Squeak-dev May 1999

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126 participants
289 discussions

Re: Event triggers - new improved diet lite...
by Peter Smet 27 May '99

27 May '99

Mark, I have just opened a virgin 2.4b image, filed in the second changeset (23may) that I posted, and simply typed 'PostOffice start' in the transcript. (remember, this is just a testing process - you dont need to do anything with the PostOffice class itself to use events - that protocol is all defined in Object). It runs the background process with no errors, and has been doing so for about 15 minutes. This is on a pentium 133 laptop with win NT. Are you on a mac or a pc? Would you be able to do the same and verify that you still get the same error? I would be very interested in tracking down this problem if we can reproduce it. Anyone else on the list tried this and had problems?? I also tried a few basic things in the clean image, which also worked as expected: 2 when: #bang send: #show: to: Transcript with: 'ouch' 2 trigger: #bang (the transcript window will print 'ouch'). One potential source of errors in the testing environment is that having to break out of the testing thread may leave the finalization process, semaphores, etc in an inconsistent state. The best way to do the initial tests is just to try some simple lines like the above. If that works, then try the "PostOffice start". If the PostOffice start works, good. The safest thing to do then is quit the image without saving. That way, there will be no backgrounds threads etc interfering with any other tests you may do. "start" is a pretty heavy duty test - it will literally create thousands of objects for the garbage collector. Anyway, let me know how you go. Peter >When I try "PostOffice start" I get an error about error: having the wrong >number of parameters in WeakRegistry>>protected: It's a hard error to find >because (a) the error notifier shows up behind all other windows, since >it's running in a background thread (restore the display to see the error >notifier) and (b) the debugger for some reason doesn't show the backtrace >if you choose to debug. > >But maybe this is on purpose? I get a similar kind of error dialog when I >send #run to the Transcript (playing with variations on Peter's examples). > >Mark > >-------------------------- >Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 >(404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu >http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html > > >

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Re: Hardcopy printing
by Leandro Caniglia 26 May '99

26 May '99

>I think someone has hacked together a LaTeX emitter for prettyprinting >of code. But right now I can not remember where I saw that! Andres Valloud wrote a TeXfileOut facility. You can download it from http://www.dm.uba.ar/mathMorphs /Leandro

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Window menu
by Richard L. Peskin 26 May '99

26 May '99

In the 2.4c image what is the " Two-tone/full color" wimdow menu item supposed to do? Mine does nothing as far as I can detect. Also in the same menu, if one choses "transparent" from the window "color..." selection object, it looks like the windows won't scroll properly. That is, text gets messed up during scrolling. --dick peskin ================================= R. L. Peskin, Rutgers Univ. ;<peskin(a)caip.rutgers.edu>;<http://www.caip.rutgers.edu/~peskin> RLP Consulting <rlpcon(a)sover.net>; <http://www.sover.net/~rlpcon>

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Re: [ENH] Message / Symbol / Block compatibility
by Marcel Weiher 26 May '99

26 May '99

> From: merlyn(a)stonehenge.com (Randal L. Schwartz) > > >>>>> "Doug" == Doug Way <dway(a)mat.net> writes: > > Doug> I noticed one minor downside to the Trampoline versus the other methods, > Doug> which is that you can't pass messages to it which Object happens to > Doug> understand, such as 'asString' (since the Trampoline uses > Doug> #doesNotUnderstand:). I wonder if there's any way around that. > > Have it return an object instantiated with a class with a superclass > of nil. Look at ObjectTracer (I think that's it) for an example that > works. Yes, I think that's what I did: UndefinedObject subclass: #Trampoline instanceVariableNames: 'collection iterationMessage ' classVariableNames: '' poolDictionaries: '' category: 'Collections-Support' This may have gotten mangled between fixing a typo and creating the changeset. I hope the new changeset is better. Marcel

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Re: "better" index to the mailing list archive?
by "Gran" Hultgren 26 May '99

26 May '99

---joe davison <joda(a)interaccess.com> wrote: > Hi, > I no longer have time to subscribe to this mailing list, but > from time to time I like to drop by the archive to see how things > are progessing. [SNIP] > Thanks. > > joe davison Just wanted to promote Georgs excellent searchable version of this mailinglist, and yet one more time note that it should be linked from www.squeak.org/squeak.cs.uiuc.edu: http://macos.tuwien.ac.at:9009/Server.home regards, Gran === Gran Hultgren, gohu(a)rocketmail.com, icq#:6136722 GSM: +46 709 472152, http://195.22.65.4 "First they ignore you. Then they laugh at you. Than they fight you. Then you win." -- Gandhi _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com

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Re: [ENH] Message / Symbol / Block compatibility
by merlyn＠stonehenge.com 26 May '99

