Squeak-dev February 2004

squeak-dev@lists.squeakfoundation.org

175 participants
596 discussions

Re: How are Block Closures?
by Chris Muller 15 Apr '04

15 Apr '04

> I hope to find more time now, but I fear that it will be another month > or so till > I can put some real time into this again. Fantastic, thank you Marcus! I had asked about this a couple of years ago, and Tim Rowledge indicated that his 'New CompiledMethod' stuff was planned to be part of it. http://lists.squeakfoundation.org/pipermail/squeak-dev/2002-February/035684… I sincerely hope this is still this case as it breaks wide open two great things; easier serialization/materialization of CompiledMethods and, hopefully, faster reflection. Is the new CompiledMethod planned? Thanks..

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[ENH] Accufonts changeset candidate for 3.7alpha
by Doug Way 15 Apr '04

15 Apr '04

With the help of a bit of handy code from Ned, I've converted the Accufonts.sar file on SqueakMap with all of its bundled .sf2 font files into a single changeset which could be added to the update stream. The entire changeset is just over 100K, not too bad, although a little too large to post to this list, so I put it here: http://www.mindspring.com/~dway/smalltalk/InstallAccuFonts.8.cs.gz This is the candidate for inclusion in the 3.7alpha update stream. Note that the main point of the changeset is to remove the original Apple fonts (NewYork) from the image, so that the font clause in Squeak-L becomes irrelevant, allowing the possibility of making progress with sublicensing (or even re-licensing) Squeak. The replacement fonts look very similar so there shouldn't be much that's noticably changed. As a bonus, several extra bitmap fonts are thrown in. This also removes the ComicPlain/Bold bitmap fonts, which are not free font and were removed so that potential business users of Squeak have a "clean" image to work from font-wise. On the other hand, apparently there is some legal precedent recently that bitmap fonts are not copyrightable, so this may or may not really be an issue. Anyway, "Accujen" is a reasonable looking sans-serif replacement for the Comic fonts. This changeset does not remove the ComicSansMS TrueType font (yet), which probably should be removed, because outline fonts definitely are copyrightable, and this is not a free font either as far as I know. However, I was going to wait and possibly remove this one as part of incorporating the BitStream Vera TrueType fonts, so we have a bunch of replacement TT fonts before getting rid of this one. The "Atlanta" bitmap font, which someone donated to Squeak awhile back, remains. The Accufonts come with their own (very simple) license, included in the changeset preamble. This seems fine, fonts are a very different entity from source code, and it is not uncommon for software to provide a separate license for included fonts. There are still a couple of smallish issues with these fonts, but I wanted to get these in soon so that people can try them out, and we can fix/tweak things based on feedback from that. The problems I know of are: The character widths for some punctuation characters could use some adjusting... e.g. the Accuny period character is quite wide and looks funny IMHO. Also, some fonts such as Accuny09 and Accuny10 have the same size of 12, which can cause problems for some tools, such as Boris Gaertner's useful FontEditor tool. One odd last thing... I notice that the "Smalltalk garbageCollect" at the end of the postscript does not remove the old fonts from "StrikeFont allInstances", but doing a manual garbageCollect after filing in the changeset does. Maybe the ChangeSet object is somehow holding onto the fonts up 'til then, or something. No biggie I guess, we'll make sure garbage is collected sometime before 3.7 goes final. ;-) - Doug

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[FIX] AddAllFix-ac
by andrew＠beta4.com 07 Apr '04

07 Apr '04

from preamble: "Change Set: AddAllFix-ac Date: 6 August 2003 Author: Andrew Catton Fixed bug where: someCollection addAll: someCollection causes an infinite loop. - #addAll*: methods now use a copy of the parameter if it is the same as the receiver. - The old behavior was moved to #basicAddAll*: variants. - #basicAddAll: is used by SortedCollection>>copy to avoid an #addAll:->#copy->#addAll: infinite loop when adding a collection to itself. - Removed OrderedCollection>>addAll: as it didn't actually change the semantics inherited from Collection>>addAll: and would have required a further override on SortedCollection had it remained."!

