Squeak-dev June 1999

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139 participants
408 discussions

Re: Shrinking frustration!@#$
by Bruce ONeel 25 Jun '99

25 Jun '99

"Ian Trudel" <ian(a)monk.cgocable.ca> wrote: > Hello folks, > > <frustration> > Okai, in fact I am looking for speeding up Squeak on my sluggish PC (P133, > 82 Megs RAM, on NT 4.0 Server). I thought shrinking useless things (for me) > would speed up things. Maybe I am right. Maybe you gourous' have alternative > or better solution? Or smartShrinking tekneeks!! Anything else than buy a > new PC. *grin* Hi, Unless you're short of memory, which doesn't sound true here, and you're paging a lot I don't think that shrinking Squeak will help any. Sorry... cheers bruce

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Re: Screenshots
by Bruce ONeel 25 Jun '99

25 Jun '99

Hi, One of the things that should be pointed out to everyone is that exploring the menus early and often can be quite educational. Really explore them, it's amazing what's there. More than once I've found some menu option which makes my life easier :-) cheers bruce Dwight Hughes <dwighth(a)ipa.net> wrote: > Well, duh. It's taken me this long to realize that if I do a > shift+right-click in windows/panes with menus that cascade to "more..." > submenus, I can get the submenu directly. And you can hold either shift > key down to get the syntax coloring in a browser text pane -- just hold > down a shift key, right-click to get the menu, select "pretty print", > then let go of the shift key. > > -- Dwight > > Bob Arning wrote: > > > > On Thu, 24 Jun 1999 20:27:04 -0400 (EDT) Doug Way <dway(a)mat.net> = > > wrote:=20 > > >> >I was interested in the following things that I saw: > > >> > > > >> >1. Syntax highlighting > > >>=20 > > >> Curiously enough, that is available in squeak. Use the shifted yellow > > >> button menu in a browser text pane, choose pretty print and keep the > > >> left shift down til the code changes. I don't know if that's exactly > > >> what was used in the picture, but it's certainly similar.=20 > > > > > >I think he might be referring to the syntax coloring. > > > > I think so, too. That's why I mentioned keeping the left shift key down. > > > > Cheers, > > Bob

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RE: Shrinking frustration!@#$
by Ian Trudel 25 Jun '99

25 Jun '99

: -----Original Message----- : From: Eric Ulevik [mailto:eau@fast.fujitsu.com.au] : Sent: 25 juin, 1999 05:55 : To: squeak(a)cs.uiuc.edu : Subject: Re: Shrinking frustration!@#$ : : : From: Ian Trudel <ian(a)monk.cgocable.ca> : > I spent 4 hours shrinking Squeak*. : > Okai, in fact I am looking for speeding up Squeak on my : sluggish PC (P133, : > 82 Megs RAM, on NT 4.0 Server). I thought shrinking useless things (for : me) : > would speed up things : : I'm running NT 4 Server on a P75 with 48MB RAM, so I know what you mean. : : I'm not an expert, but I don't think shrinking images will help speed. Well, depends upon the use. For example, if I make stastistics of instVars, looks like there is a lot more of them on a full image, as well as classes. Make this stat takes serveral minutes. Maybe it doesn't change much on general use though.. : What helps speed for me is: : * screen resolution 1024x768x256 (instead of 16bpp) I am running at 800x600x16bpp. I have tried at 800x600x256, it speeded up. I'll test some more see if that worth changing. : * using a newer version of Squeak (2.4b) I am using 2.4c (updated from server). : * not using Morphic Oops, there I would miss something! Every new things look like being done in Morphic. Though I agree, MVC is way faster. Thanks, Ian

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Shrinking frustration!@#$
by Ian Trudel 25 Jun '99

