March 2011 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Pharo on top of Flash plugin

by Mariano Martinez Peck

On Mon, Mar 7, 2011 at 1:29 PM, Alexandre Jasmin <alexandre.jasmin(a)gmail.com > wrote: > >> Your image helps me a lot. > >> > >> I'm trying to get the Squeak VM compiling with Adobe Alchemy. > > > > tell us more :) > > I'm exploring ways to use Smalltalk inside a web page. > > There are already few interesting Javascript converters and Smalltalk > inspired projects like the Clamato and the Lively Kernel. But it'd be > nice to run unchanged code from Pharo or Squeak directly. > > The simplest way to bring Pharo on the web would be to run the existing VM > inside a web page. The Squeak plug-in does that already but good luck > getting anyone to install it. > > There are at least two solutions aiming to bring native code to the web > without installing plug-ins > - Google Native Client provides a sandboxed environment for x86 code > - Alchemy (a research project at Adobe) compiles C into the bytecode > language interpreted by Flash. > > Since Flash seems to have wider adoption than Native Client I'm doing a > little experiment with it. I just took the VMMaker generated C code for > the Squeak VM and passed it through the Alchemy compiler to get something > that runs on top of the Flash plug-in. > > It's too soon to tell if this kind of nested VM is really usable. > Performance will undoubtedly be an issue but I can at least run the Hazel > image and have it beep in a loop which is encouraging. > > It seems Flash also supports some dynamic class loading which could > enable performance improvements but the execution model while a bit > better than Javascript doesn't really compare with Smalltalk. I don't see > how we could support continuations for the debugger with pure AVM bytecode > for instance. Anyways just recompiling the existing interpreter with > Alchemy compiler requires a minimum of work so I'm focusing on that now. > > Will let you know how it goes. > > Really interesteing. Keep us informed!

March 7, 2011

Re: [Pharo-project] OSProcess

by David T. Lewis

I do not know if it applies here, but the plugins might not be interchangeable between Cog and the standard VM. The interpreter proxy interfaces are different, and oscog has changes to an internal data structure in the file plugin then might cause problems. I have not looked at it in detail, so just be aware that there could be problems if you use a plugin from the standard VM with cog or vice versa. Also, IIRC there were some earlier OS X VMs (maybe 5.7.4???) that accidently contained a very old OSPP version, and this version could also lead to a crash on OS X. Dave On Mon, Mar 07, 2011 at 05:14:48PM +0100, St?phane Ducasse wrote: > Thanks a lot > I copied in the resources folder of 5.7.4 > It crashes. > Estaban if you want to get an image crashing: > > Gofer new > squeaksource: 'Coral'; > package: 'ConfigurationOfCoral'; > load > > and (ConfigurationOfCoral project version: '0.4') load > as explained in the class comment. > > Stef > > > > On Mar 7, 2011, at 5:00 PM, Esteban Lorenzano wrote: > > > Hi Stef, > > I'm attaching a plugin compiled that *should* work with 5.7.4 > > Please, let me know if it is not the case, and I'll try a fix :) > > > > Cheers, > > Esteban > > > > <UnixOSProcessPlugin.bundle.zip> > > > > > > El 07/03/2011, a las 12:17p.m., St?phane Ducasse escribi?: > > > >> I tried Squeak4.2.5Beta1U and when I run the tests I get > >> forkSqueak requires XDisplayControlPlugin > >> So it seems that I will not be able to run Coral. > >> > >> Stef > >> > >> > >>> Thanks david > >>> > >>> Apparently my vm does not have any plugin. > >>> I tried to copy the plugin from 4 version to 5.7.3 and 5.7.4 > >>> and apparently when I open an image with OSProcess 4.4.0 > >>> the system crashes. I will try to find a mac vm with plugins. > >>> But if somebody knows it, this is an information I'm looking for. > >>> Stef > >>> > >>> > >>> On Mar 7, 2011, at 2:38 PM, David T. Lewis wrote: > >>> > >>>> On Mon, Mar 07, 2011 at 11:44:11AM +0100, St?phane Ducasse wrote: > >>>>> Hi guys > >>>>> > >>>>> I'm updtating the ConfigurationOfCoral and I loaded > >>>>> > >>>>> > >>>>> baseline > >>>>> > >>>>> spec project: 'OSProcess' with: [ > >>>>> spec > >>>>> className: 'ConfigurationOfOSProcess'; > >>>>> file: 'ConfigurationOfOSProcess'; > >>>>> version: '4.4.0'; > >>>>> repository: 'http://www.squeaksource.com/OSProcess' ]. > >>>>> > >>>>> > >>>>> version > >>>>> > >>>>> spec for: #'common' do: [ > >>>>> spec > >>>>> package: 'Filesystem' with: 'Filesystem-DamienPollet.114'; > >>>>> project: 'OSProcess' with: '4.4.0'; > >>>>> package: 'AST-Core' with: 'AST-Core-lr.87'; > >>>>> package: 'PetitParser' with: 'PetitParser-TudorGirba.209'; > >>>>> package: 'PetitTest' with: 'PetitTests-TudorGirba.28'; > >>>>> package: 'PetitSmaltalk' with: 'PetitSmalltalk-lr.46'.] > >>>>> > >>>>> and when I run the test I get accessor error. > >>>>> > >>>>> Any idea what would be problem? > >>>>> The VM? > >>>>> > >>>>> I use 5.7b3 > >>>> > >>>> Hi Stef, > >>>> > >>>> This probably just means that your VM does not have OSProcessPlugin. > >>>> Try inspecting "OSProcess thisOSProcess" and if the pid is nil, it > >>>> means that you do not have the plugin. > >>>> > >>>> Dave > >>>> > >>>> > >>> > >>> > >> > >> > > >