4 5

Squeak listening to specific IP Addresses?
by Peter William Lount 03 Apr '04

03 Apr '04

Hi, Is it possible to configure Squeak to listen to specific IP Addresses and Ports, i.e. 1.2.3.4:8000, on a machine that supports multiple ip addresses? If so how? If not, how can we add this feature? A further example is running a Comanche squeak server on 1.2.3.4:80 and on 5.6.7.8:80. Two basic configurations interest me. 1. Restrict a squeak image to a specific ip address (or more than one specific address) from the set of addresses that are being homed on the server. 2. Enable squeak to listen to specific ipa:port pairs from the set of addresses that are being homed on the server. All the best, Peter William Lount, Smalltalk.org Senior Editor peter(a)smalltalk.org peter(a)activeinfo.ca

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[BUG] Hidden Information/HyperText, alt-6 in GeeMail
by David Faught 26 Mar '04

26 Mar '04

In the TextPlus area of a GeeMail morph, the alt-6 menu comes up, but does not work properly. Specifically, entering: A Link<http://www.whatever.com> selecting all that text, doing alt-6 (on Windows), and selecting "be a Web URL Link" from the menu gives the following result: A Link<http://www.whatever.com>[No hidden info] and no link is inserted. This is in a 3.5 image. __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com

2 1

[ENH] Faster BMP writing
by Yoshiki Ohshima 25 Mar '04

25 Mar '04

Hello, Lately, I'm generating thousands of BMP files. It seems that there was some attempt to make a primitive for it, but the one in the VMMaker doesn't seem to be complete and the primitive only handles depth=32 Forms, which doesn't serve my purpose because the BMP I'm interested in happens to be 8 bit. So, I did a little hack to speed up the BMP writing. With this changeset, writing a 720x480x8 Form to a byte array as BMP becomes 30 times faster. ----------------- f _ Form extent: 720@480 depth: 8. bytes _ ByteArray new: 500000. [100 timesRepeat: [ w _ WriteStream on: bytes. b _ BMPReadWriter on: w. b nextPutImage: f. ]] timeToRun. ----------------- This changeset factors out the depth=32 case. Presumably, it should make it easier to adapt the BMP writing primitive. -- Yoshiki

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RE: Fun article
by Ivan Tomek 21 Mar '04

21 Mar '04

Thanks, and my apologies for being so sensitive to this. Ivan > -----Original Message----- > From: Marcus Denker [mailto:marcus@ira.uka.de] > Sent: Friday, June 13, 2003 9:38 AM > To: The general-purpose Squeak developers list > Subject: Re: Fun article > > > On Fri, Jun 13, 2003 at 09:32:12AM -0300, Ivan Tomek wrote: > > Too bad they can't spell Smalltalk right. > > > Oh, horrors of all horrors. ;-) > > How could that happen? I just tried to fix it, and, in my local > PersonalWiki this is allready corrected. So I synced this > with the website. No change. Hmm. The problem seems to be MacOS: > the only Unix-Filesystem that is not case-sesitive. > I guess I fixed the typo as soon as I saved the first wrong version > (they are both dated the same), only the html-conversion scripts did > not write the new file (it was allready there...) > > http://www.ira.uka.de/~marcus/_The_Early_History_of_Smalltalk_.html > > Marcus > > > -- > Marcus Denker marcus(a)ira.uka.de -- Squeak! http://squeak.de > >

15 22

Debian packages updated
by Lex Spoon 20 Mar '04

20 Mar '04

I've updated the Debian packages that are on the uiuc ftp server. The VM now includes Ned's "floatbug" patch, so that it runs 3.7 images. Otherwise the packages are the same as before. To set up apt to use these packages, follow the direction on the swiki: "Debian" http://minnow.cc.gatech.edu/squeak/3616 -Lex

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About SimulatorInterpreter
by ducasse 16 Mar '04

