Vm-dev May 2012

vm-dev@lists.squeakfoundation.org

37 participants
74 discussions

[commit] r2554 - Fix the undeclared variable ref for the linux BochsIA32Plugin.
by commits＠squeakvm.org 20 May '12

20 May '12

Author: eliot Date: 2012-05-19 15:07:03 -0700 (Sat, 19 May 2012) New Revision: 2554 Removed: branches/Cog/image/BaseExtensionsForVMMaker.1.cs Modified: branches/Cog/image/ branches/Cog/platforms/unix/plugins/BochsIA32Plugin/Makefile.inc Log: Fix the undeclared variable ref for the linux BochsIA32Plugin. Nuke an obsolete changeset. Property changes on: branches/Cog/image ___________________________________________________________________ Modified: svn:ignore - prefs special-dirs package-cache + prefs special-dirs package-cache SqueakDebug.log Deleted: branches/Cog/image/BaseExtensionsForVMMaker.1.cs =================================================================== --- branches/Cog/image/BaseExtensionsForVMMaker.1.cs 2012-05-19 21:41:17 UTC (rev 2553) +++ branches/Cog/image/BaseExtensionsForVMMaker.1.cs 2012-05-19 22:07:03 UTC (rev 2554) @@ -1,172 +0,0 @@ -'From Squeak4.1 of 17 April 2010 [latest update: #9957] on 21 May 2010 at 11:13:17 am'! - -!Character methodsFor: 'printing' stamp: 'eem 5/21/2010 11:11'! -hex - ^value printStringBase: 16! ! - - -!Collection methodsFor: 'enumerating' stamp: 'eem 1/11/2009 14:11'! -fold: binaryBlock - "Evaluate the block with the first two elements of the receiver, - then with the result of the first evaluation and the next element, - and so on. Answer the result of the final evaluation. If the receiver - is empty, raise an error. If the receiver has a single element, answer - that element." - "#('if' 'it' 'is' 'to' 'be' 'it' 'is' 'up' 'to' 'me') fold: [:a :b | a, ' ', b]" - - | firstValue nextValue | - firstValue := nextValue := Object new. "something that can't be in the receiver" - self do: - [:each | - nextValue := firstValue == nextValue - ifTrue: [each] - ifFalse: [binaryBlock value: nextValue value: each]]. - ^nextValue == firstValue - ifTrue: [self errorEmptyCollection] - ifFalse: [nextValue]! ! - - -!HexTest methodsFor: 'as yet unclassified' stamp: 'eem 5/21/2010 11:12'! -testIntegerHex - | result | - result := 15 asInteger hex. - self assert: result = '16rF'. - result := 0 asInteger hex. - self assert: result = '16r0'. - result := 255 asInteger hex. - self assert: result = '16rFF'. - result := 90 asInteger hex. - self assert: result = '16r5A'! ! - - -!Integer methodsFor: 'printing' stamp: 'eem 5/21/2010 11:06'! -hex - "Print the receiver as hex, prefixed with 16r. DO NOT CHANGE THIS!! The Cog VMMaker depends on this. - Consider using any of - printStringHex - printStringBase: 16 - printStringBase: 16 length: 8 padded: true - storeStringHex - storeStringBase: 16 - storeStringBase: 16 length: 11 padded: true" - ^self storeStringBase: 16! ! - -!Integer methodsFor: 'printing' stamp: 'eem 5/21/2010 11:09'! -hex8 - "Print the receiver in base 16 with prefixed base, using at least 8 digits. - DO NOT CHANGE THIS!! The Cog VMMaker depends on this. - Consider using storeStringBase: 16 length: 11 padded: true instead." - "16r3333 hex8" - | hex | - hex := self hex. "16rNNN" - ^hex size < 11 - ifTrue: [hex copyReplaceFrom: 4 to: 3 - with: ('00000000' copyFrom: 1 to: 11-hex size)] - ifFalse: [hex]! ! - - -!SequenceableCollection methodsFor: 'copying' stamp: 'eem 2/10/2009 11:44'! -copyUpThrough: anElement - "Answer all elements up to and including anObject. If there - is no such object, answer a copy of the receiver." - - ^self first: (self indexOf: anElement ifAbsent: [^ self copy])! ! - - -!SmalltalkImage methodsFor: 'special objects' stamp: 'Igor.Stasenko 5/4/2010 17:01'! -recreateSpecialObjectsArray - "Smalltalk recreateSpecialObjectsArray" - - "To external package developers: - **** DO NOT OVERRIDE THIS METHOD. ***** - If you are writing a plugin and need an additional special object(s) for own use, - use addGCRoot() function and use own, separate special objects registry " - - "The Special Objects Array is an array of object pointers used - by the - Squeak virtual machine. Its contents are critical and - unchecked, so don't even think of playing here unless you - know what you are doing." - | newArray | - newArray := Array new: 55. - "Nil false and true get used throughout the interpreter" - newArray at: 1 put: nil. - newArray at: 2 put: false. - newArray at: 3 