Squeak-dev October 2010

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The Inbox: Monticello-bp.406.mcz
by commits＠source.squeak.org 31 Oct '10

31 Oct '10

A new version of Monticello was added to project The Inbox: http://source.squeak.org/inbox/Monticello-bp.406.mcz ==================== Summary ==================== Name: Monticello-bp.406 Author: bp Time: 31 October 2010, 4:38:59.454 pm UUID: 2bc8f189-09ca-4471-b0fe-89c70f4f379d Ancestors: Monticello-nice.405 added obsoletePackageInfos =============== Diff against Monticello-nice.405 =============== Item was added: + ----- Method: MCPackageManager class>>obsoletePackageInfos (in category 'cleanup') ----- + obsoletePackageInfos + "Answer all PackageInfos that are not associated with an MCPackageManager." + | pkgNames | + pkgNames := self allManagers collect: [:wcs | wcs packageName] as: Set. + ^PackageOrganizer default packages select: [:p | + p class isObsolete or: [(pkgNames includes: p packageName) not]]!

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Webclient + localhost error
by Sean P. DeNigris 31 Oct '10

31 Oct '10

When using WebClient, "WebClient httpGet: 'http://google.com'" succeeded, but "WebClient httpGet: 'http://localhost:8090'" reported "ConnectionTimedOut: Cannot connect to 127.0.0.1:8090" The address looked fine from Safari. What gives? Thanks. Sean Log: ConnectionTimedOut: Cannot connect to 127.0.0.1:8090 28 October 2010 6:23:58.673 pm VM: Mac OS - Smalltalk Image: Squeak4.1 [latest update: #9957] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /Users/sean/Squeak/Main Working Images/Squeak4.1 Trusted Dir /foobar/tooBar/forSqueak/bogus Untrusted Dir /Users/sean/Library/Preferences/Squeak/Internet/My Squeak [] in Socket>>connectTo:port:waitForConnectionFor: Receiver: a Socket[unconnected] Arguments and temporary variables: <<error during printing> Receiver's instance variables: semaphore: a Semaphore() socketHandle: #[52 74 202 76 0 0 0 0 64 114 35 0] readSemaphore: a Semaphore() writeSemaphore: a Semaphore() primitiveOnlySupportsOneSemaphore: false Socket>>waitForConnectionFor:ifTimedOut: Receiver: a Socket[unconnected] Arguments and temporary variables: timeout: 45 timeoutBlock: [closure] in Socket>>connectTo:port:waitForConnectionFor: status: 0 deadline: 672266 Receiver's instance variables: semaphore: a Semaphore() socketHandle: #[52 74 202 76 0 0 0 0 64 114 35 0] readSemaphore: a Semaphore() writeSemaphore: a Semaphore() primitiveOnlySupportsOneSemaphore: false Socket>>connectTo:port:waitForConnectionFor: Receiver: a Socket[unconnected] Arguments and temporary variables: hostAddress: #[127 0 0 1] port: 8090 timeout: 45 Receiver's instance variables: semaphore: a Semaphore() socketHandle: #[52 74 202 76 0 0 0 0 64 114 35 0] readSemaphore: a Semaphore() writeSemaphore: a Semaphore() primitiveOnlySupportsOneSemaphore: false Socket>>connectTo:port: Receiver: a Socket[unconnected] Arguments and temporary variables: hostAddress: #[127 0 0 1] port: 8090 Receiver's instance variables: semaphore: a Semaphore() socketHandle: #[52 74 202 76 0 0 0 0 64 114 35 0] readSemaphore: a Semaphore() writeSemaphore: a Semaphore() primitiveOnlySupportsOneSemaphore: false --- The full stack --- [] in Socket>>connectTo:port:waitForConnectionFor: Socket>>waitForConnectionFor:ifTimedOut: Socket>>connectTo:port:waitForConnectionFor: Socket>>connectTo:port: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SocketStream class>>openConnectionToHost:port: SocketStream class>>openConnectionToHostNamed:port: WebClient>>connect WebClient>>sendRequest:contentBlock: WebClient>>sendRequest:content:size: WebClient>>sendRequest: WebClient>>httpGet:do: WebClient>>httpGet: WebClient class>>httpGet: UndefinedObject>>DoIt Compiler>>evaluate:in:to:notifying:ifFail:logged: [] in SmalltalkEditor(TextEditor)>>evaluateSelection BlockClosure>>on:do: SmalltalkEditor(TextEditor)>>evaluateSelection SmalltalkEditor(TextEditor)>>inspectIt SmalltalkEditor(TextEditor)>>inspectIt: SmalltalkEditor(TextEditor)>>dispatchOnCharacter:with: SmalltalkEditor(TextEditor)>>readKeyboard [] in TextMorphForEditView(TextMorph)>>keyStroke: TextMorphForEditView(TextMorph)>>handleInteraction:fromEvent: TextMorphForEditView>>handleInteraction:fromEvent: TextMorphForEditView(TextMorph)>>keyStroke: TextMorphForEditView>>keyStroke: TextMorphForEditView(TextMorph)>>handleKeystroke: KeyboardEvent>>sentTo: TextMorphForEditView(Morph)>>handleEvent: TextMorphForEditView(Morph)>>handleFocusEvent: [] in HandMorph>>sendFocusEvent:to:clear: [] in PasteUpMorph>>becomeActiveDuring: BlockClosure>>on:do: PasteUpMorph>>becomeActiveDuring: HandMorph>>sendFocusEvent:to:clear: HandMorph>>sendEvent:focus:clear: HandMorph>>sendKeyboardEvent: HandMorph>>handleEvent: HandMorph>>processEvents [] in WorldState>>doOneCycleNowFor: Array(SequenceableCollection)>>do: WorldState>>handsDo: WorldState>>doOneCycleNowFor: WorldState>>doOneCycleFor: PasteUpMorph>>doOneCycle [] in Project class>>spawnNewProcess [] in BlockClosure>>newProcess -- View this message in context: http://forum.world.st/Webclient-localhost-error-tp3018443p3018443.html Sent from the Squeak - Dev mailing list archive at Nabble.com.

