March 2020 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Pharo on a chromebook?

by tbrunz

Hi Paul, It *is* possible! I've got it running on one of my Chromebooks, a Pixelbook model. (I gave my 2015 Pixel LS to my wife; I've yet to try it on that one.) See the attached image. You'll likely need to install a Linux container, which is how I got it to work. (I didn't try to get it running in the native Linux OS, which I believe is a modified Gentoo.) You can have an icon associated with it; if you do, you can pin it to your icon tray and launch Pharo that way -- which is what I do. (You should be able to see the icon in my image.) I have a script that generates a '.desktop' file with an icon, which is how I think I got this to work. (I'm about to rewrite the script; the first attempt was a hack extracted from a script suite I wrote, and Pharo deserves better.) One thing you'll want to do is correct for the 4K display. I have a script that automates enlarging the pointer arrow at https://github.com/tbrunz/pharo-support (which also has the above-mentioned script), but I just finished it and haven't yet tested it on a Chromebook install. -Ted <http://forum.world.st/file/t372161/Pharo-in-Chromebook_2019-0127a.jpg> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

March 31, 2020

Re: [Pharo-users] Ballooning image size! Approaching 400MB

by Russ Whaley

Here is some additional data - attached - I checked the number of instances on select Classes before a UI load, during the UI load and after the UI load (and again). The class instances grow as expected, but do no release. I'm doing something wrong. I'm going to try a fresh image next, however, I expect the same thing to happen, just starting over at zero. On Tue, Mar 31, 2020 at 12:57 PM Russ Whaley <whaley.russ(a)gmail.com> wrote: > Dario, > Thanks for the reply! > > When I closed my image - after running that huge query and leaving it in > an inspector... my image grew to 1.3GB, lol. > > When I closed the inspector, and all the class browsers, did the garbage > collection, etc., it dropped back to 384MB. Still huge, and all my Class > instances are still there. I'm getting ready to also drop my Playground - > after I copy all the code snippets out and see if that has any impact. I'm > also going to try a fresh image and see if there is the same growth pattern > as here. > > Perhaps I'm doing something wrong with the way I'm creating and storing my > object instances - which is generally Class new, fill out some attributes, > then add it to a collection or Dictionary. > > All my Object tests create sample data (objects) - over and over as well. > > > On Tue, Mar 31, 2020 at 12:20 PM dario.trussardi65 < > dario.trussardi65(a)gmail.com> wrote: > >> Ciao, >> >> >> > My image size keeps growing and growing. I've been scouring Google and >> mailing lists, trying to find a solution. >> >> i have the same problem with a Pharo 7 image. >> >> Maybe it has nothing to do. >> >> But after close all the class browser windows the image save >> return to a " valid " size. >> >> Dario >> > > > -- > Russ Whaley > whaley.russ(a)gmail.com > -- Russ Whaley whaley.russ(a)gmail.com

March 31, 2020

Pharo on a chromebook?

by PAUL DEBRUICKER

Forgive my ignorance but does anyone have a recipe to run Pharo on a Chromebook? Without having to install another OS. And also not with SqueakJS. Just on ChromeOS? Seems like its not possible. Just wanted to double check. thanks Paul

March 31, 2020

Re: [Pharo-users] Ballooning image size! Approaching 400MB

by Russ Whaley

Dario, Thanks for the reply! When I closed my image - after running that huge query and leaving it in an inspector... my image grew to 1.3GB, lol. When I closed the inspector, and all the class browsers, did the garbage collection, etc., it dropped back to 384MB. Still huge, and all my Class instances are still there. I'm getting ready to also drop my Playground - after I copy all the code snippets out and see if that has any impact. I'm also going to try a fresh image and see if there is the same growth pattern as here. Perhaps I'm doing something wrong with the way I'm creating and storing my object instances - which is generally Class new, fill out some attributes, then add it to a collection or Dictionary. All my Object tests create sample data (objects) - over and over as well. On Tue, Mar 31, 2020 at 12:20 PM dario.trussardi65 < dario.trussardi65(a)gmail.com> wrote: > Ciao, > > > > My image size keeps growing and growing. I've been scouring Google and > mailing lists, trying to find a solution. > > i have the same problem with a Pharo 7 image. > > Maybe it has nothing to do. > > But after close all the class browser windows the image save > return to a " valid " size. > > Dario > -- Russ Whaley whaley.russ(a)gmail.com

