- Pharo-dev - lists.pharo.org

Re: [Pharo-project] Status of Alien FFI
by Ken Treis Sept. 23, 2009

Sept. 23, 2009

Eliot, Johan, Fernando, et. al.: On Sep 16, 2009, at 3:09 PM, Eliot Miranda wrote: > Hi Ken, > > On Wed, Sep 16, 2009 at 12:17 PM, Ken Treis <ken(a)miriamtech.com> > wrote: > Perhaps there would need to be new primitives for the basic size of > each relevant C type? I'm anxious to hear what Eliot might have to > say about this since he's got about 2000x more experience with this > than I do. > > are you using the 64-bit VM? If you're using a 32-bit VM on a 64- > bit platform then yu're using 32-bits and you'll be linking against > 32-bit libraries and hence nothing will have changed. At present I'm on a 32-bit VM, but I'm trying to build a package that'll work both on Squeak/Pharo and on GemStone/S 64. > > Alien has support for 64-bit values. Of course it uses the Windows > choice, short = 2, int unused as a name, long = 4, longLong = 8. e.g. > anAlien unsignedByteAt: oneRelativeIndex > anAlien unsignedShortAt: oneRelativeIndex > anAlien unsignedLongAt: oneRelativeIndex > anAlien unsignedLongLongAt: oneRelativeIndex > are the basic primitives for fetching unsigned integers. > > But this needs to be wrapped with something that selects the right > sizes based on the current platform and that's yet to be addressed. OK, I took a first stab at this. In Alien-Core-KenTreis.57, I added the a class variable that holds a dictionary of platform sizes, along with accessors on Alien class for sizeof(type)[1]. I am imagining that this dictionary could be populated with a primitive, but for now it has to be set by hand. Probably high time I learned how to build Squeak primitives, but deadlines are calling... I also added Alien>>signedIntAt:/put: and unsignedIntAt:/put:. Right now these assume you're on an IA32 architecture (heck, that's the name of the plugin). But at least they hide that detail from the CairoGraphics package, which can simply use `Alien sizeofInt` in offset calculations and `Alien sizeofPointer` when data structures don't align nicely on 8-byte boundaries. Other changes in this version: * Class-side convenience callout helpers on AlienLibrary (e.g. int:with:, void:withArguments:, etc). These defer their actual behavior to primitives on the singleton instance, but provide for (IMHO) cleaner invocation from other objects. * Flush the list of loaded libraries at image startup, like the original Alien package did, instead of doing it at image shutdown as later versions do. This lets you save the image without dropping all of your libraries and invalidating external references. * A couple of accessors on AlienWeakTable that let you find a registered object by tag (analogous to Dictionary>>keyAtValue:), remove by tag, and return a strong reference to everything that the table currently holds weakly. The Cairo package uses these when handles are explicitly released and when flushing handles at image startup. I'm lobbying for inclusion of all of these in the trunk, but I'll be glad to defer to the better judgement of the package maintainers if my code is determined to be wrong/misguided. At this point this all works for me, and works well enough that I can load CairoGraphics and my "alien lite" in GemStone, and the various pointers, data offsets, etc. are right for Linux/x86_64. [1] I know there were some accessors for a few types already, but it seemed odd to have implementors for both signedLongSize and unsignedLongSize since the size doesn't depend on the sign-edness. I liked the C-like use of sizeofLong, sizeofPointer, etc but am willing to defer to somebody else's judgement on these method names. -- Ken Treis Miriam Technologies, Inc.

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[Pharo-project] errata for pharo by example
by Chris Kassopulo Sept. 23, 2009

Sept. 23, 2009

pg 8 BouncingAtomsMorph new openInWorld Unknown variable: BouncingAtomsMorph

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[Pharo-project] Proposal for usable Smalltalk IDE
by empty Sept. 23, 2009

Sept. 23, 2009

Hi, I'm a ten year Smalltalker, in spare time. I found most IDE are not usable at all. To enable usable an IDE I suggest separating info input service and edit service and mouse selection services. In short, each inputting area on any browser/inspector/explorer/etc should have a visible reference Letter and a floating inputting window for inputting service. On that window you type cd target-area-ref-letter return then the floating input window move to the target area waiting for user input and auto-complete/in-line edit things will be supported by inputting service here in the input window. When user return, the text is send to the target. Mousing/key board selecting/editing etc. will be handled by the current topic area and one get the input window back to work on. This could be think of as a modernized xterm in Smalltalk. (sorry I'm not a native English speaker) ----- åç¡ä½ åç¡æ³ åç¡å§ -- View this message in context: http://n2.nabble.com/Proposal-for-usable-Smalltalk-IDE-tp3696754p3696754.ht… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Mutation Testing
by John M McIntosh Sept. 22, 2009

