May 2012 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] [review needed] Do we remove SmartRefStream?
by Fernando Olivero May 11, 2012

May 11, 2012

I would remove them, you made a strong point in favor of simply removing it: A cleanup of an unneeded class. Its nice to see this kind of complex classes disappear from Pharo, more and more. Fernando On Fri, May 11, 2012 at 10:27 AM, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > With Fuel, we should take the opportunity to clean up the systm. There are things we need to keep > for a while (DataStream, for example, a it is used by Monticello). > > But what about SmartRefStream? With ImageSegment already gone, does it make sense to keep > it? The code looks horrible. > > One can just remove it and all remaining users like this: > > http://code.google.com/p/pharo/issues/detail?id=5859 > > Can we do that? do we need to formally deprecate it? > > -- > Marcus Denker -- http://marcusdenker.de > >

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[Pharo-project] PHARO_VM on Jenkins
by Pavel Krivanek May 11, 2012

May 11, 2012

Hi, I got this error on Pharo Kernel 2.0 Jenkins build: PHARO_VM environment variable is not set. Did somebody some VM related changes on Jenkins? -- Pavel

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[Pharo-project] Form sliding causing VM segfault (Form>>slideFrom:to:nSteps:delay:)
by Igor Stasenko May 11, 2012

May 11, 2012

remember the recent issue with form sliding? It strikes again.. i dragged my window outside of OS window bounds and then released the button.. i'm not sure if this a VM issue or image/side.. but i think VM has to be blamed, because it should do range checking before accepting requests for doing stupid operations, like blitting outside the buffer :) Luckily i were running debug version of VM and under debugger doing things completely unrelated to this :) Here some info about crash point: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x0000000a 0x00034949 in longAtPointer (ptr=0xa <Address 0xa out of bounds>) at sqMemoryAccess.h:81 81 static inline sqInt longAtPointer(char *ptr) { return *(sqInt *)ptr; } (gdb) bt #0 0x00034949 in longAtPointer (ptr=0xa <Address 0xa out of bounds>) at sqMemoryAccess.h:81 #1 0x00034969 in longAt (oop=10) at sqMemoryAccess.h:98 #2 0x0003a1c0 in ceSendsupertonumArgs (selector=525641856, superNormalBar=0, rcvr=10, numArgs=0) at /Users/sig/projects/cog/sig-cog/src/vm/gcc3x-cointerp.c:10729 #3 0x1f40005c in ?? () #4 0x00049045 in initStackPagesAndInterpret () at /Users/sig/projects/cog/sig-cog/src/vm/gcc3x-cointerp.c:17865 #5 0x00026ad1 in interpret () at /Users/sig/projects/cog/sig-cog/src/vm/gcc3x-cointerp.c:1979 (gdb) call printCallStack() 0xbff5dc80 M [] in Form(DisplayObject)>slideFrom:to:nSteps:delay: 578564724: a(n) Form 0xbff5dcc4 I Form(DisplayObject)>follow:while:bitsBehind:startingLoc: 578564724: a(n) Form 0xbff5dcfc I Form(DisplayObject)>follow:while: 578564724: a(n) Form 0xbff5dd2c I Form(DisplayObject)>slideFrom:to:nSteps:delay: 578564724: a(n) Form 0xbff5dd78 I NautilusWindow(Morph)>slideBackToFormerSituation: 565212772: a(n) NautilusWindow 0xbff5dd9c I NautilusWindow(Morph)>rejectDropMorphEvent: 565212772: a(n) NautilusWindow 0xbff5ddc8 I HandMorph>dropMorph:event: 535318276: a(n) HandMorph 0xbff5ddf4 I [] in HandMorph>dropMorphs: 535318276: a(n) HandMorph 0xbff5de14 M Array(SequenceableCollection)>reverseDo: 578544144: a(n) Array 0xbff5de38 I HandMorph(Morph)>submorphsReverseDo: 535318276: a(n) HandMorph 0xbff5de5c I HandMorph>dropMorphs: 535318276: a(n) HandMorph 0xbff5de80 M HandMorph>handleEvent: 535318276: a(n) HandMorph 0xbff5deac M HandMorph>processEvents 535318276: a(n) HandMorph 0xbff5dec4 M [] in WorldState>doOneCycleNowFor: 526955120: a(n) WorldState 0xbff5dee8 M Array(SequenceableCollection)>do: 525348844: a(n) Array 0xbff5df04 M WorldState>handsDo: 526955120: a(n) WorldState 0xbff5df20 M WorldState>doOneCycleNowFor: 526955120: a(n) WorldState 0xbff5df3c M WorldState>doOneCycleFor: 526955120: a(n) WorldState 0xbff5df58 M PasteUpMorph>doOneCycle 526861788: a(n) PasteUpMorph 0xbff5df70 M [] in MorphicUIManager>spawnNewProcess 526984156: a(n) MorphicUIManager i think best solution right now is to avoid using sliding (NautilusWindow(Morph)>slideBackToFormerSituation:). for a longer term, a best solution is to fix this issue, of course :) -- Best regards, Igor Stasenko.