25 Jun '99

Hello folks, <frustration> I spent 4 hours shrinking Squeak*. I've hacked majorShrink and shrink only things I don't use (mainly 3D and Sound). I ended with a smaller image, like 5 megs something into ~2.8megs. Great I thought! I then started to mess around my shrinked image and see if everything are still workable. MVC, network, etc.. okai.. humm.. color palettes, Helge's Syntax Highlighter, Morphic's draw tool, Whisker.. ooops.. won't work properly. Humm, where is the smartShrinker? Okai, in fact I am looking for speeding up Squeak on my sluggish PC (P133, 82 Megs RAM, on NT 4.0 Server). I thought shrinking useless things (for me) would speed up things. Maybe I am right. Maybe you gourous' have alternative or better solution? Or smartShrinking tekneeks!! Anything else than buy a new PC. *grin* I am lot interested to Squeak and I spend a lot of my free time on it. But say that I don't like when Squeak eat my processor nor hangs while processing something (Yeah, why not looking forward Peter Smet's Publish-Subscribe..). I mainly got into Squeak to learn about his VM and implementation. But Squeak is so rich that I am getting into it. For short, I just need C Code Generator, Simulator, MVC, Morphic, Networking stuffs and anything relevant to let me try most of stuff you guys posting. I sure don't need SqueakAlice, 3D and sound. (*) Ewh, it takes around 3 hours to edit/recompile linux kernel on a bare 486.. eek ::P </frustration> I am open to your suggestions. Meanwhile, I'll wait for SqueakOS to put it on one of my 486 client. ;:P Regards, Ian ---------------------------------- Ian Trudel Email: ian(a)monk.cgocable.ca URL: http://monk.cgocable.ca/~ian/ ----------------------------------

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Re: I was wondering ...
by Lawson English 25 Jun '99

25 Jun '99

Christian Brunschen <cb(a)df.lth.se> said: > How would one handle a message which, in Squeak, takes an Integer ? >You'd want it to take a C 'int' on the Objective-C side, and translate >that to a Squeak Integer in the process of forwarding. But that also means >that the SqueakProxy would have to be able to extract this information - >'parameter no. 4 is an Integer, so we take in an 'int' from Objective-C' - >from the Squeak object it stands for... > This can obviously be 'solved' by annotating Squeak methods with type >information, but that doesn't feel like a good solution. > Any ideas, other than asking Apple to rewrite the compiler so that type >information is saved on the call stack as well? ;) When an object that is to be referenced by SqueakProxy is initialized, it attempts to register its relevant methods' parameter-lists with SqueakProxy, which keeps a list of unique references to each class's methods' parameter-list(s). After that, every time an instance of a given class evokes SqueakProxy, it is automatically assigned a reference to the correct parameter-list(s) and SqueakProxy keeps track of what is what when passing parameters around. Reference counting is done by SqueakProxy, and when the count hits zero, the parameter-list(s) are deleted. ---------------------------------------------------------------------- Use your imagination. ----------------------------------------------------------------------

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Re: Garbage Collection catch-22 with blocks - Thanks
by Peter Smet 25 Jun '99

25 Jun '99

Alan, this is great. All I needed to do was add: aBlock beWeak to my code, do the garbage collection, and lo and behold, the block was gone. I had guessed that 'pulling the receiver out of the block' was going to be necessary at some stage, but didn't really know how to go about it. I will need to synchronize things, to ensure that the system doesn't try to evaluate blocks where the gc has turned the receiver to nil. I initially thought this was going to be really difficult, since the weakBlocks will have weakReceivers all over the place. However, since my system already synchronizes with the garbage collector, all I need to do is add the weakReceivers into my registry. Whenever one is collected, my finalization Process will ensure it's block is cleaned up simultaneously. If and when it works I will post a new change set up on the wiki (under projects, publish-subscribe). Thanks again! Peter >Briefly, the solution involves defining a new subclass of MethodContext, >called WeakMethodContext, that uses a WeakArray to hold on to the >receiver. A MethodContext will answer a new WeakMethodContext >with the same state in response to the message #asWeakContext. >Sending the message #beWeak to a BlockContext causes it to >replace its "home" context with "homeContext asWeakContext." > >I tested this briefly, and it seems to work.