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Question about Cog
by Alain_Rastoul 31 Oct '10

31 Oct '10

Hi, Just a simple question : is FFI working with the current Cog version ? Thanks for your answer Alain

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Wrapping Ruby libraries - what is the best way?
by Sean P. DeNigris 31 Oct '10

31 Oct '10

Squeakers, I never want to leave my image!! That includes interacting with my web accounts (e.g. gmail, wordpress). I started using WebClient to access/script them in Squeak, but ran into SSL problems on the Mac. I switched to Ruby's Mechanize library, but as much as I was vibing with VI, the run-code cycle (yuck) and files (eww) were too much to bear. So I decided to wrap the library in Squeak. Where can I find examples/tutorials on how to do this? What advice do you have? My (possibly naive) plan is to: 1. write a Ruby app that includes the library and starts a socket server (done) 2. create classes in Squeak to mirror the library classes 3. use FFI to start the Ruby app (done) 4. send text commands via socket to do the real work in Ruby (proof of concept done) I got Ruby and Squeak talking through the socket, but wanted a sanity check before spending too much time. What do you think? Thanks. Sean -- View this message in context: http://forum.world.st/Wrapping-Ruby-libraries-what-is-the-best-way-tp301820… Sent from the Squeak - Dev mailing list archive at Nabble.com.

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Re: [Idiom] 'myfile.txt' asFileName readStream contents
by Hannes Hirzel 31 Oct '10

31 Oct '10

On 10/30/10, Norbert Hartl <norbert(a)hartl.name> wrote: > > On 30.10.2010, at 13:14, Hannes Hirzel wrote: > >> Surely, but not what Randal implies in terms of streams I suppose.... >> >> The idiom implies that a file stream is created and that I get the >> content of a file -- not the content of the file name. >> > I read it different. You get an readStream on a filename which is a String. > I would expect it to be > > 'myFile.txt' asFile readStream contents Yes something like this; but asFile is neither in Squeak nor in Pharo. So what we currently have (in both Squeak and Pharo) is (FileStream fileNamed: 'myfile.txt') contents to express this. Not as elegant but it works. > or > > 'myFile.txt' asFileName file readStream contents (but than someone will > bring up Demeter) > > Norbert > >> --Hannes >> >> On 10/30/10, Peter Hugosson-Miller <oldmanlink(a)gmail.com> wrote: >>> The result you got is what I would have expected too. >>> >>> -- >>> Cheers, >>> Peter >>> >>> On Sat, Oct 30, 2010 at 12:50 PM, Hannes Hirzel >>> <hannes.hirzel(a)gmail.com>wrote: >>> >>>> Hello >>>> >>>> Randal Schwartz writes in his blog >>>> >>>> http://methodsandmessages.posterous.com/writestreams-of-consciousness-going… >>>> about streams citing Derek Williams http://derekwilliams.us/?p=1411 >>>> >>>> He gives the following as an example of elegant syntax of Smalltalk >>>> >>>> 'myfile.txt' asFileName readStream contents >>>> >>>> This does not work in Squeak nor in Pharo. >>>> >>>> It produces a ReadStream on the contents of the _String_ 'myfile.txt'. >>>> i.e. the ByteString with 10 elements. >>>> >>>> Comments? >>>> >>>> Regards >>>> >>>> Hannes >>>> >>> >> > > >