put: true. - "This association holds the active process (a ProcessScheduler)" - newArray at: 4 put: (self associationAt: #Processor). - "Numerous classes below used for type checking and instantiation" - newArray at: 5 put: Bitmap. - newArray at: 6 put: SmallInteger. - newArray at: 7 put: ByteString. - newArray at: 8 put: Array. - newArray at: 9 put: Smalltalk. - newArray at: 10 put: Float. - newArray at: 11 put: MethodContext. - newArray at: 12 put: BlockContext. - newArray at: 13 put: Point. - newArray at: 14 put: LargePositiveInteger. - newArray at: 15 put: Display. - newArray at: 16 put: Message. - newArray at: 17 put: CompiledMethod. - newArray at: 18 put: (self specialObjectsArray at: 18). - "(low space Semaphore)" - newArray at: 19 put: Semaphore. - newArray at: 20 put: Character. - newArray at: 21 put: #doesNotUnderstand:. - newArray at: 22 put: #cannotReturn:. - newArray at: 23 put: nil. - "An array of the 32 selectors that are compiled as special bytecodes, - paired alternately with the number of arguments each takes." - newArray at: 24 put: #( #+ 1 #- 1 #< 1 #> 1 #<= 1 #>= 1 #= 1 #~= 1 - #* 1 #/ 1 #\\ 1 #@ 1 #bitShift: 1 #// 1 #bitAnd: 1 #bitOr: 1 - #at: 1 #at:put: 2 #size 0 #next 0 #nextPut: 1 #atEnd 0 #== 1 #class 0 - #blockCopy: 1 #value 0 #value: 1 #do: 1 #new 0 #new: 1 #x 0 #y 0 ). - "An array of the 255 Characters in ascii order." - newArray at: 25 put: ((0 to: 255) collect: [:ascii | Character value: ascii]). - newArray at: 26 put: #mustBeBoolean. - newArray at: 27 put: ByteArray. - newArray at: 28 put: Process. - "An array of up to 31 classes whose instances will have compact headers" - newArray at: 29 put: self compactClassesArray. - newArray at: 30 put: (self specialObjectsArray at: 30). - "(delay Semaphore)" - newArray at: 31 put: (self specialObjectsArray at: 31). - "(user interrupt Semaphore)" - "Prototype instances that can be copied for fast initialization" - newArray at: 32 put: (Float new: 2). - newArray at: 33 put: (LargePositiveInteger new: 4). - newArray at: 34 put: Point new. - newArray at: 35 put: #cannotInterpret:. - "Note: This must be fixed once we start using context prototypes (yeah, right)" - "(MethodContext new: CompiledMethod fullFrameSize)." - newArray at: 36 put: (self specialObjectsArray at: 36). "Is the prototype MethodContext (unused by the VM)" - newArray at: 37 put: BlockClosure. - "(BlockContext new: CompiledMethod fullFrameSize)." - newArray at: 38 put: (self specialObjectsArray at: 38). "Is the prototype BlockContext (unused by the VM)" - newArray at: 39 put: (self specialObjectsArray at: 39). "preserve external semaphores" - "array of objects referred to by external code" - newArray at: 40 put: PseudoContext. - newArray at: 41 put: TranslatedMethod. - "finalization Semaphore" - newArray at: 42 put: ((self specialObjectsArray at: 42) ifNil: [Semaphore new]). - newArray at: 43 put: LargeNegativeInteger. - "External objects for callout. - Note: Written so that one can actually completely remove the FFI." - newArray at: 44 put: (self at: #ExternalAddress ifAbsent: []). - newArray at: 45 put: (self at: #ExternalStructure ifAbsent: []). - newArray at: 46 put: (self at: #ExternalData ifAbsent: []). - newArray at: 47 put: (self at: #ExternalFunction ifAbsent: []). - newArray at: 48 put: (self at: #ExternalLibrary ifAbsent: []). - newArray at: 49 put: #aboutToReturn:through:. - newArray at: 50 put: #run:with:in:. - newArray at: 51 put: (self at: #WeakFinalizationList ifAbsent: []). - newArray at: 52 put: nil. - newArray at: 53 put: (self at: #Alien ifAbsent: []). - newArray at: 54 put: #invokeCallback:stack:registers:jmpbuf:. - newArray at: 55 put: (self at: #UnsafeAlien ifAbsent: []). - - "Now replace the interpreter's reference in one atomic operation" - self specialObjectsArray become: newArray - ! ! - Modified: branches/Cog/platforms/unix/plugins/BochsIA32Plugin/Makefile.inc =================================================================== --- branches/Cog/platforms/unix/plugins/BochsIA32Plugin/Makefile.inc 2012-05-19 21:41:17 UTC (rev 2553) +++ branches/Cog/platforms/unix/plugins/BochsIA32Plugin/Makefile.inc 2012-05-19 22:07:03 UTC (rev 2554) @@ -7,4 +7,5 @@ XLDFLAGS= -L$(topdir)/processors/IA32/linuxbochs/cpu \ -L$(topdir)/processors/IA32/linuxbochs/fpu \ -L$(topdir)/processors/IA32/linuxbochs/disasm \ - -lcpu -lfpu -ldisasm + -lcpu -lfpu -ldisasm \ + -lstdc++