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Re: Screenshots
by Leandro Caniglia 25 Jun '99

25 Jun '99

>I was interested in the following things that I saw: > >1. Syntax highlighting >2. Function plotter >3. Whisker > >Anyone know if these are available? There is a Function plotter package (by Andres Valloud) at http://www.dm.uba.ar/mathMorphs Leandro

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[BUG] [FIX] Browser loses method text if new first method has spelling fault
by Tim Rowledge 25 Jun '99

25 Jun '99

IF you attempt to save a method that has an unknown symbol (my usual spelling mistake!) AND you have the -all- message category selected then the method text is whipped out from under you. It appears to be a problem in Browser>messageCategoryListIndex:, or at least the usage of it within Browser>contents:notifying:. There is an attempt to correct for the 'wrong' category being selected and the code ends up clearing the code view. There is also a trivial bug in Browser>selectUnclassifiedCategory, where 0 is hardcoded as the index of the 'no messages' category; it seems more reasonable for it to be 1, since it follows 'all' which is an imaginary entry. As for a fix, I imagine changing the contents:notifying: code to send some other message that changes the category that is used to compile under but does not affect the browser display should work. Since both of the methods (#selectOriginalCategoryForCurrentMethod & #selectUnclassifiedCategory) are only used in contents:notifying: this ought to be reasonably safe. It seems to be ok if we change #selectMessageCategoryNamed: to avoid the display updating and change #selectUnclassifiedCategory to use it with the name of the category rather than the index. Possible fix changeset enclosed. tim -- Useful random insult:- Overdue for reincarnation. Tim Rowledge: rowledge(a)interval.com (w) +1 (650) 842-6110 (w) tim(a)sumeru.stanford.edu (h) <http://sumeru.stanford.edu/tim> 'From Squeak 2.4b of April 23, 1999 on 24 June 1999 at 7:25:51 pm'! !Browser methodsFor: 'message category list' stamp: 'TPR 6/24/1999 19:20'! selectMessageCategoryNamed: aSymbol "Given aSymbol, select the category with that name. Do nothing if aSymbol doesn't exist." (self messageCategoryList includes: aSymbol) ifFalse: [^ self]. messageCategoryListIndex _ (self messageCategoryList indexOf: aSymbol)! ! !Browser methodsFor: 'message category list' stamp: 'TPR 6/24/1999 19:19'! selectUnclassifiedCategory "Select the unclassified category." self selectMessageCategoryNamed: 'as yet unclassified' asSymbol! !

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RE: RE: Screenshots
by Ian Trudel 25 Jun '99

25 Jun '99

: -----Original Message----- : From: Bob Arning [mailto:arning@charm.net] : Sent: 24 juin, 1999 19:04 : To: squeak(a)cs.uiuc.edu : Subject: Re: RE: Screenshots : : : On Thu, 24 Jun 1999 17:42:22 -0400 "Stephen Pair" : <spair(a)advantive.com> wrote: : >I was interested in the following things that I saw: : > : >1. Syntax highlighting : : Curiously enough, that is available in squeak. Use the shifted : yellow button menu in a browser text pane, choose pretty print : and keep the left shift down til the code changes. I don't know : if that's exactly what was used in the picture, but it's : certainly similar. A better alternative that does syntax highlighting automatically is found at http://home.munich.netsurf.de/Helge.Horch/SqueakSharesSoar.html?ViewSource Ian

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RE: Intro To Programming
by David Mitchell 25 Jun '99

25 Jun '99

I couldn't really get into this one. (If I am thinking of the same book, I remember it was large format, black, with legos for the cover art. I read it twice because I thought so much of OOP (and his Object Oriented Analysis work) and I thought I must be missing something. It was lent to me by a friend who was doing more full-time circles-and-arrows (read: modeling) than working in front of an image. He really liked it so I guess it just comes down to differnt styles and approaches. It didn't feel like a Patterns work at all. (The way Gang of Four, Smalltalk Companion, Beck, and Analysis Patterns all do to me -- despite their divergent writing styles.) -----Original Message----- From: Edward P Luwish [mailto:eluwish@uswest.com] [snip] > Peter Coad's Object Oriented Programming What do you think of his "Object Patterns" book? It expands on OO Programming into the areas of analysis and design using a single method for all three activities based on a much simpler approach than UML (i.e., more like CRC). It may be good for beginners unless it is so far off the track that it can do more harm than good. I am not experienced or knowledgeable enough to evaluate it. [/snip] Ed

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