November 2014 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] Spur 64-bits. Ugh, this could be a slog...
by Eliot Miranda Nov. 19, 2014

Nov. 19, 2014

Hi Ryan, On Tue, Nov 18, 2014 at 7:59 PM, Ryan Macnak <rmacnak(a)gmail.com> wrote: > What about bytecode pc's? These are indexed based on the physical size of > the literals. I don't like the idea of debugging pc -> source mappings, pc > coverage data, etc needing invalidation after starting an image on a > platform with a different word size. > I think this is taken care of. For example, CompiledMethod>>initialPC already consults wordSize. CompiledMethod>>initialPC "Answer the program counter for the receiver's first bytecode." ^ (self numLiterals + 1) * Smalltalk wordSize + 1 and of course the image bootstrap maps pcs already. i.e. Spur32to64BitBootstrap>>fillInPointerObjectWithPC: obj64 from: obj32 | method | self fillInPointerObject: obj64 from: obj32. (heap64 classIndexOf: obj64) = ClassBlockClosureCompactIndex ifTrue: [method := heap32 fetchPointer: MethodIndex ofObject: (heap32 fetchPointer: ClosureOuterContextIndex ofObject: obj32). self incrementPCField: ClosureStartPCIndex ofObject: obj64 for: method]. (heap64 classIndexOf: obj64) = ClassMethodContextCompactIndex ifTrue: [method := heap32 fetchPointer: MethodIndex ofObject: obj32. self incrementPCField: InstructionPointerIndex ofObject: obj64 for: method] Spur32to64BitBootstrap>>incrementPCField: fieldIndex ofObject: obj64 for: method32 | value nLits | value := heap64 fetchPointer: fieldIndex ofObject: obj64. (heap64 isIntegerObject: value) ifTrue: [nLits := heap32 literalCountOf: method32. heap64 storePointerUnchecked: fieldIndex ofObject: obj64 withValue: (heap64 integerObjectOf: nLits + LiteralStart * 4 + (heap64 integerValueOf: value))] ifFalse: [self assert: (reverseMap at: value) = heap32 nilObject] So I'm more looking for issues where the code implicitly assumes 32-bit pointers, such as digitAt: below. On Tue, Nov 18, 2014 at 7:12 PM, Eliot Miranda <eliot.miranda(a)gmail.com> > wrote: > >> Hi All, >> >> I'm making good progress on 64-bit Spur in the Stack VM simulator. >> But I've just noticed an image-level issue which could be indicative of >> lots of 32-bit assumptions baked into the Squeal/Pharo/Newspeak systems. >> >> SmallInteger>>digitAt: n >> "Answer the value of an indexable field in the receiver. >> LargePositiveInteger uses bytes of base two number, and each is a 'digit' >> base 256. Fail if the argument (the index) is not an Integer or is out of >> bounds." >> n>4 ifTrue: [^ 0]. >> self < 0 >> ifTrue: >> [self = SmallInteger minVal ifTrue: >> ["Can't negate minVal -- treat specially" >> ^ #(0 0 0 64) at: n]. >> ^ ((0-self) bitShift: (1-n)*8) bitAnd: 16rFF] >> ifFalse: [^ (self bitShift: (1-n)*8) bitAnd: 16rFF] >> >> This assumes that SmallInteger is only ever 4 bytes, which is >> unacceptably wasteful for my approach to 64-bits. In 64-bit Spur, >> SmallIntegers are 61-bit 2's complement. >> >> I'm raising this example at this point to see if the community might find >> similar issues and bring them to my attention. >> -- >> best, >> Eliot >> > > -- best, Eliot