16 Mar '04

Hi all for the demo of Squeak I'm preparing I would like to show the VM can be interprted. I did the following steps with alex and we are stuck: - took a 3.6 image - created a mvc project - saved the image named mvc36 - took a 3.6 image - executed (InterpreterSimulator new openOn: 'mvc36.image') test We did the same with the latest 3.7alpha 5623 - we load VMmaker from SqueakMap 3.6g2 and in both cases we got the following DNU What did we forget? Thanks in advance Stef and Alex 8 January 2004 5:31:50 pm VM: Mac OS - a SmalltalkImage Image: Squeak3.7alpha [latest update: #5623] Bitmap(Object)>>doesNotUnderstand: #copyGrownBy: Receiver: a Bitmap of length 2138980 Arguments and temporary variables: aMessage: copyGrownBy: 258436 Receiver's instance variables: a Bitmap of length 2138980 InterpreterSimulatorMSB(InterpreterSimulator)>>sqGrowMemory:By: Receiver: an InterpreterSimulatorMSB Arguments and temporary variables: oldLimit: 8555920 delta: 1033744 Receiver's instance variables: memory: a Bitmap of length 2138980 youngStart: 0 endOfMemory: 8056808 memoryLimit: 8555920 nilObj: 4 falseObj: 12 trueObj: 20 specialObjectsOop: 1940220 rootTable: #(0 0 0 nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... rootTableCount: 0 child: 2401690460 field: 8056608 parentField: 3 freeBlock: 8056804 lastHash: 18437 allocationCount: 0 lowSpaceThreshold: 0 signalLowSpace: false compStart: 7944744 compEnd: 8057936 fwdTableNext: 8056816 fwdTableLast: 8555912 remapBuffer: #(8056380 nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil)...etc... remapBufferCount: 0 allocationsBetweenGCs: 4000 tenuringThreshold: 2000 statFullGCs: 0 statFullGCMSecs: 0 statIncrGCs: 1 statIncrGCMSecs: 4 statTenures: 0 statRootTableOverflows: 0 freeContexts: 1 freeLargeContexts: 1 interruptCheckCounter: 872 totalObjectCount: 181605 shrinkThreshold: 8388608 growHeadroom: 4194304 headerTypeBytes: a CArrayAccessor on: #(8 4 0 0) youngStartLocal: 0 activeContext: 8056608 theHomeContext: 8056608 method: 3969776 receiver: 2061796 instructionPointer: 3969821 stackPointer: 8056648 localIP: 3969821 localSP: 8057488 localHomeContext: 8057448 localReturnContext: 8057448 localReturnValue: 307201 messageSelector: 4144 argumentCount: 1 newMethod: 3220880 currentBytecode: 205 successFlag: true primitiveIndex: 71 methodCache: #(370400 681696 3561864 101 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... atCache: #(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... lkupClass: 660584 reclaimableContextCount: 4 nextPollTick: 255637 nextWakeupTick: 0 lastTick: 255137 interruptKeycode: 2094 interruptPending: false semaphoresToSignalA: #(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... semaphoresUseBufferA: true semaphoresToSignalCountA: 0 semaphoresToSignalB: #(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... semaphoresToSignalCountB: 0 savedWindowSize: 34406785 fullScreenFlag: 0 deferDisplayUpdates: false pendingFinalizationSignals: 0 compilerInitialized: false compilerHooks: nil extraVMMemory: 0 newNativeMethod: 4 methodClass: 681448 receiverClass: 660584 interpreterVersion: nil obsoleteIndexedPrimitiveTable: a CArrayAccessor on: #(a CArrayAccessor on: #(nil nil nil) a CArrayAccessor on: #(nil nil nil) a CArrayAccesso...etc... obsoleteNamedPrimitiveTable: a CArrayAccessor on: #(#(#gePrimitiveMergeFillFrom...etc... interpreterProxy: an InterpreterSimulatorMSB showSurfaceFn: nil interruptCheckCounterFeedBackReset: 1000 interruptChecksEveryNms: 3 externalPrimitiveTable: a CArrayAccessor on: #(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... byteCount: 2268 sendCount: 1 traceOn: true myBitBlt: a BitBltSimulator displayForm: nil filesOpen: an OrderedCollection() imageName: 'Data:Users:ducasse:Workspace:FirstCircle:SqDemoes:Sq-Demo-0104: Sque...etc... pluginList: #('MiscPrimitivePlugin'->a MiscPrimitivePlugin) mappedPluginEntries: #() inputSem: nil quitBlock: [] in InterpreterSimulatorMSB(InterpreterSimulator)>>test {[^ self]}...etc... InterpreterSimulatorMSB(ObjectMemory)>>growObjectMemory: Receiver: an InterpreterSimulatorMSB Arguments and temporary variables: delta: 1033744 limit: nil Receiver's instance variables: memory: a Bitmap of length 2138980 youngStart: 0 endOfMemory: 8056808 memoryLimit: 8555920 nilObj: 4 falseObj: 12 trueObj: 20 specialObjectsOop: 1940220 rootTable: #(0 0 0 nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... rootTableCount: 0 child: 2401690460 field: 8056608 parentField: 3 freeBlock: 8056804 lastHash: 18437 allocationCount: 0 lowSpaceThreshold: 0 signalLowSpace: false compStart: 7944744 compEnd: 8057936 fwdTableNext: 8056816 fwdTableLast: 8555912 remapBuffer: #(8056380 nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil)...etc... remapBufferCount: 0 allocationsBetweenGCs: 4000 tenuringThreshold: 2000 statFullGCs: 0 statFullGCMSecs: 0 statIncrGCs: 1 statIncrGCMSecs: 4 statTenures: 0 statRootTableOverflows: 0 freeContexts: 1 freeLargeContexts: 1 interruptCheckCounter: 872 totalObjectCount: 181605 shrinkThreshold: 8388608 growHeadroom: 4194304 headerTypeBytes: a CArrayAccessor on: #(8 4 0 0) youngStartLocal: 0 activeContext: 8056608 theHomeContext: 8056608 method: 3969776 receiver: 2061796 