April 2022 - Pharo-dev - lists.pharo.org

Sockets not working under heavy VM load?
by Pavel Krivanek Oct. 3, 2023

Oct. 3, 2023

Hi, we have some performance issues with Glorp over P3 and, after some investigation, I have a theory that could explain it. And I would like to know your opinion if it is correct. To reproduce this issue, you can try something easy. Just create a process with normal or higher priority that will try to read something from a socket. And, in parallel, do in a separate thread an operation that takes all the processor time for several seconds. ```` [ 5 seconds wait. Time now traceCr. ZnClient new url: 'https://www.google.com'; get. Time now traceCr. ] forkAt: 60. [1000 timesRepeat: [ 10000 factorial ] ] timeToRun ```` (you may try a different safe server address) The processes run in parallel until the time when the first process tries to obtain data from the socket. Then it hangs and waits until finishing of the second process. My theory is that the VM socket plugin is able to receive incoming data from the connection and save it into the buffer. In the meantime, the reading process is waiting on the socket semaphore. But it looks like the plugin is not able to release the semaphore while the VM is actually doing something. It needs to wait until the VM has nothing useful to do, and then it is finally able to release the semaphores so Pharo processes are resumed and can start to read. Is my theory right? Cheers, -- Pavel

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Recommendation for password encryption?
by Mariano Martinez Peck Sept. 30, 2022

Sept. 30, 2022

Hi guys. Some time ago I asked about the best way to encrypt a password. Some of the recommendations I got was: 1) Generally for passwords you do not write a decrypt method for security purposes (eg you do not want people to be able to reverse engineer the encrypted password easily) 2) put a little salt 3) There is http://www.squeaksource.com/Cryptography/PasswordHashingFFI 4) I should not decrypt password but instead I should compare both encrypted versions to see if they are equal. My scenario is the following. I need to store database passwords in text files. So I don't want to let them as plain text. And while I understand 4), I think it's a different scenario than mine. I know that some database driver may allow you to directly send the encrypted password. But still...I have another similar scenario in which I have to store a password and then send it (unencrypted)...so I kind of really need a bi-directional encryption. Now..I would try to avoid having an external library + FFI. Any ideas what is the best thing I can do? And how could I solve 1) if I want bidirectional like in my case? Thanks in advance, -- Mariano http://marianopeck.wordpress.com

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[ANN] Pharo Launcher 3.0.1 released!
by Christophe Demarey May 10, 2022

May 10, 2022

Hi all, Pharo Launcher 3.0.1 has just been released! It is available from http://pharo.org/download <http://pharo.org/download>. It fixes some issues reported on Pharo Launcher 3.0. Here is the changelog: Pharo Launcher v3.0.1 Bug fixes: #554 <https://github.com/pharo-project/pharo-launcher/issues/554> UI does not show up on Windows #551 <https://github.com/pharo-project/pharo-launcher/issues/551> Show folder button is broken in Windows 10 #550 <https://github.com/pharo-project/pharo-launcher/issues/550> About Box shows "untitled Window" #549 <https://github.com/pharo-project/pharo-launcher/issues/549> Better display of download error messages. #358 <https://github.com/pharo-project/pharo-launcher/issues/358> Restore proxy authentication settings. Regards, The Pharo team.

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Re: Pharo Launcher 3.0 does not open
by Shaping April 29, 2022

