February 2016 - Pharo-users

Re: [Pharo-users] #ifCurtailed: multi-thread semantics

by Ben Coman

On Mon, Feb 22, 2016 at 11:08 PM, Ben Coman <btc(a)openinworld.com> wrote: > Just a curiousity. I learnt something new today... > #ifCurtailed blocks are processed in the outer most thread. > > Transcript clear; crShow: Processor activeProcess; show:' - outside'. > p1 := > [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. > 1 second wait. > ] ifCurtailed: [ Transcript crShow: Processor activeProcess; > show: ' - curtailed' . ] > ] newProcess priority: 41. > p1 resume. > p1 terminate. > ==> > a Process(304957184) in nil - outside > a Process(680396800) in nil - inside > a Process(304957184) in nil - curtailed > > This makes some sense since (I guess) the inside thread is terminated > before the curtailed block executes. However another curiousity... > > Transcript clear; crShow: Processor activeProcess; show:' - outside'. > p1 := > [ Transcript crShow: Processor activeProcess; show: ' - middle'. > p2 := > [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. > 1 second wait. > ] ifCurtailed: [ Transcript crShow: Processor > activeProcess; show: ' - curtailed' . > 2 seconds wait ] > ] fork. > 3 second wait. > ] newProcess priority: 41. > p1 resume. > p2 terminate. > ==> > a Process(304957184) in nil - outside > a Process(146580480) in nil - middle > a Process(417340928) in nil - inside > a Process(304957184) in nil - curtailed > > ...why does the curtailed block execute in outside thread rather than > the middle thread which still exists? > > Also interesting is that if the curtailed code contains a wait, it > blocks the whole UI. > > cheers -ben > > btw, I added... > Process>>printOn: aStream > super printOn: aStream. > aStream nextPutAll: '(' , self hash printString , ') in '. > suspendedContext printOn: aStream Further curiosity, the #ensure block is executed by the 'inner' process... Transcript clear; crShow: Processor activeProcess; show:' - outside'. p1 := [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. 1 second wait. ] ensure: [ Transcript crShow: Processor activeProcess; show: ' - curtailed' . ] ] newProcess priority: 41. p1 resume. p1 terminate. ==> a Process(959980800) in nil - outside a Process(636470784) in nil - inside a Process(636470784) in nil - curtailed And wrapping an #ensure: around an #ifCurtailed: makes its block be executed by the 'inner' process... Transcript clear; crShow: Processor activeProcess; show:' - outside'. p1 := [ [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. 1 second wait. ] ifCurtailed: [ Transcript crShow: Processor activeProcess; show: ' - curtailed' ] ] ensure: [ Transcript crShow: Processor activeProcess; show: ' - ensure' . ] ] newProcess priority: 41. p1 resume. p1 terminate. ==> a Process(959980800) in nil - outside a Process(663403776) in nil - inside a Process(663403776) in nil - curtailed a Process(663403776) in nil - ensure BUT!!! Huh!?!? The original example now has the curtailed block executed by the 'inside' process... Transcript clear; crShow: Processor activeProcess; show:' - outside'. p1 := [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. 1 second wait. ] ifCurtailed: [ Transcript crShow: Processor activeProcess; show: ' - curtailed' . ] ] newProcess priority: 41. p1 resume. p1 terminate. ==> a Process(959980800) in nil - outside a Process(329852416) in nil - inside a Process(329852416) in nil - curtailed cheers -ben

Feb. 22, 2016

#ifCurtailed: multi-thread semantics

by Ben Coman

Just a curiousity. I learnt something new today... #ifCurtailed blocks are processed in the outer most thread. Transcript clear; crShow: Processor activeProcess; show:' - outside'. p1 := [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. 1 second wait. ] ifCurtailed: [ Transcript crShow: Processor activeProcess; show: ' - curtailed' . ] ] newProcess priority: 41. p1 resume. p1 terminate. ==> a Process(304957184) in nil - outside a Process(680396800) in nil - inside a Process(304957184) in nil - curtailed This makes some sense since (I guess) the inside thread is terminated before the curtailed block executes. However another curiousity... Transcript clear; crShow: Processor activeProcess; show:' - outside'. p1 := [ Transcript crShow: Processor activeProcess; show: ' - middle'. p2 := [ [ Transcript crShow: Processor activeProcess; show: ' - inside'. 1 second wait. ] ifCurtailed: [ Transcript crShow: Processor activeProcess; show: ' - curtailed' . 2 seconds wait ] ] fork. 3 second wait. ] newProcess priority: 41. p1 resume. p2 terminate. ==> a Process(304957184) in nil - outside a Process(146580480) in nil - middle a Process(417340928) in nil - inside a Process(304957184) in nil - curtailed ...why does the curtailed block execute in outside thread rather than the middle thread which still exists? Also interesting is that if the curtailed code contains a wait, it blocks the whole UI. cheers -ben btw, I added... Process>>printOn: aStream super printOn: aStream. aStream nextPutAll: '(' , self hash printString , ') in '. suspendedContext printOn: aStream