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Mac + OpenGL and makeCurrent()
by Igor Stasenko 17 May '12

17 May '12

Hello, lately i discovered that my small NBOpenGL demos is not working under Cocoas VMs. The reason, i found is that Cocoa VM using OpenGL by own for blitting the image on screen, and activates own opengl context when doing that. The problem is that it doesn't restores back the previously active context, as result, all calls in image invoked under wrong context , and things are messed up. We tried to quickly fix the problem with Esteban by introducing save/restore calls before changing the context, but no success. It seems like Cocoa doing something extra in addition to making call to makeCurrent() , or probably tracking the active context by own, and simply don't sees the context created outside of it. I modified the demo code to switch back to my context when rendering. And things are working. Unless you will need to debug the rendering code and step over gl calls. This won't work anymore, because VM stealing the context. :( Any ideas what can be done? -- Best regards, Igor Stasenko.

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Passing additional parameters for a particular plugin
by Damien Cassou 17 May '12

17 May '12

Hi, I try to build DBusPlugin (www.squeaksource.com/dbus). Unfortunately, compiling the generated C file requires passing "$(pkg-config dbus-1 --cflags)" as additional compiler argument. How can I specify that? Thanks -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry

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Re: [Vm-dev] CogDroid VMMaker issues
by Dmitry Golubovsky 17 May '12

17 May '12

Phil, On Thu, May 17, 2012 at 12:27 AM, Phil (list) <pbpublist(a)gmail.com> wrote: > The updated build instructions are greatly appreciated. I had figured out > enough to get a working vm, but these instructions make the process simpler > than what I went through. I'm working on a few modifications that might be Great. > of interest to other Android users when they're done... is email a good way > to submit patches for review? Also, are you looking to keep CogDroid I think, just fork a repo on Gitorious and use pull request later to submit changes. > running on as many versions of Android as possible or would 3.x+ specific > (phone and tablet) mods be of interest? It can run (expected at least) on anything with API >= 4. I just do not have any newer Android on hand to test. It will be of great interest to have multitouch events (something I was requested, but have no capability to test). Also, widget-based derived VM instances would be also interesting: to have them coexist on the home screen rather than to be fullscreen. Thanks for your ideas. -- Dmitry Golubovsky Anywhere on the Web

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CogDroid VMMaker issues
by Dmitry Golubovsky 17 May '12

