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Re: [Pharo-dev] [squeak-dev] The .changes file should be bound to a single image
by Max Leske July 2, 2016

July 2, 2016

Itâs nice to see the enthusiasm (both pro and con) on this issue. I just want to clarify that it has nothing to do with a class room setting, where the changes file is being shared or copied so students have access. I have run into the corrupted .changes file problem myself a couple of times for two reasons mainly: a) Iâve done a lot of work but need to check something against code that wasnât modified (and no, checking package changes in Monticello wouldnât help in the case Iâm thinking of. Imagine for example a huge refactoring across multiple packages). So I open a second copy of the image. I keep both images open because its convenient but at some point I accidentally make a change in the wrong image. Now Iâm screwed. b) I forgot that I already had the image running (e.g. minimised). I start a fresh copy and work on it until I realise that some of my method sources are broken. Again: screwed. Another thing I want to mention is that the semantics of flush depend on the operating / file system (I have experienced this first hand between Linux (ext4) and OS X (HSF+)). Just because youâve flushed youâre buffer doesnât mean that the contents have actually been written to the file. So while it may be true that there is a #flush missing somewhere I would not expect that adding the #flush will solve the problem entirely (which is one reason for proposing a locking mechanism in the first place). Cheers, Max

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[pharo-project/pharo-core]
by GitHub July 1, 2016

July 1, 2016

Branch: refs/tags/60131 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 416d6e: 60131
by GitHub July 1, 2016

July 1, 2016

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 416d6ec3e477a7a3375e31e03ac0889ff9e67920 https://github.com/pharo-project/pharo-core/commit/416d6ec3e477a7a3375e31e0… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-07-01 (Fri, 01 Jul 2016) Changed paths: M Kernel-Tests.package/BehaviorTest.class/instance/test - properties/testPropertyValueAtPut.st M Kernel-Tests.package/BehaviorTest.class/instance/test - properties/testRemoveProperty.st M Kernel-Tests.package/CompiledMethodTest.class/instance/tests - testing/testSendsSelector.st M OpalCompiler-Tests.package/OCCompilerTest.class/instance/literals/testScaledDecimalLiterals.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60130.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60131.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60130.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60131.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M System-Settings.package/SystemSettingsPersistence.class/class/cleanup/cleanUp.st M System-Settings.package/SystemSettingsPersistence.class/class/system startup/resumeSystemSettings.st A Traits.package/TBehavior.class/instance/accessing-properties/propertyAt_.st A Traits.package/TBehavior.class/instance/accessing-properties/propertyAt_ifAbsent_.st A Traits.package/TBehavior.class/instance/accessing-properties/propertyAt_put_.st M Traits.package/TBehavior.class/instance/accessing-properties/propertyValueAt_.st M Traits.package/TBehavior.class/instance/accessing-properties/propertyValueAt_ifAbsent_.st M Traits.package/TBehavior.class/instance/accessing-properties/propertyValueAt_put_.st M Traits.package/TClass.class/instance/initialize-release/obsolete.st M Traits.package/TClass.class/instance/testing/isObsolete.st Log Message: ----------- 60131 18661 Failing test: CompiledMethodTest>>#testSendsSelector https://pharo.fogbugz.com/f/cases/18661 18654 Setting are not being loaded AGAIN https://pharo.fogbugz.com/f/cases/18654 18660 Unify property API of Behaviours to follow that of RBMethodNode, RPackage and Slots https://pharo.fogbugz.com/f/cases/18660 18662 Failing test: OCCompilerTest>>#testScaledDecimalLiterals https://pharo.fogbugz.com/f/cases/18662 http://files.pharo.org/image/60/60131.zip

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[pharo-project/pharo-core]
by GitHub July 1, 2016

July 1, 2016

Branch: refs/tags/60130 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 97da12: 60130
by GitHub July 1, 2016

July 1, 2016

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 97da125bb7486afe8e37a2361691c9ed4d83a893 https://github.com/pharo-project/pharo-core/commit/97da125bb7486afe8e37a236… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-07-01 (Fri, 01 Jul 2016) Changed paths: M ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/instance/symbolic versions/stable_.st A ConfigurationOfFlatQA.package/ConfigurationOfFlatQA.class/instance/versions/versionv3%5F1%5F2_.st M ImportingResource-Help.package/ImportingResourceHelp.class/class/accessing/pages.st A ImportingResource-Help.package/ImportingResourceHelp.class/class/documentation/encodingAndDecoding.st M OpalCompiler-Core.package/OCAbstractMethodScope.class/instance/lookup/lookupTempVector_inContext_.st A OpalCompiler-Tests.package/MethodMapExamples.class/instance/examples/exampleTempNamedTempVectorInOptimizedBlock.st A OpalCompiler-Tests.package/MethodMapTests.class/instance/testing - temp access/testExampleTempNamedTempVectorInOptimizedBlock.st A Renraku.package/extension/RBParseTreeLintRule/instance/check_forCritiquesDo_ifNone_.st A Renraku.package/extension/RBParseTreeLintRule/instance/critiqueFor_about_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60129.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60130.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60129.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60130.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 60130 18645 Improvement of the ImportingResourceHelp https://pharo.fogbugz.com/f/cases/18645 18655 Store source intervals for critiques of RBParseTreeRules https://pharo.fogbugz.com/f/cases/18655 18615 Can not access named temp vector from within optimized block scope https://pharo.fogbugz.com/f/cases/18615 http://files.pharo.org/image/60/60130.zip

