Squeak-dev April 2008

squeak-dev@lists.squeakfoundation.org

146 participants
187 discussions

SqueakPeople move to DabbleDB ?
by karl 29 Apr '08

29 Apr '08

I saw a nice demo of DabbleDB, browsed their site and noticed that they are offering free service. Since nobody want to touch SqueakPeople code (implemented in C) I thought DabbleDB could be cool, maybe. Is there stuff in SqueakPeople that DabbleDB won't handle ? Karl

8 11

PlusTools and Tweak
by David Faught 29 Apr '08

29 Apr '08

Hi, I'm a little confused. I'm toying with PlusTools, which is based on ToolBuilder, which should make them a common, UI-independent set of development tools. Ideally, the PlusTools would work the same under MVC, Morphic, and Tweak. But I see many things in PlusTools that reference an instance of SystemNavigation, which appears to be largely oriented to Morphic. If I were serious about pursuing this avenue, should I be removing references to systemNavigation from PlusTools (and replacing with what?), or should I be changing SystemNavigation to be more independent of Morphic and work better with PlusTools? Is there a more UI-independent version of the functions provided by SystemNavigation somewhere else that I'm missing, or is that really what I should be developing? Thanks for your input. Dave

2 1

How to build squeak VM on amd64?
by Matej Kosik 29 Apr '08

29 Apr '08

Friends, I maintain these Debian repositories: http://wiki.squeak.org/squeak/3616 There are binary packages for i386 which work fine. I am trying to build similar binary packages for amd64 architecture. This is motivated by recent "Squeak Debian Amd64 package" threat on this list. I am having troubles to understand how to do that (I am getting old and stupid, I guess) and seeking some help. First, I need the source. It is available: http://www.squeakvm.org/index.html http://www.squeakvm.org/squeak64/ http://squeakvm.org/squeak64/dist3/ http://squeakvm.org/squeak64/dist3/Squeak-3.8a-2.src.tar.gz The mentioned Squeak VM version seemed to be slightly older than than latest one visible here: http://www.squeakvm.org/unix/ http://www.squeakvm.org/unix/release/Squeak-3.10-1.src.tar.gz I presume that newer is better. So I am trying Squeak-3.10-1.src.tar.gz wget http://www.squeakvm.org/unix/release/Squeak-3.10-1.src.tar.gz tar xvzf Squeak-3.10-1.src.tar.gz The top-level README tells how to install Squeak if I have a root account but *I do not have root acount*. So I must try something different. Here: http://www.squeakvm.org/squeak64/ are described other procedures that can be modified to install squeak to my home dir. mkdir bld cd bld ../platforms/unix/config/configure --with-src=src32 --prefix=/home/kosik (Is it expected to work?) Directories ~/bin and ~/lib exist, so the above command should have sense. Here is its output http://altair.sk/uploads/tmp/1.txt There is one warning: config.status: WARNING: ../platforms/unix/config/make.cfg.in seems to ignore the --datarootdir setting What does it mean? If I try to go on, I get this error http://altair.sk/uploads/tmp/2.txt /bin/sh /home/kosik/work/debian/etch/squeak/Squeak-3.10-1/bld/libtool --mode=link gcc -g -O2 -DLSB_FIRST=1 -export-dynamic -R/home/kosik/lib -o squeak vm/vm.a B2DPlugin/B2DPlugin.a BitBltPlugin/BitBltPlugin.a FilePlugin/FilePlugin.a SocketPlugin/SocketPlugin.a disabledPlugins.o version.o -lutil -ldl -lm -lnsl vm/vm.a gcc -g -O2 -DLSB_FIRST=1 -o squeak disabledPlugins.o version.o -Wl,--export-dynamic vm/vm.a B2DPlugin/B2DPlugin.a BitBltPlugin/BitBltPlugin.a FilePlugin/FilePlugin.a SocketPlugin/SocketPlugin.a -lutil -ldl -lm -lnsl vm/vm.a -Wl,--rpath -Wl,/home/kosik/lib vm/vm.a(sqVirtualMachine.o): In function `sqGetInterpreterProxy': /home/kosik/work/debian/etch/squeak/Squeak-3.10-1/platforms/Cross/vm/sqVirtualMachine.c:202: undefined reference to `obsoleteDontUseThisFetchWordofObject' /home/kosik/work/debian/etch/squeak/Squeak-3.10-1/platforms/Cross/vm/sqVirtualMachine.c:333: undefined reference to `fetchLong32ofObject' /home/kosik/work/debian/etch/squeak/Squeak-3.10-1/platforms/Cross/vm/sqVirtualMachine.c:334: undefined reference to `getThisSessionID' /home/kosik/work/debian/etch/squeak/Squeak-3.10-1/platforms/Cross/vm/sqVirtualMachine.c:335: undefined reference to `ioFilenamefromStringofLengthresolveAliases' /home/kosik/work/debian/etch/squeak/Squeak-3.10-1/platforms/Cross/vm/sqVirtualMachine.c:336: undefined reference to `vmEndianness' collect2: ld returned 1 exit status make: *** [squeak] Error 1 So, I did not succeeded here. For curiousity, I have tried to look at the 64-bit version images. So I have tried to build VM as follows: ../platforms/unix/config/configure --with-src=src64 --prefix=/home/kosik The configuration yields the same warning and building ends with the same error. So I am trying also the old way (plus the --prefix, no --with-src) ../platforms/unix/config/configure --prefix=/home/kosik make make install I do not notice any failure this far. Squeak binary is installed in my ~/bin directory. There is /home/kosik/lib/squeak/ directory with the following contents /home/kosik/lib/squeak/ /home/kosik/lib/squeak/3.10-1 /home/kosik/lib/squeak/3.10-1/B3DAcceleratorPlugin /home/kosik/lib/squeak/3.10-1/XDisplayControlPlugin /home/kosik/lib/squeak/3.10-1/vm-sound-null /home/kosik/lib/squeak/3.10-1/squeak /home/kosik/lib/squeak/3.10-1/vm-display-null /home/kosik/lib/squeak/3.10-1/PseudoTTYPlugin /home/kosik/lib/squeak/3.10-1/npsqueak.so /home/kosik/lib/squeak/3.10-1/VideoForLinuxPlugin /home/kosik/lib/squeak/3.10-1/Squeak3D /home/kosik/lib/squeak/3.10-1/vm-display-fbdev /home/kosik/lib/squeak/3.10-1/vm-display-X11 /home/kosik/lib/squeak/3.10-1/UnixOSProcessPlugin /home/kosik/lib/squeak/npsqueakregister /home/kosik/lib/squeak/npsqueakrun I am slightly puzzled what kind of image (32-bit or 64-bit) I need since I did not specified it --with-src. What is the default? If I try 64-bit image downloaded from here: http://squeakvm.org/squeak64/dist3/Squeak64-3.8g-6548.image.tar.gz squeak Squeak64-3.8g-6548.image I get this message: could not find display driver vm-display-X11; either: - check that /home/kosik/lib/squeak/3.10-1/vm-display-X11.so exists, or - use the '-plugins <path>' option to tell me where it is, or - remove DISPLAY from your environment. Aborted One puzzling thing is that `make install' generated /home/kosik/lib/squeak/3.10-1/vm-display-X11 but the binary requires /home/kosik/lib/squeak/3.10-1/vm-display-X11.so This is slightly confusing. This squeak -plugins /home/kosik/lib/squeak/3.10-1 Squeak64-3.8g-6548.image does not help either. I am logged in remotely, but I can start normal X applications (such as xclock) so this should not be the problem. However has experience with this and can help, I would be grateful. Thanks in advance.

