September 2013 - Pharo-dev - lists.pharo.org

Pharo Launcher link
by btc＠openinworld.com Sept. 26, 2013

Sept. 26, 2013

Just wondering if it would be suitable to link to the Pharo Launcher from http://www.pharo-project.org/pharo-download. cheers -ben

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[OT] What's Your Next Language on the Javascript Platform?
by Esteban Lorenzano Sept. 26, 2013

Sept. 26, 2013

not bad :) http://www.infoq.com/research/languages-on-javascript-platform

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For those with arm / back problems -> Code by Voice
by kilon Sept. 26, 2013

Sept. 26, 2013

Here is a very nice presentation for coding by voice using emacs. It should work for pharo too via shampoo ( https://github.com/dmatveev/shampoo-emacs <https://github.com/dmatveev/shampoo-emacs> ) Here is the presentation https://www.youtube.com/watch?v=8SkdfdXWYaI <https://www.youtube.com/watch?v=8SkdfdXWYaI> coding by voice starts at 9:00 for those in hurry to see what the big deal is. I must say I am really impressed by it. Did not expect it to be so flexible / fast / efficient. -- View this message in context: http://forum.world.st/For-those-with-arm-back-problems-Code-by-Voice-tp4710… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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A simple File browser ?
by Erwan Douaille Sept. 26, 2013

Sept. 26, 2013

Hi, I would like to know if something like, a file browser ui containing a select button, exist ? Something really simple, just for browse and select one file. In my case i need it for import new icons. Thanks :) -- Best regards, Douaille Erwan <douaille.erwan(a)gmail.com>

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[update 3.0] #30423
by Marcus Denker Sept. 26, 2013

Sept. 26, 2013

30423 ----- 11676 A user with no save right should not be asked https://pharo.fogbugz.com/f/cases/11676 11666 ClassOrganization>>ownCategories missing https://pharo.fogbugz.com/f/cases/11666 Diff information: http://smalltalkhub.com/mc/Pharo/Pharo30/main/Morphic-Base-MarcusDenker.119… http://smalltalkhub.com/mc/Pharo/Pharo30/main/ClassOrganizer-Core-MarcusDen…

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[update 2.0] #20621
by Marcus Denker Sept. 26, 2013

Sept. 26, 2013

20621 ----- 11678 ConfigurationCommandLineHandler should allow multiple groups https://pharo.fogbugz.com/f/cases/11678 11628 Give Job its own announcer, no longer use the SystemAnnouncer [Backport] https://pharo.fogbugz.com/f/cases/11628 Diff information: http://ss3.gemstone.com/ss/Pharo20/Morphic-MarcusDenker.1378.diff http://ss3.gemstone.com/ss/Pharo20/Kernel-MarcusDenker.1354.diff http://ss3.gemstone.com/ss/Pharo20/ConfigurationCommandLineHandler-Tests-Ma… http://ss3.gemstone.com/ss/Pharo20/ConfigurationCommandLineHandler-Core-Mar…

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Cog code compaction crash when stepping in the debugger
by Eliot Miranda Sept. 25, 2013

Sept. 25, 2013

Hi All, I'm seeing an occasional crash in Cog when stepping the simulator when working on Spur. The crash comes about when the system executes primitiveStoreStackp (primitive 76) as part of ContextPart>>push:, and a code compaction occurs within the primitive. The crash.dmp file looks like the following (eliding for brevity): Bus error Sat Sep 21 06:03:12 2013 ... C stack backtrace: 0 Squeak 0x000700a1 reportStackState + 145 1 Squeak 0x00070a32 sigsegv + 306 2 libSystem.B.dylib 0x99fa105b _sigtramp + 43 3 ??? 0xffffffff 0x0 + 4294967295 4 Squeak 0x00101d9a interpret + 2970 ... Smalltalk stack dump: 0xbffe2ae8 M MethodContext(ContextPart)>push: 0x1d95abac: a(n) MethodContext 0xbffe2b0c M MethodContext(ContextPart)>return:from: 0x1d95ab50: a(n) MethodContext 0xbffe2b34 I MethodContext(ContextPart)>methodReturnReceiver 0x1d95ab50: a(n) MethodContext 0xbffe2b5c M MethodContext(InstructionStream)>interpretNextInstructionFor: 0x1d95ab50: a(n) MethodContext 0xbffe2b78 M MethodContext(ContextPart)>step 0x1d95ab50: a(n) MethodContext ... Most recent primitives ... primitiveWait at:put: signal @ basicNew shallowCopy findSubstring:in:startingAt:matchTable: indexOfAscii:inString:startingAt: perform: objectAt: at: findNextUnwindContextUpTo: at:put: at:put: stackp: **CompactCode** But this isn't telling me enough. Firstly I've just committed changes to http://www.squeakvm.org/svn/squeak/branches/Cog/platforms/Mac%20OS/vm/sqMac… http://www.squeakvm.org/svn/squeak/branches/Cog/platforms/unix/vm/sqUnixMai… also print the register state when the VM segfaults or gets sent SGUSR1 etc. I can't test on FreeBSD. If anyone builds with these changes on Free BSD can they please let me know if they work or not? Secondly perhaps someone has a reproducible case coming from running e.g. ContextPart>>runAtEachStep: type code? If so, please can I have a copy? Lastly, if anyone has a crash that matches the above, but with the new crash dump info, I'd love to see the crash.dmp file. Thanks, Eliot

