Squeak-dev February 2011

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The Trunk: Files-cmm.101.mcz
by commits＠source.squeak.org 25 Feb '11

25 Feb '11

Chris Muller uploaded a new version of Files to project The Trunk: http://source.squeak.org/trunk/Files-cmm.101.mcz ==================== Summary ==================== Name: Files-cmm.101 Author: cmm Time: 24 February 2011, 7:19:36.954 pm UUID: 3463cdfa-5a3c-4e33-8c70-22a5f5be61fa Ancestors: Files-cmm.100 Added conventional and necessary type-checking to new DirectoryEntry>>#=. =============== Diff against Files-cmm.100 =============== Item was changed: ----- Method: DirectoryEntry>>= (in category 'testing') ----- = aDirectoryEntry "Answer whether I am equivalent in all of my file-system attributes." + super = aDirectoryEntry ifTrue: [^ true]. + self species = aDirectoryEntry species ifFalse: [^ false]. ^ self containingDirectory = aDirectoryEntry containingDirectory and: [self name = aDirectoryEntry name and: [self modificationTime = aDirectoryEntry modificationTime and: [self fileSize = aDirectoryEntry fileSize]]]!

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MetacelloBrowser in Squeak 4.2 11042 trunk
by Ken G. Brown 25 Feb '11

25 Feb '11

Here are some load scripts to load MetacelloBrowser <http://metacellobrowser.dcc.uchile.cl/> and at least open it up in a fresh Squeak 4.2 11042 I do not know if it is working properly or not. If anyone has better load scripts, please let us know. When loading Grease I get this missing dependency error a few times: This package depends on the following classes: ParseTreeEnvironment RBTransformationRule RBBlockLintRule RBParseTreeLintRule I don't know where to get the missing stuff from at the moment or whether it would work in Squeak. I just clicked Proceed each time the error came up. Do each section by itself in a Workspace. "==================================" "Gofer" "Gofer is at 'http://source.lukas-renggli.ch/gofer', " "Gofer docs reside at http://www.lukas-renggli.ch/blog/gofer" (Installer repository: 'http://source.lukas-renggli.ch/gofer/') install: 'Gofer'; install: 'Gofer-Core'; install: 'Gofer-Tests'; yourself. "==================================" "Grease" (Installer repository: 'http://www.squeaksource.com/Seaside30/') install: 'Grease-Core'; install: 'Grease-Slime'; install: 'Grease-Tests-Core'; install: 'Grease-Tests-Slime'; install: 'ConfigurationOfGrease'; yourself. "===================================" "MetacelloBrowser" "http://metacellobrowser.dcc.uchile.cl/" Gofer new squeaksource: 'MetacelloBrowser'; package: 'ConfigurationOfMetacelloBrowser'; load. ((Smalltalk at: #ConfigurationOfMetacelloBrowser) project perform: #lastVersion) load. "===================================" MetacelloBrowser open. For your enjoyment, Ken G. Brown

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Daily Commit Log
by commits＠source.squeak.org 25 Feb '11

25 Feb '11

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2011-February/004306.h… Name: Collections-ul.427 Ancestors: Collections-ul.426 OrderedCollection tweaks: - optimized (bytecode + stack usage) #addFirst: and #addLast: - removed the #asInteger send from #at:put:, because no other operations use it - recategorized and commented #reset and #resetTo: =============================================

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Re: [squeak-dev] The Trunk: Collections-ul.427.mcz
by Nicolas Cellier 25 Feb '11

