Squeak-dev July 2010

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234 discussions

The Trunk: Tools-topa.246.mcz
by commits＠source.squeak.org 22 Jul '10

22 Jul '10

Levente Uzonyi uploaded a new version of Tools to project The Trunk: http://source.squeak.org/trunk/Tools-topa.246.mcz ==================== Summary ==================== Name: Tools-topa.246 Author: topa Time: 14 July 2010, 5:31:19.972 pm UUID: 8d12ad18-0b3c-46bd-becc-8ca3344ad715 Ancestors: Tools-cmm.245 There is a check for possibly corrupt sources when viewing a message. Now, this allows for different parser classes for the selected class used in the metaclass and the non-metaclass. =============== Diff against Tools-cmm.245 =============== Item was added: + ----- Method: CodeHolder>>informPossiblyCorruptSource (in category 'misc') ----- + informPossiblyCorruptSource + + | sourcesName | + sourcesName := FileDirectory localNameFor: SmalltalkImage current sourcesName. + self inform: 'There may be a problem with your sources file!! + + The source code for every method should (usually) start with the + method selector but this is not the case with this method!! You may + proceed with caution but it is recommended that you get a new source file. + + This can happen if you download the "' , sourcesName , '" file, + or the ".changes" file you use, as TEXT. It must be transfered + in BINARY mode, even if it looks like a text file, + to preserve the CR line ends. + + Mac users: This may have been caused by Stuffit Expander. + To prevent the files above to be converted to Mac line ends + when they are expanded, do this: Start the program, then + from Preferences... in the File menu, choose the Cross + Platform panel, then select "Never" and press OK. + Then expand the compressed archive again. + + (Occasionally, the source code for a method may legitimately + start with a non-alphabetic character -- for example, Behavior + method #formalHeaderPartsFor:. In such rare cases, you can + happily disregard this warning.)'! Item was added: + ----- Method: CodeHolder>>validateMessageSource:forSelector:inClass: (in category 'message list') ----- + validateMessageSource: sourceString forSelector: aSelector inClass: theClass + "Check whether there is evidence that method source is invalid" + + (theClass parserClass new parseSelector: sourceString asString) = aSelector + ifFalse: [self informPossiblyCorruptSource].! Item was changed: ----- Method: CodeHolder>>sourceStringPrettifiedAndDiffed (in category 'message list') ----- sourceStringPrettifiedAndDiffed "Answer a copy of the source code for the selected message, transformed by diffing and pretty-printing exigencies" | class selector sourceString | class := self selectedClassOrMetaClass. selector := self selectedMessageName. (class isNil or: [selector isNil]) ifTrue: [^'missing']. sourceString := class ultimateSourceCodeAt: selector ifAbsent: [^'error']. + self validateMessageSource: sourceString forSelector: selector inClass: class. - self validateMessageSource: sourceString forSelector: selector. (#(#prettyPrint #prettyDiffs) includes: contentsSymbol) ifTrue: [sourceString := class prettyPrinterClass format: sourceString in: class notifying: nil]. self showingAnyKindOfDiffs ifTrue: [sourceString := self diffFromPriorSourceFor: sourceString]. ^sourceString! Item was removed: - ----- Method: CodeHolder>>validateMessageSource:forSelector: (in category 'message list') ----- - validateMessageSource: sourceString forSelector: aSelector - "Check whether there is evidence that method source is invalid" - - | sourcesName | - (self selectedClass parserClass new parseSelector: sourceString asString) = aSelector - ifFalse: [sourcesName := FileDirectory localNameFor: SmalltalkImage current sourcesName. - self inform: 'There may be a problem with your sources file!! - - The source code for every method should (usually) start with the - method selector but this is not the case with this method!! You may - proceed with caution but it is recommended that you get a new source file. - - This can happen if you download the "' , sourcesName , '" file, - or the ".changes" file you use, as TEXT. It must be transfered - in BINARY mode, even if it looks like a text file, - to preserve the CR line ends. - - Mac users: This may have been caused by Stuffit Expander. - To prevent the files above to be converted to Mac line ends - when they are expanded, do this: Start the program, then - from Preferences... in the File menu, choose the Cross - Platform panel, then select "Never" and press OK. - Then expand the compressed archive again. - - (Occasionally, the source code for a method may legitimately - start with a non-alphabetic character -- for example, Behavior - method #formalHeaderPartsFor:. In such rare cases, you can - happily disregard this warning.)'].!