instructionPointer: 3969821 stackPointer: 8056648 localIP: 3969821 localSP: 8057488 localHomeContext: 8057448 localReturnContext: 8057448 localReturnValue: 307201 messageSelector: 4144 argumentCount: 1 newMethod: 3220880 currentBytecode: 205 successFlag: true primitiveIndex: 71 methodCache: #(370400 681696 3561864 101 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... atCache: #(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... lkupClass: 660584 reclaimableContextCount: 4 nextPollTick: 255637 nextWakeupTick: 0 lastTick: 255137 interruptKeycode: 2094 interruptPending: false semaphoresToSignalA: #(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... semaphoresUseBufferA: true semaphoresToSignalCountA: 0 semaphoresToSignalB: #(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... semaphoresToSignalCountB: 0 savedWindowSize: 34406785 fullScreenFlag: 0 deferDisplayUpdates: false pendingFinalizationSignals: 0 compilerInitialized: false compilerHooks: nil extraVMMemory: 0 newNativeMethod: 4 methodClass: 681448 receiverClass: 660584 interpreterVersion: nil obsoleteIndexedPrimitiveTable: a CArrayAccessor on: #(a CArrayAccessor on: #(nil nil nil) a CArrayAccessor on: #(nil nil nil) a CArrayAccesso...etc... obsoleteNamedPrimitiveTable: a CArrayAccessor on: #(#(#gePrimitiveMergeFillFrom...etc... interpreterProxy: an InterpreterSimulatorMSB showSurfaceFn: nil interruptCheckCounterFeedBackReset: 1000 interruptChecksEveryNms: 3 externalPrimitiveTable: a CArrayAccessor on: #(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... byteCount: 2268 sendCount: 1 traceOn: true myBitBlt: a BitBltSimulator displayForm: nil filesOpen: an OrderedCollection() imageName: 'Data:Users:ducasse:Workspace:FirstCircle:SqDemoes:Sq-Demo-0104: Sque...etc... pluginList: #('MiscPrimitivePlugin'->a MiscPrimitivePlugin) mappedPluginEntries: #() inputSem: nil quitBlock: [] in InterpreterSimulatorMSB(InterpreterSimulator)>>test {[^ self]}...etc... InterpreterSimulatorMSB(ObjectMemory)>>fullCompaction Receiver: an InterpreterSimulatorMSB Arguments and temporary variables: sz: 62387 Receiver's instance variables: memory: a Bitmap of length 2138980 youngStart: 0 endOfMemory: 8056808 memoryLimit: 8555920 nilObj: 4 falseObj: 12 trueObj: 20 specialObjectsOop: 1940220 rootTable: #(0 0 0 nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... rootTableCount: 0 child: 2401690460 field: 8056608 parentField: 3 freeBlock: 8056804 lastHash: 18437 allocationCount: 0 lowSpaceThreshold: 0 signalLowSpace: false compStart: 7944744 compEnd: 8057936 fwdTableNext: 8056816 fwdTableLast: 8555912 remapBuffer: #(8056380 nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil)...etc... remapBufferCount: 0 allocationsBetweenGCs: 4000 tenuringThreshold: 2000 statFullGCs: 0 statFullGCMSecs: 0 statIncrGCs: 1 statIncrGCMSecs: 4 statTenures: 0 statRootTableOverflows: 0 freeContexts: 1 freeLargeContexts: 1 interruptCheckCounter: 872 totalObjectCount: 181605 shrinkThreshold: 8388608 growHeadroom: 4194304 headerTypeBytes: a CArrayAccessor on: #(8 4 0 0) youngStartLocal: 0 activeContext: 8056608 theHomeContext: 8056608 method: 3969776 receiver: 2061796 instructionPointer: 3969821 stackPointer: 8056648 localIP: 3969821 localSP: 8057488 localHomeContext: 8057448 localReturnContext: 8057448 localReturnValue: 307201 messageSelector: 4144 argumentCount: 1 newMethod: 3220880 currentBytecode: 205 successFlag: true primitiveIndex: 71 methodCache: #(370400 681696 3561864 101 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... atCache: #(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... lkupClass: 660584 reclaimableContextCount: 4 nextPollTick: 255637 nextWakeupTick: 0 lastTick: 255137 interruptKeycode: 2094 interruptPending: false semaphoresToSignalA: #(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... semaphoresUseBufferA: true semaphoresToSignalCountA: 0 semaphoresToSignalB: #(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil...etc... semaphoresToSignalCountB: 0 savedWindowSize: 34406785 fullScreenFlag: 0 deferDisplayUpdates: false pendingFinalizationSignals: 0 compilerInitialized: false compilerHooks: nil extraVMMemory: 0 newNativeMethod: 4 methodClass: 681448 receiverClass: 660584 interpreterVersion: nil obsoleteIndexedPrimitiveTable: a CArrayAccessor on: #(a CArrayAccessor on: #(nil nil nil) a CArrayAccessor on: #(nil nil nil) a CArrayAccesso...etc... obsoleteNamedPrimitiveTable: a CArrayAccessor on: #(#(#gePrimitiveMergeFillFrom...etc... interpreterProxy: an InterpreterSimulatorMSB showSurfaceFn: nil interruptCheckCounterFeedBackReset: 1000 interruptChecksEveryNms: 3 externalPrimitiveTable: a CArrayAccessor on: #(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...etc... byteCount: 2268 sendCount: 1 traceOn: true myBitBlt: a BitBltSimulator displayForm: nil filesOpen: an OrderedCollection() imageName: 'Data:Users:ducasse:Workspace:FirstCircle:SqDemoes:Sq-Demo-0104: Sque...etc... pluginList: #('MiscPrimitivePlugin'->a MiscPrimitivePlugin) mappedPluginEntries: #() inputSem: nil quitBlock: [] in InterpreterSimulatorMSB(InterpreterSimulator)>>test {[^ self]}...etc... --- The full stack --- Bitmap(Object)>>doesNotUnderstand: #copyGrownBy: ...etc...

