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Re: [Pharo-dev] [Vm-dev] Re: Spur 64-bits. Ugh, this could be a slog...

by Eliot Miranda

On Tue, Nov 18, 2014 at 10:03 PM, Ryan Macnak <rmacnak(a)gmail.com> wrote: > Ah, that's true if images have a fixed word size. I had imagined that the > VM would convert an image to the host word size at startup, just as Cog > converts Floats to the host representation. The Float change is transparent > to Smalltalk, but a word size change would be visible through the > identities of objects that are either immediate or heap depending on the > word size. And for mixed format objects like CompiledMethods, the offset > for basicAt: for the beginning of the byte data would change. > Right. And for this reason I find it better to make the change a one-off bootstrap, even if it rewrites a 32-nit image to a 64-bit image, rather thna builds a fresh system from startup (an approach others are pursuing). It doesn't make sense burdening the VM with conversion code that is rarely used. The one-off conversion results in a more performant, reliable solution IMO, much like the V3 to Spur bootstrap itself. On Tue, Nov 18, 2014 at 9:07 PM, David T. Lewis <lewis(a)mail.msen.com> wrote: > > 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 > > > > > -- best, Eliot

Nov. 19, 2014

Re: [Pharo-dev] Spur 64-bits. Ugh, this could be a slog...

by Eliot Miranda

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

Nov. 19, 2014

[pharo-project/pharo-core]

by GitHub

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

Nov. 19, 2014

[pharo-project/pharo-core] 77e0fc: 40376

by GitHub

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/accessing/contentsOfArea_into_.st R Morphic-Core.package/FormCanvas.class/instance/accessing/depth.st R Morphic-Core.package/FormCanvas.class/instance/accessing/extent.st R Morphic-Core.package/FormCanvas.class/instance/accessing/form.st R Morphic-Core.package/FormCanvas.class/instance/accessing/origin.st R Morphic-Core.package/FormCanvas.class/instance/copying/copyClipRect_.st R Morphic-Core.package/FormCanvas.class/instance/copying/copyOffset_.st R Morphic-Core.package/FormCanvas.class/instance/copying/copyOffset_clipRect_.st R Morphic-Core.package/FormCanvas.class/instance/copying/copyOrigin_clipRect_.st R Morphic-Core.package/FormCanvas.class/instance/copying/postCopy.st R Morphic-Core.package/FormCanvas.class/instance/drawing-images/stencil_at_sourceRect_color_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-images/warpImage_transform_at_sourceRect_cellSize_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-ovals/balloonFillOval_fillStyle_borderWidth_borderColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-ovals/fillOval_color_borderWidth_borderColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-ovals/fillOval_fillStyle_borderWidth_borderColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-polygons/drawPolygon_color_borderWidth_borderColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-polygons/drawPolygon_fillStyle_borderWidth_borderColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-rectangles/fillRectangle_basicFillStyle_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-rectangles/frameAndFillRectangle_fillColor_borderWidth_borderColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-rectangles/frameAndFillRectangle_fillColor_borderWidth_topLeftColor_bottomRightColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-rectangles/infiniteFillRectangle_fillStyle_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-support/clipBy_during_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-support/transformBy_clippingTo_during_smoothing_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-support/translateBy_during_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-support/translateTo_clippingTo_during_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-text/drawString_from_to_at_font_color_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-text/drawString_from_to_in_font_color_.st R Morphic-Core.package/FormCanvas.class/instance/drawing-text/drawString_from_to_in_font_color_underline_underlineColor_strikethrough_strikethroughColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing/fillColor_.st R Morphic-Core.package/FormCanvas.class/instance/drawing/line_to_width_color_.st R 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

Nov. 19, 2014

RTPolygon does not work ?

by Pierre CHANSON

Hi, does anyone know how to use RTPolygon shape or is there a real problem inside ? For exemple you get an error when executing: -=-=-=-=-=-=-=-=-=-=-=-= v := RTView new. p := RTPolygon new vertices:{ 25 @ 00 . 10 @ 50 . 50 @ 20 }. v add: (p elementOn: 1). v open -=-=-=-=-=-=-=-=-=-=-=-= Apparently the instance variable "strokePaint" of TRShape class, would be Nil when used by TRPolygonShape... But this variable seemed to be initialized in color black earlier so... I don't know what's appenning. If someone have a Idea... Thank you, PIerre

Nov. 19, 2014

Re: [Pharo-dev] Source code formatting guidelines

by Nicolai Hess

2014-11-19 14:55 GMT+01:00 Marcus Denker <marcus.denker(a)inria.fr>: > > On 19 Nov 2014, at 14:47, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > how Pharo source code is formatted > > One could argue that this is equivalent to the default settings of Pharo > formatter. > > > Which is not goodâ¦ e.g. it always adds too many line breaksâ¦ > > Marcus > If we can agree on source code guidelines, we should change the default settings of the Pharo formatter accordingly.

Nov. 19, 2014

Re: [Pharo-dev] Source code formatting guidelines

by Marcus Denker

> On 19 Nov 2014, at 14:47, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > how Pharo source code is formatted > One could argue that this is equivalent to the default settings of Pharo formatter. Which is not goodâ¦ e.g. it always adds too many line breaksâ¦ Marcus

Nov. 19, 2014

Re: [Pharo-dev] Source code formatting guidelines

by Peter UhnÃ¡k

> > how Pharo source code is formatted One could argue that this is equivalent to the default settings of Pharo formatter.

Nov. 19, 2014

Re: [Pharo-dev] Source code formatting guidelines

by Christophe Demarey

Hi I find the formatting chapter of the 'Smalltalk best practices pattern, Kent Beck' really nice but I cannot find a free pdf. I just found http://sdmeta.gforge.inria.fr/FreeBooks/WithStyle/SmalltalkWithStyle.pdf. There is also a chapter about formatting. Should also be a good reading. Regards, Christophe. Le 19 nov. 2014 Ã 12:06, Jan Vrany a Ã©crit : > Hi guys, > > is there any document I can read on how Pharo source code > is/should be formatted? I mean things like > - tabs/spaces? How many spaces if spaces? > - encoding of the source string > - trailing newlines > - trailing spaces > - ... > > I don't care much about things like whether there should > be a space after ^, opening [ and so on (because there's > a little I can do about it :-) > > Best, Jan > >

Nov. 19, 2014

Source code formatting guidelines

by Jan Vrany

Hi guys, is there any document I can read on how Pharo source code is/should be formatted? I mean things like - tabs/spaces? How many spaces if spaces? - encoding of the source string - trailing newlines - trailing spaces - ... I don't care much about things like whether there should be a space after ^, opening [ and so on (because there's a little I can do about it :-) Best, Jan

Nov. 19, 2014