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[ANN] Pharo Consortium New Academic Member: Ivan Franko National University of Lviv
by Marcus Denker Nov. 4, 2021

Nov. 4, 2021

The Pharo Consortium is very happy to announce that Ivan Franko National University of Lviv has joined the Consortium as an Academic Member, the platform of cooperation will be the Faculty of Applied Mathematics and Informatics. About - Faculty of Applied Mathematics and Informatics: https://ami.lnu.edu.ua/en/ - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: http://association.pharo.org/

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a little help for my daughter :)
by Jannik Laval Nov. 1, 2021

Nov. 1, 2021

Dear pharoers, My daughter's school (2nd year of kindergarten, she is 4 years old) is organizing a project "Around the world". The goal is to discover the countries of the world by different means, one of which leads me to ask for your help :). The goal is to send a postcard from your country with the following text: "Bonjour l'Ã©cole des Petits Pas" (in English, "Hello School of Little Steps"), and in the language of your country. The card should be sent to : Ecole maternelle des Petits Pas, classe verte 42 rue GrassoliÃ¨re 38 790 Saint Georges d'EspÃ©ranche, France Thank you for your help, and I hope to see you at the next ESUG. See you soon, -- ~~Jannik Laval~~ Associate professor (HDR) - Information systems agility IUT LumiÃ¨re, UniversitÃ© LumiÃ¨re Lyon 2 DISP Lab - https://disp-lab.fr/ +33 4 78 77 43 06 http://www.jannik-laval.eu

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This week (43/2021) on the Pharo Issue Tracker
by Marcus Denker Oct. 29, 2021

Oct. 29, 2021

We merged 8 PRs and closed 9 issues. There are 11 more PRs ready, just missing a review: https://github.com/pharo-project/pharo/pulls Features ======= - [Pharo 10] Reactivating debugger opening strategies by default. #10271 https://github.com/pharo-project/pharo/pull/10271 Fixes ===== - 10204-RBMoveMethodRefactoring-incorrectly-computes-types-when-using-a-class-name-for-the-variable-to-move-into #10266 https://github.com/pharo-project/pharo/pull/10266 Speed ===== - speedup-specialSelectorIndexOrNil #10277 https://github.com/pharo-project/pharo/pull/10277 Cleanups ======== - Cleanup Beacon #10281 https://github.com/pharo-project/pharo/pull/10281 - Cleanup-Merge-FullBlockClosure1 #10272 https://github.com/pharo-project/pharo/pull/10272 - 10274-Cleanup-cleanup-IRBytecodeGeneratorv3VMHeader #10275 https://github.com/pharo-project/pharo/pull/10275 - 10231-Cleanup-check-references-to-EncoderForSistaV1 #10243 https://github.com/pharo-project/pharo/pull/10243

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This week (42/2021) on the Pharo Issue Tracker
by Marcus Denker Oct. 22, 2021

