Squeak-dev August 2017

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42 participants
86 discussions

Next meeting of German-speaking Squeakers on October 14, 2017 in Potsdam, Germany
by Marcel Taeumel 08 Aug '17

08 Aug '17

Hi, there. This is a brief notification to all German-speaking Squeakers who are not (yet) subscribed to the Squeak e.V. mailing list. :) Our next meeting of the Squeak e.V. will be on October 14 in Potsdam, Germany. We are looking forward to have an interesting afternoon full of talks and demos. We welcome non-members to the meeting! ;) For more information, visit: http://squeak.de/news/ [http://squeak.de/news/] http://forum.world.st/Treffen-des-Squeak-e-V-am-14-Oktober-2017-in-Potsdam-… [http://forum.world.st/Treffen-des-Squeak-e-V-am-14-Oktober-2017-in-Potsdam-…] See you in Potsdam! Marcel

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The Trunk: Nebraska-tpr.50.mcz
by commits＠source.squeak.org 08 Aug '17

08 Aug '17

tim Rowledge uploaded a new version of Nebraska to project The Trunk: http://source.squeak.org/trunk/Nebraska-tpr.50.mcz ==================== Summary ==================== Name: Nebraska-tpr.50 Author: tpr Time: 7 August 2017, 6:38:27.598699 pm UUID: 633f7da3-da1d-44ee-8bdc-3f417d8db1ec Ancestors: Nebraska-tpr.49 Fix a dumb-thumb in the prior update =============== Diff against Nebraska-tpr.49 =============== Item was changed: ----- Method: NebraskaCommunicatorMorph>>textEntryFieldNamed:with:help: (in category 'as yet unclassified') ----- textEntryFieldNamed: aSymbol with: aString help: helpString | f col | f := (StringMorph new contents: aString; font: Preferences standardEToysFont; yourself) setBalloonText: helpString; on: #mouseUp send: #editEvent:for: to: self. self field: aSymbol is: f. + col := (self inAColumn: {f}) color: Color white; hResizing: #shrinkWrap. - col _ (self inAColumn: {f}) color: Color white; hResizing: #shrinkWrap. ^col!

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The Trunk: Morphic-tpr.1348.mcz
by commits＠source.squeak.org 08 Aug '17

08 Aug '17

tim Rowledge uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-tpr.1348.mcz ==================== Summary ==================== Name: Morphic-tpr.1348 Author: tpr Time: 7 August 2017, 4:40:57.485319 pm UUID: b8af09c4-97da-4835-a036-b1c557a8ab92 Ancestors: Morphic-mt.1347 Explain that an underscore assignment requires a Preference setting =============== Diff against Morphic-mt.1347 =============== Item was changed: ----- Method: TextEditor>>explainChar: (in category 'explain') ----- explainChar: string "Does string start with a special character?" | char | char := string at: 1. char = $. ifTrue: [^'"Period marks the end of a Smalltalk statement. A period in the middle of a number means a decimal point. (The number is an instance of class Float)."']. char = $' ifTrue: [^'"The characters between two single quotes are made into an instance of class String"']. char = $" ifTrue: [^'"Double quotes enclose a comment. Smalltalk ignores everything between double quotes."']. char = $# ifTrue: [^'"The characters following a hash mark are made into an instance of class Symbol. If parenthesis follow a hash mark, an instance of class Array is made. It contains literal constants."']. (char = $( or: [char = $)]) ifTrue: [^'"Expressions enclosed in parenthesis are evaluated first"']. (char = $[ or: [char = $]]) ifTrue: [^'"The code inside square brackets is an unevaluated block of code. It becomes an instance of BlockClosure and is usually passed as an argument."']. (char = ${ or: [char = $}]) ifTrue: [^ '"A sequence of expressions separated by periods, when enclosed in curly braces, are evaluated to yield the elements of a new Array"']. (char = $< or: [char = $>]) ifTrue: [^'"<primitive: xx> means that this method is usually preformed directly by the virtual machine. If this method is primitive, its Smalltalk code is executed only when the primitive fails."']. char = $^ ifTrue: [^'"Uparrow means return from this method. The value returned is the expression following the ^"']. char = $| ifTrue: [^'"Vertical bars enclose the names of the temporary variables used in this method. In a block, the vertical bar separates the argument names from the rest of the code."']. + char = $_ ifTrue: [^'"Left arrow means assignment (deprecated, applies if the Preference for allow underscore assignment is set). The value of the expression after the left arrow is stored into the variable before it."']. - char = $_ ifTrue: [^'"Left arrow means assignment. The value of the expression after the left arrow is stored into the variable before it."']. char = $; ifTrue: [^'"Semicolon means cascading. The message after the semicolon is sent to the same object which received the message before the semicolon."']. char = $: ifTrue: [^'"A colon at the end of a keyword means that an argument is expected to follow. Methods which take more than one argument have selectors with more than one keyword. (One keyword, ending with a colon, appears before each argument).', '\\' withCRs, 'A colon before a variable name just inside a block means that the block takes an agrument. (When the block is evaluated, the argument will be assigned to the variable whose name appears after the colon)."']. char = $$ ifTrue: [^'"The single character following a dollar sign is made into an instance of class Character"']. char = $- ifTrue: [^'"A minus sign in front of a number means a negative number."']. char = $e ifTrue: [^'"An e in the middle of a number means that the exponent follows."']. char = $r ifTrue: [^'"An r in the middle of a bunch of digits is an instance of Integer expressed in a certain radix. The digits before the r denote the base and the digits after it express a number in that base."']. char = Character space ifTrue: [^'"the space Character"']. char = Character tab ifTrue: [^'"the tab Character"']. char = Character cr ifTrue: [^'"the carriage return Character"']. char = Character lf ifTrue: [^'"the line feed Character"']. ^nil!