March 31, 2020

Re: [Pharo-users] Ballooning image size! Approaching 400MB

by Richard Sargent

On Tue, Mar 31, 2020 at 9:25 AM Russ Whaley <whaley.russ(a)gmail.com> wrote: > Sven, > Thanks for the reply :) > > I will try to move my code over to another image (I'm not very good with > GitHub - we'll see how this goes). > > But it just seems like there ought to be a way to at least delete all of > these instances - as they are pretty easy to get ahold of (Class > allInstancesDo:). But I can't find a way to delete them. I can count > them, I can display content - attached is a screenshot showing for each > Album instance, I can display it and data from it's embedded Artist and > collection of Tracks. > Russ, this kind of thing is a common occurrence in Smalltalk GUI applications. In my experience, it is often dangling dependencies resulting in things being held. The reference in question might be to the model itself or to some particular subset which also happens to include a back reference to the whole model. These dependencies typically are installed as event handlers in the GUI. It's common to establish a dependency but fail to release it. In your first message, you listed the major classes of your model. Get the object counts for each. Close the application UI (not Pharo) and re-open it. Run the counts again. You will probably see the root model instance count increase by one. I don't work with Pharo, so I cannot give you specific guidance for tracking these down. I'm certain others can explain GUI dependencies and dangling references in the Pharo environment, to give you more focussed guidance. > Attached are a couple of screen shots of the 'query' I mentioned in my > previous note... as you can see - Tracks, Albums, (FileReference is my > fault, also - I use those to hand music files to my objects for processing. > Those are hanging around as well). > > On Tue, Mar 31, 2020 at 11:13 AM Sven Van Caekenberghe <sven(a)stfx.eu> > wrote: > >> Hi Russ, >> >> It is quite hard to debug somebody else's application, especially without >> access to the code, but here are some suggestions of what I would do. >> >> Can you move your code to a new/fresh image and see what happens there >> (especially after just one iteration of loading your data) ? >> >> Is there a difference between loading your data and opening your app with >> respect to the retention of garbage ? This would help to determine if this >> is a UI problem or a domain model problem. >> >> There are tools that help you to figure out who holds a specific object >> ('Reverse pointers to' in the Inspector) but these are not so easy to use >> (you get lots of data). >> >> Sven >> >> > On 31 Mar 2020, at 16:55, Russ Whaley <whaley.russ(a)gmail.com> wrote: >> > >> > My image size keeps growing and growing. I've been scouring Google and >> mailing lists, trying to find a solution. >> > >> > Observables: >> > â¢ Running this 'query' shows I have a whole lot instances of >> Objects I've created that are not "releasing". There are 65000 instances of >> one Object/Class, and 350,000 of another. (there are more, these are just >> the big hitters). >> > (Object allSubclasses collect: [ :aClass | >> > aClass -> aClass allInstances size]) >> > sort: [ :a :b | a value > b value ]. >> > â¢ Each time I load my app/UI - which creates/loads another 5000 >> of one object and 25,000 of the 2nd object - my Class>>instanceCount(s) >> keep growing and so does my image size. >> > â¢ I've done: >> > â¢ Smalltalk garbageCollect. >> > â¢ Smalltalk garbageCollectMost. >> > â¢ 10 timesRepeat: [ Smalltalk garbageCollect]. (many, >> many times) >> > Somehow, these instances I create are not 'releasing'. All of my >> Classes are direct subclasses of Object. Interestingly enough, all these >> objects sit in a single collection for the high-level model - and there are >> only 67 instances of that Object... here's the hierarchy: >> > >> > MyTunes - instance holds a Dictionary of Libraries, rootFolder and tags >> collection >> > Library - instance(s) hold Dictionary of Artists & Playlists, tags >> collection, and MyTunes reference >> > Artist - instances hold Dictionary of Albums, and Library reference >> > Album - instances hold Dictionary of Tracks, and Artist reference >> > Track - instances hold TagInfo, Album reference >> > TagInfo - instances hold fileReference and ByteString of ID3 tag info. >> > PlayList - instances hold Dictionary of Tracks, Library reference. >> > >> > Here's my start code in my app... (I don't know how to use >> SpApplication, SpPresenter and my model(s) together - this may be part of >> the problem).. >> > >> > start >> > "Override this to start your app" >> > "*** I don't know how to use SpApplicatoin, SpPresenter and my model >> MyTunes ***" >> > >> > | myTunes tmpLibrary myPres | >> > >> > "where do I store the model -> MyTunes?" >> > myTunes := MyTunes new. >> > >> > "this is just for testing, but the actual re-load of the library takes >> 15-20 minutes (60,000 files!)" >> > tmpLibrary := myTunes readLibraryFromSTONfile. >> > myTunes addLibrary: tmpLibrary. >> > >> > "where do I store the presenter -> MyTunesPresenter? " >> > myPres := MyTunesPresenter on: tmpLibrary. >> > myPres openWithSpec. >> > >> > While I'd love help with my App/Pres/Model - my first goal is to stop >> the rapid growth of my object. >> > >> > Questions? >> > >> > Thanks! >> > Russ Whaley (USA, Ohio) >> > >> > -- >> > Russ Whaley >> > whaley.russ(a)gmail.com >> >> >> > > -- > Russ Whaley > whaley.russ(a)gmail.com >