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[Idiom] 'myfile.txt' asFileName readStream contents
by Hannes Hirzel 31 Oct '10

31 Oct '10

Hello Randal Schwartz writes in his blog http://methodsandmessages.posterous.com/writestreams-of-consciousness-going… about streams citing Derek Williams http://derekwilliams.us/?p=1411 He gives the following as an example of elegant syntax of Smalltalk 'myfile.txt' asFileName readStream contents This does not work in Squeak nor in Pharo. It produces a ReadStream on the contents of the _String_ 'myfile.txt'. i.e. the ByteString with 10 elements. Comments? Regards Hannes

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Re: [squeak-dev] To a terabyte and... beyond
by David T. Lewis 30 Oct '10

30 Oct '10

(cc squeak-dev per Bert's suggestion) Hi Dan, Indeed it is "#define SQ_VI_BYTES_PER_WORD 8". This macro is the one used in sqMemoryAccess.h, so BYTES_PER_WORD and BASE_HEADER_SIZE are set from SQ_VI_BYTES_PER_WORD. It turned out that it is possible to rearrange some class and instance variables in ObjectMemory and Intepreter such that the generated C code is the same for 32 and 64 bit object memory, controlled at compile time by the SQ_VI_BYTES_PER_WORD macro. I'm afraid it makes the Smalltalk source less readable, but it's nice not to need to generate different sets of C sources for src32 and src64. I should mention that recent versions of VMMaker can no longer be loaded into a Squeak 3.8 image, primarily due to the use of pragmas, e.g. "<inline: true>" rather than "self inline: true", which in turn means that at the moment one cannot genererate a current VM from the Squeak 3.8 based 64-bit image. I will have a bit of time to play with this on Tuesday, so I'll see if I can find a way to either load current VMMaker into the 3.8 image, or to trace an up-to-date Squeak 4.1 image to 64 bits. I'll let you know before Wednesday if I have made any progress. Dave On Fri, Oct 29, 2010 at 10:40:39PM -0700, Dan Ingalls wrote: > Hi David - > > Thanks for the pointers. I'm assuming you meant BYTES_PER_WORD 8, right? > Do let me know if you gather more infor in the next few days. I think I'm not going to have a chance at this until after next Wed. > > All the best > - Dan > --------------------------------------- > >On Fri, Oct 29, 2010 at 09:48:11AM +0200, Bert Freudenberg wrote: > >> On 29.10.2010, at 06:25, Dan Ingalls wrote: > >> > >> > Hi Guys ;-) > >> > > >> > Anyone have experience with running super huge Squeaks? I have the chance to use an absurdly big machine. I'd appreciate advice (offline unless you think it would be generally useful) regarding the relative stability of, say, linux and windoze builds of 64-bit Squeaks known (or thought) to run with over a terabyte of objects, and also where there may be some pre-built 64-bit images (sorry if this is in an obvious place). Finally (since I've mainly used a Mac for Squeak) I guess I'll have to know how to tell it how big to be, or would it grow gracefully if I just said "(String new: 1000000000000) size" in a normal image? > >> > > >> > Thanks > >> > > >> > - Dan > >> > >> Dave Lewis has been working on 64 bit stuff, he surely will respond (and please keep responses on list, this is rather interesting). A recent image is here: > >> > >> http://squeakvm.org/squeak64/sq64-dtl.zip > >> > >> I think there isn't even much experience with a Gigabyte-sized image ... > > > >Hi Dan, > > > >The image that Bert mentions is an updated version of your original > >64-bit image, suitable for running on a current Squeak VM. I have > >not tried tracing the latest Squeak trunk image (sounds like a good > >project for this weekend though :) > > > >The quickest way to get a VM running is to start with an up to > >date Squeak image, load latest VMMaker from www.squeaksource.com/VMMaker > >and platform sources from Subversion. The "64-bit VM" button is > >gone from the VMMaker tool, all that is needed to build the 64 bit > >version is to set a macro either in ./build/config.h or in > >./src/vm/interp.h: > > > > #define SQ_VI_BYTES_PER_WORD 4 > > > >I use Linux for running this stuff, so I can't speak to Windows or > >OS X. On a unix platform, if you evaluate "(String new: 1000000000000) size" > >in sq64-dtl.image, you will get a low space notifier. I remember adding > >some checks to the VM to prevent address overflows for allocations > >that are "unreasonably large), and I think this notifier reflects > >hitting that limit (sorry I can't recall the details, I'll check later). > >It would be fun to see how big "unreasonably large" could be though :) > > > >A gigabyte is no problem though. The following succeeds on a > >64-bit image: > > > > (String new: 1000000000) size ==> 1000000000 > > > >For allocation requests that are within the current VM limits, > >what you can expect to see on a unix box is that your VM will > >cheerfully keep allocating memory from the OS until your system > >starts swapping pages to disk, at which point everything on the > >system slows to a crawl. It will be interesting to see what happens > >on a really big box with lots of memory. > > > >Dave

