Squeak-dev March 1999

squeak-dev@lists.squeakfoundation.org

153 participants
338 discussions

[BUG] ChangeSorter>findCngSet
by Tim Rowledge 02 Mar '99

02 Mar '99

If you use the 'find' option in the change sorter and accept nothing, you will get a notifier since #classNotFound is sent and not understood. It actually looks more like a logic snafu, since I suspect it would be more useful simply to return after an empty input. The 'classNotFound' is probably more useful after a pattern is accepted and nothing matches. Whoever wrote the method (system claims dan did) might like to check and see if a wrong version got released. -- I just found the last bu Tim Rowledge: rowledge(a)interval.com (w) +1 (650) 842-6110 (w) tim(a)sumeru.stanford.edu (h) <http://sumeru.stanford.edu/tim>

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Re: Size of changes file
by Reinier van Loon 01 Mar '99

01 Mar '99

Jan wrote: > > aStream := FileStream >readOnlyFileNamed:'http://www.smalltalk.org/stuff.html'. > and why not extend that to classes? slider := self classAt: 'ctp://cww.smalltalk.org/thinglab/slider'. (ctp = Class Transfer Protocol, cww = Class Wide Web) or: slider := self webClassesAt: 'smalltalk.org/thinglab/slider'. Hm, does this look like Java? Reinier.

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Re: Installation help needed (Solaris, Linux)
by Ian Piumarta 01 Mar '99

01 Mar '99

> The default memory size that Squeak allocates is a bit low for the > newest version ( we shoudl change that). sqXWindow.c(91): #define DefaultHeapSize (20*1024*1024) /* 20 megabytes */ Ian

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RE: Color>>#hash
by Raab, Andreas 01 Mar '99

01 Mar '99

Andres, > No kidding Color>>#hash is not good enough! I changed the cache's > implementation > from a Dictionary to a coupled SortedCollection pair and the execution > time went > down from 4m 15s to 1m 30s!!! > Looks like you should use a PluggableDictionary instead. They allow you to supply a custom hash (and equality) block for exactly this kind of operation where you basically have some good assumptions about the size and the distribution of objects. Give it a try. > By the way, if you get aForm and send edit to it in a morphic world, it > hangs > until you press ctrl-break, gives out a strange error and you can continue > by > aborting it. And when you get up to the parent (still MVC) project, all > your > aborted edits appear on the screen... ???. > Yup. #edit is a leftover from MVC where it opens a BitEditor on the form. This should be fixed to open up a SketchEditorMorph when running in Morphic. Andreas -- PLEASE NOTE NEW EMAIL ADRESS! +===== Andreas Raab ========= (andreasr(a)wdi.disney.com) ==+ | Walt Disney Imagineering Phone: +1 818 544 5016 I I Glendale, CA Fax: +1 818 544 4544 I +======< http://isgwww.cs.uni-magdeburg.de/~raab >========+

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Fwd: Re: Installation help needed (Solaris, Linux)
by ajbn＠ufpa.br 01 Mar '99

01 Mar '99

Forwarded Message: > To: markus_kohler(a)hp.com > From: Ian Piumarta <Ian.Piumarta(a)inria.fr> > Subject: Re: Installation help needed (Solaris, Linux) > Date: Mon, 1 Mar 1999 13:27:33 +0100 (MET) > ----- > > The default memory size that Squeak allocates is a bit low for the > > newest version ( we shoudl change that). > > sqXWindow.c(91): #define DefaultHeapSize (20*1024*1024) /* 20 megabytes */ > > Ian >

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Fwd: Re: Installation help needed (Solaris, Linux)
by ajbn＠ufpa.br 01 Mar '99