March 31, 2020

Re: [Pharo-users] Ballooning image size! Approaching 400MB

by Russ Whaley

Sven, Thanks for the reply :) I will try to move my code over to another image (I'm not very good with GitHub - we'll see how this goes). But it just seems like there ought to be a way to at least delete all of these instances - as they are pretty easy to get ahold of (Class allInstancesDo:). But I can't find a way to delete them. I can count them, I can display content - attached is a screenshot showing for each Album instance, I can display it and data from it's embedded Artist and collection of Tracks. Attached are a couple of screen shots of the 'query' I mentioned in my previous note... as you can see - Tracks, Albums, (FileReference is my fault, also - I use those to hand music files to my objects for processing. Those are hanging around as well). On Tue, Mar 31, 2020 at 11:13 AM Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Hi Russ, > > It is quite hard to debug somebody else's application, especially without > access to the code, but here are some suggestions of what I would do. > > Can you move your code to a new/fresh image and see what happens there > (especially after just one iteration of loading your data) ? > > Is there a difference between loading your data and opening your app with > respect to the retention of garbage ? This would help to determine if this > is a UI problem or a domain model problem. > > There are tools that help you to figure out who holds a specific object > ('Reverse pointers to' in the Inspector) but these are not so easy to use > (you get lots of data). > > Sven > > > On 31 Mar 2020, at 16:55, Russ Whaley <whaley.russ(a)gmail.com> wrote: > > > > My image size keeps growing and growing. I've been scouring Google and > mailing lists, trying to find a solution. > > > > Observables: > > â¢ Running this 'query' shows I have a whole lot instances of > Objects I've created that are not "releasing". There are 65000 instances of > one Object/Class, and 350,000 of another. (there are more, these are just > the big hitters). > > (Object allSubclasses collect: [ :aClass | > > aClass -> aClass allInstances size]) > > sort: [ :a :b | a value > b value ]. > > â¢ Each time I load my app/UI - which creates/loads another 5000 of > one object and 25,000 of the 2nd object - my Class>>instanceCount(s) keep > growing and so does my image size. > > â¢ I've done: > > â¢ Smalltalk garbageCollect. > > â¢ Smalltalk garbageCollectMost. > > â¢ 10 timesRepeat: [ Smalltalk garbageCollect]. (many, many > times) > > Somehow, these instances I create are not 'releasing'. All of my > Classes are direct subclasses of Object. Interestingly enough, all these > objects sit in a single collection for the high-level model - and there are > only 67 instances of that Object... here's the hierarchy: > > > > MyTunes - instance holds a Dictionary of Libraries, rootFolder and tags > collection > > Library - instance(s) hold Dictionary of Artists & Playlists, tags > collection, and MyTunes reference > > Artist - instances hold Dictionary of Albums, and Library reference > > Album - instances hold Dictionary of Tracks, and Artist reference > > Track - instances hold TagInfo, Album reference > > TagInfo - instances hold fileReference and ByteString of ID3 tag info. > > PlayList - instances hold Dictionary of Tracks, Library reference. > > > > Here's my start code in my app... (I don't know how to use > SpApplication, SpPresenter and my model(s) together - this may be part of > the problem).. > > > > start > > "Override this to start your app" > > "*** I don't know how to use SpApplicatoin, SpPresenter and my model > MyTunes ***" > > > > | myTunes tmpLibrary myPres | > > > > "where do I store the model -> MyTunes?" > > myTunes := MyTunes new. > > > > "this is just for testing, but the actual re-load of the library takes > 15-20 minutes (60,000 files!)" > > tmpLibrary := myTunes readLibraryFromSTONfile. > > myTunes addLibrary: tmpLibrary. > > > > "where do I store the presenter -> MyTunesPresenter? " > > myPres := MyTunesPresenter on: tmpLibrary. > > myPres openWithSpec. > > > > While I'd love help with my App/Pres/Model - my first goal is to stop > the rapid growth of my object. > > > > Questions? > > > > Thanks! > > Russ Whaley (USA, Ohio) > > > > -- > > Russ Whaley > > whaley.russ(a)gmail.com > > > -- Russ Whaley whaley.russ(a)gmail.com