25 Feb '11

Of course, these are hardly whishable features, and I think it is good to get rid of #asInteger, but I was intrigued : (Array new: 100 withAll: 0) asOrderedCollection at: $A put: 1; at: '2+10' put: 3; yourself. -> try it by yourself before applying the change (OrderedCollection with: $a with: $b) at: 9/4 put: $c; yourself. before change -> #($a $c), after change -> error Though #($a $b) at: 9/4 still "works" (OrderedCollection with: $a with: $b) at: 7/4 put: $c; yourself. still "works" -> #($c $b) because Object>>#at:put: still use #asInteger... (only in case of a Number). I wonder why we shall let Object interpret our intentions (or bugs)... Isn't it time to change it too ? Nicolas 2011/2/24 <commits(a)source.squeak.org>: > Levente Uzonyi uploaded a new version of Collections to project The Trunk: > http://source.squeak.org/trunk/Collections-ul.427.mcz > > ==================== Summary ==================== > > Name: Collections-ul.427 > Author: ul > Time: 24 February 2011, 2:42:16.909 pm > UUID: 40a987b8-4024-9e45-bdb9-ac0b0b888ad2 > Ancestors: Collections-ul.426 > > OrderedCollection tweaks: > - optimized (bytecode + stack usage) #addFirst: and #addLast: > - removed the #asInteger send from #at:put:, because no other operations use it > - recategorized and commented #reset and #resetTo: > > =============== Diff against Collections-ul.426 =============== > > Item was changed: > ----- Method: OrderedCollection>>addFirst: (in category 'adding') ----- > addFirst: newObject > "Add newObject to the beginning of the receiver. Answer newObject." > > + firstIndex = 1 ifTrue: [ self makeRoomAtFirst ]. > + ^array at: (firstIndex := firstIndex - 1) put: newObject! > - firstIndex = 1 ifTrue: [self makeRoomAtFirst]. > - firstIndex := firstIndex - 1. > - array at: firstIndex put: newObject. > - ^ newObject! > > Item was changed: > ----- Method: OrderedCollection>>addLast: (in category 'adding') ----- > addLast: newObject > "Add newObject to the end of the receiver. Answer newObject." > > + array size = lastIndex ifTrue: [ self makeRoomAtLast ]. > + ^array at: (lastIndex := lastIndex + 1) put: newObject! > - lastIndex = array size ifTrue: [self makeRoomAtLast]. > - lastIndex := lastIndex + 1. > - array at: lastIndex put: newObject. > - ^ newObject! > > Item was changed: > ----- Method: OrderedCollection>>at:put: (in category 'accessing') ----- > at: anInteger put: anObject > "Put anObject at element index anInteger. at:put: cannot be used to > append, front or back, to an ordered collection; it is used by a > knowledgeable client to replace an element." > > + (anInteger < 1 or: [anInteger + firstIndex - 1 > lastIndex]) > - | index | > - index := anInteger asInteger. > - (index < 1 or: [index + firstIndex - 1 > lastIndex]) > ifTrue: [self errorNoSuchElement] > + ifFalse: [^array at: anInteger + firstIndex - 1 put: anObject]! > - ifFalse: [^array at: index + firstIndex - 1 put: anObject]! > > Item was changed: > + ----- Method: OrderedCollection>>reset (in category 'removing') ----- > - ----- Method: OrderedCollection>>reset (in category 'private') ----- > reset > + "Quickly remove all elements. The objects will be still referenced, but will not be accessible." > + > - > self resetTo: 1! > > Item was changed: > + ----- Method: OrderedCollection>>resetTo: (in category 'removing') ----- > - ----- Method: OrderedCollection>>resetTo: (in category 'private') ----- > resetTo: index > + "Quickly remove all elements. The objects will be still referenced, but will not be accessible. Also make sure that the first object will be inserted at index. Choosing the right value has had great impact on performance, but it's neglible with the current implementation, so it's better to use #reset instead in most cases." > + > firstIndex := index. > lastIndex := firstIndex - 1! > > >

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SqueakMap for documentation?
by Ken G. Brown 24 Feb '11

24 Feb '11

What would it take to get SqueakMap to work for documentation? Wouldn't it be nice if SqueakMap could become the first place to go to find documentation as well as program packages? Ken G. Brown

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VM Crash on Linux
by Jeff G 24 Feb '11

24 Feb '11

Hi Everyone, I wish I could give better information as to why this occurred, but I couldn't find a crash log file generated or anything similar. Any advice or suggestions that you have on how I can gather better information would be appreciated and I will follow up on them. I was working to save a few hours of work to a Monticello repository and when I clicked the "Save" button to bring up the commit message window the VM crashed dumping me back at the command line with this trace: sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented sound_Start(default) soundStart: snd_add_pcm_handler: Function not implemented I/O possible I am not sure why it was trying to play a sound, but it looks like that was the cause. This is the latest Cog VM taken from Eliot, r2361. Anyway, I was able to recover my changes so it wasn't a huge inconvenience, but I figured that I would report it because I had just worked past the UUID crash and I was feeling good about smalltalking on my linux box again and then this hit me. Thanks for your help, Jeff G.

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DBus bindings
by Gary Dunn 24 Feb '11

24 Feb '11

I am investigating ways to have Squeak respond nicely to user logoff or system shutdown on Unix hosts. Currently files are left open, triggering a file system integrity check on restart and the associated threat of image corruption or loss. I began at signals, good old SIGHUP and SIGQUIT, working in Gnome. Neither was suitable. Next I dug into gedit to see how it worked and found that Gnome uses its own signal library. Someone told me Gnome's library just traps DBus signals, so I looked into DBus and read that I should use one of the higher level bindings. And what did I find on the bindings page (www.freedesktop.org)? Bindings for Squeak by Bert Freudenberg! Can someone give me a 1-2-3 on how to incorporate the six mcz files on SqueakSource into a 4.2 image? I am a Monticello newbie. Anyone using them care to share their insights and experiences? (apologies if format is weird, I had to resend because original was sent from wrong account. ) Gary Dunn, Honolulu

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The Trunk: Collections-ul.427.mcz
by commits＠source.squeak.org 24 Feb '11