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Re: [Pharo-dev] [Vm-dev] [NB] Trying to implement a ReadStream on NBExternalAddress
by Eliot Miranda Sept. 25, 2013

Sept. 25, 2013

Hi Tim, Hi All, On Wed, Sep 25, 2013 at 12:46 PM, tim Rowledge <tim(a)rowledge.org> wrote: > > > On 25-09-2013, at 11:36 AM, Eliot Miranda <eliot.miranda(a)gmail.com> wrote: > > > On Wed, Sep 25, 2013 at 10:39 AM, tim Rowledge <tim(a)rowledge.org> wrote: > > > > > > On 25-09-2013, at 9:30 AM, Eliot Miranda <eliot.miranda(a)gmail.com> > wrote: > > > > > Off the top of my head it may need the memory manager to add a > "sliver" object type, an 8-byte header with no fields, that is collected by > coallescing with adjacent free blocks, that can fill in the 8-byte gaps > aligning pinned objects on 16 byte boundaries would create. I'll think > about this. > > > > > > > Wild-ass suggestion; would it work to allocate the relevant object > (which I'm assuming here is essentially an UninterpretedBytes) with an > 'extra' 8 bytes and then store the 'real' bits at the right place to have > the 16byte boundary? Yes, there would have to be magic to signify where the > real start of data is. Yes, it would potentially change on scavenge, but > since these are largely pinned, not such a big issue maybe? > > > > In general that's a bad idea because it loads the frequent path > (accessing the object) with the work, unloading the infrequent path > (pinning the object). It can't happen during scavenge because by > definition pinned objects are not in new space. hence I think the time to > take the hit is on pinning (an infrequent operation). Make sense? > > Almost always. But it's worth throwing wild ideas around occasionally just > to see if they stick to the blanket. > Yes!! I was almost going to post something on just this point. Thanks for the prompt. I want to encourage everyone to throw ideas out there without fear of their being proved wrong. Discussing the ideas has great value whether or not they;re right. The other day Clement had a good idea about become. I'd not thought about the issue he brought up before, and his suggestion, even though I don't think it'll work, made me think about the issue and helped clarify my thinking. So yes, please keep throwing out those ideas. And don't get discouraged by critical responses. > How about two subclasses - one for each possible 8byte alignment? The FFI > code only gets a ptr to the right place anyway, so it won't care. Accessor > methods would be minimally different for the two subclasses and handle the > offset for ST code. Compacting, if it ever touched instances, would swap > the class if required. How's that for adaptive optimisation ;-) > That could work, but offends my sense of the separation between the system and the VM. So I don't feel like going there :-) > Or how about simply not allocating the actual memory in object space? I > know it can be a pain but perhaps it's less of a pain in the end. > That one can always do. The FFI will always provide some sort of interface to malloc and/or valloc (even if it is as primitive as actually calling those functions). But the question for Spur is what facilities it should provide and I want to provide something much easier to use (i.e. pinned ByteArrays and the like). -- cheers, Eliot

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latest builds with FileSystem problem?
by Esteban Lorenzano Sept. 25, 2013

Sept. 25, 2013

Hi, I'm experiencing some problems with FileSystem in last Pharo3 builds... can someone confirm you have also the problem or just happens in my machine so far? thanks, Esteban

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JQueryWidgetBox now on STHub + CI
by Torsten Bergmann Sept. 25, 2013

Sept. 25, 2013

Hi, we moved JQueryWidgetBox also over to STHub. Thanks go to PaulDeBruicker for changes in the config, I now also: - left version 2.7 of JQueryWidgetBox for old Seaside30 (Seaside 3.0.7) - created 2.8 of JQueryWidgetBox for the new Seaside3 that is on STHub (Seaside 3.0.8) - created some markdown docu on the ConfigurationOfJQueryWidgetBox (class comment and a pragma method to make it visible in PharoOnlineHelp (if loaded) - updated the docu on http://smalltalkhub.com/#!/~Seaside/JQueryWidgetBox - created a CI job on https://ci.inria.fr/pharo-contribution/job/JQueryWidgetBox/ which is GREEN For details check out the project page: http://smalltalkhub.com/#!/~Seaside/JQueryWidgetBox Bye T.

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