17 May '12

Hi, I have spotted this in the VM mailing list (I only read it via web occasionally these days, so please cc me for faster response if there is a problem, or file an issue in the squeakvm-tablet project). Here are the instructions (still inexact, but someone followed them, and succeeded). # clone the repo git clone https://git.gitorious.org/~golubovsky/cogvm/dmg-blessed.git # go to the build scripts directory cd <repo/root>/codegen-scripts # create the base Pharo image export SQUEAKVM=<path/to/precompiled/squeak/vm/executable>; sh ./buildImage.sh -headless # make sure there is no PharoDebug.log in <repo/root>/build, and there is generator.image (or there may be PharoDebug.log containing unrelated warnings, e. g. about AbstractLauncher - use -nosound instead of -headless if you would like to inspect the problem) # generate the VM and plugins from VMMaker sh ./generate.sh -headless StackEvtAndroidConfig # build the native VM cd <repo/root>/platforms/android/project ./ndk-build This only builds the native VM. It is now librarified: to build actual Android project, see under <repo/root>/platforms/android/derived/generic - this should build an actual apk ant clean && ant debug (reference to the native library is already in project.properties) PS Some time ago I requested access to Jenkins to allow me set up Cogdroid build jobs - has there been any progress? Thanks. -- Dmitry Golubovsky Anywhere on the Web

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Compiling DBusPlugin
by Damien Cassou 17 May '12

17 May '12

Hi, the official DBusPlugin source file defines argumentsAddInt16toIter() as static sqInt argumentsAddInt16toIter(sqInt oop, DBusMessageIter*iter) { dbus_int16_t intArg; if (!((oop & 1))) { msg("Oop is no integer value"); return interpreterProxy->primitiveFail(); } intArg = (oop >> 1); if (!(dbus_message_iter_append_basic(iter, DBUS_TYPE_INT16, &intArg))) { msg("Can not add Int16 argument."); return interpreterProxy->primitiveFail(); } } however, if I generate the sources using VMMaker, I get static void argumentsAddInt16toIter(sqInt oop, DBusMessageIter*iter) { dbus_int16_t intArg; if (!((oop & 1))) { msg("Oop is no integer value"); interpreterProxy->primitiveFail(); return; } intArg = interpreterProxy->integerValueOf(oop); if (!(dbus_message_iter_append_basic(iter, DBUS_TYPE_INT16, &intArg))) { msg("Can not add Int16 argument."); interpreterProxy->primitiveFail(); return; } } The implementation and signature are different which makes the use of this function not compile anymore: [...] _return_value = argumentsAddInt16toIter(arg, iter); if (interpreterProxy->failed()) { return null; } interpreterProxy->popthenPush(3, _return_value); [...] How can I change this code so that it works with the generated definition of argumentsAddInt16toIter()? Thank you -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry

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CogDroid VMMaker issues
by Dmitry Golubovsky 16 May '12

16 May '12

Jeremy Kajikawa wrote: > What does "generator.image" contain? > and does anyone have a reference document or suggested location in > "the blue book" where I can find object formatting information? generator.image contains the result of loading the VMMaker (and CMakeVMMaker) packages with their dependencies into a fresh Pharo Core image. You may get a better idea if you look at the LoadVMMaker.st file in the codegen-scripts subdirectory of the repo. generator.image will be used at the next step to run CMakeVMMaker and emit VM sources (Slang -> C) Hope this helps. Thanks. PS Not sure if I can answer your question about "blue book" though. -- Dmitry Golubovsky Anywhere on the Web

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New Cuis mail list
by Juan Vuletich (mail lists) 16 May '12

16 May '12

Hi Folks, There's a new mail list for discussion about Cuis Smalltalk at http://www.jvuletich.org/mailman/listinfo/cuis_jvuletich.org . Everybody is welcome. Language is English. In any case, if you want to talk about Cuis in Spanish, the 'official' place is squeakRos(a)gruposyahoo.com.ar . Cheers, Juan Vuletich

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CogDroid VMMaker issues
by Phil (list) 15 May '12