Feb. 22, 2016

Re: [Pharo-users] [Pharo-dev] Who is using Pharo Launcher and for what

by Damien Cassou

Tudor Girba <tudor(a)tudorgirba.com> writes: > I use it for writing documentation and blog posts. what is the relationship between Pharo Launcher and your documentation and blog posts? -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." --Winston Churchill

Feb. 22, 2016

Re: [Pharo-users] Smalltalkhub scheduled maintenance today (February, 22nd)

by Christophe Demarey

Smalltalkhub is now back on line! Le 22 fÃ©vr. 2016 Ã 10:59, Christophe Demarey a Ã©crit : > Hello, > > Smalltalk will be down today (february, 22nd) from 12:30 to 13:30 (french local time). > IT will add storage to the root partition (last maintenance finally did not take place). > > Regards, > Christophe

Feb. 22, 2016

Smalltalkhub scheduled maintenance today (February, 22nd)

by Christophe Demarey

Hello, Smalltalk will be down today (february, 22nd) from 12:30 to 13:30 (french local time). IT will add storage to the root partition (last maintenance finally did not take place). Regards, Christophe

Feb. 22, 2016

Re: [Pharo-users] how to import a grammar file into Pharo

by Jen D'Souza

Many thanks! On Sun, Feb 21, 2016 at 4:01 PM, Stephan Eggermont <stephan(a)stack.nl> wrote: > On 21/02/16 22:22, Jen D'Souza wrote: > >> I'd really appreciate if someone could guide me through importing >> PetitIsland.st (http://mucca.inf.usi.ch/source-code.html) into Pharo and >> parsing a text file containing a mix of code and natural language with >> the resulting parser. >> > > Island parsing is now a standard part of the moose image. That is probably > the easiest download to work with. Migrating the other parts of mucca can > be somewhat more work. The web application part of it probably translates > well as it looks like a standard Seaside application. Glorp is available, > I'm not aware of MetaDB, TwoFlower is a simple web browser. In Pharo we > used to have Scamper, but I don't know if that still runs. PetitJava is > loaded in Moose, PetitSTrace should be easy to port. Miller2 is somewhat > larger and might be tightly coupled to VW code. > > Stephan > > > >

Feb. 22, 2016

Re: [Pharo-users] how to import a grammar file into Pharo

by Stephan Eggermont

On 21/02/16 22:22, Jen D'Souza wrote: > I'd really appreciate if someone could guide me through importing > PetitIsland.st (http://mucca.inf.usi.ch/source-code.html) into Pharo and > parsing a text file containing a mix of code and natural language with > the resulting parser. Island parsing is now a standard part of the moose image. That is probably the easiest download to work with. Migrating the other parts of mucca can be somewhat more work. The web application part of it probably translates well as it looks like a standard Seaside application. Glorp is available, I'm not aware of MetaDB, TwoFlower is a simple web browser. In Pharo we used to have Scamper, but I don't know if that still runs. PetitJava is loaded in Moose, PetitSTrace should be easy to port. Miller2 is somewhat larger and might be tightly coupled to VW code. Stephan

Feb. 22, 2016

how to import a grammar file into Pharo

by Jen D'Souza

Greetings all, I'd really appreciate if someone could guide me through importing PetitIsland.st (http://mucca.inf.usi.ch/source-code.html) into Pharo and parsing a text file containing a mix of code and natural language with the resulting parser. Thanks in advance! Jen

Feb. 21, 2016

Re: [Pharo-users] [Pharo-dev] Who is using Pharo Launcher and for what

by Jigyasa Grover

Using Pharo Launcher on Ubuntu for managing images. On Mon, Feb 22, 2016 at 12:54 AM, Serge Stinckwich < serge.stinckwich(a)gmail.com> wrote: > On Sat, Feb 20, 2016 at 11:49 AM, Damien Cassou <damien.cassou(a)inria.fr> > wrote: > > For my CV, I need to know who is using the stuff I'm doing. If you use > > the Pharo Launcher, could you please tell me in which context (e.g., > > which company, open-source project) and what you use it for (e.g., > > download from CI, standard Pharo)? > > > > I don't need long paragraphs, just give me the keywords please. > > PharoLauncher is the cornerstone of my workflow in order to manage all > my Pharo images. > I'm using it everyday for the CORMAS, SciSmalltalk, Kendrick and A4BP > projects in order to download new images from the CI. > Thank you Damien. > > -- > Serge Stinckwich > UCBN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ > >

Feb. 21, 2016

Re: [Pharo-users] [Pharo-dev] Who is using Pharo Launcher and for what

by Serge Stinckwich

On Sat, Feb 20, 2016 at 11:49 AM, Damien Cassou <damien.cassou(a)inria.fr> wrote: > For my CV, I need to know who is using the stuff I'm doing. If you use > the Pharo Launcher, could you please tell me in which context (e.g., > which company, open-source project) and what you use it for (e.g., > download from CI, standard Pharo)? > > I don't need long paragraphs, just give me the keywords please. PharoLauncher is the cornerstone of my workflow in order to manage all my Pharo images. I'm using it everyday for the CORMAS, SciSmalltalk, Kendrick and A4BP projects in order to download new images from the CI. Thank you Damien. -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

Feb. 21, 2016