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The Trunk: Tools-ul.254.mcz
by commits＠source.squeak.org 22 Jul '10

22 Jul '10

Levente Uzonyi uploaded a new version of Tools to project The Trunk: http://source.squeak.org/trunk/Tools-ul.254.mcz ==================== Summary ==================== Name: Tools-ul.254 Author: ul Time: 22 July 2010, 4:48:03.666 am UUID: 121fcb55-f89d-6c48-aff7-ea6ca051e747 Ancestors: Tools-eem.253, Tools-topa.246 Merged. =============== Diff against Tools-eem.253 =============== Item was added: + ----- Method: CodeHolder>>informPossiblyCorruptSource (in category 'misc') ----- + informPossiblyCorruptSource + + | sourcesName | + sourcesName := FileDirectory localNameFor: SmalltalkImage current sourcesName. + self inform: 'There may be a problem with your sources file!! + + The source code for every method should (usually) start with the + method selector but this is not the case with this method!! You may + proceed with caution but it is recommended that you get a new source file. + + This can happen if you download the "' , sourcesName , '" file, + or the ".changes" file you use, as TEXT. It must be transfered + in BINARY mode, even if it looks like a text file, + to preserve the CR line ends. + + Mac users: This may have been caused by Stuffit Expander. + To prevent the files above to be converted to Mac line ends + when they are expanded, do this: Start the program, then + from Preferences... in the File menu, choose the Cross + Platform panel, then select "Never" and press OK. + Then expand the compressed archive again. + + (Occasionally, the source code for a method may legitimately + start with a non-alphabetic character -- for example, Behavior + method #formalHeaderPartsFor:. In such rare cases, you can + happily disregard this warning.)'! Item was added: + ----- Method: CodeHolder>>validateMessageSource:forSelector:inClass: (in category 'message list') ----- + validateMessageSource: sourceString forSelector: aSelector inClass: theClass + "Check whether there is evidence that method source is invalid" + + (theClass parserClass new parseSelector: sourceString asString) = aSelector + ifFalse: [self informPossiblyCorruptSource].! Item was changed: ----- Method: CodeHolder>>sourceStringPrettifiedAndDiffed (in category 'message list') ----- sourceStringPrettifiedAndDiffed "Answer a copy of the source code for the selected message, transformed by diffing and pretty-printing exigencies" | class selector sourceString | class := self selectedClassOrMetaClass. selector := self selectedMessageName. (class isNil or: [selector isNil]) ifTrue: [^'missing']. sourceString := class ultimateSourceCodeAt: selector ifAbsent: [^'error']. + self validateMessageSource: sourceString forSelector: selector inClass: class. - self validateMessageSource: sourceString forSelector: selector. (#(#prettyPrint #prettyDiffs) includes: contentsSymbol) ifTrue: [sourceString := class prettyPrinterClass format: sourceString in: class notifying: nil]. self showingAnyKindOfDiffs ifTrue: [sourceString := self diffFromPriorSourceFor: sourceString]. ^sourceString! Item was removed: - ----- Method: CodeHolder>>validateMessageSource:forSelector: (in category 'message list') ----- - validateMessageSource: sourceString forSelector: aSelector - "Check whether there is evidence that method source is invalid" - - | sourcesName | - (self selectedClass parserClass new parseSelector: sourceString asString) = aSelector - ifFalse: [sourcesName := FileDirectory localNameFor: SmalltalkImage current sourcesName. - self inform: 'There may be a problem with your sources file!! - - The source code for every method should (usually) start with the - method selector but this is not the case with this method!! You may - proceed with caution but it is recommended that you get a new source file. - - This can happen if you download the "' , sourcesName , '" file, - or the ".changes" file you use, as TEXT. It must be transfered - in BINARY mode, even if it looks like a text file, - to preserve the CR line ends. - - Mac users: This may have been caused by Stuffit Expander. - To prevent the files above to be converted to Mac line ends - when they are expanded, do this: Start the program, then - from Preferences... in the File menu, choose the Cross - Platform panel, then select "Never" and press OK. - Then expand the compressed archive again. - - (Occasionally, the source code for a method may legitimately - start with a non-alphabetic character -- for example, Behavior - method #formalHeaderPartsFor:. In such rare cases, you can - happily disregard this warning.)'].!