1 0

[pharo-project/pharo-core]
by GitHub Nov. 19, 2014

Nov. 19, 2014

Branch: refs/tags/40376 Home: https://github.com/pharo-project/pharo-core

1 0

[pharo-project/pharo-core] 77e0fc: 40376
by GitHub Nov. 19, 2014

Nov. 19, 2014

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: 77e0fc96bef6c42cc90d312f05f56a4f382af05a https://github.com/pharo-project/pharo-core/commit/77e0fc96bef6c42cc90d312f… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2014-11-19 (Wed, 19 Nov 2014) Changed paths: A Graphics-Canvas.package/AlphaBlendingCanvas.class/README.md A Graphics-Canvas.package/AlphaBlendingCanvas.class/definition.st A Graphics-Canvas.package/AlphaBlendingCanvas.class/instance/accessing/alpha.st A Graphics-Canvas.package/AlphaBlendingCanvas.class/instance/accessing/alpha_.st A Graphics-Canvas.package/AlphaBlendingCanvas.class/instance/drawing-images/image_at_sourceRect_rule_.st A Graphics-Canvas.package/AlphaBlendingCanvas.class/instance/initialization/on_.st A Graphics-Canvas.package/AlphaBlendingCanvas.class/instance/private/mapColor_.st A Graphics-Canvas.package/Canvas.class/README.md A Graphics-Canvas.package/Canvas.class/definition.st A 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Morphic-Core.package/FormCanvas.class/instance/drawing/paragraph_bounds_color_.st R Morphic-Core.package/FormCanvas.class/instance/drawing/render_.st R Morphic-Core.package/FormCanvas.class/instance/initialization/finish.st R Morphic-Core.package/FormCanvas.class/instance/initialization/initializeTranslucentPatterns.st R Morphic-Core.package/FormCanvas.class/instance/initialization/reset.st R Morphic-Core.package/FormCanvas.class/instance/other/flushDisplay.st R Morphic-Core.package/FormCanvas.class/instance/other/forceToScreen_.st R Morphic-Core.package/FormCanvas.class/instance/other/showAt_.st R Morphic-Core.package/FormCanvas.class/instance/other/showAt_invalidRects_.st R Morphic-Core.package/FormCanvas.class/instance/other/warpFrom_toRect_.st R Morphic-Core.package/FormCanvas.class/instance/printing/printOn_.st R Morphic-Core.package/FormCanvas.class/instance/private/image_at_sourceRect_rule_.st R Morphic-Core.package/FormCanvas.class/instance/private/image_at_sourceRect_rule_alpha_.st R Morphic-Core.package/FormCanvas.class/instance/private/privateClipRect.st R Morphic-Core.package/FormCanvas.class/instance/private/privatePort.st R Morphic-Core.package/FormCanvas.class/instance/private/privateWarp_transform_at_sourceRect_cellSize_.st R Morphic-Core.package/FormCanvas.class/instance/private/resetGrafPort.st R Morphic-Core.package/FormCanvas.class/instance/private/setClearColor_.st R Morphic-Core.package/FormCanvas.class/instance/private/setFillColor_.st R Morphic-Core.package/FormCanvas.class/instance/private/setForm_.st R Morphic-Core.package/FormCanvas.class/instance/private/setOrigin_clipRect_.st R Morphic-Core.package/FormCanvas.class/instance/private/setPaintColor_.st R Morphic-Core.package/FormCanvas.class/instance/private/translucentMaskFor_depth_.st R Morphic-Core.package/FormCanvas.class/instance/private/translucentPatterns.st R Morphic-Core.package/FormCanvas.class/instance/testing/isVisible_.st R Morphic-Core.package/ShadowDrawingCanvas.class/README.md R Morphic-Core.package/ShadowDrawingCanvas.class/definition.st R Morphic-Core.package/ShadowDrawingCanvas.class/instance/accessing/shadowColor.st R Morphic-Core.package/ShadowDrawingCanvas.class/instance/accessing/shadowColor_.st R Morphic-Core.package/ShadowDrawingCanvas.class/instance/initialization/on_.st R Morphic-Core.package/ShadowDrawingCanvas.class/instance/private/image_at_sourceRect_rule_.st R Morphic-Core.package/ShadowDrawingCanvas.class/instance/private/mapColor_.st R Morphic-Core.package/ShadowDrawingCanvas.class/instance/testing/isShadowDrawing.st M Polymorph-Widgets.package/UITheme.class/instance/basic-colors/patchworkUIThemeColorFor_.st M Polymorph-Widgets.package/UITheme.class/instance/basic-colors/windowColorFor_.st A Polymorph-Widgets.package/extension/SmalltalkImage/instance/ui.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script376.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40376.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st R System-Support.package/Model.class/class/themes/patchworkUIThemeColor.st R System-Support.package/SmalltalkImage.class/instance/accessing/ui.st M Tool-Browser-Old.package/CodeHolder.class/instance/construction/optionalButtonRow.st Log Message: ----------- 40376 13516 Canvas and all subclasses should not be in Morphic https://pharo.fogbugz.com/f/cases/13516 14489 Clean references from System Support to Themes https://pharo.fogbugz.com/f/cases/14489 http://files.pharo.org/image/40/40376.zip

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[pharo-project/pharo-core] f975b8: 40375
by GitHub Nov. 19, 2014

Nov. 19, 2014

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: f975b8237543dfff34d8eaec787c1a9494e07bc2 https://github.com/pharo-project/pharo-core/commit/f975b8237543dfff34d8eaec… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2014-11-19 (Wed, 19 Nov 2014) Changed paths: A NewValueHolder.package/extension/OrderedDictionary/instance/asValueHolder.st M OpalCompiler-Core.package/OpalCompiler.class/instance/public access/decompileMethod_.st A OpalCompiler-Core.package/extension/RBMethodNode/class/errorMethodNode_errorMessage_.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script375.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40375.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 40375 14496 Emergency tool instead of the debugger starting (caused by issue #14469 in update #40373) https://pharo.fogbugz.com/f/cases/14496 14492 OpalCompiler depends on OpalDecompiler https://pharo.fogbugz.com/f/cases/14492 http://files.pharo.org/image/40/40375.zip