March 7, 2011

[Pharo-project] Fwd: [SqueakDBX] Simple object pool 0.1.1 "released".

by Mariano Martinez Peck

Thanks Panu. This is awesome. We will integrate your info in our website!! :) mariano ---------- Forwarded message ---------- From: Panu Suominen <panu.j.m.suominen(a)gmail.com> Date: Mon, Mar 7, 2011 at 8:28 AM Subject: [SqueakDBX] Simple object pool 0.1.1 "released". To: The complete and open-source solution to relational database access < squeakdbx(a)lists.squeakfoundation.org> Long time ago I mailed that I have started to build new pooling solution for objects because I could not find existing one with tests. Then I promised to improve documentation. It has taken quite long time but now I have created minimal documentation that should enable people to try my implementation. Currenlty it is nothing spectacular. Project can be found at http://www.squeaksource.com/ObjectPool.html the wiki there should get you started. If one has loaded GlorpDBX one could start using pool with following code to start pooling SqueakDBX connections: Gofer new squeaksource:'ObjectPool'; package:'ConfigurationOfObjectPool'; load. ((Smalltalk at: #ConfigurationOfObjectPool) project version:'0.1.1') load:#('default' 'dbx'). SqueakDatabaseAccessor DefaultDriver: OPSqueakDBXDriver. Currently OPSqueakDBXDriver does not restrict the amount of active or pooled connections. I will improve that soon. One can load basic pooling implementation without DBX-related stuff by just executing: ((Smalltalk at: #ConfigurationOfObjectPool) project version:'0.1.1') load. -- Panu _______________________________________________ SqueakDBX mailing list SqueakDBX(a)lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/squeakdbx

March 7, 2011

[Pharo-project] SmalltalkEcole: Slides of Today

by Marcus Denker

Hi, Igors slides are now available: FFI: http://dl.dropbox.com/u/2753738/About%20FFI.key.pdf JourneyInTheVM: http://dl.dropbox.com/u/2753738/JourneyInTheVM.key.pdf -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

March 7, 2011

Re: [Pharo-project] what's happened to the blogger group?

by Dmitri Zagidulin

Hey guys, I've been a bit AWOL the last couple of weeks, family emergency. I was JUST going to say, though - Francois is doing an amazing job with his weekly summaries, much more in-depth than I was planning to. So I highly second the suggestion of creating an account for him. :) Dmitri On Sun, Mar 6, 2011 at 6:21 AM, Adrian Lienhard <adi(a)netstyle.ch> wrote: > > On Mar 6, 2011, at 12:09 , Geert Claes wrote: > >> Francois has posted another nice weekly summary on his blog at >> http://articles.tulipemoutarde.be Â For visibility I thought Dmitri and >> Farncois were to be given access to the Pharo website so they can post on >> the Pharo news/blg area too? > > Yes. I've created an account on our website for Dmitri. And I'll gladly create one for Farncois too (or anybody else who would like to take responsibility for posting news to the website). > > Cheers, > Adrian >

March 7, 2011

[Pharo-project] [COTDC] 27 - DropEvent

by laurent laffont

Today: DropEvent Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

March 7, 2011

Re: [Pharo-project] [COTDC] 26 - PickAFileToWriteNotification

by laurent laffont

Indeed there's no reference in Pharo. In Squeak it is used by PostscriptEncoderToDisk and DSCPostscriptCanvasToDisk which don't exist in Pharo. So I suppose that it can be safely removed. Thanks Fernando & Carlo (I like the code snippet). Laurent. On Mon, Mar 7, 2011 at 1:13 AM, Carlo <snoobabk(a)yahoo.ie> wrote: > I provide a way to indicate that an object would like a file to write to. > > You can use me as follows: > | file | > [file := PickAFileToWriteNotification signal. file inspect] on: > PickAFileToWriteNotification do: [:ex | | newFileName stream | newFileName > := FillInTheBlankMorph request: 'Name of file to write:' translated > initialAnswer: 'xxx'. stream := FileStream fileNamed: newFileName. stream > ifNotNil: [ex resume: stream]] > > > On 06 Mar 2011, at 11:29 PM, laurent laffont wrote: > > Today: PickAFileToWriteNotification > > > Comment Of The Day Contest - One Day One Comment > Rules: > #1: Each day a not commented class is elected. Each day the best comment > will be integrated with name of the author(s). > #2: If you cannot comment it, deprecate it. > Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest > > Laurent > >

