Vm-dev March 2011

vm-dev@lists.squeakfoundation.org

43 participants
133 discussions

Re: [Vm-dev] Re: [Pharo-project] Squeak/Pharo/Cuis on Android
by Colin Putney 04 Mar '11

04 Mar '11

On Fri, Mar 4, 2011 at 6:23 AM, Jecel Assumpcao Jr. <jecel(a)merlintec.com> wrote: > Wasn't this what Dan Ingalls did at Sun before starting the Lively > Kernel? IIRC, it was a new Squeak VM written from-scratch in Java, rather than generating Java from Slang. Colin

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VM Maker: CMakeVMMaker-EstebanLorenzano.33.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 04 Mar '11

04 Mar '11

Esteban Lorenzano uploaded a new version of CMakeVMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/CMakeVMMaker-EstebanLorenzano.33.mcz ==================== Summary ==================== Name: CMakeVMMaker-EstebanLorenzano.33 Author: EstebanLorenzano Time: 4 March 2011, 1:46:22 pm UUID: b55bd536-ff8b-4cf0-abd5-39c6a1e9359c Ancestors: CMakeVMMaker-EstebanLorenzano.32 switched back a "bad fix", and re-do, this time right (I hope)

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VM Maker: CMakeVMMaker-EstebanLorenzano.32.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 04 Mar '11

04 Mar '11

Esteban Lorenzano uploaded a new version of CMakeVMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/CMakeVMMaker-EstebanLorenzano.32.mcz ==================== Summary ==================== Name: CMakeVMMaker-EstebanLorenzano.32 Author: EstebanLorenzano Time: 4 March 2011, 12:03:56 pm UUID: f242fc68-6d6b-49fd-b5a6-b767e3489c9f Ancestors: CMakeVMMaker-IgorStasenko.31 small fixes changes to compilerFlags to allow debug (temporal)

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VM Maker: VMMaker-oscog-EstebanLorenzano.50.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 04 Mar '11

04 Mar '11

Esteban Lorenzano uploaded a new version of VMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/VMMaker-oscog-EstebanLorenzano.50.mcz ==================== Summary ==================== Name: VMMaker-oscog-EstebanLorenzano.50 Author: EstebanLorenzano Time: 4 March 2011, 1:24:27 pm UUID: 706e521e-44a0-46e5-beb1-6d25bd6aecc2 Ancestors: VMMaker-oscog-IgorStasenko.Stasenko.49 fixes to work on Cocoa Cog. It compiles, but doesn't run :(

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Re: [Pharo-project] Squeak/Pharo/Cuis on Android
by David T. Lewis 04 Mar '11

04 Mar '11

On Fri, Mar 04, 2011 at 10:29:05AM -0500, Dimitry Golubovsky wrote: > Hi, > > G??ran Krampe wrote: > > > ...or we need to get Squeak running inside/on-top-of Dalvik somehow. > > Weird ideas: > - PotatoSqueak is a port of the Squeak VM to java. Run that on Dalvik > and hey... > - PySqueak using Pypy could probably generate a fast Squeak VM running > in java bytecode which possibly also could be run on Dalvik. > > ------------------------------------------------------------------------------------------------------------------------- > > Well the original discussion on the Squeak ML declined into the OLPC > issues (back to Intel that is ;) > > Let's continue here. > > Thanks for the hints, I looked into these projects, but: > > Potato Squeak (JSqueak) doesn't seem alive. I tried to run it on my PC > with some recent Java (don't remember which version, same as I use to > compile Android stuff). Very slow, crashed all the time. Plus image > version is 2.x ... > > PySqueak seems like the repo is gone. Also, it's old too. > > Anyway, wrt translation of Squeak/Pharo VM to Java. How much labor > would it take to change VMMaker so it generates Java code instead of > C? Given some similarity between the two languages syntax? I think this is a perfectly reasonable thing to consider. There is of course a C code generator already in place in VMMaker, and there is no reason that a Java code generator could not be written. Matched up with some support code written in Java, the result would in principle be a VM written entirely in Java with no clib calls, FFI, JNI, etc. I do not know what the resulting performance would be, and there is no good way to really know without trying it. But it might very well be good enough to produce a usable VM. My guess, based on absolutely no data whatsoever, is that such a VM might run perhaps 2 or 3 times slower than a standard interpreter VM. I note that the C VMs gain a lot of their performance through the C code inlining performed by the Slang translation (which is amazingly effective by the way). I don't know if similar optimizations would apply to a Java implementation, but it seems possible that a decent Java generator with inlining might produce acceptable results. > I need to move on with the native port because my endpoint is in a > concrete application rather than the port itself. But would anyone be > interested in adjusting VMMaker? If someone writes the Java code generator, then I would be happy to work on adjusting VMMaker to use it (and I'm sure others will help also). I'm not offering to write the code generator, but I think it would be great if someone wants to give it a try. Dave

