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

UFFI counterpart to "C iterate over a arry through a pointer"

by ASAM

Hello, I'm looking for help with the following problem. I try to get closer from the C point of view to the problem. //These are the structures typedef struct { unsigned int NumEntries; /* number of entries written to the pModuleData array */ MODULE_DATA *pModuleData; /* pointer to array containing module infos and module handles */ } MODULE; typedef struct { unsigned int ModuleTypeId; /* ModuleTypeId */ unsigned int hMod; /* handle Module assigned */ char *pVendorModuleName; /* Vendor specific information string. */ } MODULE_DATA; //this is a function that I call via FFI unsigned int errorCheck GetModuleIds(MODULE **pModuleIdList) { //memory will be allocated here and the structure will be filled. } Now my questions :-) I solve the pointer pointer problem with ExternalAddress and MODULE fromHandle: | result pointerAutoRelease mod| pointerAutoRelease := ExternalAddress new pointerAutoRelease. result := call ffiGetModuleIds: pointerAutoRelease. "inside Methode -> ffiGetModuleIds ^self ffiCall:#(uint32 GetModuleIds( void** pModuleIdList ) )" "result is unimportant for understanding the problem" mod := MODULE fromHandle: pointerAutoRelease. Is this a good way? Or is there a better solution? And now comes my main problem... How do I get my array( or Collection) from NumEntries and *pModuleData with ffi? So I would do it roughly in C. main(){ MODULE_DATA *pModuleData; MODULE *moduleIdList=NULL; unsigned int retval = GetModuleIds(&moduleIdList); printf("Number of modules: %d\n\n",moduleIdList->NumEntries); for (unsigned int i=0;i<moduleIdList->NumEntries;i++) { // Set a pointer to the current ModuleData pModuleData = &moduleIdList->pModuleData[i]; //is like iterate through a pointer //etc. ..... ... } } Thanks you for your help. -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

May 25, 2020

Re: [Pharo-users] Pharo on Chromebook

by Jan KurÅ¡

Hi Pablo, sure. I am running on HP Chromebook X2 (full spec <https://support.hp.com/nz-en/document/c06160695>). Current Chrome OS 81. Help -> About shows this: Pharo 8.0.0, Build information: Pharo-8.0.0+build.1136.sha.a153e04ae4e325509ed78bfe25c9ce560afb24b0 (64 Bit) $ pharo-vm/pharo --version 5.0-202002121043 Wed Feb 12 11:06:45 UTC 2020 gcc 5.4.0 [Production Spur 64-bit VM] CoInterpreter * VMMaker-CompatibleUserName.1580983506 uuid: 7aff73cb-5a2e-5002-a356-37de4e762a49 Feb 12 2020 StackToRegisterMappingCogit * VMMaker-CompatibleUserName.1580983506 uuid: 7aff73cb-5a2e-5002-a356-37de4e762a49 Feb 12 2020 VM: 202002121043 https://github.com/pharo-project/opensmalltalk-vm.git Date: Wed Feb 12 11:43:20 2020 CommitHash: 52202d8 Plugins: 202002121043 https://github.com/pharo-project/opensmalltalk-vm.git Linux travis-job-93347cf3-9798-4672-8c23-706b9ceb049b 4.15.0-1028-gcp #29~16.04.1-Ubuntu SMP Tue Feb 12 16:31:10 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux plugin path: pharo-vm/lib/pharo/5.0-202002121043 [default: /home/kurs/pharo8/pharo-vm/lib/pharo/5.0-202002121043/] Is there any other information I can provide? Cheers, Jan On Wed, May 20, 2020 at 2:57 PM tesonep(a)gmail.com <tesonep(a)gmail.com> wrote: > Hi Jan, > sorry about listening of your problems. Can you give me more details of > the version that you are using? (Architecture, OS, Pharo and VM). It looks > like a problem with the rendering. I will try to reproduce it in a VM. > > Thanks for the report. > > On Tue, May 19, 2020 at 7:52 PM Jan KurÅ¡ <kurs.jan(a)gmail.com> wrote: > >> Hi, has anyone an experience with running Pharo on Chromebook (using >> Crostini)? It worked reasonably well for me in the past (3 months ago), now >> I see rendering issues: >> [image: image.png] >> >> I tried with latest and greatest Pharo8 and fresh image, I see the same >> rendering issue. >> >> Thanks, Jan >> > > > -- > Pablo Tesone. > tesonep(a)gmail.com >

