September 2014 - Pharo-users

Re: [Pharo-users] Calling Pharo from C

by Ronie Salgado

> FFI - Not sure > Alien - Not sure > NativeBoost - Yes One thing is receiving a callback from C. In this case, NativeBoost is the one with the worst end-user API. Another thing, is being able to embed the VM in a C application, and then call the VM explicitly from the application. In this case, there is not efficient support at all. The closest thing would be spawning the VM in a different process, and then "perform calls" via a socket. Greetings, Ronie 2014-09-19 20:42 GMT-03:00 Pierce Ng <pierce(a)samadhiweb.com>: > On Thu, Sep 18, 2014 at 10:05:51PM +0200, Annick Fron wrote: > > Is it possible to call pharo from C ? > > FFI - Not sure > Alien - Not sure > NativeBoost - Yes > > Simple example here: > > http://www.samadhiweb.com/blog/2014.08.02.c.callback.smalltalk.html > > > Pierce > >

Sept. 19, 2014

Re: [Pharo-users] Calling Pharo from C

by Pierce Ng

On Thu, Sep 18, 2014 at 10:05:51PM +0200, Annick Fron wrote: > Is it possible to call pharo from C ? FFI - Not sure Alien - Not sure NativeBoost - Yes Simple example here: http://www.samadhiweb.com/blog/2014.08.02.c.callback.smalltalk.html Pierce

Sept. 19, 2014

Re: [Pharo-users] Preorder tree traversal

by phil＠highoctane.be

Check the FileSystem guides: Preorder is in there. Look at GuideTest and PreorderGuideTest for a starting point. Phil â

Sept. 19, 2014

Re: [Pharo-users] Booting into Pharo!

by kilon alios

I am impressed.... :) So much potential here , lovely. On Sat, Sep 20, 2014 at 12:21 AM, Javier PimÃ¡s <elpochodelagente(a)gmail.com> wrote: > > > On Fri, Sep 19, 2014 at 4:41 PM, kilon alios <kilon.alios(a)gmail.com> > wrote: > >> I seriously doubt that SqueakNOS uses smalltalk to program the drivers >> > > Actually, it does. The thing is that most drivers can be written in > Smalltalk and glued with very very little assembly. 3 years ago, during our > MSc thesis we added drivers to support virtual memory management and hard > drives, all of them in smalltalk. In the end, the only assembly required > was for I/O, for accesing special processor registers like CR0 and CR3 and > to bind a function address to a Smalltalk block (callbacks). All of this > was abstracted into primitives and managed at image side. > > Cheers! > Javier > > > >> >> On Fri, Sep 19, 2014 at 10:36 PM, Mayuresh Kathe <mayuresh(a)kathe.in> >> wrote: >> >>> Yes, that's something I would have loved to have, a single language to >>> program everything, right from the drivers to user interface and >>> applications. >>> >>> SqueakNOS looks very interesting, but still is way behind a combination >>> of Linux kernel + X + Pharo in terms of hardware support and maturity. >>> >>> Also, in case you didn't know, there was an effort made to run Squeak >>> directly on bare metal (Mitsubishi M32R/D) which worked like a charm, but >>> has been suppressed for unknown reasons. >>> >>> ~Mayuresh >>> >>> >>> >>> On 2014-09-20 01:00, Torsten Bergmann wrote: >>> >>>> The idea is to build a minimalist Linux based system which would boot up >>>>> straight into a full-screen Pharo environment. >>>>> >>>> >>>> Why use a Linux underneath when you can do it in Smalltalk ;) >>>> >>>> Look at SqueakNOS - an operating system that was/still is able to >>>> boot from disk right into Squeak: >>>> >>>> http://wiki.squeak.org/squeak/1762 >>>> >>>> Accessing devices/writing drivers in Smalltalk, etc. >>>> >>>> Would like to know if it's some how possible to control external >>>>> programs from within Pharo, essentially shell scripts for network >>>>> setup, >>>>> etc. >>>>> >>>> >>>> Check out the "OSProcess" package in Pharo. >>>> >>>> Bye >>>> T. >>>> >>> >>> >> > > > -- > Javier PimÃ¡s > Ciudad de Buenos Aires >

Sept. 19, 2014

Re: [Pharo-users] Where pharo stores its selfies?

by Offray Vladimir Luna CÃ¡rdenas

Thanks Phil and Torsten for your detailed answer and taking care of filling out the bug. I will follow your advice. Cheers, Offray On 09/19/2014 11:07 AM, phil(a)highoctane.be wrote: > > As a side note, open the file browser from the world menu, it should open on > that very folder. > > Or FileList open. in a Workspace. > > Then when you pick a png there (PharoScreenshot.png for example ^_^) you can > right click and say "Open Graphic in a Window". > > > > Phil > > > > On Fri, Sep 19, 2014 at 5:07 PM, Torsten Bergmann <astares(a)gmx.de > <mailto:astares@gmx.de>> wrote: > > Offray wrote: > >> I'm taking somescreenshots of Pharo using the functionality provided by > Pharo itself to make this. It seems that >screenshot is properly saved, but > there is no indication about where is stored. Could someone point me the place? > > Yes this is confusing. I opened an issue and fixed this for Pharo 4.0. See > details > and screenshot in: > > https://pharo.fogbugz.com/f/cases/14044/Selfies-shot-with-Pharo-should-give… > > Bye > T. > > >