6 5

Squeak coding style...
by goran.krampe＠bluefish.se 16 Mar '04

16 Mar '04

Hi all! I have been BFAVing quite a bit the latest week and one thing that has annoyed me a bit :) is our lack of consistency in coding style. Sure, it is not a BIG THING - but at the same time a consistent style improves the impression. Now - we all have different preferences here, but let me show you a hypothetical example: sillyFy: string "take the argument and sillyfy it" ^ string, ' is silly'. Ok, there are 6 things here that annoys me. :) Note though that I write this with toungue in cheek! Some of these things are plain silly but I confess - they still bug me. :) Here goes: 1. The comment starts with lower case and has no period. Just looks sloppy IMHO. This one is actually one that I think we could agree on. Right? 2. There is no empty line between the code and the comment. I like an empty line there so that I can easily see where the code starts. If there is no comment at all then I usually still have an empty line below the signature before the code. Also hopefully a style convention we could try to follow perhaps. 3. The code should be indented. Agree? :) 4. There is a space after ^. Sure, people do it differently. :) 5. The naming of the parameter "string" is not really in my taste. I would have liked "aString" better. 6. There is a period after the last statement. Not needed. Anyway, the above was just to spark the thread. I know this topic is of very low importance though so.... well. :) regards, Göran PS. Perhaps we could write a "styleifier"? Some of these things are both easily detected and corrected.

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