May 25, 2020

Re: [Pharo-users] Reintroducing code rewriting GUI

by StÃ©phane Ducasse

I agree :) And we are working with Sebastian Jordan and Juan-Pablo Sandoval to propose a nice tool for this. S. > On 25 May 2020, at 15:42, stephan <stephan(a)stack.nl> wrote: > > A few weeks ago there was a post showing how to do code rewriting. > > | env rewriter changes | > env := RBBrowserEnvironment default forPackages: (RPackageOrganizer default > packages ). > > rewriter := RBParseTreeRewriter new. > rewriter > replace:'`@receiver detect: `@arg1 ifFound: [ :`arg2 | `arg2 ] ifNone: > `@arg3' with: '`@receiver detect: `@arg1 ifNone: `@arg3'. > > changes := Array with: (RBSmalllintChecker runRule: (RBTransformationRule > new > rewriteRule: rewriter; > yourself) > onEnvironment: env ) builder. > > (ChangesBrowser changes: changes) open. > > We haven't had a GUI for that for a long time in Pharo. And most developers don't seem to be aware that we have this powerful tool. Nor are they aware of how to use it. It seems difficult to learn, seeing that it needs classes from: > > - Refactoring-Environment > - RPackage-Core-Base > - AST-Core-Matching > - Refactoring-Critics > - NautilusRefactoring-Utilities > > It is also not easy to find out how to just do a match, instead of a rewrite. Also, the patterns recognized are not the same as those in SmaCC, which is more powerful. When googling for code rewriting, I found > > - Smacc: https://www.slideshare.net/pharoproject/smack-behind-the-refactorings > - The original rewrite tool: https://refactory.com/rewrite-tool/ > - RewriteTool: https://github.com/jordanmontt/RewriteTool-Spec2 > > - MatchTool: https://github.com/jordanmontt/MatchTool-Spec2 > > I'd prefer to have the rewrite tools integrated in the standard Pharo image, as that makes it much more likely that they are used systematically. The original rewrite tool is not for Pharo, and RewriteTool and MatchTool can a.t.m. not be used to do the actual rewrites. I think porting the GUI from the original rewrite tool to Spec2, and then applying the improvements from MatchTool and RewriteTool is more likely to be effective, as it allows starting from working code. And also to do the development directly in pharo-project/pharo, not in a separate project, as that is unlikely to be kept up-to-date > > > Stephan > > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

May 25, 2020

Re: Moving a Pharo window under Centos

by Michael Burns

Good news on this issue: I changed Parallels to Coherence Mode where every window floats free on the Mac display. This problem does not occur in Coherence. The thinking was that events like Mouse Down and Up are somewhat time sensitive. My guess is that without Coherence mode windows has more levels of event propagation. The System Browser depends on Pharo, Pharo depends on Centos, Centos depends on Parallels, and finally Parallels depends on MacOS. Iâm guessing that Coherence mode cuts out one or two levels of event propagation (maybe Centos and/or Parallels). Any better interpretation? In any case, this problem is no longer an issue for me. > On May 25, 2020, at 5:12 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > Hi michael > > pay attention because parallels is simulating so the crew here got some problems that there are low level difference > and we had to have a windows machine for real. > > S. >> >> >> From: Michael Burns <michaelburns(a)mac.com <mailto:michaelburns@mac.com>> >> Subject: Moving a Pharo window under Centos >> Date: 24 May 2020 at 22:51:54 CEST >> To: "pharo-users(a)lists.pharo.org <mailto:pharo-users@lists.pharo.org>" <pharo-users(a)lists.pharo.org <mailto:pharo-users@lists.pharo.org>> >> Cc: Michael Burns <michaelburns(a)mac.com <mailto:michaelburns@mac.com>> >> >> >> Iâm trying out Pharo on Centos. >> Since I donât have a spare PC that I can install Centos, I installed on my Mac under Parallels. >> >> Centos runs fine, and I was able to install latest Pharo 8.0. >> >> With any other windows under Centos I can grab the title bar, move it, then drop it where I like. >> However, inside Pharo, any window I grab by the title bar, though it moves to follow my cursor, Does not drop when I let up on the mouse. >> Iâm then stuck where all I can do is drag that window around but never drop it. >> For some reason when I Cmd-tab away to a Mac App, then move the cursor back to Pharo it only rarely fixes the problem. >> >> Anybody else run Pharo under Centos, under Parallels? >> >> Anybody else seen this? >> >> Is there a fix or a workaround? >> >> >> >> > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France >

