- Pharo-dev - lists.pharo.org

[ANN] Ephemeron Support is Ready

by Guille Polito

Hi All, Since this morning, in Pharo #60065, Ephemeron support is in the image. Most of the changes are infrastructural, so far transparent for the users. It is important to notice that even while the support is there, it is not enabled by default. Also, this required changes in the virtual machine that are not yet distributed everywhere. For the ones that would like more detail, I invite you to read the following :) * On the infrastructure side - There is support to create Ephemeric classes and load them from monticello - There is a new finalization mechanism (by default disabled) that will process Ephemerons using a finalization queue. This will avoid scanning collections in look for weak objects to finalize ,as it happens now with the WeakDependent mechanism in WeakArray. - System-Finalization features two new classes *Ephemeron* and *EphemeronRegistry*. For the ones that want more details on Ephemerons, you can read the associated paper [1], or the class comment of Ephemeron: I represent ephemeric key-value objects. Ephemerons are key-value objects (subclasses of Association) with special semantics during garbage collection. My special behavior can resumed as follows: - The garbage collection will iterate my instances only if the key is not referenced strongly by another object. - Then, if no strong references to the key are found, then the values of this ephemeron are hold weakly. - Otherwise, the values are hold strongly. In this implementation, an Ephemeron can hold more than one value, which are all treated in the same manner. This ephemeron instance knows its container, which allows the ephemeron to remove itself from a container (such as a Dictionary) upon finalization. !! Example usages In general terms, do not use myself directly. Use instead an Ephemeric container like EphemeronRegistry. An Ephemeron registry will guarantee the collection of keys and values of the object inside the Ephemeron. Otherwise, if you want to use it, you can create an Ephemeron as any association: ephemeron := Ephemeron key: aKey value: aValue. ephemeron container: aContainer. !! Ephemeron Finalization When an ephemeron's key is hold strongly just by the ephemeron itself, the Ephemeron will be mourned (finalized). That means that the VM will: - put the Ephemeron in the mourning queue waiting for the image to take care of mourning - make the Ephemeron non ephemeric. That is, the ephemeron instance cannot be reused. On the image side, the finalization process will send the message #mourn to an Ephemeron. #mourn will #finalize the Ephemeron's key, and remove the Ephemeron from it's container to allow its collection during a subsequent garbage collection. !! More Documentation You can read the associated paper to understand better the semantics of ephemerons: [1]Ephemerons: A New Finalization Mechanism. Barry Hayes. OOPSLA '97 - WARNING: to be able to use ephemerons, you need to use the *latestVm* that has several fixes for making ephemerons work, and you need to enable ephemerons on the image side by evaluating: Smalltalk supportsQueueingFinalization: true. - With latest vm and ephemerons enabled, tests should be green, otherwise they are skipped * From the user point of view: - The Weak registries were not yet migrated to the new finalization mechanism. - We expect nothing will change from the user point of view. Just less memory leaks. * Next steps (in order) 1) Bless the latest vm as stable 2) Enable queueing finalization by default 3) Replace Weak Registry by Ephemeron Registry. Informed by: Guille

June 7, 2016

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/60066 Home: https://github.com/pharo-project/pharo-core