April 29, 2022

Hi Christophe. I tried installing the version below (after uninstalling the old PL 3.0), but I get the same problem. Double clicking the PL icon will create VM instances but no GUI. The Windows Event Viewer says the install completed successfully. Shaping From: Christophe Demarey <christophe.demarey(a)inria.fr> Sent: Thursday, 28 April, 2022 08:02 To: Pharo Development List <pharo-dev(a)lists.pharo.org> Subject: [Pharo-dev] Re: Pharo Launcher 3.0 does not open ( was: RE: Re: [ANN] Pharo Launcher 3.0 released!) Hi, Indeed, there is a missing lib in the Windows installer. See https://github.com/pharo-project/pharo-launcher/issues/554 Iâm preparing a bug fix release for it. Thank you for reporting. If you cannot wait, you can use this version: https://ci.inria.fr/pharo-ci-jenkins2/job/PharoLauncher-Pipeline/job/dev/18… Christophe Le 28 avr. 2022 Ã 00:14, Shaping <shaping(a)uurda.org <mailto:shaping@uurda.org> > a Ã©crit : Iâm running an updated Windows 10 Pro, and let the Pharo Launcher installer use all the defaults. The uninstalls were thorough and done with CCleaner and Revo Uninstaller. Is everyone able to get Pharo Launcher 3.0 to work? Iâve never had this problem. Shaping ------- My newly installed Pharo Launcher 3.0 doesnât open. Starting the Launcher creates a VM, but no GUI. Every time I start it, TaskMan shows another VM instance, but no GUI appears. I ran the installer twice after a complete uninstall. Anyone having this problem? Shaping From: Guillermo Polito <guillermopolito(a)gmail.com <mailto:guillermopolito@gmail.com> > Sent: Tuesday, 19 April, 2022 04:11 To: Pharo Development List <pharo-dev(a)lists.pharo.org <mailto:pharo-dev@lists.pharo.org> > Cc: Pharo-users <pharo-users(a)lists.pharo.org <mailto:pharo-users@lists.pharo.org> > Subject: [Pharo-dev] Re: [ANN] Pharo Launcher 3.0 released! Thanks Christophe, this is super work :) El 14 abr 2022, a las 14:26, Christophe Demarey <christophe.demarey(a)inria.fr <mailto:christophe.demarey@inria.fr> > escribiÃ³: Hi all, Pharo Launcher 3.0 has just been released! It is available from http://pharo.org/download. It is based on latest Spec2 and Pharo 10 image. It now comes with a native Apple Silicon version and Mac OS packages are notarized. Big thanks to all contributors, including issue reports. Here is the changelog: Pharo Launcher v3.0 New features: * Full rewrite of the UI using Spec 2 and Pharo 10 * Pharo Launcher can now run natively on Apple Silicon #544 <https://github.com/pharo-project/pharo-launcher/issues/544> * Pharo Launcher is now signed with a Mac Os developper account and notarized #529 <https://github.com/pharo-project/pharo-launcher/issues/529> * Windows "portable" package (only an archive without installer) #534 <https://github.com/pharo-project/pharo-launcher/issues/534> Improvements: * While importing image .sources and .version are not moved #543 <https://github.com/pharo-project/pharo-launcher/issues/543> * recreate the image does not re apply the script if one is provided #536 <https://github.com/pharo-project/pharo-launcher/issues/536> (thanks to @hogoww <https://github.com/hogoww> ) * Save keybind for scripts #545 <https://github.com/pharo-project/pharo-launcher/pull/545> (thanks to @hogoww <https://github.com/hogoww> and @Inao0 <https://github.com/Inao0> ) Bug fixes: * GitHub releases artefacts download were not always working #535 <https://github.com/pharo-project/pharo-launcher/issues/535> * "Basic launch" does not do its job in Pharo 10 #540 <https://github.com/pharo-project/pharo-launcher/issues/540> * Proxy settings not applied through settings screen #541 <https://github.com/pharo-project/pharo-launcher/issues/541> Regards, The Pharo team.

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[ANN] Pharo Launcher 3.0 released!
by Christophe Demarey April 29, 2022

April 29, 2022

Hi all, Pharo Launcher 3.0 has just been released! It is available from http://pharo.org/download. It is based on latest Spec2 and Pharo 10 image. It now comes with a native Apple Silicon version and Mac OS packages are notarized. Big thanks to all contributors, including issue reports. Here is the changelog: Pharo Launcher v3.0 New features: Full rewrite of the UI using Spec 2 and Pharo 10 Pharo Launcher can now run natively on Apple Silicon #544 <https://github.com/pharo-project/pharo-launcher/issues/544> Pharo Launcher is now signed with a Mac Os developper account and notarized #529 <https://github.com/pharo-project/pharo-launcher/issues/529> Windows "portable" package (only an archive without installer) #534 <https://github.com/pharo-project/pharo-launcher/issues/534> Improvements: While importing image .sources and .version are not moved #543 <https://github.com/pharo-project/pharo-launcher/issues/543> recreate the image does not re apply the script if one is provided #536 <https://github.com/pharo-project/pharo-launcher/issues/536> (thanks to @hogoww <https://github.com/hogoww>) Save keybind for scripts #545 <https://github.com/pharo-project/pharo-launcher/pull/545> (thanks to @hogoww <https://github.com/hogoww> and @Inao0 <https://github.com/Inao0>) Bug fixes: GitHub releases artefacts download were not always working #535 <https://github.com/pharo-project/pharo-launcher/issues/535> "Basic launch" does not do its job in Pharo 10 #540 <https://github.com/pharo-project/pharo-launcher/issues/540> Proxy settings not applied through settings screen #541 <https://github.com/pharo-project/pharo-launcher/issues/541> Regards, The Pharo team.