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[golubovsky@gmail.com: [squeak-dev] RE: Squeak/Pharo/Cuis on Android]
by David T. Lewis 04 Mar '11

04 Mar '11

Forwarding to vm-dev from squeak-dev list ----- Forwarded message from Dimitry Golubovsky <golubovsky(a)gmail.com> ----- Delivered-To: list-squeak-dev(a)lists.squeakfoundation.org Date: Thu, 3 Mar 2011 12:37:04 -0500 From: Dimitry Golubovsky <golubovsky(a)gmail.com> To: squeak-dev(a)lists.squeakfoundation.org Subject: [squeak-dev] RE: Squeak/Pharo/Cuis on Android Hi, Torsten Bergmann wrote: What is the state of Squeak/Pharo/Cuis for Android tablets and phone? Lots of questions: - what is the state of VM/images? - any comments/hints on devices, speed and memory consumption? - is it worth to buy one to run Smalltalk for own stuff? - anyone written apps with Smalltalk for Android? - is it possible to interface with native stuff. state of touch support, ... -------------------------------------------------------------------------------------------- I am working on my fork of the squeak android port: http://code.google.com/p/squeakvm-tablet/ - is my fork http://code.google.com/p/squeak-android-vm/ - is the parent project State of VM: I mostly borrowed the JNI part of the parent project, making small adjustments as needed. There will be more as I need to interface TTS (speech synthesizer), and this requires some callbacks to Java code. I haven't come up with a final solution yet. Images: I have inherited the image from the parent project (based on v3.9) and am currently working on visual theme adjustment - see my recent message (with questions) on this list. Like the parent project, my port cannot save the image. But it can load the image from sdcard, so it can be tweaked on a PC and transferred to the device via USB or WiFi. Devices: I am specifically targeting tablets rather than telephones. My testbed is called "Pandigital Novel eReader" with 9in 800x480 screen, chosen mainly for its low price (~$190) and it was sold physically in a Bed Bath & Beyond store. It is rather slow; I posted my tinyBenchmark results here: http://code.google.com/p/squeakvm-tablet/wiki/TinyBenchmark along with other people's reports found on this mailing list. The device has 256M of RAM, does not seem to run out of memory with Squeak. Is it worth to buy: Well I have a certain problem to solve where low price and tablet form-factor are necessary, so my choice is driven by this. I did some price comparisons, and IMHO (deeply IMHO!!!) decent performance can these days be gotten from ARM devices privced well over $300, but Intel EEE tablets or IdeaPad tablets start in lower $400, and they run usual Windows (or Linux if one prefers to install) and then you can have your regular Squeak/whatever w/o any porting. So YMMV Anyone written apps: maybe I will be one but I haven't written it yet ;) And my problems are kind of specific... Native stuff: not sure if FFI plugin is integrated with this image, however all the VM code is there, so perhaps in some quick and dirty ways manually written plugins could be thrown in... Touch support: I have recently committed code which enables hardware buttons to modify color of mouse for one subsequent click. Such way I was able to do middle (blue) click inside a workspace where 0 tinyBenchmark was typed, select Print-it, and after a while I got the results. I can cause right (yellow) click to bring on halos. I also got soft keyboard to work, but have troubles getting events from the DEL key (looks like I need to subclass the keyboard, or install some special listener in the view, I am not sure yet). In a workspace I typed Morph new openInWorld. did a middle click, selected do-it, and a blue square appeared in the left upper corner of the screen. I was able to move it with my finger (although it disappears while being dragged) to the center of the screen, then I brought up halo and deleted it. Hope I answered all questions ;) Thanks for your interest. -- Dimitry Golubovsky Anywhere on the Web ----- End forwarded message -----

