Squeak-dev November 2000

squeak-dev@lists.squeakfoundation.org

106 participants
325 discussions

RE: Code Simulation Error during debugging
by Raab, Andreas 01 Nov '00

01 Nov '00

Henrik, > A simple one would be to release the final Exceptions code as > an update, and issue new VMs. One reason why we're a bit hesitant to do this is that we are SOOOOOOO close to having a J3 for everyone to play with - as of today, j3 did run approx. 3922 bytecodes before locking up on MacOS, due to a disagreement between Ian and MacOS what the "right" stack frame is (of course, Ian is right and MacOS is wrong...) Doing the exception modifications would require several changes in the j3 and right now we want to look at porting j3 to a number of key platforms. So I wouldn't bet on the exception modifications in the immediate future. - Andreas

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Re: minnow.cc.gatech.edu appears to be down
by Andrew C. Greenberg 01 Nov '00

01 Nov '00

And with this message, it is so sent. At 7:32 PM +0100 11/1/00, Andreas Kuckartz wrote: > > minnow.cc.gatech.edu is not answering on port 80. I noticed last night and >> it still seems out today. > >The recommended action in such situations is to send mail to >swiki-bugs(a)cc.gatech.edu > >Andreas

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minnow.cc.gatech.edu appears to be down
by Kurt Thams 01 Nov '00

01 Nov '00

minnow.cc.gatech.edu is not answering on port 80. I noticed last night and it still seems out today. -- kurt

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Re: Apology
by Henrik Gedenryd 01 Nov '00

01 Nov '00

Duane Maxwell wrote: >> In English, Saturday and Sunday are called "Weekend". > > <pedant> > Ah, yes, but *which* end? If you start on Monday, then technically that > would be a weekend day too. > </pedant> pedant++: yes, but they would then be the respective ends of two different (consecutive) weeks, and it's not "Weekends". Yet another thread to prove the theorem that the length of a discussion is inversely proportional to the importance of the topic :-) Henrik

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Re: [Updates] RE: Happy Halloween
by Bob Arning 01 Nov '00

01 Nov '00

On 01 Nov 2000 08:57:20 -0800 merlyn(a)stonehenge.com (Randal L. Schwartz) wrote: >MorphicWorlds are still broken. Repeat by MVC "open ... MorphicWorld", >then move mouse within the world window. Randal, I'm not seeing any error here. Could you describe the error and a bit more about how you get it? Cheers, Bob

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RE: Event implementation
by Raab, Andreas 01 Nov '00

01 Nov '00

Marcel, > > [*] The exact semantics for what to report on key down/key up > > haven't been figured out yet. My current take is to simply use > > the X11 key definitions > > How about Unicode? We are talking about specific keyboard keys here. Key up/down events report keys the user presses on a particular keyboard. I don't think Unicode has a representation for the left and the right shift key... and that's why we can live without key down/up events (right now they're unused) but not without the character events. The OS does the mapping for us from the key code[s] into the actual characters (e.g., when you use some of those multi-key combination characters such as accents on certain keyboards) so we don't have to know about these mappings at the Squeak level but can still respond to whatever we find a good idea (I love the "ctrl" key as fire button). Eventually, this could even be used to map arbitrarily strange keyboards into Squeak or to define your own keyboards (some people ARE crazy...) > One more thing, I just checked the Windows VM sources, and I don't > see the input-event semaphore actually being used except as a > flag -- no signaling. I currently signal it whenever an event has arrived. To no good use. The semaphore is provided for two reasons: #1 - indicating to the VM that we want to use the event driven primitive set. #2 - For TRULY asynchronous event notification mechanisms. E.g., if you would run the event processing loop in a different thread than Squeak that is the semaphore to signal. For now, this signaling actually hurts more than it helps (the explanation takes a bit of time so I skip it for now) but it's not too bad if your machine is fast enough. BTW, if you've been digging in my sources, please notice that there's a call to ioProcessEvents() in ioGetNextEvent(). That call is IMPORTANT - if you leave it out you will get an arbitrarily sluggish behavior. - Andreas

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Re: Squeak 2.7 on iPAQ
by Sven Crouse 01 Nov '00