4 6

How do I debug synchronization problems?
by Johan Björk 28 Apr '08

28 Apr '08

Hi everyone, First: sorry for the long email, I have no clue what is going on. Some background information: I'm running one client to a KomServices TcpService server in squeak 3.9 (MacOSX). I've been doing stresstesting on my server for a while, but previously I never tried to use Squeak at the same time. Today I started using the Process browser to debug another problem, (thanks gokr!) , and noticed that if I opened the Process browser when running a stresstest, I got the most obscure problems. Now to the problems: First off, I really have NO IDEA what is going on, nor how to debug this. so I'll just plainly state what I see happening, and then someone better then me might be able to explain this, and tell me what more information you guys need: Starting the process browser, MOST cases, instead of receiving a process browser window, I get a "random" error. "Random" a bit more specified: Mostly I get Syntax error errors, such as: ------------------------------------------ grimReaperProcess "This is a process which waits for the death of a child OSProcess, and informs any dependents of the change. Use SIGCHLD events if possible, otherwise a Delay to poll for exiting child processes." | event processSynchronizationDelay | ^ self canAccessSystem ifTrue: [event := (self canAccessSystem and: [self canForwardExternalSignals]) ifTrue: [self sigChldSemaphore] ifFalse: [Delay forMilliseconds: 200]. processSynchronizationDelay := Delay forMilliseconds: 20. grimReaper ifNil: [grimReaper Period or right bracket expected -> ------------------------------------------ parse: sourceStream class: class noPattern: noPattern context: ctxt notifying: req ifFail: aBlock Unmatched comment quote ->"Answer a MethodNode for the argument, sourceStream, that is the root of a parse tree. Parsing is done with respect to the argument, class, to find instance, class, and pool variables; and with respect to the argument, ctxt, to find temporary variables. Errors in parsing are r -------------------------------------------------------- I also sometimes receive messageNotUnderstood errors, (but I don't have any stacktrace for that, it seems the current image didn't have the HTML exporter installed, and I got other exceptions afterwards) for example: Parser>>parseError I guess I'm accessing some operation which I'm not allowed to concurrently. Since I don't know where I'm to look, I'll state some things I do and hopefully someone can point me in the right direction: Everything in my application is "singlethreaded" ie, it's only one concurrent connection. I'm NOT using Morphic I'm accessing the #Smalltalk to convert Symbols to classes. I'm using perform: on my own object I'm using instVarNames and classVarNames on about every object in the system I request sub and superclasses for about every object in the system I request sourcecode for both class and instance methods for about every object in the system (sourceCodeAt: #method) I'm never writing or changing anything, all my operations are "read only". Thanks in advance /Johan