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The Trunk: Kernel-tpr.1110.mcz
by commits＠source.squeak.org 08 Aug '17

08 Aug '17

tim Rowledge uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-tpr.1110.mcz ==================== Summary ==================== Name: Kernel-tpr.1110 Author: tpr Time: 7 August 2017, 4:38:16.198536 pm UUID: f7a1538d-4c10-4b42-9ec7-325d0ac94c8d Ancestors: Kernel-nice.1109 Correct an ancient underscore assignment =============== Diff against Kernel-nice.1109 =============== Item was changed: ----- Method: Semaphore>>wait (in category 'communication') ----- wait "Primitive. The active Process must receive a signal through the receiver before proceeding. If no signal has been sent, the active Process will be suspended until one is sent. Essential. See Object documentation whatIsAPrimitive." <primitive: 86> self primitiveFailed "excessSignals>0 + ifTrue: [excessSignals := excessSignals-1] - ifTrue: [excessSignals _ excessSignals-1] ifFalse: [self addLastLink: Processor activeProcess suspend]" !

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The Trunk: Tests-dtl.380.mcz
by commits＠source.squeak.org 06 Aug '17

06 Aug '17

David T. Lewis uploaded a new version of Tests to project The Trunk: http://source.squeak.org/trunk/Tests-dtl.380.mcz ==================== Summary ==================== Name: Tests-dtl.380 Author: dtl Time: 6 August 2017, 12:18:36.034473 pm UUID: a7c7e81f-c7f5-425f-8301-2e289bde3da1 Ancestors: Tests-eem.379 CompiledCode and its subclasses are a special case, and are identified as class type #compiledMethod rather than #bytes. An MCClassDefinition should identify this type correctly, otherwise changes to these classes may not be saved and reloaded correctly. Add tests to verify this for MCClassDefinition, and categorize the tests. =============== Diff against Tests-eem.379 =============== Item was changed: SystemOrganization addCategory: #'Tests-Bugs'! SystemOrganization addCategory: #'Tests-Compiler'! SystemOrganization addCategory: #'Tests-Dependencies'! SystemOrganization addCategory: #'Tests-Digital Signatures'! SystemOrganization addCategory: #'Tests-Environments'! SystemOrganization addCategory: #'Tests-Exceptions'! SystemOrganization addCategory: #'Tests-FilePackage'! SystemOrganization addCategory: #'Tests-Files'! SystemOrganization addCategory: #'Tests-Finalization'! SystemOrganization addCategory: #'Tests-Hex'! SystemOrganization addCategory: #'Tests-Installer-Core'! SystemOrganization addCategory: #'Tests-Localization'! SystemOrganization addCategory: #'Tests-Monticello'! SystemOrganization addCategory: #'Tests-Monticello-Mocks'! SystemOrganization addCategory: #'Tests-Monticello-Utils'! SystemOrganization addCategory: #'Tests-Object Events'! SystemOrganization addCategory: #'Tests-ObjectsAsMethods'! SystemOrganization addCategory: #'Tests-PrimCallController'! SystemOrganization addCategory: #'Tests-Release'! SystemOrganization addCategory: #'Tests-System-Object Storage'! SystemOrganization addCategory: #'Tests-System-Support'! SystemOrganization addCategory: #'Tests-Utilities'! SystemOrganization addCategory: #'Tests-VM'! SystemOrganization addCategory: #'Tests-System-Digital Signatures'! SystemOrganization addCategory: #'Tests-System-Preferences'! - SystemOrganization addCategory: #'Tests-MonticelloMocks'! Item was changed: + ----- Method: MCClassDefinitionTest>>classAComment (in category 'running') ----- - ----- Method: MCClassDefinitionTest>>classAComment (in category 'as yet unclassified') ----- classAComment ^ self class classAComment! Item was changed: + ----- Method: MCClassDefinitionTest>>creationMessage (in category 'running') ----- - ----- Method: MCClassDefinitionTest>>creationMessage (in category 'as yet unclassified') ----- creationMessage ^ MessageSend receiver: MCClassDefinition selector: #name:superclassName:category:instVarNames:classVarNames:poolDictionaryNames:classInstVarNames:type:comment:commentStamp:! Item was changed: + ----- Method: MCClassDefinitionTest>>tearDown (in category 'running') ----- - ----- Method: MCClassDefinitionTest>>tearDown (in category 'as yet unclassified') ----- tearDown super tearDown. Smalltalk at: 'MCMockClassC' ifPresent: [:c | c removeFromSystem]! Item was changed: + ----- Method: MCClassDefinitionTest>>testCannotLoad (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testCannotLoad (in category 'as yet unclassified') ----- testCannotLoad | d | d := self mockClass: 'MCMockClassC' super: 'NotAnObject'. self should: [d load] raise: Error. self deny: (Smalltalk hasClassNamed: 'MCMockClassC').! Item was changed: + ----- Method: MCClassDefinitionTest>>testComparison (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testComparison (in category 'as yet unclassified') ----- testComparison | d1 d2 d3 d4 | d1 := self mockClass: 'A' super: 'X'. d2 := self mockClass: 'A' super: 'Y'. d3 := self mockClass: 'B' super: 'X'. d4 := self mockClass: 'B' super: 'X'. self assert: (d1 isRevisionOf: d2). self deny: (d1 isSameRevisionAs: d2). self assert: (d3 isRevisionOf: d4). self assert: (d3 isSameRevisionAs: d4). self deny: (d1 isRevisionOf: d3). self deny: (d4 isRevisionOf: d2).! Item was changed: + ----- Method: MCClassDefinitionTest>>testCreation (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testCreation (in category 'as yet unclassified') ----- testCreation | d | d := self mockClassA asClassDefinition. self assert: d className = #MCMockClassA. self assert: d superclassName = #MCMock. self assert: d type = #normal. self assert: d category = self mockCategoryName. self assert: d instVarNames asArray = #('ivar'). self assert: d classVarNames asArray = #('CVar'). self assert: d classInstVarNames asArray = #(). self assert: d comment isString. self assert: d comment = self classAComment. self assert: d commentStamp = self mockClassA organization commentStamp! Item was changed: + ----- Method: MCClassDefinitionTest>>testDefinitionString (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testDefinitionString (in category 'as yet unclassified') ----- testDefinitionString | d | d := self mockClassA asClassDefinition. self assert: d definitionString = self mockClassA definition.! Item was changed: + ----- Method: MCClassDefinitionTest>>testEquals (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testEquals (in category 'as yet unclassified') ----- testEquals | a b | a := self mockClass: 'ClassA' super: 'SuperA'. b := self mockClass: 'ClassA' super: 'SuperA'. self assert: a = b! Item was changed: + ----- Method: MCClassDefinitionTest>>testEqualsSensitivity (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testEqualsSensitivity (in category 'as yet unclassified') ----- testEqualsSensitivity | message a b defA args defB | message := self creationMessage. a := #(ClassA SuperA CategoryA #(iVarA) #(CVarA) #(PoolA) #(ciVarA) typeA 'A comment' 'A'). b := #(ClassB SuperB CategoryB #(iVarB) #(CVarB) #(PoolB) #(ciVarB) typeB 'B comment' 'B'). defA := message valueWithArguments: a. 1 to: 8 do: [:index | args := a copy. args at: index put: (b at: index). defB := message valueWithArguments: args. self deny: defA = defB.]