Sept. 22, 2009

Although I didn't get to see the presentation on Mutation Testing at ESUG, I did have a chance to see it the following week after my XtC talk in London. At the time I had promised to try it out. http://www.slideshare.net/esug/mutation-testing My Fractions Calculator has 105 Sunits to confirm the keyboard state machine works, the calculator grammar via Smacc is sane, and the math results are as defined by either Wolfram Alpha, or Microsoft Excel rules. Actually the number of tests are 210 because they are subclassed for Excel, but running just the Wolfram Alpha based ones were sufficient to test the code base. I had two problems, one where the RBParser choked on #(#foo:. #bar:.) Oops the code really should have been #(#foo: #bar:) or {#foo:. #bar:.}, still it shouldn't have given a walkback. The second was that I had to increase the memory ceiling of the macintosh squeak carbon VM from 512MB to 1.5GB via the info.plist so that a recursive error situation would not make the VM run out of memory before the Mutation testing runtime monitor would kill the runaway task. As a result over the 105 SUnits it reported: It made 874 mutants, 873 got killed, 1 was terminated. Which means I don't have any head scratching this afternoon. -- = = = ======================================================================== John M. McIntosh <johnmci(a)smalltalkconsulting.com> Twitter: squeaker68882 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com = = = ========================================================================

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[Pharo-project] Less Complex Development Image
by Ken Dickey Sept. 22, 2009

Sept. 22, 2009

Greetings, I was disappointed to download the latest development image and find the old Complex cruft hanging around. Is there a compelling application that this enables? I would really prefer that the Complex class be removed from the 1.0 candidate. Thanks for listening, -KenD

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[Pharo-project] Pharo by example: version naming
by Schwab,Wilhelm K Sept. 22, 2009

Sept. 22, 2009

It's nice to see the book available! Thanks, and congratulations!! Please look at section 3.7; this is probably a problem throughout the book though. The last sentence in 3.7 states "Since Pharo 3.9, ..." which really is referring to Squeak. It should be cleaned up in some way out of respect for the good in Squeak and since there will probably (eventually) be a Pharo 3.9. Bill

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[Pharo-project] Pharo by example: figure 1.1 replacement
by astares＠gmx.de Sept. 22, 2009

Sept. 22, 2009

Mariano wrote: >Did you see this ... Yes - I originally requested Samuel's logo designs from Stephane to build windows icons for the win32 installer as well as the pharo powered logo and after that we've put them online. The document icons I've sent today were adaptions of [1] and [2] Bye T. [1] http://wiki.squeak.org/squeak/uploads/2170/SqueakMacGold-bf.1.png [2] http://wiki.squeak.org/squeak/2170 -- GRATIS fÃ¼r alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01

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[Pharo-project] Pharo by example: figure 1.1 replacement
by astares＠gmx.de Sept. 22, 2009

Sept. 22, 2009

Please exchange the figure 1.1 in the PBE Book and replace it with the attached image. The old image included the squeak logo and *.app is for Mac only (windows has EXE and the linux uses a *.sh script), also versions easily change so I use neutral names here. Also attached the document icons as ZIP for general use Bye T. -- Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3 - sicherer, schneller und einfacher! http://portal.gmx.net/de/go/atbrowser

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[Pharo-project] How to use the OmniBrowser regex refactor to transform code?
by T.J. Richter Sept. 22, 2009

Sept. 22, 2009

I feel stupid for asking this, but I Googled and found nothing, checked classes for comments and found nothing, then skimmed Pharo by Example and also found nothing. Lukas mentioned helpfully in another thread that you can use the regex refactoring tools in the OmniBrowser to transform code, but I can't seem to figure out how to do it. I figured out how to "scope" the refactoring to a class or class hierarchy, which results in a gold window popping up with the selected class(es) in the left-most panel. When I right-click on the class at the top and choose "refactor->source regex", I get a template in the code panel that looks like this: ORSourceRegexRefactoring new "Example 1: Replace symbols with strings" replace: '#(\w+)' with: '''$1''' ignoreCase: false; "Example 2: Replace 4 spaces with tabs" replace: ' ' with: ' ' ignoreCase: false; yourself I wanted to rename a method (and all senders of it in the selected scope) from "nextValue" to "nextItem", so I edit the template to this: ORSourceRegexRefactoring new replace: 'nextValue' with: 'nextItem' ignoreCase: false; yourself I highlight it all with Alt-a, then Do It with Alt-d, but nothing seems to happen.

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[Pharo-project] Fwd: [squeak-dev] About Collections-ul.137..140
by Damien Cassou Sept. 21, 2009

Sept. 21, 2009

---------- Forwarded message ---------- From: Levente Uzonyi <leves(a)elte.hu> Date: Sun, Sep 20, 2009 at 4:38 PM Subject: [squeak-dev] About Collections-ul.137..140 To: squeak-dev(a)lists.squeakfoundation.org Hi! Just uploaded four packages to inbox: Collections-ul.137, Collections-ul.138, Collections-ul.139 and Collections-ul.140. These packages reimplement #rehash and #grow in Set and its subclasses (except MethodDictionary). The ideas come are from Ralph Boland's FasterSets project, but the implementation is different. According to my measurements they are even faster. The four packages should be loaded in the given order one-by-one otherwise mc might remove old methods before adding new ones, etc (couldn't come up with a better mc based load mechanism). While I was rewriting these methods, I found that KeyedSet and KeyedIdentitySet are not used (no references, no senders) in the trunk. Also checked that in a 3.8.1 full image they have no references (just senders in DecompilerTests >> #decompilerDiscrepancies). I think they might be removed from the base image and moved to a separate package. Cheers, Levente -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry

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