receiver: a SystemDictionary(lots of globals) Arguments and temporary variables: key: 'NCBasicShapeMorph class' aBlock: [] in SystemDictionary(Dictionary)>>at: {[self errorKeyNotFound]} assoc: nil Receiver's instance variables: tally: 2158 array: #(nil nil #BasicLintRule->BasicLintRule #ExternalStructure #SMInstaller->SMInstaller #Player61->Player6...etc... cachedClassNames: a SortedCollection(#ADPCMCodec #AGenieIntroduction #AIFFFileR...etc... --- The full stack --- SystemDictionary(Object)>>error: SystemDictionary(Dictionary)>>errorKeyNotFound [] in SystemDictionary(Dictionary)>>at: {[self errorKeyNotFound]} SystemDictionary(Dictionary)>>at:ifAbsent: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SystemDictionary(Dictionary)>>at: VariableEnvironmentBrowser(SelectorEnvironmentBrowser)>>selectedClass VariableEnvironmentBrowser>>messageList PluggableListMorph>>getList PluggableListMorph>>verifyContents [] in VariableEnvironmentBrowser(Object)>>updateListsAndCodeIn: {[:aPane | aPane verifyContents]} Array(SequenceableCollection)>>do: VariableEnvironmentBrowser(Object)>>updateListsAndCodeIn: VariableEnvironmentBrowser(CodeHolder)>>updateListsAndCodeIn: VariableEnvironmentBrowser(CodeHolder)>>stepIn: VariableEnvironmentBrowser(Object)>>stepAt:in: SystemWindow>>stepAt: StepMessage(MorphicAlarm)>>value: WorldState>>runLocalStepMethodsIn: WorldState>>runStepMethodsIn: NCWorldMorph(PasteUpMorph)>>runStepMethods WorldState>>doOneCycleNowFor: WorldState>>doOneCycleFor: NCWorldMorph(PasteUpMorph)>>doOneCycle [] in Project class>>spawnNewProcess {[[World doOneCycle. Processor yield. false] whileFalse. nil]} [] in BlockContext>>newProcess {[self value. Processor terminateActive]}

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[ENH] CompressedSources-di ( updated for KCP )
by marcus＠ira.uka.de 06 Jan '04

06 Jan '04

from preamble: "Change Set: CompressedSources Date: 20 November 2003 Author: Dan Ingalls md: fixed for KCP (to call some methods that where moved to SmalltalkImage). Changes for Version 1.1: Fixed a bug in #next, and added #fileID which is needed by OSProcess. This changeSet defines CompressedSourceStream which writes files as a series of GZipped segments that can be written and read sequentially like regular source files, and yet remain compressed by about a factor of four on the disk. Useful for developing with full sources on, eg, PDAs or Squeak PCs with limited file space available. Full sources for Squeak 3.6 fit in 3.5MB. It also defines Smalltalk compressSources, a method that will write a copy of the sources file in this format, with the extension 'stc' in place of 'sources'. Finally, it modifies the openSources:forImage: method so that it will look first for such a compressed copy, and open it if found."!

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[BUG] ClassBuilder cannot change class to variable subclass
by Boris Gaertner 06 Jan '04

06 Jan '04

This bug report is for Squeak 3.7 alpha latest update: 5623 When you create a subclass, you cannot change it later into a variable subclass. To see what goes wrong, please try this: 1. Open a class browser and select class Time. 2. Replace the class name 'Time' with 'TestClass' to create a subclass of Magnitude. Select 'accept' from the view menu to create the subclass. 3. Replace the 'subclass:' with 'variableSubclass:' and 'accept' again to change the just created subclass into a variable subclass. This should be possible because 'TestClass' has no subclasses at all (subclasses impose restrictions to the possible type of a class) and because Magnitude is a fixed-sized class. You will get a error notifier saying: 'TestClass cannot be compiled'. The problem is, as far as I can see, in the method ClassBuilder>>validateSubclassFormat:from: forSuper:extra: Here we have a check that reads: oldClass withAllSubclassesDo: [:sub | <omission> "If we get this far, check whether the immediate subclasses of oldClass can keep its layout." (newType ~~ #normal) ifTrue: [ self validateSubclass: sub canKeepLayoutFrom: oldClass forSubclassFormat: newType ] ]. The troublemaker is the "withAllSubclassesDo:". This method answers a collection that contains *the receiver class* and all its subclasses. Therefore, for one evaluation of 'self validateSubclass: ...' the identity sub == oldClass holds, and this is clearly not intended. For the test, we need a collection that contains only the subclasses of the receiver class, but not the receiver class itself. Such a collection is obtained with method 'allSubclassesDo:'. Attached you find a proposal for a fix. I think that it will not cause problems elsewhere but your advice is very welcome. Greetings, Boris

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[ENH] [Babel] SEM-Babel-dgd
by diegogomezdeck＠consultar.com 05 Jan '04

05 Jan '04

"Change Set: SEM-Babel-dgd Date: 5 January 2004 Author: Diego Gomez Deck <DiegoGomezDeck(a)ConsultAr.com> - More #translated sends, this time in ScriptEditorMorph "!