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The Trunk: Morphic-ul.454.mcz
by commits＠source.squeak.org 22 Jul '10

22 Jul '10

Levente Uzonyi uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-ul.454.mcz ==================== Summary ==================== Name: Morphic-ul.454 Author: ul Time: 22 July 2010, 4:36:40.557 am UUID: 809d8126-c77f-0943-afe3-86cacfcd897b Ancestors: Morphic-cmm.453 Updated an example in the class comment of SimpleButtonMorph to send #beep to Beeper instead of Smalltalk which doesn't work. Thanks to Enrico Spinielli for the report. =============== Diff against Morphic-cmm.453 =============== Item was changed: RectangleMorph subclass: #SimpleButtonMorph instanceVariableNames: 'target actionSelector arguments actWhen oldColor mouseDownTime' classVariableNames: '' poolDictionaries: '' category: 'Morphic-Widgets'! + !SimpleButtonMorph commentStamp: 'ul 7/22/2010 04:30' prior: 0! - !SimpleButtonMorph commentStamp: 'efc 3/7/2003 17:46' prior: 0! I am labeled, rectangular morph which allows the user to click me. I can be configured to send my "target" the message "actionSelector" with "arguments" when I am clicked. I may have a label, implemented as a StringMorph. Example: SimpleButtonMorph new + target: Beeper; - target: Smalltalk; label: 'Beep!!'; actionSelector: #beep; openInWorld Structure: instance var Type Description target Object The Object to notify upon a click actionSelector Symbol The message to send to Target (#messageName) arguments Array Arguments to send with #actionSelection (optional) actWhen Symbol When to take action: may be #buttonUp (default), #buttonDown, #whilePressed, or #startDrag oldColor Color Used to restore color after click Another example: a button which quits the image without saving it. SimpleButtonMorph new target: Smalltalk; label: 'quit'; actionSelector: #snapshot:andQuit:; arguments: (Array with: false with: true); openInWorld !

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Re: Fwd: RE: Where is Seaside download???
by Chris Cunnington 22 Jul '10

22 Jul '10

Well, I was thinking of having the Comanche adaptor be visible when the Seaside Control Panel was opened. But the idea you just had of having a server adaptor already running when they open the image is probably the best. Then we could just tell them to go to http://localhost:8080. Easy as pie. Chris

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Re: Fwd: RE: Where is Seaside download???
by Chris Cunnington 21 Jul '10

21 Jul '10

If I could make a suggestion, please pre-populate the Seaside Control Panel with a server adaptor. A blank field would require an option+click and then "Add adaptor...", which isn't really intuitive, if there's nothing to look at. Chris

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Using FFI on MacOSX
by Nicolas Cellier 21 Jul '10