! Item was changed: + ----- Method: MCClassDefinitionTest>>testKindOfSubclass (in category 'testing - class type') ----- - ----- Method: MCClassDefinitionTest>>testKindOfSubclass (in category 'as yet unclassified') ----- testKindOfSubclass {self mockClassA. String. ByteString. WideString. BlockClosure. WeakArray. BoxedFloat64. SmallFloat64. CompiledMethod. ByteArray. DoubleByteArray. IntegerArray. DoubleWordArray. } do: [:c | self assert: c asClassDefinition kindOfSubclass equals: c kindOfSubclass]! Item was added: + ----- Method: MCClassDefinitionTest>>testKindOfSubclassForCompiledBlock (in category 'testing - class type') ----- + testKindOfSubclassForCompiledBlock + "CompiledCode and its subclasses are a special case." + | classDef | + "CompiledBlock should be like CompiledMethod, both now are subclassed from CompiledCode" + classDef := self mockClass: #CompiledBlock super: #CompiledCode type: #bytes. + self assert: #compiledMethod equals: classDef type. + self assert: CompiledBlock typeOfClass equals: classDef type. + ! Item was added: + ----- Method: MCClassDefinitionTest>>testKindOfSubclassForCompiledCode (in category 'testing - class type') ----- + testKindOfSubclassForCompiledCode + "CompiledCode and its subclasses are a special case." + | classDef | + "CompiledMethod is now a subclass of CompiledCode, which is also of type #compiledMethod" + classDef := self mockClass: #CompiledCode super: #ByteArray type: #bytes. + self assert: #compiledMethod equals: classDef type. + self assert: CompiledCode typeOfClass equals: classDef type. + + ! Item was added: + ----- Method: MCClassDefinitionTest>>testKindOfSubclassForCompiledMethod (in category 'testing - class type') ----- + testKindOfSubclassForCompiledMethod + "CompiledCode and its subclasses are a special case." + | classDef | + classDef := self mockClass: #CompiledMethod super: #CompiledCode type: #bytes. + self assert: #compiledMethod equals: classDef type. + self assert: CompiledMethod typeOfClass equals: classDef type. + ! Item was added: + ----- Method: MCClassDefinitionTest>>testKindOfSubclassForSocketAddress (in category 'testing - class type') ----- + testKindOfSubclassForSocketAddress + "A subclass of ByteArray that is not treated specially" + | classDef | + classDef := self mockClass: #SocketAddress super: #ByteArray type: #bytes. + self assert: #bytes equals: classDef type. + self assert: SocketAddress typeOfClass equals: classDef type. + + ! Item was changed: + ----- Method: MCClassDefinitionTest>>testLoadAndUnload (in category 'testing') ----- - ----- Method: MCClassDefinitionTest>>testLoadAndUnload (in category 'as yet unclassified') ----- testLoadAndUnload | d c | d := self mockClass: 'MCMockClassC' super: 'Object'. d load. self assert: (Smalltalk hasClassNamed: 'MCMockClassC'). c := (Smalltalk classNamed: 'MCMockClassC'). self assert: (c isKindOf: Class). self assert: c superclass = Object. self assert: c instVarNames isEmpty. self assert: c classVarNames isEmpty. self assert: c sharedPools isEmpty. self assert: c category = self mockCategoryName. self assert: c organization classComment = (self commentForClass: 'MCMockClassC'). self assert: c organization commentStamp = (self commentStampForClass: 'MCMockClassC'). d unload. self deny: (Smalltalk hasClassNamed: 'MCMockClassC').! Item was changed: ----- Method: MCTestCase>>mockClass:super: (in category 'mocks') ----- mockClass: className super: superclassName + ^ self mockClass: className super: superclassName type: #normal + ! - ^ MCClassDefinition - name: className - superclassName: superclassName - category: self mockCategoryName - instVarNames: #() - classVarNames: #() - poolDictionaryNames: #() - classInstVarNames: #() - type: #normal - comment: (self commentForClass: className) - commentStamp: (self commentStampForClass: className)! Item was added: + ----- Method: MCTestCase>>mockClass:super:type: (in category 'mocks') ----- + mockClass: className super: superclassName type: typeSymbol + ^ MCClassDefinition + name: className + superclassName: superclassName + category: self mockCategoryName + instVarNames: #() + classVarNames: #() + poolDictionaryNames: #() + classInstVarNames: #() + type: typeSymbol + comment: (self commentForClass: className) + commentStamp: (self commentStampForClass: className)!