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Re: GOODS commit performance
by Vaidas Didzbalis 05 Jan '04

05 Jan '04

Hi Avi, >Try grabbing a new connection right after your large commit, and you should see much better numbers. Ok, after commit, opened new workspace and measured lookup speed. It takes 8 sec. How quickly get little piece of information, change it, and submit changes? db := KKDatabase onHost: '192.168.0.111' port: 6100. root := db root. nt _ root at: #NumbersTable . "lookup speed" [element _ nt at: 777777] timeToRun <8061>. BTW, how to reply to a message in this newsgroup, to post new, I send email to squeak-dev(a)lists.squeakfoundation.org, but what to do when I want to reply? thanks, Vaidas

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Re: Project saving & Magma
by Chris Muller 05 Jan '04

05 Jan '04

> I installed MAGMA to test how it worked. After doing so, everytime I start > squeak, a debug window shows up which says: > "Message Not Understood: Undefinded Object >> isOpen" It sounds like you saved the image with the repository open, which is fine, except then it was deleted from your filesystem. When the image restarted, it cannot reopen.. Send your stack trace and I can confirm exactly what happened. Regards, Chris

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List of pending items to review and finalize
by ducasse 05 Jan '04

05 Jan '04

Hi all I spent some time browsing and clean the pending items to get harvested. I think that this is important to finish some of the pending items under review: Can you please help to get rid of the following items: review them tell us your point of view - [BUG] CompiledMethod>>sourceClass (was: RE: [BUG] "debug it" not working) - Chronology changes Brent tom koening is doing a really good job at testing your package. Could you check the problems he found? - [ENH] Use of EndOfStream (sm) - [BUG][FIX]Saving snapshot to other directories Tim did you take into account the remark of Barry ([BUG][FIX]Saving snapshot to other directories ( [et] Fails on Windows if the new directory does not exist ) - [BUG][FIX]fileDirectory>pathParts users tidied - [BUG][FIX] CondenseSources uses wrong file name [sm] Boris could check if your fix is still necessary with the changes that tim did recently? And resubmit a new fix if necessary this would be good to clean this. - [BUG][FIX][TEST] SemaphoreWaitAndWaitTimeoutFix-jf - [ENH] LargeLists Note that it would be important to categorize and help fixing some of the pending [BUG] items as the list is getting longer and longer. stef

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RE: bug in delay?
by marcelo Cortez 05 Jan '04

05 Jan '04

Hi John >Mmm, I seem to recall Dan Ingalls, Bill Shauck, Samuel S. Shuster and I >were in there a few years back to >prove that the clock roll over logic had a bug where it wouldn't reset >the resumption time correctly in certain cases. Leaving >Dan's weather station software hung. >Assuming we are talking about SuspendedDelays which is created as: >SuspendedDelays _ >SortedCollection sortBlock: >[:d1 :d2 | d1 resumptionTime <= d2 resumptionTime]. >I would suggest you look at all users of SuspendedDelays in your image >and confirm that it's protected by >AccessProtect. In a quick look before adequate coffee I don't see why >it's broken if I assume something is altering >SuspendedDelays as the add: logic is running. You might need to look >at callers of certain methods to find the wrapping >critical: block. ** here is where the stack trace show the error this colaboration occurs into AccesProtect critical Delay>>schedule schedule "Private! Schedule this Delay, but return immediately rather than waiting. The receiver's semaphore will be signalled when its delay duration has elapsed." beingWaitedOn ifTrue: [self error: 'This Delay has already been scheduled.']. AccessProtect critical: [ beingWaitedOn _ true. resumptionTime _ Time millisecondClockValue + delayDuration. ActiveDelay == nil ifTrue: [self activate] ifFalse: [ resumptionTime < ActiveDelay resumptionTime ifTrue: [ SuspendedDelays add: ActiveDelay. self activate] ifFalse: [SuspendedDelays add: self (** HERE FIRE ERROR ) ]]]. Best regards MDC --------------------------------- ¿Buscás un auto? Encontralo en Yahoo! Autos ¡Más de 4000 clasificados todos los días! Usados - 0 km - Vendé el tuyo

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