March 31, 2020

Re: [Pharo-users] Ballooning image size! Approaching 400MB

by dario.trussardi65

Ciao, > My image size keeps growing and growing. I've been scouring Google and mailing lists, trying to find a solution. i have the same problem with a Pharo 7 image. Maybe it has nothing to do. But after close all the class browser windows the image save return to a " valid " size. Dario

March 31, 2020

Re: [Pharo-users] Ballooning image size! Approaching 400MB

by Sven Van Caekenberghe

Hi Russ, It is quite hard to debug somebody else's application, especially without access to the code, but here are some suggestions of what I would do. Can you move your code to a new/fresh image and see what happens there (especially after just one iteration of loading your data) ? Is there a difference between loading your data and opening your app with respect to the retention of garbage ? This would help to determine if this is a UI problem or a domain model problem. There are tools that help you to figure out who holds a specific object ('Reverse pointers to' in the Inspector) but these are not so easy to use (you get lots of data). Sven > On 31 Mar 2020, at 16:55, Russ Whaley <whaley.russ(a)gmail.com> wrote: > > My image size keeps growing and growing. I've been scouring Google and mailing lists, trying to find a solution. > > Observables: > â¢ Running this 'query' shows I have a whole lot instances of Objects I've created that are not "releasing". There are 65000 instances of one Object/Class, and 350,000 of another. (there are more, these are just the big hitters). > (Object allSubclasses collect: [ :aClass | > aClass -> aClass allInstances size]) > sort: [ :a :b | a value > b value ]. > â¢ Each time I load my app/UI - which creates/loads another 5000 of one object and 25,000 of the 2nd object - my Class>>instanceCount(s) keep growing and so does my image size. > â¢ I've done: > â¢ Smalltalk garbageCollect. > â¢ Smalltalk garbageCollectMost. > â¢ 10 timesRepeat: [ Smalltalk garbageCollect]. (many, many times) > Somehow, these instances I create are not 'releasing'. All of my Classes are direct subclasses of Object. Interestingly enough, all these objects sit in a single collection for the high-level model - and there are only 67 instances of that Object... here's the hierarchy: > > MyTunes - instance holds a Dictionary of Libraries, rootFolder and tags collection > Library - instance(s) hold Dictionary of Artists & Playlists, tags collection, and MyTunes reference > Artist - instances hold Dictionary of Albums, and Library reference > Album - instances hold Dictionary of Tracks, and Artist reference > Track - instances hold TagInfo, Album reference > TagInfo - instances hold fileReference and ByteString of ID3 tag info. > PlayList - instances hold Dictionary of Tracks, Library reference. > > Here's my start code in my app... (I don't know how to use SpApplication, SpPresenter and my model(s) together - this may be part of the problem).. > > start > "Override this to start your app" > "*** I don't know how to use SpApplicatoin, SpPresenter and my model MyTunes ***" > > | myTunes tmpLibrary myPres | > > "where do I store the model -> MyTunes?" > myTunes := MyTunes new. > > "this is just for testing, but the actual re-load of the library takes 15-20 minutes (60,000 files!)" > tmpLibrary := myTunes readLibraryFromSTONfile. > myTunes addLibrary: tmpLibrary. > > "where do I store the presenter -> MyTunesPresenter? " > myPres := MyTunesPresenter on: tmpLibrary. > myPres openWithSpec. > > While I'd love help with my App/Pres/Model - my first goal is to stop the rapid growth of my object. > > Questions? > > Thanks! > Russ Whaley (USA, Ohio) > > -- > Russ Whaley > whaley.russ(a)gmail.com