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HTML parser (again) (again)
by Sean P. DeNigris 30 Oct '10

30 Oct '10

All the threads in the mailing list seem to die off unresolved. What are the options available in current Squeak, and what are the differences? Here's my experience: 1. HTML (Squeaksource) - parser pulled out of Scamper. Loads in Squeak 4.1, seems awkward, but maybe I don't know how to use it. Here's a snippet I wrote that worked: doc := HtmlParser parse: htmlString. thread := doc body subEntities detect: [ :e | e id = 'thread' ]. subject_header := thread contents detect: [ :e | e id = 'message_heading' ]. subject := (subject_header contents at: 1) text. 2. HTML & CSS Validating Parser (Squeaksource) - It loads, but I don't have the slightest clue how to use it. I found references to people using it. They must be Alan Kay's close relatives, or live in machine world like the Lawnmower Man because I couldn't find a shred of documentation or even one class that looked plausible as a starting point. 3. Soup * In 4.1 - "Installer squeaksource project: 'Soup'; install: 'Soup'" ->"depends on... RxMatcher" warning - "Installer squeaksource project: 'Soup'; install: 'Network-Protocols'", then Soup -> "NonBooleanReceiver: proceed for truth" (See [1] for log). Also, two general points that would put turbo boosters behind the community: <rant> 1. I know this is totally ungrateful, but please, if you design a library and are nice enough to release it for free to the community, take 10 seconds and at least add an XxxInfo category and class with a simple example in the class comment (if you don't have time for HelpSystem, etc.). It can be worse than not having a library, to spend hours trying to use one, and never have it work. 2. If you ask questions, and the community rallies behind you on the mailing list, IRC, etc., and you solve the problem - hooray! Please show your gratitude and pay it forward by sharing the solution on the list, so that others who have the same situation can benefit, and we can all learn without exhausting the time and energy of the gurus having to explain the same thing over and over. </rant> Thank you. Sean [1] Log: NonBooleanReceiver: proceed for truth. 28 October 2010 9:31:15.328 pm VM: Mac OS - Smalltalk Image: Squeak4.1 [latest update: #9957] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /Users/sean/Squeak/Fresh Images/Squeak4.1 Trusted Dir /foobar/tooBar/forSqueak/bogus Untrusted Dir /Users/sean/Library/Preferences/Squeak/Internet/My Squeak HTTPSocket(Object)>>mustBeBooleanIn: Receiver: a HTTPSocket[connected] Arguments and temporary variables: context: [] in HTTPSocket class>>httpGetDocument:args:accept:request: proceedValue: nil Receiver's instance variables: semaphore: a Semaphore() socketHandle: #[183 120 202 76 0 0 0 0 144 223 51 0] readSemaphore: a Semaphore() writeSemaphore: a Semaphore() primitiveOnlySupportsOneSemaphore: false headerTokens: nil headers: nil responseCode: nil HTTPSocket(Object)>>mustBeBoolean Receiver: a HTTPSocket[connected] Arguments and temporary variables: Receiver's instance variables: semaphore: a Semaphore() socketHandle: #[183 120 202 76 0 0 0 0 144 223 51 0] readSemaphore: a Semaphore() writeSemaphore: a Semaphore() primitiveOnlySupportsOneSemaphore: false headerTokens: nil headers: nil responseCode: nil [] in HTTPSocket class>>httpGetDocument:args:accept:request: Receiver: HTTPSocket Arguments and temporary variables: <<error during printing> Receiver's instance variables: superclass: Socket methodDict: a MethodDictionary(#contentType->(HTTPSocket>>#contentType "a Compi...etc... format: 146 instanceVariables: #('headerTokens' 'headers' 'responseCode') organization: ('accessing' contentType contentType: contentsLength: getHeader: ...etc... subclasses: nil name: #HTTPSocket classPool: a Dictionary(#HTTPBlabEmail->'' #HTTPPort->80 #HTTPProxyCredentials-...etc... sharedPools: nil environment: Smalltalk globals "a SystemDictionary with lots of globals" category: #'Network-Protocols' SmallInteger(Integer)>>timesRepeat: Receiver: 3 Arguments and temporary variables: aBlock: [closure] in HTTPSocket class>>httpGetDocument:args:accept:request: count: 1 Receiver's instance variables: 3 --- The full stack --- HTTPSocket(Object)>>mustBeBooleanIn: HTTPSocket(Object)>>mustBeBoolean [] in HTTPSocket class>>httpGetDocument:args:accept:request: SmallInteger(Integer)>>timesRepeat: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - HTTPSocket class>>httpGetDocument:args:accept:request: HTTPSocket class>>httpGet:args:accept:request: HTTPSocket class>>httpGet:args:user:passwd: [] in MCHttpRepository>>allFileNames [] in [] in MCHttpRepository>>displayProgress:during: BlockClosure>>on:do: [] in MCHttpRepository>>displayProgress:during: [] in [] in ProgressInitiationException>>defaultMorphicAction BlockClosure>>on:do: [] in ProgressInitiationException>>defaultMorphicAction BlockClosure>>ensure: ProgressInitiationException>>defaultMorphicAction ProgressInitiationException>>defaultAction UndefinedObject>>handleSignal: MethodContext(ContextPart)>>handleSignal: MethodContext(ContextPart)>>handleSignal: MethodContext(ContextPart)>>handleSignal: ProgressInitiationException(Exception)>>signal ProgressInitiationException>>display:at:from:to:during: ProgressInitiationException class>>display:at:from:to:during: MorphicUIManager>>displayProgress:at:from:to:during: MCHttpRepository>>displayProgress:during: MCHttpRepository>>allFileNames MCHttpRepository(MCFileBasedRepository)>>allFileNamesOrCache MCHttpRepository(MCFileBasedRepository)>>readableFileNames InstallerMonticello>>mcThing [] in InstallerMonticello>>basicInstall [] in BlockClosure>>valueSupplyingAnswers: BlockClosure>>on:do: BlockClosure>>valueSupplyingAnswers: BlockClosure>>valueSuppressingMessages:supplyingAnswers: InstallerMonticello(Installer)>>withAnswersDo: InstallerMonticello>>basicInstall [] in InstallerMonticello(Installer)>>installLogging InstallerMonticello(Installer)>>logErrorDuring: InstallerMonticello(Installer)>>installLogging InstallerMonticello(Installer)>>install InstallerMonticello(Installer)>>install: UndefinedObject>>DoIt Compiler>>evaluate:in:to:notifying:ifFail:logged: [] in SmalltalkEditor(TextEditor)>>evaluateSelection BlockClosure>>on:do: SmalltalkEditor(TextEditor)>>evaluateSelection SmalltalkEditor(TextEditor)>>doIt SmalltalkEditor(TextEditor)>>doIt: ...etc... -- View this message in context: http://forum.world.st/HTML-parser-again-again-tp3018595p3018595.html Sent from the Squeak - Dev mailing list archive at Nabble.com.