Oct. 22, 2021

We merged 34 PRs and closed 35 issues. Literal Sharing =============== Since Pharo9, literals are compiled as read-only objects. This used to be a source of ugly bugs (code accidentally changing a literal, but the source not showing it). As we now can not change literals, and identity changes anyway on recompile, we are free to unify literals over the whole image. This seems to save ~2MB with the current build. We do this once as part of the build, users with large code bases can re-run it (see ImageCleaner>>#shareLiterals) and save some space. - Enable-SharedLiterals #10186 https://github.com/pharo-project/pharo/pull/10186 - 10190-Literal-Sharing-unify-nested-arrays #10195 https://github.com/pharo-project/pharo/pull/10195 Speed ===== - Use-equivalentTo-ReEquivalentSuperclassMethodsRule #10183 https://github.com/pharo-project/pharo/pull/10183 Features ======== - 10200-add-isClassSide-to-CompiledMethod #10202 https://github.com/pharo-project/pharo/pull/10202 - 4211 easy support for equality and hash with nice default behavior #4803 https://github.com/pharo-project/pharo/pull/4803 - Migrating RBInlineMethodRefactoring into Refactoring2 #10163 https://github.com/pharo-project/pharo/pull/10163 - Parameter refactoring migrations #10162 https://github.com/pharo-project/pharo/pull/10162 Class Parser ============ Work continous on the class parser / fluid class definitions - Changing uses: and trait: to use traits: in the class definition. #10199 https://github.com/pharo-project/pharo/pull/10199 - Removing #<< from SequentialCollection class #10197 https://github.com/pharo-project/pharo/pull/10197 Fixes ===== - Autofixes on class side raise DNU #10235 https://github.com/pharo-project/pharo/pull/10235 - fix: #10211 addSearch: -> addRule: adding two little tests to start #10220 https://github.com/pharo-project/pharo/pull/10220 - 9973-Different-behavior-in-Playground-for-deprecated-method-transformed-vs-nontransformed-deprecations #10222 https://github.com/pharo-project/pharo/pull/10222 - [P10] 8170-Pharo-image-freeze-on-Windows-after-some-hours-Idle-P10 #10188 https://github.com/pharo-project/pharo/pull/10188 - 10193-testNoEquivalentSuperclassMethods-failing-on-ci #10194 https://github.com/pharo-project/pharo/pull/10194 Cleanup - Old Blocks / Bytecode =============================== Cleaning the core system and compiler - 9929-Reflectivity-compiler-still-uses-pushClosureCopyCopiedValuesargsjumpTo #10177 https://github.com/pharo-project/pharo/pull/10177 - Cleanup-FullBlocks: remove dead code #10221 https://github.com/pharo-project/pharo/pull/10221 - Cleanup-optionFullBlockClosure #10229 https://github.com/pharo-project/pharo/pull/10229 - Remove-EncoderForV3PlusClosures #10181 https://github.com/pharo-project/pharo/pull/10181 - Fix 10178: Cleanup OldBlocks Compiler/Decompiler #10180 https://github.com/pharo-project/pharo/pull/10180 Cleanup ======= - Cleanup-Deprecated9-More #10236 https://github.com/pharo-project/pharo/pull/10236 - Release test to ensure we have no protocol names with leading or trailing spaces #10233 https://github.com/pharo-project/pharo/pull/10233 - Mark a few abstract refactorings #10246 https://github.com/pharo-project/pharo/pull/10246 - Mark abstract classes in Ring #10250 https://github.com/pharo-project/pharo/pull/10250 - "Tools-Test" package should be "Tools-Tests" #10244 https://github.com/pharo-project/pharo/pull/10244 - Fix lint in Array>>#copyWithDependent: #10252 https://github.com/pharo-project/pharo/pull/10252 - Cleanup: no leading or trailing space in method category name #10230 https://github.com/pharo-project/pharo/pull/10230 - 10205-LiteralVariable-classcheckValidName-has-commented-out-code #10207 https://github.com/pharo-project/pharo/pull/10207 - Remove empty protocols in ZnStaticFileServerDelegate #10224 https://github.com/pharo-project/pharo/pull/10224 - Cleanup-hasLinks #10206 https://github.com/pharo-project/pharo/pull/10206 - 10191-MCClassDefinitionring2LayoutType-misses-Double-layouts #10192 https://github.com/pharo-project/pharo/pull/10192 - Fix a few lints regarding categorization of "converting" #10175 https://github.com/pharo-project/pharo/pull/10175 - Adopte testNoUncategorizedMethods #10169 https://github.com/pharo-project/pharo/pull/10169 Pharo9 ====== [P9] 8170-Pharo-image-freeze-on-Windows-after-some-hours-Idle #10179 https://github.com/pharo-project/pharo/pull/10179

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Book the dates: Pharo Days 2021: 3/4 March 2022 @ Lille
by stephane ducasse Oct. 22, 2021

Oct. 22, 2021

Dear Pharoers We are super excited to announce the dates of the next Pharo Days. Pharo Days 2021 will be held at Lille 3/4 March 2022 We will set soon a program and a website. Stay tuned. S.

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This week (41/2021) on the Pharo Issue Tracker
by Marcus Denker Oct. 15, 2021