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This week (16 and 17/2022) on the Pharo Issue Tracker
by Marcus Denker April 29, 2022

April 29, 2022

This week (16 and 17/2022) on the Pharo Issue Tracker Pharo 11 is now building and the development phase started. We merged 8 Pull requests and closed 11 issues. You can help! One example is reviewing submitted PRs https://github.com/pharo-project/pharo/pulls Image Size / Memory ========== Some more work on reducing the size of code in memory 10963-Memory-AllProtocol-uses-a-lot-of-memory #11148 https://github.com/pharo-project/pharo/pull/11148 10957-Memory-sharedPools-OrderedCollections-waste-memory #11171 https://github.com/pharo-project/pharo/pull/11171 Bugs ==== Fixing RBChildrenToSiblingsRefactoring to handle Classes that use Traits #11168 https://github.com/pharo-project/pharo/pull/11168 11063-ExternalChangesBrowserbuildMenu-should-use-selectedItemsSorted #11156 https://github.com/pharo-project/pharo/pull/11156 11159-Complete-the-set-of-methods-to-access-keys #11160 https://github.com/pharo-project/pharo/pull/11160 Cleanup ======= testProperAccessingProtocolIsUsed can now check for 0 #11128 https://github.com/pharo-project/pharo/pull/11128 Documentation / Comments ======================== 6719-Dictionary-creation-API-should-accept-associations-too #11166 https://github.com/pharo-project/pharo/pull/11166 fix comments mentioning compact classes. #11132 https://github.com/pharo-project/pharo/pull/11132 Pharo 10 ======== Fix #isPrime when sent to 3. #11147 https://github.com/pharo-project/pharo/pull/11147

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Pharo Launcher 3.0 does not open ( was: RE: Re: [ANN] Pharo Launcher 3.0 released!)
by Shaping April 28, 2022

April 28, 2022

My newly installed Pharo Launcher 3.0 doesnât open. Starting the Launcher creates a VM, but no GUI. Every time I start it, TaskMan shows another VM instance, but no GUI appears. I ran the installer twice after a complete uninstall. Anyone having this problem? Shaping From: Guillermo Polito <guillermopolito(a)gmail.com> Sent: Tuesday, 19 April, 2022 04:11 To: Pharo Development List <pharo-dev(a)lists.pharo.org> Cc: Pharo-users <pharo-users(a)lists.pharo.org> Subject: [Pharo-dev] Re: [ANN] Pharo Launcher 3.0 released! Thanks Christophe, this is super work :) El 14 abr 2022, a las 14:26, Christophe Demarey <christophe.demarey(a)inria.fr <mailto:christophe.demarey@inria.fr> > escribiÃ³: Hi all, Pharo Launcher 3.0 has just been released! It is available from http://pharo.org/download. It is based on latest Spec2 and Pharo 10 image. It now comes with a native Apple Silicon version and Mac OS packages are notarized. Big thanks to all contributors, including issue reports. Here is the changelog: Pharo Launcher v3.0 New features: * Full rewrite of the UI using Spec 2 and Pharo 10 * Pharo Launcher can now run natively on Apple Silicon #544 <https://github.com/pharo-project/pharo-launcher/issues/544> * Pharo Launcher is now signed with a Mac Os developper account and notarized #529 <https://github.com/pharo-project/pharo-launcher/issues/529> * Windows "portable" package (only an archive without installer) #534 <https://github.com/pharo-project/pharo-launcher/issues/534> Improvements: * While importing image .sources and .version are not moved #543 <https://github.com/pharo-project/pharo-launcher/issues/543> * recreate the image does not re apply the script if one is provided #536 <https://github.com/pharo-project/pharo-launcher/issues/536> (thanks to @hogoww <https://github.com/hogoww> ) * Save keybind for scripts #545 <https://github.com/pharo-project/pharo-launcher/pull/545> (thanks to @hogoww <https://github.com/hogoww> and @Inao0 <https://github.com/Inao0> ) Bug fixes: * GitHub releases artefacts download were not always working #535 <https://github.com/pharo-project/pharo-launcher/issues/535> * "Basic launch" does not do its job in Pharo 10 #540 <https://github.com/pharo-project/pharo-launcher/issues/540> * Proxy settings not applied through settings screen #541 <https://github.com/pharo-project/pharo-launcher/issues/541> Regards, The Pharo team.