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Re: [squeak-dev] apical, cdecl, what's the difference?
by Jakob Reschke 05 Aug '17

05 Aug '17

Here is what I found, experts please double-check (and I only looked up x86): The Windows API uses the stdcall calling convention, which has the same argument order and register preservation rules as cdecl, but the callee is responsible to pop arguments from the stack. In IA32FFIPlugin there is a macro PLATFORM_API_USES_CALLEE_POPS_CONVENTION, which is only 1 on Windows. If this is 1 and apicall is used (isCalleePopsConvention), the foreign function invocation code knows that the callee modifies the stack pointer and reacts accordingly. So, apicall does stdcall instead of cdecl on Windows, but not on the other x86 platforms. Stdcall is not the same as the Pascal calling convention, which pushes arguments from left to right, contrary to cdecl and stdcall, which push from right to left. Best, Jakob Am 04.08.2017 3:45 vorm. schrieb "tim Rowledge" <tim(a)rowledge.org>: Whilst looking at ancient OpenGL code I noted that many primitive calls used apicall and not cdecl. The swiki entry (http://wiki.squeak.org/ squeak/2426) for FFI is… vague, and explicitly mentions confusion about the matter. It wold be nice to clear this up, document it on the swiki and maybe even make a Help page to go into the image. tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim Strange OpCodes: MII: Mask all Interrupts and then Interrupt

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Live Programming in Smalltalk development environments survey + raffle
by Juraj Kubelka 04 Aug '17

04 Aug '17

— “We are apologize for multiple copies.” — Dear Smalltalker, Live programming frees developers from the "edit-compile-run" loop and allows people to interact with running programs very easily. Live programming is getting popular, but many of its features have been present in Smalltalk for a very long time. We want to understand how Smalltalk software developers use live programming features in practice. We would be grateful if you could participate in our 10-minute survey on this subject: http://bit.ly/2ufcg2D <http://bit.ly/2ufcg2D> As a thank you for your participation, you will be able to participate in a raffle to win a Smalltalk book of your choice. If you wish to participate, you will need to share your email with us, so that we can contact you. We will appreciate if you share the survey - Twitter post: https://twitter.com/JurajKubelka/status/893006267085709312 <https://twitter.com/JurajKubelka/status/893006267085709312> - Facebook post: https://www.facebook.com/juraj.kubelka/posts/10212505941300008 <https://www.facebook.com/juraj.kubelka/posts/10212505941300008> By participating in the survey you will: - help me to successfully finish my PhD, - push Smalltalk awareness in Live Programming research community, - bring new integrated electronic communication ideas, and - bring new ideas to improve our Smalltalk Live Programming experience :-) We will close the survey on Wednesday, August 9, 2017 AoE. Thank you and we really hope you enjoy participating in our survey! Juraj Kubelka, PhD Student at the University of Chile Romain Robbes, Professor at Free University of Bozen-Bolzano Alexandre Bergel, Professor at the University of Chile