01 Nov '00

Could anyone elaborate on the differences between an implementation of Squeak directly to the hardware ( referred to somewhere as a "language kernel" ) and an implementation of Squeak on top of the Linux kernel accessing the framebuffer? Is anyone working on either of these implementations? Thanks. Sven Alan Kay wrote: > Good work! > > This is a good platform to start experimenting with. > > An interesting question is whether it is really worthwhile to do the > port via WinCE, as opposed to Linux (which I've heard is also > available on the iPAQ), or even to try a bare port. Tim Rowledge has > done quite a bit with ARMs, so he might have good advice here. Also, > Jamie Robertson at Disney has done a bare port to the Intel StrongArm > 1110a kit, that seems to work pretty well. > > Cheers, > > Alan > > ----- > > At 6:08 PM +0100 10/29/00, Jörn Eyrich wrote: > >Okay, I got a bit sidetracked here when I discovered that there are > >already ports for a C64 emulator and MAME available for the iPAQ ;-) > >(playing with this 4-way-pad doesn't work all that well, by the way, > >in my opinion) > > > >However, thanks to the work Yasuhiro Kurahara and Thomas Nelson did > >for the Jornadas, I was able to get an ARM Debug version of the 2.7 > >WinCE VM running on the iPAQ 36xx. It is about 480K and does about > >3,8 Mbytecodes/s, 191 Ksends/s on "0 tinyBenchmarks". > >I use a 760K image obtained by "Smalltalk majorShrink; > >abandonSources; lastRemoval" > > > >The problems I encounter are: > >- part of the squeak window is hidden under the WinCE menu bar (also > >noted by Yasuhiro Kurahara) > >- sometimes the squeak window is not redrawn > >- I can't get to the right button menu > >- I don't know how to emulate the "Alt" modifier key (these last two > >items conspire to make it impossible for me to do a simple doIt) > >- I can't see any new browsers or workspaces that I open (though > >they appear in the list after i do "find windows...") > >- collapsed windows don't have a title (only close and maximize > >icons seperated by free space) > >- moving/collapsing windows seems to break sometimes, then while > >trying to open the debugger, there seems to be another problem so I > >get a walkback that ranges from a "ZeroDivide" at the bottom of the > >screen through a "Fraction>>dNU" to a "MNU: bitAnd:" at the top, but > >unfortunately ... > >- ... I can't find a SqueakDebug.log containing the whole story > >(- after that you have 2MB RAM less available, but I guess that's > >WinCE for you) > > > >Next thing is trying to do the same for Andreas Raab's latest > >(pre-2.8)sources. > > > >Joern

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RE: Swiki.net vs. Comanche ?
by spair＠advantive.com 01 Nov '00

01 Nov '00

We are considering when and how to release a lot of the code in Swiki.net...there is a lot of stuff in there that is generally useful. We've also talked with the guys working on Swazoo/Aida...probably, our first step will be to organize our stuff and get it out...then we can begin to think about other issues. In the meantime, I've attached links to the 2 page extended abstract and the powerpoint presentation that I gave...in the demo, I actually had a lot of material that was presented directly in Squeak, but it's kind of meaningless without explanation. Here are the links: http://spair.swiki.net/.uploads/oopsla00/NetUnify_OOPSLA00.ppt http://spair.swiki.net/.uploads/oopsla00/NetUnifyExtendedAbstract.pdf - Stephen > -----Original Message----- > From: Ian Trudel [mailto:ian.trudel@tr.cgocable.ca] > Sent: Saturday, October 28, 2000 9:27 AM > To: squeak(a)cs.uiuc.edu > Subject: Re: Swiki.net vs. Comanche ? > > > > It would be nice to see a transcript, slides or something from Stephen's > > demonstration at OOPSLA. > > Tuesday 4:15 pm - 5:00 pm, Wednesday 4:15 pm - 5:00 pm > > 18. Implementing NetUnify.com Using Squeak as an App Server > > Stephen Pair, NetUnify.com > > Yes, it'd be very nice! ::) > > ---------------------------------------------------------------- > *squeak* *squeak* said the little mouse while eating a Java hog. > Ian Trudel, mailto:ian.trudel@tr.cgocable.ca >

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[Updates] RE: Happy Halloween
by Dan Ingalls 01 Nov '00

01 Nov '00

>On Wed, 1 Nov 2000 11:29:01 +0100 Torsten.Bergmann(a)phaidros.com wrote: >>After getting the latest 100 updates I had problems to create and enter >>a new morphic project. >> >>It crashes in Project>>makeThumbnail since it sends #displayWorldSafely >>to the variable world (which is an instance of class ControlManager) >>After updating there is no implementor of #displayWorldSafely anymore. >> >>I compared this to an 2.8 image. The method #displayWorldSafely was >>formerly implemented by PasteUpMorph. Bob Arning replied... >The message is still implemented in my image, but you are right that it does cause >an error here. A fix is enclosed below. I'll ask Dan to put it in the update stream. It's now out in the update stream. Thanks for the alert and the fix. - Dan

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Re: [BUG][FIX] RE: [updates] Happy Halloween
by Kevin Fisher 01 Nov '00

01 Nov '00

Actually funny you should mention that...I submitted some Celeste enhancements some time ago that added just such an option (an extra button on the compose window, actually... "send now" and "queue for sending later"). :) > > On Wed, 1 Nov 2000, Bob Arning wrote: > > > The message is still implemented in my image, but you are right that > > it does cause an error here. A fix is enclosed below. I'll ask Dan to > > put it in the update stream. > > You know, I "sent this changeset to list" with the same fix a couple of > hours ago. Wondering why it didn't make it, I tried again, and only then I > remembered that one has to explicitely "send queued mail" in Celeste ... > > Maybe it would be better for the occasional Celeste user (like me) to have > it not defer sending by default? Maybe by popping up a menu "Send now or > queue"? > > -- Bert >

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