July 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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[Compiler] Variables in DoIts
by Marcus Denker July 25, 2022

July 25, 2022

Hi, We finally merged a PR form Denis (Sorry for taking too longâ¦) that enables the use of DoitVariable in DoItIn: methods: Denis: #pharo has finally transparent variables in the debugger doIts. No ThisContext readVariable trick And we could even get rid of #DoItIn:, after merging another small cleanup, both methods now is just #DoIt as a selector. How does it work? Denis: It is the power of first class variables. There is DoItVariable fully integrated now which represents variables from different context Marcus: DoitVariable has the original Variable instance and the context (what used to the ThisContext parameter of DoItIn:). It can be read reflectively by sending #read, compiler delegates code generation to the Variables (#emitValue:)

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This week (29/2022) on the Pharo Issue Tracker
by Marcus Denker July 21, 2022

July 21, 2022

Works is slowing down with summer holidays starting in some parts of the world. But we managed to merge 8 PRs this week: Compiler ======== Main change of the weeks is that we now can compile DoIts without a method header and without the need of code reformatting (without having to add a return). - DoIts without method header and reformatting #11463 https://github.com/pharo-project/pharo/pull/11463 - Fix code highlighting for no-header doIts #1296 https://github.com/pharo-spec/Spec/pull/1296 - Fix code highlighting for no-header doIts #400 https://github.com/pharo-spec/NewTools/pull/400 Features ======== - Adding possibility to add bindings in debugger context interaction model #378 https://github.com/pharo-spec/NewTools/pull/378 Bug Fixes ========= - fixes: problem size of columns when updating inspector (Newtools #395) #1294 https://github.com/pharo-spec/Spec/pull/1294 Cleanup ======== - Integer: add missing #subclassResponsibility #11471 https://github.com/pharo-project/pharo/pull/11471 - tag AbstractBinaryFileStream as abstract #11472 https://github.com/pharo-project/pharo/pull/11472 - Deprecate-theMetaClass-theNonMetaClass #11467 https://github.com/pharo-project/pharo/pull/11467

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Re: [Pharo-users] Looking for North American programming language/Smalltalk researchers (academic or industry)
by Sean DeNigris July 18, 2022

July 18, 2022

Great idea! Definitely interested... > Given the success of Camp Smalltalk Supreme, Richard and I were wondering if there is interest in a 3rd research Smalltalk conference (alongside ESUG/IWST and FAST/Smalltalks) oriented to North American Smalltalkers.. > > It would probably take place in May/June, and probably in/around Toronto. > > So Iâm looking for people interested in being on a program committee.

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Re: [Pharo-users] Looking for North American programming language/Smalltalk researchers (academic or industry)
by Yanni Chiu July 17, 2022

July 17, 2022

Iâd be interested to be on the committee. Any date is okay, since Iâm local to Toronto. It would be good to have a real âCamp Smalltalkâ where we could have a time and place to code together. There hasnât been a big Smalltalk event in Toronto since the 1990âs, IIRC. Itâd be great if Richard has actually sparked a âSmalltalk Renaissanceâ (a least in Toronto). Cheers, Yanni Chiu On Thu, Jul 14, 2022 at 11:35 AM David Mason <dmason(a)ryerson.ca> wrote: > Given the success of Camp Smalltalk Supreme, Richard and I were wondering > if there is interest in a 3rd research Smalltalk conference (alongside > ESUG/IWST and FAST/Smalltalks) oriented to North American Smalltalkers.. > > It would probably take place in May/June, and probably in/around Toronto. > > So Iâm looking for people interested in being on a program committee. > > Thanks > > ../Dave >

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This week (28/2022) on the Pharo Issue Tracker
by Marcus Denker July 15, 2022