15 May '12

In trying to generate sources from VMMaker per the instructions at http://code.google.com/p/squeakvm-tablet/wiki/CogNotes, I ran into a couple of issues. The first one was a syntax error when loading CMakeVMMaker-golubovsky.136.mcz in StackEvtUnixConfig>>platformSources "answer the same set of source files except that sqUnixMain.c is replaced with sqUnixEvtMain.c, sqUnixHeartbeat.c is replaced with sqUnixEvtBeat.c" ^ super platformSources collect: [ :file | (file = 'sqUnixMain.c') ifTrue: 'sqUnixEvtMain.c' ifFalse: [(file = 'sqUnixHeartbeat.c') ifTrue: 'sqUnixEvtBeat.c' ifFalse: file] ]. this was easy enough to fix (I had the same issue with version 141): platformSources "answer the same set of source files except that sqUnixMain.c is replaced with sqUnixEvtMain.c, sqUnixHeartbeat.c is replaced with sqUnixEvtBeat.c" ^ super platformSources collect: [ :file | (file = 'sqUnixMain.c') ifTrue: ['sqUnixEvtMain.c'] ifFalse: [(file = 'sqUnixHeartbeat.c') ifTrue: ['sqUnixEvtBeat.c'] ifFalse: file] ]. After everything was loaded without errors, I ran: StackEvtAndroidConfig new generateSources; generate. with CMakeVMMaker-golubovsky.136.mcz/VMMaker-oscog-golubovsky.111.mcz I get: 'MessageNotUnderstood: CMakeAndroidPluginGenerator>>append:with:' so I tried the latest CMakeVMMaker-golubovsky.141.mcz/VMMaker-oscog-golubovsky.130.mcz I get: 'Error: Sets cannot meaningfully contain nil' in CCodeGeneratorGlobalStructure(CCodeGenerator)>>emitCConstantsOn: in the literalsDo: block which appears to be due to literal8 being set to nil->VMClass class. Any suggestions on how to proceed? (i.e. which version of the packages should I be trying to get working based on the versions of Pharo/VMMaker specified in Mariano's post?) Thanks, Phil

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Re: [Vm-dev] Help/advice tracking down a squeak-vm regression
by David T. Lewis 14 May '12

14 May '12

Hi Miriam, I think that your message did not reach the vm-dev mailing list, so I am CCing the list here. There has been some additional discussion on the list (list archive is at http://lists.squeakfoundation.org/pipermail/vm-dev/2012-May/date.html#start and you can join the list at http://lists.squeakfoundation.org/mailman/listinfo/vm-dev) that you may want to read, as you probably are not CCed on all of the postings. I am glad that you are working on the packaging for Debian, and for sure the VM developers and Scratch developers need to be responsible for solving problems in VMs and the Scratch image. The discussion now on vm-dev is about how we can either update the VM or the Scratch image so that two versions of the VM may not be needed. Thanks for the work you are doing, Dave On Thu, May 10, 2012 at 09:49:57AM +0200, Miriam Ruiz wrote: > 2012/5/10 David T. Lewis <lewis(a)mail.msen.com>: > > > Amos, can you please clarify if further development of the Scratch > > image is planned? If yes, then updating the Scratch image may be > > the right thing to do. If no, then we can take a harder look at > > coming up with a way to produce a backward compatible VM. If neither > > of these is feasible, then it will probably be necessary to arrange > > a separate source distribution for a Scratch VM. > > Hi! > > Sorry for the delay in answering to this thread. I think that it is a > very sensible suggestion you're making. There is one thing I'm > concerned about, though: if it is finally necessary to include an > aditional older version of the VM in Debian to be able to run Scratch, > as other people have suggested earliuer,?who will maintain this VM? > > I mean, I can manage the packaging and some shallow patches if it is > necessary, as I do with all my packages, but as I'm not especially > proficient with the VM's code not I ever worked with it at a serious > level, so there's limits in what I can do. I suppose that Squeak > developers won't like to have to maintain two versions of the VM, and > the will probably just keep supporting, evolving and solving bugs from > the latest. I don't know if Scratch developers are willing or have > resources to solve big problems in the VM in case they appear, so that > leaves me probably close to being alone in fixing stuff in the VM if > something serious appear. I must confess that this perspective kind of > scares me. > > To sum up, if we finally have to keep a separate version of the VM for > running Scratch (and BYOB and other derivatives), we have to also find > out how to handle bugs and improvements in the VM in case that they're > needed. > > Greetings, > Miry

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Vm-dev May 2012