May 25, 2020

Reintroducing code rewriting GUI

by stephan

A few weeks ago there was a post showing how to do code rewriting. | env rewriter changes | env := RBBrowserEnvironment default forPackages: (RPackageOrganizer default packages ). rewriter := RBParseTreeRewriter new. rewriter replace:'`@receiver detect: `@arg1 ifFound: [ :`arg2 | `arg2 ] ifNone: `@arg3' with: '`@receiver detect: `@arg1 ifNone: `@arg3'. changes := Array with: (RBSmalllintChecker runRule: (RBTransformationRule new rewriteRule: rewriter; yourself) onEnvironment: env ) builder. (ChangesBrowser changes: changes) open. We haven't had a GUI for that for a long time in Pharo. And most developers don't seem to be aware that we have this powerful tool. Nor are they aware of how to use it. It seems difficult to learn, seeing that it needs classes from: - Refactoring-Environment - RPackage-Core-Base - AST-Core-Matching - Refactoring-Critics - NautilusRefactoring-Utilities It is also not easy to find out how to just do a match, instead of a rewrite. Also, the patterns recognized are not the same as those in SmaCC, which is more powerful. When googling for code rewriting, I found - Smacc: https://www.slideshare.net/pharoproject/smack-behind-the-refactorings - The original rewrite tool: https://refactory.com/rewrite-tool/ - RewriteTool: https://github.com/jordanmontt/RewriteTool-Spec2 - MatchTool: https://github.com/jordanmontt/MatchTool-Spec2 I'd prefer to have the rewrite tools integrated in the standard Pharo image, as that makes it much more likely that they are used systematically. The original rewrite tool is not for Pharo, and RewriteTool and MatchTool can a.t.m. not be used to do the actual rewrites. I think porting the GUI from the original rewrite tool to Spec2, and then applying the improvements from MatchTool and RewriteTool is more likely to be effective, as it allows starting from working code. And also to do the development directly in pharo-project/pharo, not in a separate project, as that is unlikely to be kept up-to-date Stephan

May 25, 2020

[ANN] Next Pharo Sprint: May 29

by Marcus Denker

We will organize a Pharo sprint / Moose dojoMay 29 (this Friday) Goals of this sprint: - Fix issues from tracker https://github.com/pharo-project/pharo/issues This is a Remote Sprint, it happens on Discord. http://pharo.org/contribute-events We have added a Board to coordinate the work: https://github.com/orgs/pharo-project/projects/9 A list of all Pharo Event of the year an be found here: https://association.pharo.org/events

May 25, 2020

Re: [Pharo-users] Moving a Pharo window under Centos

by StÃ©phane Ducasse

Hi michael pay attention because parallels is simulating so the crew here got some problems that there are low level difference and we had to have a windows machine for real. S. > > > From: Michael Burns <michaelburns(a)mac.com> > Subject: Moving a Pharo window under Centos > Date: 24 May 2020 at 22:51:54 CEST > To: "pharo-users(a)lists.pharo.org" <pharo-users(a)lists.pharo.org> > Cc: Michael Burns <michaelburns(a)mac.com> > > > Iâm trying out Pharo on Centos. > Since I donât have a spare PC that I can install Centos, I installed on my Mac under Parallels. > > Centos runs fine, and I was able to install latest Pharo 8.0. > > With any other windows under Centos I can grab the title bar, move it, then drop it where I like. > However, inside Pharo, any window I grab by the title bar, though it moves to follow my cursor, Does not drop when I let up on the mouse. > Iâm then stuck where all I can do is drag that window around but never drop it. > For some reason when I Cmd-tab away to a Mac App, then move the cursor back to Pharo it only rarely fixes the problem. > > Anybody else run Pharo under Centos, under Parallels? > > Anybody else seen this? > > Is there a fix or a workaround? > > > > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