1 1

Inconsistency in class hierarchy after installing RefactoringBrowser?
by Johan Björk 28 Apr '08

28 Apr '08

Hi guys, I recently installed the Refactoring browser, and now I'm seeing very strange things in my application. If I execute HierarchyBrowser superclass name. ->> #RefactoringBrowser Browser subclasses. ->> {FileContentsBrowser . PackagePaneBrowser . HierarchyBrowser . MessageSet . RefactoringBrowser} Ie, HierarchyBrowser is a subclass of RefactoringBrowser But it's also a subclass of Browser! The same effect is visible if you look at "Hierarchy" in the browser. If you select Browser, you can see HierarchyBrowser as a subclass. If you however select HierarchyBrowser, it is then a subclass to RefactoringBrowser. Not sure if this is "wrong"? Ideas? Thanks in advance /Johan

1 0

Where can I find details on the Squeak image format?
by Robert Wierschke 28 Apr '08

28 Apr '08

Hi, where can I find detailed Information on the Squeak image format? As well as information on the difference between Squeak 2.2 and Squeak 3.9 (3.10) image formats. thanks in advance robert

9 12

Transcript broken in etoys-dev-2.3?
by Simon Guest 28 Apr '08

28 Apr '08

Hi, Using a freshly downloaded Etoys-dev-2.3 image, I open a workspace and type: Transcript nextPutAll: 'hello world'; cr. Nothing appears in the transcript window, either the existing one, or any I open as well. The text is visible if I inspect the transcript window morph, and look at the underlying model. But it does not get displayed in the window. What's up? cheers, Simon

2 2

Install on Debian / Ubuntu binary-amd64
by Edward Stow 27 Apr '08

27 Apr '08

Hi I'm having real problems installing squeak on my server environment - either a Debian etch or Unbuntu 7.10 , the machine is a 64 architecture. Neither the unbuntu multiverse or the http://ftp.squeak.org/debian/ repository have a working installable version of squeak. ubuntu binary-amd64 is missing the squeak-vm package, and the squeak repository does not have a binary-amd64 architecture package. I have tried to compile the vm but errors start with the /plugins/B3DAcceleratorPlugin/sqOpenGLRenderer.c:30: -- pretty sure that I dont have the libraries. Note I don't have X installed. Any suggestions on how to proceed ... apart from creating my own deb packages ... -- Edward Stow

9 28

Transcript window not showing transcript stream
by Simon Guest 27 Apr '08

27 Apr '08

Using etoys-dev-2.3, updated with code updates to 1896, my Transcript window is not showing the contents of the transcript stream. I can see these by inspecting the Transcript window, and looking at the underlying model. But why is it not appearing on the screen? The Transcript window remains completely empty. Any suggestions? cheers, Simon

1 1

Part II of my advocating article about Squeak/Smalltalk programing for education
by Hilaire Fernandes 27 Apr '08

27 Apr '08

In this series of articles, I will highlight the advantages of using Squeak/Smalltalk to develop educational software. At some point and based on my experience, I will compare with other development languages. The focus of this article is for educators and developers interested in software programming education applications. In these articles, don't expect to learn about Smalltalk/Squeak programming, my goal is simply to give an overall picture, based on real experience. Feedback is of course very welcome. In this article I will discuss about the Smalltalk image concept and its consequences. http://blog.ofset.org/hilaire/index.php?post/2008/04/24/Why-you-could-consi… -- http://blog.ofset.org/hilaire -- http://blog.ofset.org/hilaire

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