Sept. 19, 2014

Preorder tree traversal

by Offray Vladimir Luna CÃ¡rdenas

Hi, I have a tree object structure, in a project and I'm wondering if there is a code or method that I can use to make a preorder tree traversal on it. I have seen the one that is the book Inside Smalltalk Vol 1, but I don't know if there is something in the image or elsewhere that can be used without much/any reimplementation. So, any pointer to a solution? Thanks, Offray

Sept. 19, 2014

Re: [Pharo-users] Booting into Pharo!

by Javier PimÃ¡s

On Fri, Sep 19, 2014 at 4:41 PM, kilon alios <kilon.alios(a)gmail.com> wrote: > I seriously doubt that SqueakNOS uses smalltalk to program the drivers > Actually, it does. The thing is that most drivers can be written in Smalltalk and glued with very very little assembly. 3 years ago, during our MSc thesis we added drivers to support virtual memory management and hard drives, all of them in smalltalk. In the end, the only assembly required was for I/O, for accesing special processor registers like CR0 and CR3 and to bind a function address to a Smalltalk block (callbacks). All of this was abstracted into primitives and managed at image side. Cheers! Javier > > On Fri, Sep 19, 2014 at 10:36 PM, Mayuresh Kathe <mayuresh(a)kathe.in> > wrote: > >> Yes, that's something I would have loved to have, a single language to >> program everything, right from the drivers to user interface and >> applications. >> >> SqueakNOS looks very interesting, but still is way behind a combination >> of Linux kernel + X + Pharo in terms of hardware support and maturity. >> >> Also, in case you didn't know, there was an effort made to run Squeak >> directly on bare metal (Mitsubishi M32R/D) which worked like a charm, but >> has been suppressed for unknown reasons. >> >> ~Mayuresh >> >> >> >> On 2014-09-20 01:00, Torsten Bergmann wrote: >> >>> The idea is to build a minimalist Linux based system which would boot up >>>> straight into a full-screen Pharo environment. >>>> >>> >>> Why use a Linux underneath when you can do it in Smalltalk ;) >>> >>> Look at SqueakNOS - an operating system that was/still is able to >>> boot from disk right into Squeak: >>> >>> http://wiki.squeak.org/squeak/1762 >>> >>> Accessing devices/writing drivers in Smalltalk, etc. >>> >>> Would like to know if it's some how possible to control external >>>> programs from within Pharo, essentially shell scripts for network setup, >>>> etc. >>>> >>> >>> Check out the "OSProcess" package in Pharo. >>> >>> Bye >>> T. >>> >> >> > -- Javier PimÃ¡s Ciudad de Buenos Aires

Sept. 19, 2014

Re: [Pharo-users] Booting into Pharo!

by Esteban Lorenzano

On 19 Sep 2014, at 22:23, kilon alios <kilon.alios(a)gmail.com> wrote: > via Slang ? nope. no compilations. pure smalltalk. after allâ¦ a compiler just translates some code into binary codeâ¦. if you can do that directlyâ¦ why would you need a compiler? > > On Fri, Sep 19, 2014 at 11:05 PM, Hilaire <hilaire(a)drgeo.eu> wrote: > Le 19/09/2014 21:41, kilon alios a Ã©crit : > I seriously doubt that SqueakNOS uses smalltalk to program the drivers > > > it does/did. > > -- > Dr. Geo - http://drgeo.eu > iStoa - http://istao.drgeo.eu > > >

Sept. 19, 2014

Re: [Pharo-users] Booting into Pharo!

by kilon alios

via Slang ? On Fri, Sep 19, 2014 at 11:05 PM, Hilaire <hilaire(a)drgeo.eu> wrote: > Le 19/09/2014 21:41, kilon alios a Ã©crit : > >> I seriously doubt that SqueakNOS uses smalltalk to program the drivers >> >> > it does/did. > > -- > Dr. Geo - http://drgeo.eu > iStoa - http://istao.drgeo.eu > > >

Sept. 19, 2014

Re: [Pharo-users] Booting into Pharo!

by Hilaire

Le 19/09/2014 21:41, kilon alios a Ã©crit : > I seriously doubt that SqueakNOS uses smalltalk to program the drivers > it does/did. -- Dr. Geo - http://drgeo.eu iStoa - http://istao.drgeo.eu

Sept. 19, 2014