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[Pharo-project] [OT] ffs!
by Igor Stasenko May 11, 2012

May 11, 2012

i found this funny.. most of you probably know, what ffs means.. if not, see here: http://www.urbandictionary.com/define.php?term=FFS but standard C library says otherwise: FFS(3) BSD Library Functions Manual FFS(3) NAME ffs, ffsl, fls, flsl -- find first or last bit set in a bit string ... ffs! why using such obscure naming?!?! and this is one of the examples, why i prefer smalltalk over C. -- Best regards, Igor Stasenko.

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[Pharo-project] Native Boost and Slang
by Igor Stasenko May 10, 2012

May 10, 2012

oops. i didn't meant to turn it into private conversation.. there are some bits which can be useful/interesting to others :) ---------- Forwarded message ---------- From: Igor Stasenko <siguctua(a)gmail.com> Date: 10 May 2012 23:07 Subject: Re: [Pharo-project] Native Boost and Slang To: lenglish5(a)cox.net On 10 May 2012 22:07, Lawson English <lenglish5(a)cox.net> wrote: > > On 5/10/12 12:00 PM, Igor Stasenko wrote: >> >> woot .. 68 videos.. >> you are really productive! :) >> > Thanks. > > BTW, I was wondering if there would be an easy way to return the formatted > string from a printf() call. > > printing: Â NBCPrinter printf: 'aString' > > returns nil > because printf() function returns void. (nothing) which replaced by NB by nil (since unlike from C, every method has to answer something) for returning formatted string you can use snprintf() function. Â Â int Â Â snprintf(char * restrict str, size_t size, const char * restrict format, ...); here in first argument you should pass a ByteArray instance, or ByteString, big enough to accomodate formatted string, size is maximum number of characters for that buffer (pass the size of bytearray/string) the rest is like in printf. But NB does not supports variable arguments. > > Also, I'm looking at providing bindings to a few of the functions in gmplib > Â http://gmplib.org/ > > and the examples http://web.mit.edu/gnu/doc/html/gmp_4.html show that I > should always call mpz_clear (&result) unless I am "exiting the program". I > assume this means I should always call mpz_clear (&result) but of course, if > I do that, I don't have a valid return value. > you clear it , when you no longer need it. in terms of smalltalk, you must finalize the object which represents external resource to call mpz_clear there. See WeakRegistry & friends. You can also use NBExternalResourceManager, which i added recently. See its comment for instructions how to use it. > Can I embed several external calls within a single {} or should I make each > gmp call a "private" method and wrap the calls in a public method or...? > It is easy to write a code in NB which makes multiple calls to different functions inside same primitive. But of course you will need to make your hands dirty with some assembly. The high level interface allows you to make callouts only to a single function. > > Thanks > > Lawson -- Best regards, Igor Stasenko. -- Best regards, Igor Stasenko.

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[Pharo-project] Zinc: HEAD and then GET
by Sean P. DeNigris May 10, 2012

May 10, 2012

Why does one of the following work, and the other not? fileUrl := 'https://ci.lille.inria.fr/pharo/view/Pharo%201.4/job/Pharo%201.4/lastSucces…' asUrl. "This succeeds in downloading the file" c := ZnClient new. c head: fileUrl; yourself. c url: fileUrl; downloadTo: targetPath; yourself. "This fails with a HTTP 400" c := ZnClient new. c url: fileUrl. c head; yourself. c resetRequestIfNeeded; "fails with or without this line" downloadTo: targetPath; yourself. -- View this message in context: http://forum.world.st/Zinc-HEAD-and-then-GET-tp4623719.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Native Boost and Slang
by Lawson English May 10, 2012

May 10, 2012

are there any examples of how to use Slang with native boost? Also, what is the latest stable version that I should be using for my videos? Thanks. Lawson Squeak from the very start (introduction to Squeak and Pharo Smalltalk for the (almost) complete and compleate beginner. https://www.youtube.com/playlist?list=PL6601A198DF14788D&feature=view_all