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[pharo-project/pharo-core]
by GitHub July 1, 2016

July 1, 2016

Branch: refs/tags/60129 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 844bf9: 60129
by GitHub July 1, 2016

July 1, 2016

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 844bf9820c946007460c542679ab9ac6cbd77256 https://github.com/pharo-project/pharo-core/commit/844bf9820c946007460c5426… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-07-01 (Fri, 01 Jul 2016) Changed paths: R AST-Core.package/RBProgramNode.class/instance/testing/isLastStatementInBlock.st M Kernel-Tests.package/CompiledMethodTest.class/instance/tests - testing/testContainsHalt.st M Kernel.package/Halt.class/class/once-reset/resetHaltOnce.st M Refactoring-Critics.package/RBDeadBlockRule.class/instance/initialization/initialize.st M Reflectivity-Tools.package/HaltOnceIconStyler.class/instance/defaults/iconBlock_.st M Reflectivity-Tools.package/HaltOnceIconStyler.class/instance/defaults/iconLabelBlock_.st R Reflectivity-Tools.package/IconStyler.class/instance/as yet unclassified/test.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60128.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60129.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60128.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60129.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st A System-Support.package/VirtualMachine.class/instance/parameters/parameter46Documentation.st M System-Support.package/VirtualMachine.class/instance/parameters/parameterAt_.st Log Message: ----------- 60129 18651 fix #haltOnce reset https://pharo.fogbugz.com/f/cases/18651 18632 Virtual Machine parameters need to be documented https://pharo.fogbugz.com/f/cases/18632 18620 CompiledMethodTest testContainsHalt fails https://pharo.fogbugz.com/f/cases/18620 18652 RBDeadBlockRule: use #isUsed, not isLastStatementInBlock https://pharo.fogbugz.com/f/cases/18652 http://files.pharo.org/image/60/60129.zip

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Percent-encoding problem
by Bernhard Pieber June 30, 2016

June 30, 2016

I have a web service where I have to use a URL with percent-encoded (URL encoded) special characters â German Umlauts â but not using UTF8 but ISO-8859-1. I have been given the following table for the âcorrectâ encodings: http://www.degraeve.com/reference/urlencoding.php I found out that I can use the following to get the encoding I need (%FC): ZnPercentEncoder new characterEncoder: (ZnCharacterEncoder newForEncoding: 'iso-8859-1'); encode: 'Ã¼'. However, when I try to use the encoded URL with ZnClient ZnClient new url: 'http://example.com/%FC'; get. I get a ZnUTF8Encoder>>errorIllegalLeadingByte (Illegal leading byte for utf-8 encoding). Any help is greatly appreciated. Cheers, Bernhard

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[pharo-project/pharo-core] b51a9d: 60128
by GitHub June 30, 2016

June 30, 2016

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: b51a9d4f140ce072fc066ca35a7fa3e7fe3b55b4 https://github.com/pharo-project/pharo-core/commit/b51a9d4f140ce072fc066ca3… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-06-30 (Thu, 30 Jun 2016) Changed paths: M ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/symbolic versions/stable_.st A ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/versions/version210_.st M ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/versions/version29_.st M ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/symbolic versions/stable_.st A ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/versions/version018_.st M ConfigurationOfGTInspectorCore.package/ConfigurationOfGTInspectorCore.class/instance/symbolic versions/stable_.st A ConfigurationOfGTInspectorCore.package/ConfigurationOfGTInspectorCore.class/instance/versions/version315_.st M ConfigurationOfGTSpotter.package/ConfigurationOfGTSpotter.class/instance/symbolic versions/stable_.st A ConfigurationOfGTSpotter.package/ConfigurationOfGTSpotter.class/instance/versions/version212_.st M ConfigurationOfGToolkitCore.package/ConfigurationOfGToolkitCore.class/instance/symbolic versions/stable_.st M ConfigurationOfGToolkitCore.package/ConfigurationOfGToolkitCore.class/instance/versions/version322_.st A ConfigurationOfGToolkitCore.package/ConfigurationOfGToolkitCore.class/instance/versions/version323_.st A ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/baselines/baseline34_.st M ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/symbolic versions/development_.st M ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/symbolic versions/stable_.st A ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/versions/version417_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60127.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60128.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60127.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60128.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 60128 Moose http://files.pharo.org/image/60/60128.zip

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[ANN] Ephemeron Support is Ready
by Guille Polito June 30, 2016

June 30, 2016

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

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