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Sharing experienced with Etoys on the iPad
by Edgar J. De Cleene 30 Oct '10

30 Oct '10

Hi: Very , very thanks to Bert, to John and to all unknown to me heavy workers for just me add ³un Ladrillo². I just put the Etoys image on the iPad and was able to feed with the attached script. Then could go to SqueakSource repo, loadorphicGames-edc.1.mcz and have the classic games into the image. Cant¹t save it, but the package was saved and the next time I could load easily. Question: Somebody could save the modified image or I missing some? Seems me is a more short way start from this and load things for having a SuperFunSqueak ...what is my goal cooking scripts or take my modified Monticello for this I using a pencil with aluminum foil wrapped as more fine pointing device. Like to have a image with working sound recording, and could use the iPad niceties. Edgar

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How to run code when an object is GC-ed
by Sean P. DeNigris 30 Oct '10

30 Oct '10

I have objects that are proxies for Ruby objects, and I want the ruby side to be alerted when the proxies are gc-ed so I can remove them. How do I hook to run the code when the object is garbage collected? Googled: "squeak garbage collection hook" and "squeak run code when object is garbage collected", still clueless :) Thanks. Sean -- View this message in context: http://forum.world.st/How-to-run-code-when-an-object-is-GC-ed-tp3019930p301… Sent from the Squeak - Dev mailing list archive at Nabble.com.

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