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[Pharo-project] Problem installing Native Boost
by Lawson English May 10, 2012

May 10, 2012

I obtained the NativeBoost VM for Mac OS X from: http://code.google.com/p/nativeboost/downloads/list and followed the instructions at: http://code.google.com/p/nativeboost/wiki/Installation However, when I evaluate: NBInstaller install. I get MNU: receiver of "project" is nil I'm pretty sure I can figure out a workaround for now, but I'd rather not do an install NB tutorial and just do a how-to-use video instead. Thanks. Lawson Squeak from the very start (introduction to Squeak and Pharo Smalltalk for the (almost) complete and compleate beginner). https://www.youtube.com/playlist?list=PL6601A198DF14788D&feature=view_all

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[Pharo-project] RE : Re: [Vm-dev] Re: StackVM on iOS: the return
by Philippe Back May 10, 2012

May 10, 2012

an idea why I do get that message and nothing else? all temp stuff has been deleted. EnvoyÃ© depuis un mobile Samsung Esteban Lorenzano <estebanlm(a)gmail.com> a Ã©crit : Perfect! I added them to CMakeMaker and now is generating without need of hand work. Thanks! Esteban On May 10, 2012, at 10:09 AM, phil(a)highoctane.be wrote: I have been able to get it build. Set ConfigurationBuilDir to $(BUILD_DIR)/$(CONFIGURATION) and the next entry (temp) to $(PROJECT_TEMP_DIR)/$(CONFIGURATION) This will make it build. But then, this is what I get with the code base in the Xcode debug log when running on the iPad: 2012-05-10 10:01:39.695 iStackVM[1954:707] Application windows are expected to have a root view controller at the end of application launch errno 12 startOfmmapForANONMemory failed: Cannot allocate memory At this point, either we can look at this at PharoConf or this path is definitely dead in the water for me. I'll switch back to regular Xcode Objective-C and other platforms as this is not looking like a very viable target despite the potential benefits. Enough time lost. That's too bad since iPad is the fastest growing consumer level device taking over the world and it is not getting enough love. CMake reminders me of Maven2: an excellent tool, provided you invest 3 months straight in getting all the warts out. A single basic Xcode project would suffice and be easier to maintain. Phil 2012/5/10 Mariano Martinez Peck <marianopeck(a)gmail.com> > > > On Thu, May 10, 2012 at 9:51 AM, Esteban Lorenzano <estebanlm(a)gmail.com>wrote: > >> >> Hi, >> >> yes... cmake is still not making a good job on creating xcode projects. >> For now, I touch that manually after generation, I still didn't find the >> time to correct it... if you find a way, please let me know. >> >> > Indeed. I had the same problem but no working solution. See: > http://forum.world.st/Problem-with-external-plugins-with-automated-XCode-pr… > > > >> btw... I think this vm related stuff belongs to vm-dev list, I'm >> redirecting there. >> >> best, >> Esteban >> >> On May 10, 2012, at 9:46 AM, phil(a)highoctane.be wrote: >> >> > Hello >> > >> > I've been updating the blessed/ thing from git (pull, merge master), >> taken a fresh image, loaded the 4.7 and generated sources. >> > >> > Cmake and fix works. >> > >> > Project opens in XCode 4.3 >> > >> > But... >> > >> > The linking step fails because the .a files for the plugins aren't >> found. >> > >> > I can't figure out why since all this Cmake machinery makes a ton of >> scripts all over the place. >> > >> > Any clue to get me out of that? >> > >> > Thanks! >> > >> > Philippe Back >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > > -- Philippe Back "Helping you hit the top 3 outcomes you really want to achieve" Mob: +32(0) 478 650 140 | Fax: +32 (0) 70 408 027 Mail: phil(a)highoctane.be| Web: http://philippeback.eu | Blog: http://philippeback.be High Octane SPRL rue cour Boisacq 101 1301 Bierges

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[Pharo-project] StackVM on iOS: the return
by phil＠highoctane.be May 10, 2012

May 10, 2012

Hello I've been updating the blessed/ thing from git (pull, merge master), taken a fresh image, loaded the 4.7 and generated sources. Cmake and fix works. Project opens in XCode 4.3 But... The linking step fails because the .a files for the plugins aren't found. I can't figure out why since all this Cmake machinery makes a ton of scripts all over the place. Any clue to get me out of that? Thanks! Philippe Back

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