March 31, 2020

Ballooning image size! Approaching 400MB

by Russ Whaley

My image size keeps growing and growing. I've been scouring Google and mailing lists, trying to find a solution. Observables: - Running this 'query' shows I have a whole lot instances of Objects I've created that are not "releasing". There are 65000 instances of one Object/Class, and 350,000 of another. (there are more, these are just the big hitters). (Object allSubclasses collect: [ :aClass | aClass -> aClass allInstances size]) sort: [ :a :b | a value > b value ]. - Each time I load my app/UI - which creates/loads another 5000 of one object and 25,000 of the 2nd object - my Class>>instanceCount(s) keep growing and so does my image size. - I've done: - Smalltalk garbageCollect. - Smalltalk garbageCollectMost. - 10 timesRepeat: [ Smalltalk garbageCollect]. (many, many times) Somehow, these instances I create are not 'releasing'. All of my Classes are direct subclasses of Object. Interestingly enough, all these objects sit in a single collection for the high-level model - and there are only 67 instances of that Object... here's the hierarchy: MyTunes - instance holds a Dictionary of Libraries, rootFolder and tags collection Library - instance(s) hold Dictionary of Artists & Playlists, tags collection, and MyTunes reference Artist - instances hold Dictionary of Albums, and Library reference Album - instances hold Dictionary of Tracks, and Artist reference Track - instances hold TagInfo, Album reference TagInfo - instances hold fileReference and ByteString of ID3 tag info. PlayList - instances hold Dictionary of Tracks, Library reference. Here's my start code in my app... (I don't know how to use SpApplication, SpPresenter and my model(s) together - this may be part of the problem).. start "Override this to start your app" "*** I don't know how to use SpApplicatoin, SpPresenter and my model MyTunes ***" | myTunes tmpLibrary myPres | "where do I store the model -> MyTunes?" myTunes := MyTunes new. "this is just for testing, but the actual re-load of the library takes 15-20 minutes (60,000 files!)" tmpLibrary := myTunes readLibraryFromSTONfile. myTunes addLibrary: tmpLibrary. "where do I store the presenter -> MyTunesPresenter? " myPres := MyTunesPresenter on: tmpLibrary. myPres openWithSpec. While I'd love help with my App/Pres/Model - my first goal is to stop the rapid growth of my object. Questions? Thanks! Russ Whaley (USA, Ohio) -- Russ Whaley whaley.russ(a)gmail.com

March 31, 2020

[ANN] Complishon: efficient heuristics for code completion

by Guillermo Polito

Hi all, Since yesterday, Pharo 9 contains a new alternative code completion engine. The idea behind this engine is to be pluggable, to be efficient and to be more accurate through the introduction of heuristics. The completion engine implements a couple of nice heuristics, like - chances are `anOrderedCollection` references an ordered collection - chances are you want to auto-complete messages implemented in the same package New heuristics can be added easily (I was playing with plugging heuristics using type inference like roel typer). If you want more details, check the blogpost: https://masteringobjects.wordpress.com/2020/03/30/complishon-efficient-heur… <https://masteringobjects.wordpress.com/2020/03/30/complishon-efficient-heur…> And if you have ideas for new heuristics that could make your Pharo experience better, let us know! Cheers, Guille

March 31, 2020