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ESUG 2022 call for presentations & Call for student volunteers
by stephane ducasse April 23, 2022

April 23, 2022

ESUG 2022 Novisad Serbia 22. â 26.8. https://esug.github.io/2022-Conference/call2022.html You can support the ESUG conference in many different ways: Sponsor the conference. New sponsoring packages are described at http://www.esug.org/supportesug/becomeasponsor/ <http://www.esug.org/supportesug/becomeasponsor/> Submit a talk, a software or a paper to one of the events. See below. Attend the conference. We'd like to beat the previous record of attendance (170 people at Amsterdam 2008)! Students can get free registration and hosting if they enroll into the the Student Volunteers program. See below. <>Developers Forum: International Smalltalk Developers Conference We are looking for YOUR experience on using Smalltalk. You will have 30 min for presentations and 45 min for hands-on tutorials. The list of topics for the normal talks and tutorials includes, but is not limited to the following: XP practices, Development tools, Experience reports Model driven development, Web development, Team management Meta-Modeling, Security, New libraries & frameworks Educational material, Embedded systems and robotics SOA and Web services, Interaction with other programming languages <>Teaching Pearls and Show us Your Business New this year!!! We added two types of sessions in addition to the regular talks and show us your projects sessions. Show your business 10 min session (Get prepared!!) Teaching pearls : we want some session on how to teach some design aspects. We want your tip and tricks to teach Smalltalk or OOP. We expect to have several 10 to 15 min sessions aggregated. <>How to submit? Make a Pull Request here https://github.com/ESUG/esug.github.io/tree/source/2022-Conference/talks Or but only if you are not connected to the worldâ¦ send an email to stephane.ducasse(a)inria.fr Title: [ESUG 2022] Please follow the template below the email will be automatically processed! Name: Email: Abstract: Bio: Call for Student Volunteers Student volunteers help keep the conference running smoothly; in return, they have free accommodations, while still having most of the time to enjoy the conference. Pay attention: the places are limited so do not wait till the last minute to apply. Conference details: Send an email to stephane.ducasse at inria.fr and serge.stinckwich at gmail.com with: title: [ESUG 2022 Student] name, gender, university/school, country, email address short description of you and why you are interested in participating For which period is accommodation covered? Accommodation is covered from Sunday 21 August until Friday 26 August 2022 (including nights from Sunday to Monday and from Thursday to Friday). Students will be hosted in student rooms. ESUG additionally covers for the lunches during the week and one dinner. Duties include handling registration as people arrive at the conference, filling coffee machines, collecting presentation slides for ESUG right after the presentation is given, being present at an information desk to answer questions, and generally being helpful. Student volunteering makes the conference better, takes a fairly small amount of time and doesn't significantly interfere with enjoying and learning from the conference. Please Note, this role requires discipline and constant attention to all attendees. Information about hotel Student Volunteer rooms are booked at (to be announced). If you are student volunteer, do not book yourself, we have arranged the booking already!

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This week (15/2022) on the Pharo Issue Tracker
by Marcus Denker April 15, 2022

April 15, 2022

After the release of Pharo10 and the Pharo Launcher 3.0, we are working on setting up everything for the development phase of Pharo11. - Git: Branch and Milestone is defined, - CI runs tests for Pull Requests submitted for Pharo11 using the latest Pharo11 - Build is available (both via get.pharo.org and it is listed in the Launcher) - We still have failing tests on the CI (to be analyzed). We closed 9 issue tracker entries and merged 5 Pull Requests: Pharo11 ======= - add accessor to AbstractInitializedSlot #11120 https://github.com/pharo-project/pharo/pull/11120 - Fix #11109: Feature Envy on startSteppingSubmorphsOf: #11110 https://github.com/pharo-project/pharo/pull/11110 - 11099-Pharo11-build-broken-Error-Could-not-determine-image-version-Using-fallback #11118 https://github.com/pharo-project/pharo/pull/11118 Pharo10 ======= - Allow to serialize Memory File Systems #11116 https://github.com/pharo-project/pharo/pull/11116 Pharo9 ====== - 10780-Spotter-crashes-in-Pharo-9 #11104 https://github.com/pharo-project/pharo/pull/11104

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This week (14/2022) on the Pharo Issue Tracker
by Marcus Denker April 8, 2022

April 8, 2022

We released Pharo10! Not a lot of Issue/PR activity due to that: Last fixes for Pharo10: ===================== - use Spec v1.1.2 #11088 https://github.com/pharo-project/pharo/pull/11088 - Fixes checkForNewScreenSize #11095 https://github.com/pharo-project/pharo/pull/11095 - Specify the mouse over color in the theme rather than hardcode it. #11094 https://github.com/pharo-project/pharo/pull/11094 Pharo11 ======= We are in the process of starting Pharo11 development, there is already a branch but image build needs to be fixed (this no download yet) - Merging latest changes in P10 to P11 #11097 https://github.com/pharo-project/pharo/pull/11097 - Fix for issue 11070: Interval>>= and Interval>>hash do not match #11086 https://github.com/pharo-project/pharo/pull/11086

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