June 7, 2016

[pharo-project/pharo-core] 70dc7b: 60066

by GitHub

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 70dc7b60e66385b0ffddd34338941c2c864f4314 https://github.com/pharo-project/pharo-core/commit/70dc7b60e66385b0ffddd343… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-06-07 (Tue, 07 Jun 2016) Changed paths: M ConfigurationOfTxText.package/ConfigurationOfTxText.class/instance/symbolic versions/stable_.st A ConfigurationOfTxText.package/ConfigurationOfTxText.class/instance/versions/version2123_.st A Kernel.package/CompiledMethod.class/class/class initialization/checkBytecodeSetConflictsInMethodsWith_.st A Kernel.package/CompiledMethod.class/class/class initialization/checkIsValidBytecodeEncoder_.st M Kernel.package/CompiledMethod.class/class/class initialization/initialize.st M Kernel.package/CompiledMethod.class/class/class initialization/installPrimaryBytecodeSet_.st M Kernel.package/CompiledMethod.class/class/class initialization/installSecondaryBytecodeSet_.st A Kernel.package/CompiledMethod.class/instance/testing/usesPrimaryBytecodeSet.st A Kernel.package/CompiledMethod.class/instance/testing/usesSecondaryBytecodeSet.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/README.md R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/definition.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genBranchPopFalse_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genBranchPopTrue_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genDup.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genJumpLong_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genJump_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPop.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushInstVarLong_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushInstVar_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushLiteralVar_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushLiteral_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushReceiver.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushSpecialLiteral_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushTemp_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genPushThisContext.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genReturnReceiver.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genReturnSpecialLiteral_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genReturnTop.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genReturnTopToCaller.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genSendSuper_numArgs_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genSend_numArgs_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStoreInstVarLong_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStoreInstVar_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStoreLiteralVar_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStorePopInstVarLong_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStorePopInstVar_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStorePopLiteralVar_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStorePopTemp_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3.class/instance/bytecode generation/genStoreTemp_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/README.md R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/definition.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/bytecode generation/genPushClosureCopyNumCopiedValues_numArgs_jumpSize_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/bytecode generation/genPushConsArray_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/bytecode generation/genPushNewArray_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/bytecode generation/genPushRemoteTemp_inVectorAt_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/bytecode generation/genStorePopRemoteTemp_inVectorAt_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/bytecode generation/genStoreRemoteTemp_inVectorAt_.st R OpalCompiler-Core.package/OpalEncoderForLongFormV3PlusClosures.class/instance/testing/supportsClosureOpcodes.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60065.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60066.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60065.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60066.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 60066 18420 Fix Metacello-Core extensions capitalization https://pharo.fogbugz.com/f/cases/18420 18417 Fix Reflectivity extensions capitalization https://pharo.fogbugz.com/f/cases/18417 18422 CompiledMethod depends on old BytecodeEncoder classes https://pharo.fogbugz.com/f/cases/18422 18380 ConfigurationOfTxText is not in sync with the current Pharo package versions https://pharo.fogbugz.com/f/cases/18380 http://files.pharo.org/image/60/60066.zip

June 7, 2016

GLMPresentation >> window looks strange

by Guille Polito

Hi! We were browsing with Steph users of #announce: and we arrived to the following method: GLMPresentation >> window self announce: (GLMWindowRequest new action: [ :aWindow | ^ aWindow ]). ^ nil And we could not stop noticing that, while the announcement, probably originally meant to decouple the Presentation and the window, is now coupling them in a non-clear way... I mean, the coupling is there, but is now hidden in an announcement. Also, the usage of the non-local return makes the assumption that the announcement will be executed on the same process... And that is at most strange, but also looks buggy. Why is this method not a normal accessor? Guille

June 7, 2016

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/60065 Home: https://github.com/pharo-project/pharo-core

June 7, 2016

[pharo-project/pharo-core] c03d19: 60065

by GitHub

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: c03d194384c8d581f6edf9ff72723b12c2277c00 https://github.com/pharo-project/pharo-core/commit/c03d194384c8d581f6edf9ff… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-06-07 (Tue, 07 Jun 2016) Changed paths: A ConfigurationOfRubric.package/ConfigurationOfRubric.class/instance/baselines/baseline23_.st M ConfigurationOfRubric.package/ConfigurationOfRubric.class/instance/symbolic versions/stable_.st A ConfigurationOfRubric.package/ConfigurationOfRubric.class/instance/versions/version2194_.st A ConfigurationOfRubric.package/ConfigurationOfRubric.class/instance/versions/version2201_.st A ConfigurationOfRubric.package/ConfigurationOfRubric.class/instance/versions/version220_.st M ConfigurationOfUnifiedFFI.package/ConfigurationOfUnifiedFFI.class/instance/versions/v0%5F20%5F2_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60064.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60065.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60064.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60065.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 60065 18415 Fix Regex-Core extensions capitalization https://pharo.fogbugz.com/f/cases/18415 18404 ConfigurationOfUnifiedFFI not in sync with current Pharo package versions https://pharo.fogbugz.com/f/cases/18404 18401 The ConfigurationOfRubric is not in sync https://pharo.fogbugz.com/f/cases/18401 http://files.pharo.org/image/60/60065.zip