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VM Maker: CMakeVMMaker-IgorStasenko.31.mcz
by squeak-dev-noreply＠lists.squeakfoundation.org 04 Mar '11

04 Mar '11

Igor Stasenko uploaded a new version of CMakeVMMaker to project VM Maker: http://www.squeaksource.com/VMMaker/CMakeVMMaker-IgorStasenko.31.mcz ==================== Summary ==================== Name: CMakeVMMaker-IgorStasenko.31 Author: IgorStasenko Time: 4 March 2011, 12:44:22 pm UUID: 38674921-7d5a-440d-9caf-d8fe7540dacc Ancestors: CMakeVMMaker-IgorStasenko.30 - added CogUnixNoGLConfig

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another blog post
by Eliot Miranda 03 Mar '11

03 Mar '11

Hi All, I've finally published an in-depth blog post on inline cacheing<http://www.mirandabanda.org/cogblog/2011/03/01/build-me-a-jit-as-fast-as-yo…>in the Cog JIT. best Eliot

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problem generating latest unix cog
by Esteban Lorenzano 02 Mar '11

02 Mar '11

Hi, yes... me again, with another "random problem" :) I'm with a friend, Nicolas, trying to compile the latest unix vm. We cloned git@gitorious.org:cogvm/blessed.git We prepared a new image, using ConfigurationOfCog, version 1.3 We generate sources by executing: CMakeGenScripts generateCogSources. CMakeVMGenerator generate: CogUnixConfig. and we tried to compile the vm, using gcc 4.4.3 and we are getting the following error: usr/include/pthread.h:227: note: expected ‘void * (*)(void *)’ but argument is of type ‘void (*)(void *)’ make[2]: *** [CMakeFiles/Cog.dir/home/npasserini/Work/investigacion/mars/blessed/platforms/unix/vm/sqUnixHeartbeat.o] Error 1 make[1]: *** [CMakeFiles/Cog.dir/all] Error 2 make: *** [all] Error 2 Any idea? Igor? Thanks! Esteban

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Deoptimized calls fail in Cog (was Re: [squeak-dev] The Trunk: Compiler-nice.189.mcz)
by Juan Vuletich 02 Mar '11

02 Mar '11

Hi Folks, commits(a)source.squeak.org wrote: > Nicolas Cellier uploaded a new version of Compiler to project The Trunk: > http://source.squeak.org/trunk/Compiler-nice.189.mcz > > ==================== Summary ==================== > > Name: Compiler-nice.189 > Author: nice > Time: 13 February 2011, 7:44:38.363 pm > UUID: 3f6f02cd-1acf-48de-a388-b5ac55e27055 > Ancestors: Compiler-nice.188 > > Enable cascading of special messages by deoptimizing, thanks Eliot. > This is mostly useless, but it removes an arbitrary limitation of the language. > > =============== Diff against Compiler-nice.188 =============== > I integrated this nice code in Cuis, and tried: true ifTrue: [ Transcript cr; show: 'was true' ]; yourself I found that this works ok with the interpreter but does nothing in Cog. A bug, right? Cheers, Juan Vuletich

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Vm-dev March 2011