21 Jul '10

Its not obvious for a Mac newbie like me to get FFI running on MacOSX. What I (re?) discovered is below. Please correct me if I'm wrong. To vm maintainers : wouldn't it be a good idea to pass the flag ffiLoad to ioLoadModule() instead of relying only on a single global variable whether it is a plugin that is requested or not ? This way we could have both secured/fast plugin loading and opened FFI (if distributed in the bundle). Unless there are other reasons unknown of me... Nicolas ----------------------------------------------------- Ah, some news! In order to track and debug the problem with FFI, I built a VM. (uneasy because latest svn xcodeproj is not exactly configured for a one click build...). The problem is that most vm are configured to search for plugin only in squeak bundle (global variable gSqueakPluginsBuiltInOrLocalOnly in files sqMain.c and sqMacUnixExternalPrims.c) I guess this is to save time at startup (and batteries for iPhone...) And also to get some more secure VM (can't load an invalid plugin from an older squeak vm). Unfortunately, no difference is made between loading a squeak plugin and loading a FFI library... There is a ffiLoad flag passed to findAndLoadModule() in sqNamedPrims.c but not to subfunction ioLoadModule() in sqMacUnixExternalPrims.c... (a mistake IMHO) So this setting is preventing FFI to work. What you should do is change this setting: - select your squeak vm in the finder. - Then choose a menu item like "display package content" (it's a guess, my version is configured in french). - Then edit the contents/info.plist with a property editor. - Then uncheck the box corresponding to SqueakPluginsBuiltInOrLocalOnly and save properties Then FFI should be operational again... (But Smallapack may well crash, at least that's what happens here...) I think I will CC squeak-dev/vm-dev to check If I this is the expected solution. Nicolas

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FreeBSD's lang/squeak port broken: missing files
by Frank Shearar 21 Jul '10

21 Jul '10

Hi there, FreeBSD's lang/squeak port installed Squeak 3.9 (I know: from the dark ages). Attempting to install it fails because the portinstaller can't download SqueakV3.sources.gz. Here's the output of the failure: ===> Vulnerability check disabled, database not found ===> License check disabled, port has not defined LICENSE ===> Found saved configuration for squeak-3.9_2 => Squeak-3.9-7.src.tar.gz doesn't seem to exist in /usr/ports/distfiles/squeak. => Attempting to fetch from http://www.squeakvm.org/unix/release/. Squeak-3.9-7.src.tar.gz 100% of 3855 kB 76 kBps 00m00s => Squeak3.9-final-7067.zip doesn't seem to exist in /usr/ports/distfiles/squeak. => Attempting to fetch from http://www.squeakvm.org/unix/release/. fetch: http://www.squeakvm.org/unix/release/Squeak3.9-final-7067.zip: Not Found => Attempting to fetch from http://ftp.squeak.org/3.9/. Squeak3.9-final-7067.zip 100% of 11 MB 137 kBps 00m00s => SqueakV3.sources.gz doesn't seem to exist in /usr/ports/distfiles/squeak. => Attempting to fetch from http://www.squeakvm.org/unix/release/. fetch: http://www.squeakvm.org/unix/release/SqueakV3.sources.gz: size mismatch: expected 3476504, actual 3427135 => Attempting to fetch from http://ftp.squeak.org/3.9/. fetch: http://ftp.squeak.org/3.9/SqueakV3.sources.gz: Not Found => Attempting to fetch from http://ftp.squeak.org/3.9/unix-linux/. fetch: http://ftp.squeak.org/3.9/unix-linux/SqueakV3.sources.gz: Not Found => Attempting to fetch from ftp://st.cs.uiuc.edu/Smalltalk/Squeak/3.9/. fetch: ftp://st.cs.uiuc.edu/Smalltalk/Squeak/3.9/SqueakV3.sources.gz: Operation timed out => Attempting to fetch from ftp://st.cs.uiuc.edu/Smalltalk/Squeak/3.9/unix-linux/. fetch: ftp://st.cs.uiuc.edu/Smalltalk/Squeak/3.9/unix-linux/SqueakV3.sources.gz: Operation timed out => Attempting to fetch from ftp://ftp.cs.uni-magdeburg.de/pub/Smalltalk/Smalltalk/Squeak/3.9/. fetch: ftp://ftp.cs.uni-magdeburg.de/pub/Smalltalk/Smalltalk/Squeak/3.9/SqueakV3.sources.gz: No address record => Attempting to fetch from ftp://ftp.cs.uni-magdeburg.de/pub/Smalltalk/Smalltalk/Squeak/3.9/unix-linux/. fetch: ftp://ftp.cs.uni-magdeburg.de/pub/Smalltalk/Smalltalk/Squeak/3.9/unix-linux/SqueakV3.sources.gz: No address record => Attempting to fetch from ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/distfiles/squeak/. fetch: transfer timed out fetch: SqueakV3.sources.gz appears to be truncated: 0/3476504 bytes ** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portinstall20100721-31040-1vn7lwe-0 env make ** Fix the problem and try again. ** Listing the failed packages (-:ignored / *:skipped / !:failed) ! lang/squeak (unknown build error) To fix this, either the port maintainer needs to add a new URL from which to download the file, or an admin for one of the above machines needs to put the file in one of the above-mentioned places. frank