Oct. 15, 2021

We merged 25 Pull Requests and closed 13 Issue tracker entries Pharo 9 ======== - [P9] backporting-new-iceberg #10176 https://github.com/pharo-project/pharo/pull/10176 - enabling-debug-window-in-windows-P9 #10129 https://github.com/pharo-project/pharo/pull/10129 - [P9] 10085-Pharo-does-not-work-on-network-drive-on-Windows #10137 https://github.com/pharo-project/pharo/pull/10137 - P9-Backport-PR10099: Added two missing methods #tfPointerAddress #10146 https://github.com/pharo-project/pharo/pull/10146 - 10147-Fix-invalid-non-Boolean-return-when-CPU-watcher-is-enabled-For-P9--P10 #10148 https://github.com/pharo-project/pharo/pull/10148 - 10152-Backport-Pharo9-10113-speedup-isReferenced-for-ClassVariables-from-a-Pool- #10157 https://github.com/pharo-project/pharo/pull/10157 Pharo 8 ======= - Fix invalid (non-Boolean) return when CPU watcher is enabled #10134 https://github.com/pharo-project/pharo/pull/10134 Fixes ===== - 10085-Pharo-does-not-work-on-network-drive-on-Windows-P10 #10138 https://github.com/pharo-project/pharo/pull/10138 - 10144-SystemNavigationobsoleteClasses-should-use-isObsolete #10145 https://github.com/pharo-project/pharo/pull/10145 - Fix InstructionStream>>nextPc: #10044 https://github.com/pharo-project/pharo/pull/10044 - [P10] 10147-Fix-invalid-non-Boolean-return-when-CPU-watcher-is-enabled-For-P9--P10 #10149 https://github.com/pharo-project/pharo/pull/10149 Features ======= - Provide autofix rule to have no unreferenced ivars left #10126 https://github.com/pharo-project/pharo/pull/10126 - enabling-debug-window-in-windows-P10 #10130 https://github.com/pharo-project/pharo/pull/10130 - Provide Autofix for ReProperMethodProtocolNameRule #10140 https://github.com/pharo-project/pharo/pull/10140 Speed ====== - 10113-speedup-isReferenced-for-ClassVariables-from-a-Pool #10151 https://github.com/pharo-project/pharo/pull/10151 Cleanup ======= - Cleanup-theNonMetaParentName #10118 https://github.com/pharo-project/pharo/pull/10118 - Cleanup package Refactoring-Changes #10142 https://github.com/pharo-project/pharo/pull/10142 - Improve naming in ProtocolConventionTest #10132 https://github.com/pharo-project/pharo/pull/10132 - Cleanup-defaultTimeLimit #10153 https://github.com/pharo-project/pharo/pull/10153 - clean-dirty-packages-from-repo #10154 https://github.com/pharo-project/pharo/pull/10154 - Debugger infrastructure improvement and cleaning #10133 https://github.com/pharo-project/pharo/pull/10133 - Protocol for all class side methods #reset changed to initialization #9999 https://github.com/pharo-project/pharo/pull/9999 - Refactoring2-Cleanup-parentSuchAs #10158 https://github.com/pharo-project/pharo/pull/10158 - Ring-Cleanup-theNonMetaClass #10161 https://github.com/pharo-project/pharo/pull/10161 - 10065-Cleanup-ClassBuilder-remove-uses #10160 https://github.com/pharo-project/pharo/pull/10160

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Something weird in VirtualMachine>>#maxExternalSemaphores:
by Sven Van Caekenberghe Oct. 13, 2021

Oct. 13, 2021

Hi, The ExternalSemaphoreTable is an important resource since it holds 3 Semaphores per Socket (network connection). The size of ExternalSemaphoreTable determines how many such resources can be used concurrently. VM parameter 49 holds this limit, it is accessed by VirtualMachine>>#maxExternalSemaphores. The default for Pharo 9 seems to be 256 currently. There is a method VirtualMachine>>#maxExternalSemaphoresSilently: that can be used to set this limit higher. This seems to work. Now, there are some limitations here: the number must be a power of 2, higher that the one set before and lower than 64K. BTW the number of file descriptors for files and sockets is also limited by the OS for its processes. Also, while growing the table, the Semaphores become unavailable to the VM for a very short period of time, so they could miss signals, leading to IO issues. For this reason, it seems that the design goal was to not allow this to grow during normal use, only during startup or upfront configuration. Now comes the weird thing: the implementation/code of VirtualMachine>>#maxExternalSemaphores: This is the method called when the current table is too small and when it wants to grow larger than the current VirtualMachine>>#maxExternalSemaphores. The implementation calls #maxExternalSemaphoresSilently: in a forked thread, after signalling a SystemNotification with a full explanation. But why should this be forked in the first place ? Then in the main thread, it signals an error ! Presumably because the design goals mentioned before. These two actions are in conflict. All this is probably the result of well meant evolution and refactoring, but it is quite confusing. My first idea would be: let the caller raise the error and don't try raising the limit, remove the current implementation and replace it by what is now #maxExternalSemaphoresSilently: What do you think ? Sven

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Bloc and Spec2
by o lu Oct. 12, 2021

Oct. 12, 2021

What is the difference between Bloc and Spec2? Sent with [ProtonMail](https://protonmail.com/) Secure Email.