01 Mar '99

Forwarded Message: > To: kpgrant(a)mindspring.com > From: Markus Kohler <markus_kohler(a)hp.com> > Subject: Re: Installation help needed (Solaris, Linux) > Date: Mon, 01 Mar 1999 10:40:36 +0100 > ----- > kpgrant(a)mindspring.com wrote: > > > > I've just tried to install squeak on two machines (I'm hoping > > to do my dissertation in Smalltalk). One is running the solaris > > os and one linux. Both are showing the same error message and > > no one involved can figure out why. Specifically, both seem to > > start up ok but both show a little white box in the upper left > > hand corner that says: "Squeak cannot locate the changes file > > named Squeak2.3.changes." and so forth. The file is definitely > > present, in the same directory, and has the same name it came > > with (which is the name in the error message). Anyone got any > > ideas about this? > > You need read and write access to it. > > > > > We haven't done much with the solaris installation but I > > have played around with the other one on my linux box (300mhz > > K6-2 w/32meg pc-100 sdram). I'm having a host of problems that > > may be interrelated. After startup (it works in spite of the > > error mentioned above) the environment runs fine for a while, > > then either shuts itself down with a "low memory" sort of error > > message or else it starts ignoring the mouse. > > > The default memory size that Squeak allocates is a bit low for the > newest > version ( we shoudl change that). > > Try starting squeak with -memory 15M for 15MBytes for example. > > > When I monitor > > system resource usage the memory looks fine but at times > > the cpu usage rises to 100% (press the middle mouse button and > > a little menu appears with the option "keep this window up" > > if I choose to keep it up then the cpu usage starts rising > > until it reaches 100% and then stays there until I close the > > menu, at which point it drops rapidly). All rather confusing. > > > > I couldn't find any mention of this on any of the squeak web > > pages (unless it's on the one at gatech, which I can't get on > > for some reason) so I'm crying for help here. > > > > Markus > > -- > Markus Kohler mailto:markus_kohler@hp.com >

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Installation help needed (Solaris, Linux)
by kpgrant＠mindspring.com 01 Mar '99

01 Mar '99

I've just tried to install squeak on two machines (I'm hoping to do my dissertation in Smalltalk). One is running the solaris os and one linux. Both are showing the same error message and no one involved can figure out why. Specifically, both seem to start up ok but both show a little white box in the upper left hand corner that says: "Squeak cannot locate the changes file named Squeak2.3.changes." and so forth. The file is definitely present, in the same directory, and has the same name it came with (which is the name in the error message). Anyone got any ideas about this? We haven't done much with the solaris installation but I have played around with the other one on my linux box (300mhz K6-2 w/32meg pc-100 sdram). I'm having a host of problems that may be interrelated. After startup (it works in spite of the error mentioned above) the environment runs fine for a while, then either shuts itself down with a "low memory" sort of error message or else it starts ignoring the mouse. When I monitor system resource usage the memory looks fine but at times the cpu usage rises to 100% (press the middle mouse button and a little menu appears with the option "keep this window up" if I choose to keep it up then the cpu usage starts rising until it reaches 100% and then stays there until I close the menu, at which point it drops rapidly). All rather confusing. I couldn't find any mention of this on any of the squeak web pages (unless it's on the one at gatech, which I can't get on for some reason) so I'm crying for help here. Thanks, Kevin

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Color>>#hash
by Andres Valloud 01 Mar '99

01 Mar '99

Hi. No kidding Color>>#hash is not good enough! I changed the cache's implementation from a Dictionary to a coupled SortedCollection pair and the execution time went down from 4m 15s to 1m 30s!!! There are two sorted collections, the first contains associations between colors and their corresponding closest quantized colors, and the second has just the colors. The second is looked up for the corresponding index in the first. As the first is sorted on the key value of associations, the indexes match. All the lookups are done using a QuickSearch object that knows how to perform binary lookups on sorted collections. That alone almost cut execution time by 3!!! The new tally leaves look like this: 8.3 SortedCollection class>>new: 7.5 SortedCollection(OrderedCollection)>>at: 6.4 QuickSearch>>qSearchFrom:to: 5.9 Color>>distanceTo: 5.6 BitBlt>>pixelAt: 5.3 QuickSearch>>is:leq: 4.8 Form>>setExtent:depth: 4.6 BitBlt>>pixelAt:put: 4.4 BitBlt class>>destForm:sourceForm:hal...rigin:extent:clipRect: 4.2 Rectangle class>>origin:extent: 4.1 Form class>>extent:depth: 4.1 SortedCollection(OrderedCollection)>>insert:before: 2.0 Color class>>r:g:b:range: By the way, if you get aForm and send edit to it in a morphic world, it hangs until you press ctrl-break, gives out a strange error and you can continue by aborting it. And when you get up to the parent (still MVC) project, all your aborted edits appear on the screen... ???. Andres.

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