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Cog VM Logo Animation
by Daniel Lanovaz 21 Jul '10

21 Jul '10

I dusted off a Cog VM logo animation I created some time ago. See the Cog entry here: http://daniel.lanovaz.org I just noticed Eliot's June 20th post; I'm a little behind on my reading. Great work Eliot. Regards, Daniel Lanovaz http://daniel.lanovaz.org/Site/Blog/Entries/2010/7/16_Cog.html http://daniel.lanovaz.org/Cog/Reveal1.html

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UI lockup in Squeak 4.1
by Rob Withers 21 Jul '10

21 Jul '10

All, I am running Squeak 4.1 with Squeak4.0.2.exe VM on Windows. I downloaded it from squeak.org 2 days ago. I have loaded Cryptography, SSL, and SqueakElib. I am running SqueakElib as a server. My first indication of a problem is that the CPU goes to 100% and stays there. Squeak is uninterruptable with <alt>-. Windows Task Manager shows tat the problem is with Squeak. I opened the ProcessBrowser and turned on the CPUWatcher and ran the system. When the problem occurs, after awhile the VM exits having run out of memory. The crash.log says that the CPUWatcher was trying to catchThePig and it was instantiating an Exception but failed due to no memory. (There were 10 or so iterations of instantiating an exception). So I then went through all the SqueakElib code and made sure all Processes were being created with userBackgroundPriority, so I could interrupt them if they were the problem. I reran and reproduced the problem of the CPU going to 100%. It remained uninterruptable. However, after hitting <alt>-. about 20-30 times, the CPU usage went to 0%. Squeak remained uninterruptable. After trying to manipulate windows, I started getting the debug window at the bottom of the Squeak window and it said over and over: WARNING: event buffer overflow This occurs with mouseMove. Anyone seen this behavior? Anyone have any ideas on what is wrong, or what I can do to debug further? Given the last situation, I am thinking this is NOT a SqueakElib problem. Thanks, Rob ----

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Headless Linux squeak running max cpu
by Rob Withers 20 Jul '10

20 Jul '10

I start the image with the following command: setsid bin/squeak -vm-display-null -vm-sound-null echat-server.image introducer.sq & which runs it as a daemon, turns off display and sound, and runs a small script that starts a listening socket. The output from top, after running a few minutes, is PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 12557 vawhigso 20 0 1036m 42m 1276 S 23.4 0.3 0:28.32 squeak There are 8 cpus, so we are getting time on more than one cpu. Memory has grown from 0.2 to 0.3 but doesn't seem to be growing ridiculously. At some point in time (several hours, I believe), squeak is no longer running. I do not know if this is because it runs out of memory, some other internal exit, or the webhost kills it. It looks like it is infinitely looping, but not grabbing memory. I expect it to idle at extremely low cpu. What kinds of debugging tools can I use to see what it is doing? Thanks, Rob

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