March 7, 2011

Re: [Pharo-project] Assert SystemWindow not visible

by laurent laffont

On Mon, Mar 7, 2011 at 11:53 AM, Gary Chambers <gazzaguru2(a)btinternet.com>wrote: > If you don't care whether the window had been opened at all then > sending #isInWorld to the window is another approach. > Cool one ! Laurent. > > Regards, Gary > > ----- Original Message ----- > *From:* laurent laffont <laurent.laffont(a)gmail.com> > *To:* Pharo-project(a)lists.gforge.inria.fr > *Sent:* Wednesday, March 02, 2011 12:37 PM > *Subject:* Re: [Pharo-project] Assert SystemWindow not visible > > Thank you Henry, good example. > > Laurent. > > On Wed, Mar 2, 2011 at 10:35 AM, Henrik Sperre Johansen < > henrik.s.johansen(a)veloxit.no> wrote: > >> >> Henrik Sperre Johansen wrote: >> > >> > >> > window announcer when: WindowClosed do: [closed := false]. >> > window openInWorld delete. >> > self assert: closed. >> > >> > >> meant to write [closed := true], of course :) >> >> Cheers, >> Henry >> >> -- >> View this message in context: >> http://forum.world.st/Assert-SystemWindow-not-visible-tp3330492p3331232.html >> Sent from the Pharo Smalltalk mailing list archive at Nabble.com. >> >> >

March 7, 2011

Re: [Pharo-project] Bigger cursor

by Gary Chambers

Ditto on our Pharo1.2 MBagger deployment... Regards, Gary ----- Original Message ----- From: "Hilaire Fernandes" <hilaire.fernandes(a)gmail.com> To: <pharo-project(a)lists.gforge.inria.fr> Sent: Monday, March 07, 2011 5:00 PM Subject: Re: [Pharo-project] Bigger cursor > Me I have a primitive fail on linux > > Other can confirm? > > Hilaire > > Le 07/03/2011 17:48, Gary Chambers a Ã©crit : >> I wonder why there is no immediate response when a button is pressed... >> (Windows VM, at least). >> >> Not down to the #waitButton, as far as I can tell. >> Perhaps the event loop is being partially starved by the delay, quite >> odd. >> >> Regards, Gary >> >> ----- Original Message ----- From: "Torsten Bergmann" >> <astares(a)gmx.de> >> To: <pharo-project(a)lists.gforge.inria.fr> >> Sent: Monday, March 07, 2011 4:34 PM >> Subject: [Pharo-project] Bigger cursor >> >> >>> Or directly try: >>> >>> "CursorWithAlpha biggerNormal showWhile:[Sensor waitButton]" >>> >>> Look at the method #biggerNormal how to encode an own. >>> >>> >>> -- >>> NEU: FreePhone - kostenlos mobil telefonieren und surfen! Jetzt >>> informieren: http://www.gmx.net/de/go/freephone >>> >> >> > > > -- > Education 0.2 -- http://blog.ofset.org/hilaire > >

March 7, 2011

Re: [Pharo-project] [Pharo-users] Pharocasts: Build a XML browser

by laurent laffont

On Mon, Mar 7, 2011 at 4:47 PM, Tudor Girba <tudor.girba(a)gmail.com> wrote: > Hi, > > Nice. > > Just for comparison, I created a counter part demo for the browser building > part using Glamour: > http://www.tudorgirba.com/blog/simple-xml-browser-with-glamour Cool ! I've updated PharoCasts to link on your demo. (oh, and can't wait your screencasts on Moose ;) Laurent. > > > Cheers, > Doru > > > On 6 Mar 2011, at 22:31, laurent laffont wrote: > > > Watch this to learn how to: > > - get and parse XML > > - use Polymorph to build a GUI with a tree and text editor > > - add a button in Pharo IDE to open the XML browser > > - control when your breakpoints will trigger > > > > see http://www.pharocasts.com/2011/03/build-xml-browser.html > > > > > > Laurent Laffont - @lolgzs > > > > Pharo Smalltalk Screencasts: http://www.pharocasts.com/ > > Blog: http://magaloma.blogspot.com/ > > -- > www.tudorgirba.com > > "Beauty is where we see it." > > > > >

March 7, 2011