24 Feb '11

Levente Uzonyi uploaded a new version of Collections to project The Trunk: http://source.squeak.org/trunk/Collections-ul.427.mcz ==================== Summary ==================== Name: Collections-ul.427 Author: ul Time: 24 February 2011, 2:42:16.909 pm UUID: 40a987b8-4024-9e45-bdb9-ac0b0b888ad2 Ancestors: Collections-ul.426 OrderedCollection tweaks: - optimized (bytecode + stack usage) #addFirst: and #addLast: - removed the #asInteger send from #at:put:, because no other operations use it - recategorized and commented #reset and #resetTo: =============== Diff against Collections-ul.426 =============== Item was changed: ----- Method: OrderedCollection>>addFirst: (in category 'adding') ----- addFirst: newObject "Add newObject to the beginning of the receiver. Answer newObject." + firstIndex = 1 ifTrue: [ self makeRoomAtFirst ]. + ^array at: (firstIndex := firstIndex - 1) put: newObject! - firstIndex = 1 ifTrue: [self makeRoomAtFirst]. - firstIndex := firstIndex - 1. - array at: firstIndex put: newObject. - ^ newObject! Item was changed: ----- Method: OrderedCollection>>addLast: (in category 'adding') ----- addLast: newObject "Add newObject to the end of the receiver. Answer newObject." + array size = lastIndex ifTrue: [ self makeRoomAtLast ]. + ^array at: (lastIndex := lastIndex + 1) put: newObject! - lastIndex = array size ifTrue: [self makeRoomAtLast]. - lastIndex := lastIndex + 1. - array at: lastIndex put: newObject. - ^ newObject! Item was changed: ----- Method: OrderedCollection>>at:put: (in category 'accessing') ----- at: anInteger put: anObject "Put anObject at element index anInteger. at:put: cannot be used to append, front or back, to an ordered collection; it is used by a knowledgeable client to replace an element." + (anInteger < 1 or: [anInteger + firstIndex - 1 > lastIndex]) - | index | - index := anInteger asInteger. - (index < 1 or: [index + firstIndex - 1 > lastIndex]) ifTrue: [self errorNoSuchElement] + ifFalse: [^array at: anInteger + firstIndex - 1 put: anObject]! - ifFalse: [^array at: index + firstIndex - 1 put: anObject]! Item was changed: + ----- Method: OrderedCollection>>reset (in category 'removing') ----- - ----- Method: OrderedCollection>>reset (in category 'private') ----- reset + "Quickly remove all elements. The objects will be still referenced, but will not be accessible." + - self resetTo: 1! Item was changed: + ----- Method: OrderedCollection>>resetTo: (in category 'removing') ----- - ----- Method: OrderedCollection>>resetTo: (in category 'private') ----- resetTo: index + "Quickly remove all elements. The objects will be still referenced, but will not be accessible. Also make sure that the first object will be inserted at index. Choosing the right value has had great impact on performance, but it's neglible with the current implementation, so it's better to use #reset instead in most cases." + firstIndex := index. lastIndex := firstIndex - 1!

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Daily Commit Log
by commits＠source.squeak.org 24 Feb '11

24 Feb '11

Changes to Trunk (http://source.squeak.org/trunk.html) in the last 24 hours: http://lists.squeakfoundation.org/pipermail/packages/2011-February/004305.h… Name: Files-cmm.100 Ancestors: Files-ul.99 - DirectoryEntry's are very transient objects, so it makes sense for them to override #= and #hash, just like its brother, FileDirectory. - Also added localized splitNameVersionExtension. =============================================

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Re: [squeak-dev] DBus bindings
by Hans-Martin Mosner 23 Feb '11

23 Feb '11

I'm using the DBus bindings in a recording and CD burning app, and it works very well (this is a 3.9 image, though.) Thanks Bert for this nice and useful piece of work! Cheers, Hans-Martin Bert Freudenberg <bert(a)freudenbergs.de> schrieb: >On 23.02.2011, at 11:04, Gary Dunn wrote: > >> Someone told me Gnome's >> library just traps DBus signals, so I looked into DBus and read that I >> should use one of the higher level bindings. And what did I find on the >> bindings page (www.freedesktop.org)? Bindings for Squeak by Bert >> Freudenberg! >> >> Can someone give me a 1-2-3 on how to incorporate the six mcz files on >> SqueakSource into a 4.2 image? I am a Monticello newbie. Anyone using >> them care to share their insights and experiences? > >I have not tried this in a 4.x image, but in general you need to load DBus-Core first, then DBus-Objects. Those are the two you would need "in production". And of course the DBusPlugin in your VM directory. > >The only application I know using it is Etoys. If you run Etoys under Linux, just press ctrl-comma then open a DBus Explorer to peek around. To install that in your own image, load the DBus-Tools package. > >To call methods via DBus you get a proxy for it and send a message: > >proxy := DBus sessionBus getObject: 'org.gnome.ScreenSaver' path: '/'. >proxy SetActive: true > >Similarly to register for signals: > >proxy onDBusSignal: 'interface.member' send: #someSelector to: someObject > >To create a DBus service (make an object available via DBus), you subclass DBusObject and "export" it: > >DBus sessionBus export: myObject on: 'org.mydomain.myapp' at: '/path/to/my/object' > >That's basically it. You can find usage examples in the Etoys image. > >- Bert - >

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