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apical, cdecl, what's the difference?
by tim Rowledge 04 Aug '17

04 Aug '17

Whilst looking at ancient OpenGL code I noted that many primitive calls used apicall and not cdecl. The swiki entry (http://wiki.squeak.org/squeak/2426) for FFI is… vague, and explicitly mentions confusion about the matter. It wold be nice to clear this up, document it on the swiki and maybe even make a Help page to go into the image. tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim Strange OpCodes: MII: Mask all Interrupts and then Interrupt

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Fwd: [Esug-list] Live Programming in Smalltalk development environments survey + raffle
by Tobias Pape 03 Aug '17

03 Aug '17

> Begin forwarded message: > > From: Juraj Kubelka <juraj.kubelka(a)gmail.com> > Subject: [Esug-list] Live Programming in Smalltalk development environments survey + raffle > Date: 3. August 2017 um 09:49:44 MESZ > To: esug-list(a)lists.esug.org > > — “We are apologize for multiple copies.” — > > Dear Smalltalker, > Live programming frees developers from the "edit-compile-run" loop and allows people to interact with running programs very easily. Live programming is getting popular, but many of its features have been present in Smalltalk for a very long time. > > We want to understand how Smalltalk software developers use live programming features in practice. We would be grateful if you could participate in our 10-minute survey on this subject: http://bit.ly/2ufcg2D <http://bit.ly/2ufcg2D> > > As a thank you for your participation, you will be able to participate in a raffle to win a Smalltalk book of your choice. If you wish to participate, you will need to share your email with us, so that we can contact you. > > We will appreciate if you share the survey > - Twitter post: https://twitter.com/JurajKubelka/status/893006267085709312 <https://twitter.com/JurajKubelka/status/893006267085709312> > - Facebook post: https://www.facebook.com/juraj.kubelka/posts/10212505941300008 <https://www.facebook.com/juraj.kubelka/posts/10212505941300008> > > By participating in the survey you will: > - help me to successfully finish my PhD, > - push Smalltalk awareness in Live Programming research community, > - bring new integrated electronic communication ideas, and > - bring new ideas to improve our Smalltalk Live Programming experience :-) > > We will close the survey on Wednesday, August 9, 2017 AoE. > Thank you and we really hope you enjoy participating in our survey! > Juraj Kubelka, PhD Student at the University of Chile > Romain Robbes, Professor at Free University of Bozen-Bolzano > Alexandre Bergel, Professor at the University of Chile > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org

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The Trunk: Network-tpr.202.mcz
by commits＠source.squeak.org 03 Aug '17

03 Aug '17

tim Rowledge uploaded a new version of Network to project The Trunk: http://source.squeak.org/trunk/Network-tpr.202.mcz ==================== Summary ==================== Name: Network-tpr.202 Author: tpr Time: 2 August 2017, 5:56:32.822543 pm UUID: e26da09c-d555-47c0-8c95-d0fcc1085a03 Ancestors: Network-eem.201 Correct a misleading comment =============== Diff against Network-eem.201 =============== Item was changed: ----- Method: NetNameResolver class>>initializeNetwork (in category 'network initialization') ----- initializeNetwork + "Initialize the network drivers and record the semaphore to be used by the resolver. Do nothing if the network is already initialized. Signal NoNetworkError if network initialization fails." - "Initialize the network drivers and record the semaphore to be used by the resolver. Do nothing if the network is already initialized. Evaluate the given block if network initialization fails." "NetNameResolver initializeNetwork" self resolverStatus = ResolverUninitialized ifFalse: [^HaveNetwork := true]. "network is already initialized" HaveNetwork := false. "in case abort" Smalltalk newExternalSemaphoreDo: [ :semaphore :index | ResolverSemaphore := semaphore. "result is nil if network initialization failed, self if it succeeds" (self primInitializeNetwork: index) ifNil: [ Smalltalk unregisterExternalObject: ResolverSemaphore. ResolverSemaphore := nil. NoNetworkError signal: 'failed network initialization'] ifNotNil: [ HaveNetwork := true ] ]. self initializeOldNetworkFlag!

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