July 15, 2022

Fixes ===== - Fix-Menu-Inspector-Meta #387 https://github.com/pharo-spec/NewTools/pull/387 - Updating Sindarin to Pharo-11 branch #393 https://github.com/pharo-spec/NewTools/pull/393 - Inspector columns cannot be resized #9828 https://github.com/pharo-spec/Spec/pull/1293 Virtual Machine ================ - Cleanup-M1-Variadic-FFI-Tests #11421 https://github.com/pharo-project/pharo/pull/11421 - Pharo Image support for Pharo VM's arithmetic SIMD bytecodes #11446 https://github.com/pharo-project/pharo/pull/11446 Cleanup ====== - code critique cleanup of some methods related to #category #11452 https://github.com/pharo-project/pharo/pull/11452 - Remove extra statement separator (dot) #11456 https://github.com/pharo-project/pharo/pull/11456 - remove-filteredResult #11460 https://github.com/pharo-project/pharo/pull/11460 - Replace deprecated calls to #'theMetaClass' with #'classSide' #11464 https://github.com/pharo-project/pharo/pull/11464 - Replace calls to #'theNonMetaClass' with #'instanceSide' #11465 https://github.com/pharo-project/pharo/pull/11465 - Optimized-timesRepeat #394 https://github.com/pharo-spec/NewTools/pull/394

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Re: [Pharo-users] Looking for North American programming language/Smalltalk researchers (academic or industry)
by James Foster July 15, 2022

July 15, 2022

Yes, Iâm interested but would prefer the second half of June (our school is on the quarter system) and would prefer weekdays rather than weekends. James Foster > On Jul 14, 2022, at 8:35 AM, David Mason <dmason(a)ryerson.ca> wrote: > > Given the success of Camp Smalltalk Supreme, Richard and I were wondering if there is interest in a 3rd research Smalltalk conference (alongside ESUG/IWST and FAST/Smalltalks) oriented to North American Smalltalkers.. > > It would probably take place in May/June, and probably in/around Toronto. > > So Iâm looking for people interested in being on a program committee. > > Thanks > > ../Dave

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This week (27/2022) on the Pharo Issue Tracker MD
by Marcus Denker July 8, 2022

July 8, 2022

We merged 12 PRs this week: Features ======= - Allow creating Pharo methods using the Bytecode IR #11437 https://github.com/pharo-project/pharo/pull/11437 - Show keyboard shortcuts on Debugger commands' tooltips https://github.com/pharo-spec/NewTools/pulse - Allow to add an image directly from layout #1285 https://github.com/pharo-spec/Spec/pull/1285 - Add drop list column support in tables #1290 https://github.com/pharo-spec/Spec/pull/1290 Bugs ==== - fix ShiftClassInstaller that fails to migrate some objects #11442 https://github.com/pharo-project/pharo/pull/11442 - Revert "Replacing method command refactorings with transformations from Ref2" #11438 https://github.com/pharo-project/pharo/pull/11438 Memory ====== do not store the commentSourcePointer in the class Organizer. Work in progress, see https://github.com/pharo-project/pharo/issues/10958 Add commentSourcePointer to ClassDescription #11326 https://github.com/pharo-project/pharo/pull/11326 fix-tests-commentSourcePointer #11441 https://github.com/pharo-project/pharo/pull/11441 Cleanup ====== - remove the Deprecated10 package #11426 https://github.com/pharo-project/pharo/https://github.com/pharo-project/pha… - reduce-asSymbol-in-tools #11436 https://github.com/pharo-project/pharo/pull/11436 - Cleanup: Deprecate FFIExternalReference>>#handle: and FFIExternalReference>>#handle #11431 https://github.com/pharo-project/pharo/pull/11431 - Cleanup-asRingMinimalDefinitionIn-Parent #11440 https://github.com/pharo-project/pharo/pull/11440

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Fwd: [Esug-list] [ESUG 2022] Innovation Technology Awards
by stephane ducasse July 3, 2022

July 3, 2022

> Begin forwarded message: > > From: Noury Bouraqadi <bouraqadi(a)gmail.com> > Subject: [Esug-list] [ESUG 2022] Innovation Technology Awards > Date: 20 June 2022 at 11:55:43 CEST > To: Members ESUG <esug-list(a)lists.esug.org> > > Dear fellow Smalltalkers, > > ESUG conference is a great event with multiple opportunities to discover and exchange. > One of them is the Innovation Technology Awards. > > This is a great opportunity to demo and discuss smart and cool Smalltalk software you've been developing the last 2 years. > All Smalltalk flavors are welcome! > > Submit your project now > https://esug.github.io/2022-Conference/awardsCall2022.html <https://esug.github.io/2022-Conference/awardsCall2022.html> > On Behalf of the ESUG Board, > Noury > _______________________________________________ > Esug-list mailing list -- esug-list(a)lists.esug.org > To unsubscribe send an email to esug-list-leave(a)lists.esug.org

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