June 7, 2016

[pharo-project/pharo-core] 1838ea: 60064

by GitHub

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 1838ea43bf2a0d7d0c6e5f552f2d295d96b4d359 https://github.com/pharo-project/pharo-core/commit/1838ea43bf2a0d7d0c6e5f55… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-06-07 (Tue, 07 Jun 2016) Changed paths: M CodeImportCommandLineHandlers.package/STCommandLineHandler.class/instance/installing/installSourceFile_.st A CodeImportCommandLineHandlers.package/STCommandLineHandler.class/instance/installing/skipShebangFrom_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/README.md A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/catalog/catalogContactInfo.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/catalog/catalogDescription.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/catalog/catalogKeyClassesAndExample.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/catalog/catalogKeywords.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/mc-manipulation/currentVersions.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/mc-manipulation/currentVersionsOf_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/mc-manipulation/mainRepo.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/mc-manipulation/versionFromWC_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/properties/projectName.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/properties/publicRepoLocations.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/properties/rootConfNamesForLookup.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/properties/supportedVersions.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting-codegen/confSourceFor_with_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting-codegen/symbolicSourceFor_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting/commitSelfWithVersion_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting/commitToPublicRepos_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting/copyVersions_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting/createConfFor_with_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting/createSymbolicFor_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/class/snapshotting/makeVersion_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/definition.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/instance/symbolic versions/stable_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/instance/versions/versionv3%5F0%5F2_.st A QualityAssistant-Test.package/QACritiqueTest.class/README.md A QualityAssistant-Test.package/QACritiqueTest.class/definition.st A QualityAssistant-Test.package/QACritiqueTest.class/instance/accessing/testFixAction.st A QualityAssistant-Test.package/QACritiqueTest.class/instance/as yet unclassified/runWithDidalogPopping_.st A QualityAssistant-Test.package/QACritiqueTest.class/instance/as yet unclassified/runWithMorphicDidalogPopping_.st A QualityAssistant-Test.package/QACritiqueTest.class/instance/as yet unclassified/testGuidedBan.st M QualityAssistant.package/extension/ReSystemAnnouncer/instance/notifyViewedDiffFor_of_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60063.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60064.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60063.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60064.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st R System-CommandLineHandler.package/extension/CodeImporter/instance/shebang.st R System-CommandLineHandler.package/extension/CodeImporter/instance/skipShebang.st A Tool-Base.package/PharoShortcuts.class/instance/as yet unclassified/delWordShortcut.st M Tool-Base.package/PharoShortcuts.class/instance/keymaps - code/displayIfFalseShortcut.st M Tool-Base.package/PharoShortcuts.class/instance/keymaps - editor edit/backwardWordDeleteShortcut.st M Tool-Base.package/PharoShortcuts.class/instance/keymaps - editor navigation/forwardWordShortcut.st Log Message: ----------- 60064 18427 System-CommandLineHandler should be abstract and not extend particular command line handlers https://pharo.fogbugz.com/f/cases/18427 18394 change some more keymapping definitions in PharoShortcuts https://pharo.fogbugz.com/f/cases/18394 18412 QAViewedDiff(Object)>>doesNotUnderstand: #critic: https://pharo.fogbugz.com/f/cases/18412 http://files.pharo.org/image/60/60064.zip

June 7, 2016

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/60064 Home: https://github.com/pharo-project/pharo-core