May 25, 2020

Re: [Pharo-users] A little help with EnterprisePharo book

by StÃ©phane Ducasse

I did not have the timeâ¦. working on spec book all week-end until late. > On 25 May 2020, at 11:18, Jonathan van Alteren <jvalteren(a)objectguild.com> wrote: > > Hi StÃ©phane, > > Thank you for your suggestions. I will try some things and let you know how they go. > > > Cheers, > > > <https://objectguild.com/> > Jonathan van Alteren > Founding Member | Object Guild B.V. > Sustainable Software for Purpose-Driven Organizations > > jvalteren(a)objectguild.com <mailto:jvalteren@objectguild.com> > On 22 May 2020, 08:49 +0200, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr>, wrote: >> Hello >> >> Hi jonathan >> >> I have to check because this is the first book we wrote with Pillar. >> Normally with more recent books I add a build to produce automatically the pdf (but I have to check because latex is sometimes super boring >> -like not offering the same packages). >> >>> Hi all, >>> >>> I'd like to be able to build the EnterprisePharo book, so I might contribute to it with some improvements. However, the README seems to be out of date. >> >> What you can do is to issue PRs if they break we will >>> >>> The 'download.sh' file mentioned under 'Download Pillar' is not there. There's a 'subdownload.sh' file, but that doesn't do or output anything, and looking into it, the URL returns a 404 (https://raw.githubusercontent.com/pillar-markup/pillar/master/download.sh <https://raw.githubusercontent.com/pillar-markup/pillar/master/download.sh>). >>> >>> So I manually cloned the pillar git project from https://github.com/pillar-markup/pillar <https://github.com/pillar-markup/pillar>. I checked out tag v7.7.4, since that was mentioned for Pharo booklets. Building that works, resulting in a pillar 'executable'. >>> >>> However, after installing MacText, executing 'pillar build pdf' fails with the message: FileDoesNotExistException: '/Users/jvalteren/git/EnterprisePharo/_support'. Looking at the structure created by the command 'pillar archetype book', it seems that '_support' is the new name for the 'support' folder that does. >> >> Yes. between pillar 6 and 7 we revisited fully the pipeline and the configuration managed and many more. >> >>> So, I created a symlink from '_support' to 'support' and tried building again, but that fails with the message: KeyNotFound: latexWriter. This seems to be related to the contents of the 'pillar.conf' file. >> >> What we can try is to copy the _support file of a more recent version + edit the config and index/main.pillar files. >> I will be try to find some time this evening. >>> >>> Instead of trying to guess what's going on and try different things to fix this and get it built, I thought to reach out here :-) >>> >>> Can anyone tell me what to do so I can start making changes to the book? >> >> First send a PR so that it is not lost. >> >>> >>> I'm on macOS Catalina by the way, so 64-bit only. >>> >>> >>> Thanks! >>> >>> >>> <https://objectguild.com/> >>> Jonathan van Alteren >>> Founding Member | Object Guild B.V. >>> Sustainable Software for Purpose-Driven Organizations >>> >>> jvalteren(a)objectguild.com <mailto:jvalteren@objectguild.com> >> >> -------------------------------------------- >> StÃ©phane Ducasse >> http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> >> 03 59 35 87 52 >> Assistant: Aurore Dalle >> FAX 03 59 57 78 50 >> TEL 03 59 35 86 16 >> S. Ducasse - Inria >> 40, avenue Halley, >> Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza >> Villeneuve d'Ascq 59650 >> France >> -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

May 25, 2020

Re: [Pharo-users] Pushing to GitHub repository from my iceberg repository is hung (beachball). How do I interrupt the process?

by StÃ©phane Ducasse

Hi michael I discussed with guille and pablo and they told me that this happens to them from time to time and this is related to libgit. Guille said that they do not succeed to reproduce it. They hope that moving to libgit1.0 will fix that problem. We are worried about this and we would love to have a reproducible case. S

May 25, 2020

Re: [Pharo-users] A little help with EnterprisePharo book

by Jonathan van Alteren

Hi StÃ©phane, Thank you for your suggestions. I will try some things and let you know how they go. Cheers, Jonathan van Alteren Founding Member | Object Guild B.V. Sustainable Software for Purpose-Driven Organizations jvalteren(a)objectguild.com On 22 May 2020, 08:49 +0200, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr>, wrote: > Hello > > Hi jonathan > > I have to check because this is the first book we wrote with Pillar. > Normally with more recent books I add a build to produce automatically the pdf (but I have to check because latex is sometimes super boring > -like not offering the same packages). > > > Hi all, > > > > I'd like to be able to build the EnterprisePharo book, so I might contribute to it with some improvements. However, the README seems to be out of date. > > What you can do is to issue PRs if they break we will > > > > The 'download.sh' file mentioned under 'Download Pillar' is not there. There's a 'subdownload.sh' file, but that doesn't do or output anything, and looking into it, the URL returns a 404 (https://raw.githubusercontent.com/pillar-markup/pillar/master/download.sh) > > > > So I manually cloned the pillar git project fromÂ https://github.com/pillar-markup/pillar. I checked out tag v7.7.4, since that was mentioned for Pharo booklets. Building that works, resulting in a pillar 'executable'. > > > > However, after installing MacText, executing 'pillar build pdf' fails with the message: FileDoesNotExistException: '/Users/jvalteren/git/EnterprisePharo/_support'. Looking at the structure created by the command 'pillar archetype book', it seems that '_support' is the new name for the 'support' folder that does. > > Yes. between pillar 6 and 7 we revisited fully the pipeline and the configuration managed and many more. > > > So, I created a symlink from '_support' to 'support' and tried building again, but that fails with the message: KeyNotFound: latexWriter. This seems to be related to the contents of the 'pillar.conf' file. > > What we can try is to copy the _support file of a more recent version + edit the config and index/main.pillar files. > I will be try to find some time this evening. > > > > Instead of trying to guess what's going on and try different things to fix this and get it built, I thought to reach out here :-) > > > > Can anyone tell me what to do so I can start making changes to the book? > > First send a PR so that it is not lost. > > > > > I'm on macOS Catalina by the way, so 64-bit only. > > > > > > Thanks! > > > > > > Jonathan van Alteren > > Founding Member | Object Guild B.V. > > Sustainable Software for Purpose-Driven Organizations > > > > jvalteren(a)objectguild.com > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr / http://www.pharo.org > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France >

May 25, 2020