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[pharo-project/pharo-core]
by GitHub Nov. 19, 2014

Nov. 19, 2014

Branch: refs/tags/40375 Home: https://github.com/pharo-project/pharo-core

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Can we make this fast ?
by phil＠highoctane.be Nov. 19, 2014

Nov. 19, 2014

See https://news.ycombinator.com/item?id=8625280 [ (1 to: 100000000) sum ] timeToRun Here we get out of the SmallInteger range... Apart FFI'ing the thing, do we have other options? Phil

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Pharo contributions server gone
by Torsten Bergmann Nov. 19, 2014

Nov. 19, 2014

https://ci.inria.fr/pharo-contribution Restart?

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Emergency tool instead of the debugger starting (caused by issue #14469 in update #40373)
by Torsten Bergmann Nov. 19, 2014

Nov. 19, 2014

The expression 1 halt or any other part that has to be debugged gives the emergency tool instead of the debugger. Pharo 4.0 #40372 image is working (gives the usual debugger) Pharo 4.0 #40373 image not working (emergency evaluator) The problem seems to be related to the fix/slice "SLICE-Issue-14469-Merge-back-OrderPreservingDictionary-improvements-MarcusDenker.1" for issue 14469. When one manually merges the slice from issue #14469 into Pharo 4.0 #40372 one can reproduce this problem. https://pharo.fogbugz.com/f/cases/14496

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Re: [Pharo-dev] [Vm-dev] Re: Spur 64-bits. Ugh, this could be a slog...
by David T. Lewis Nov. 19, 2014

Nov. 19, 2014

On Tue, Nov 18, 2014 at 07:59:30PM -0800, Ryan Macnak wrote: > > What about bytecode pc's? These are indexed based on the physical size of > the literals. I don't like the idea of debugging pc -> source mappings, pc > coverage data, etc needing invalidation after starting an image on a > platform with a different word size. I may be misunderstanding your question, but I do not think that this will be an issue. All byte addressible objects need to work properly in any image, including 32 and 64 bit images. If that part does not work, then the image will not run, so no problem ;-) With respect to platform word size (e.g. 64 bit OS versus 32 bit OS), the images should all run bit-identically regardless of platform word size. A 64-bit image can (and does) run on a 32-bit host platform, given a suitably compiled VM. And a 32-bit image will run on a 64-bit host platform, given a suitably compiled VM (or more commonly, a 32-bit VM with 32-bit compatibility libraries installed on the platform). Dave > > On Tue, Nov 18, 2014 at 7:12 PM, Eliot Miranda <eliot.miranda(a)gmail.com> > wrote: > > > Hi All, > > > > I'm making good progress on 64-bit Spur in the Stack VM simulator. > > But I've just noticed an image-level issue which could be indicative of > > lots of 32-bit assumptions baked into the Squeal/Pharo/Newspeak systems. > > > > SmallInteger>>digitAt: n > > "Answer the value of an indexable field in the receiver. > > LargePositiveInteger uses bytes of base two number, and each is a 'digit' > > base 256. Fail if the argument (the index) is not an Integer or is out of > > bounds." > > n>4 ifTrue: [^ 0]. > > self < 0 > > ifTrue: > > [self = SmallInteger minVal ifTrue: > > ["Can't negate minVal -- treat specially" > > ^ #(0 0 0 64) at: n]. > > ^ ((0-self) bitShift: (1-n)*8) bitAnd: 16rFF] > > ifFalse: [^ (self bitShift: (1-n)*8) bitAnd: 16rFF] > > > > This assumes that SmallInteger is only ever 4 bytes, which is unacceptably > > wasteful for my approach to 64-bits. In 64-bit Spur, SmallIntegers are > > 61-bit 2's complement. > > > > I'm raising this example at this point to see if the community might find > > similar issues and bring them to my attention. > > -- > > best, > > Eliot > >

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Merge conflict for "META Case: restructure Tests and test packages"
by Nicolai Hess Nov. 18, 2014

Nov. 18, 2014

for example : https://pharo.fogbugz.com/default.asp?14433 I don't why there is a merge conflict, maybe it is how the slice is created. I think the restructuring (moving all classes from XXXTest to XXX-Tests) would work if we delete the empty XXXTests package before creating the slice. nicolai

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