26 May '99

>>>>> "Marcel" == Marcel Weiher <marcel(a)system.de> writes: >> Have it return an object instantiated with a class with a superclass >> of nil. Look at ObjectTracer (I think that's it) for an example that >> works. Marcel> Yes, I think that's what I did: Marcel> UndefinedObject subclass: #Trampoline Marcel> instanceVariableNames: 'collection iterationMessage ' Marcel> classVariableNames: '' Marcel> poolDictionaries: '' Marcel> category: 'Collections-Support' Marcel> This may have gotten mangled between fixing a typo and creating the Marcel> changeset. I hope the new changeset is better. No, an UndefinedObject has Object somewhere in its superclass chain. I'm talking about setting the superclass to *nil*. UndefinedObject ~= nil :) Here's the class definition for ObjectTracer: nil subclass: #ObjectTracer instanceVariableNames: 'tracedObject recursionFlag ' classVariableNames: '' poolDictionaries: '' category: 'Kernel-Objects' Look at it to make sure you're doing the right thing. -- Name: Randal L. Schwartz / Stonehenge Consulting Services (503)777-0095 Keywords: Perl training, UNIX[tm] consulting, video production, skiing, flying Email: <merlyn(a)stonehenge.com> Snail: (Call) PGP-Key: (finger merlyn(a)teleport.com) Web: <A HREF="http://www.stonehenge.com/merlyn/">My Home Page!</A> Quote: "I'm telling you, if I could have five lines in my .sig, I would!" -- me

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Re: Hardcopy printing
by "Gran" Hultgren 26 May '99

26 May '99

---"Richard L. Peskin" <rlpcon(a)vermontel.net> wrote: > > What are the "hardcopy" printing capabilities of Squeak? Is there "pretty > printing" for hardcopy output? > --dick peskin I think someone has hacked together a LaTeX emitter for prettyprinting of code. But right now I can not remember where I saw that! Otherwise Dandelion seems to be able to emit HTML (if I read the homepage correctly). http://www.mars.dti.ne.jp/~umejava/smalltalk/stClasses/dandelion/index.html regards, Gran === Gran Hultgren, gohu(a)rocketmail.com, icq#:6136722 GSM: +46 709 472152, http://195.22.65.4 "First they ignore you. Then they laugh at you. Than they fight you. Then you win." -- Gandhi _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com

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Re: [ENH] Message / Symbol / Block compatibility
by merlyn＠stonehenge.com 26 May '99

26 May '99

>>>>> "Doug" == Doug Way <dway(a)mat.net> writes: Doug> I noticed one minor downside to the Trampoline versus the other methods, Doug> which is that you can't pass messages to it which Object happens to Doug> understand, such as 'asString' (since the Trampoline uses Doug> #doesNotUnderstand:). I wonder if there's any way around that. Have it return an object instantiated with a class with a superclass of nil. Look at ObjectTracer (I think that's it) for an example that works. -- Name: Randal L. Schwartz / Stonehenge Consulting Services (503)777-0095 Keywords: Perl training, UNIX[tm] consulting, video production, skiing, flying Email: <merlyn(a)stonehenge.com> Snail: (Call) PGP-Key: (finger merlyn(a)teleport.com) Web: <A HREF="http://www.stonehenge.com/merlyn/">My Home Page!</A> Quote: "I'm telling you, if I could have five lines in my .sig, I would!" -- me

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[ENH] More Message,Block compatibility
by Marcel Weiher 26 May '99

26 May '99

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Re: PWS Resource Utilization
by bparsia＠email.unc.edu 26 May '99

26 May '99

--On Tuesday, May 25, 1999, 11:25 AM -0700 "Laurence Rozier" <lrozier(a)thepattern.com> wrote: > When I start PWS, performance throughout the rest of my Squeak > environment takes a nose dive. Simple things like selecting a window > have a noticeable delay. I tried tweaking the secondsBetweenBackups := 1 > * (60 * 60) and the Delay forMilliseconds: 100 behaviors in the > loopOnPort:loggingTo: method but to no avail. Any suggestions? > My guess is that your Squeak version is > 2.1. Something happened somewhere around 2.2/2.3 that causes this problem. I've seen it on Macs and Windows. 2.1, OTOH runs fine. Worse, not everyone seems to see it. I've spent some hours digging around and I've tenatively concluded that it's a VM problem. Next step, I suppose, is to compare the c code for the network primatives between 2.1 and 2.4. I wouldn't mind this as much as it's not *just* the UI or other processes slowing down--the server slows waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay down. (No, the vowels were *not* superfluous! :)) I have yet to test Comache (the next generation PWS) though I intend to this week. If it exhibits the problem, well, it'll be another data point! My current advice is that if you see this problem, drop back to 2.1. If anyone *is* running 2.2 or greater wthout this problem, please let me know! Cheers, Bijan.

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