June 7, 2016

[pharo-project/pharo-core] 33ed32: 60063

by GitHub

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 33ed32f27e6dee56c7b9df21ebb2ee1ec0392407 https://github.com/pharo-project/pharo-core/commit/33ed32f27e6dee56c7b9df21… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-06-07 (Tue, 07 Jun 2016) Changed paths: M Keymapping-Tests.package/AbstractKeymappingTest.class/README.md R Keymapping-Tests.package/AbstractKeymappingTest.class/instance/as yet unclassified/eventKey_.st R Keymapping-Tests.package/AbstractKeymappingTest.class/instance/as yet unclassified/eventKey_alt_.st R Keymapping-Tests.package/AbstractKeymappingTest.class/instance/as yet unclassified/eventKey_alt_ctrl_command_shift_.st R Keymapping-Tests.package/AbstractKeymappingTest.class/instance/as yet unclassified/eventKey_command_.st R Keymapping-Tests.package/AbstractKeymappingTest.class/instance/as yet unclassified/eventKey_ctrl_.st R Keymapping-Tests.package/AbstractKeymappingTest.class/instance/as yet unclassified/eventKey_shift_.st A Keymapping-Tests.package/AbstractKeymappingTest.class/instance/utilities/eventKey_.st A Keymapping-Tests.package/AbstractKeymappingTest.class/instance/utilities/eventKey_alt_.st A Keymapping-Tests.package/AbstractKeymappingTest.class/instance/utilities/eventKey_alt_ctrl_command_shift_.st A Keymapping-Tests.package/AbstractKeymappingTest.class/instance/utilities/eventKey_command_.st A Keymapping-Tests.package/AbstractKeymappingTest.class/instance/utilities/eventKey_ctrl_.st A Keymapping-Tests.package/AbstractKeymappingTest.class/instance/utilities/eventKey_shift_.st M Keymapping-Tests.package/KMDispatcherTestCase.class/instance/tests/testNoMultiTrigger.st M Keymapping-Tests.package/KMKeymapTest.class/instance/tests/testExecute.st R Keymapping-Tests.package/KMMockMorph.class/README.md R Keymapping-Tests.package/KMMockMorph.class/definition.st M Keymapping-Tests.package/KMPerInstanceTests.class/instance/tests/testAddMoreThanOneHandler.st M Keymapping-Tests.package/KeymapBuilderTest.class/instance/tests/testAttachKeymapAndExecuteExecutes.st M Multilingual-Languages.package/LanguageEnvironment.class/class/accessing/localeID_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60062.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60063.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60062.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60063.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st A System-Finalization.package/extension/Object/instance/mourn.st A System-Localization.package/LocaleID.class/class/accessing-defaults/default.st M System-Support.package/SmalltalkImage.class/instance/miscellaneous/metacelloPlatformAttributes.st M System-Support.package/SmalltalkImage.class/instance/system attributes/supportsQueueingFinalization.st A Tests.package/EphemeronTests.class/README.md A Tests.package/EphemeronTests.class/definition.st A Tests.package/EphemeronTests.class/instance/tests/testEphemeronAreNotFinalizedIfCollected.st A Tests.package/EphemeronTests.class/instance/tests/testEphemeronIsNotRemovedFromRegistryUponFinalizationIfKeyIsReferenced.st A Tests.package/EphemeronTests.class/instance/tests/testEphemeronIsRemovedFromRegistryUponFinalization.st A Tests.package/EphemeronTests.class/instance/tests/testEphemeronKeyIsFinalizedWhenKeyIsNotHoldStrongly.st A Tests.package/EphemeronTests.class/instance/tests/testEphemeronKeyIsNotFinalizedWhenKeyIsHoldStrongly.st A Tests.package/EphemeronTests.class/instance/tests/testInterconnectedEphemeronsAreCollectedIfKeysAreNotReferencedFromTheOutside.st A Tests.package/EphemeronTests.class/instance/tests/testInterconnectedEphemeronsAreNotCollectedIfAKeyIsReferencedFromTheOutside.st A Tests.package/EphemeronTests.class/instance/tests/testInterconnectedEphemeronsAreNotCollectedIfTheOtherKeyIsReferencedFromTheOutside.st Log Message: ----------- 60063 18410 Remove KMMockMorph https://pharo.fogbugz.com/f/cases/18410 18398 LanguageEnvironment class>>#localeID: can cause endless loop https://pharo.fogbugz.com/f/cases/18398 18406 Add EphemeronTests https://pharo.fogbugz.com/f/cases/18406 18400 Add Pharo 6 to #metacelloPlatformAttributes (but keep Pharo 5 for now) https://pharo.fogbugz.com/f/cases/18400 http://files.pharo.org/image/60/60063.zip

June 7, 2016

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/60063 Home: https://github.com/pharo-project/pharo-core

June 7, 2016