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[Pharo 8.0] Build #1146: Fix invalid (non-Boolean) return when CPU watcher is enabled
by ci-pharo-ci-jenkins2＠inria.fr Oct. 12, 2021

Oct. 12, 2021

There is a new Pharo build available! The status of the build #1146 was: FAILURE. The Pull Request #10134 was integrated: "Fix invalid (non-Boolean) return when CPU watcher is enabled" Pull request url: https://github.com/pharo-project/pharo/pull/10134 Issue Url: https://github.com/pharo-project/pharo/issues/Pharo8.0 Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%2…

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This week (40/2021) on the Pharo Issue Tracker MD
by Marcus Denker Oct. 11, 2021

Oct. 11, 2021

We merged 23 PRs and fixed 19 Issue Tracker entries. Pharo9 ====== - Backport #10111: isReferenced-is-not-working-for-PoolVariables #10128 https://github.com/pharo-project/pharo/pull/10128 - 10123-Failing-test-Pharo9-ReleaseTesttestWorldMenuHasHelpForAllEntries #10127 https://github.com/pharo-project/pharo/pull/10127 - 10121-backport-Pharo9-Fix-failing-tests-in-CI-ZnHTTPSTesttestGForceInria #10122 https://github.com/pharo-project/pharo/pull/10122 - Fixes #10037. Now it only register world menu entries if the class "marked with praâ¦ #10055 https://github.com/pharo-project/pharo/pull/10055 - 9927-Check-Pharo9-Defining-variables-in-the-debugger-DNU-isForScripting-9925 #10120 https://github.com/pharo-project/pharo/pull/10120 - 10116-Backport-Pharo9-fixing-fuel-platform-dependency-10109 #10119 https://github.com/pharo-project/pharo/pull/10119 Fixes ===== - 10110-isReferenced-is-not-working-for-PoolVariables #10111 https://github.com/pharo-project/pharo/pull/10111 - Added two missing methods: tfPointerAddress https://github.com/pharo-project/pharo/pull/10099 - fixing-fuel-platform-dependency #10109 https://github.com/pharo-project/pharo/pull/10109 - 10067-CDClassDefinitionParserparseSelectorPartwithArgument-misses-subclass-definition-symbols #10092 https://github.com/pharo-project/pharo/pull/10092 - Fix failing tests in CI: ZnHTTPSTest>>testGForceInria #10091 https://github.com/pharo-project/pharo/pull/10091 Cleanups ========= - Cleanup-Unused-gtInspector-Rules #10112 https://github.com/pharo-project/pharo/pull/10112 - 10078-To-check-CompiledMethodlocalReadsSelf-does-isFFIMethod-check #10086 https://github.com/pharo-project/pharo/pull/10086 - ClassParser: Small Cleanup and Test for CompiledMethod #10097 https://github.com/pharo-project/pharo/pull/10097 - Deprecation-Rewrites-Ring #10115 https://github.com/pharo-project/pharo/pull/10115 - 10025-ObjectLayout-classlayoutForType-should-be-moved-to-the-Monticello-package #10087 https://github.com/pharo-project/pharo/pull/10087 - Cleanup Changeset class #10103 https://github.com/pharo-project/pharo/pull/10103 - Small cleanups: ByteString #10101 https://github.com/pharo-project/pharo/pull/10101 - Cleanup Color class #10105 https://github.com/pharo-project/pharo/pull/10105 - Deprecate #beginsWithEmpty:caseSensitive. Users should use beginsWithâ¦ #10016 https://github.com/pharo-project/pharo/pull/10016 - Fix #9907: improes DoesNotUnderstand exception's messageText #9982 https://github.com/pharo-project/pharo/pull/9982 - Use Jenkins git plugin #7141 https://github.com/pharo-project/pharo/pull/7141 - Small cleanups - AbstractWorldRenderer hierarchy #10082 https://github.com/pharo-project/pharo/pull/10082

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