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

[Pharo-project] Tips for efficient multi-serial handling
by Udo Schneider Nov. 8, 2012

Nov. 8, 2012

All, coming from a Node.JS background for those kind of tasks I'm not quite sure how to do it "correctly" in Pharo. I need to * listen on up to 32 serial (USB) ports for incoming commands. Each might use a different "protocol". * listen to network ports, midi channels or OSC * if communication is received then a response could be send over multiple of the channels mentioned above * reaction time - means incomming message, decode, encode of response and distribution over other channels should ideally be around 10^-2 s. I already found all the necessary communication classes in Pharo - and being back in Smalltalk again parsing the commands is a real pleasure :-) The one thing that makes me really nervous though is serial support. Up to now I spawn a separate (Smalltalk) process for each serial port that polls the serial port for new bytes - as far as I see polling is the only available option. Although this seems to work it wastes a considerable amount of CPU cycles IMHO. On my current system (MBP/i7) I can't have enough channels to even barely bog the system down. However the deployment platform I'm looking at is more in the range of an Raspberry Pi... In Node.JS I'd simply create callbacks for all the different incoming channels - so I wouldn't waste cycles for polling. So what would be the best/recommended way to achieve this in Pharo? Thanks, Udo

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[Pharo-project] Cheating NB FFI ByteArray size
by Mariano Martinez Peck Nov. 8, 2012

Nov. 8, 2012

Hi Igor. I wonder if I can do the following. I have to pass a ByteArray to a function that expects an already malloced char*. So far it is working fine. Now...what I would like is from the image side to allocate a ByteArray of size + 4. I need to reserve the first 4 bytes of the ByteArray for something. But the library I am calling doesn't let me specify where to start from that char*. So...can I cheat? I mean, can I allocate ByteArray+4 in the image, but when passing it as an argument somehow say "ok, take this ByteArray but think the the beginning is the byte 4" ? or something like that ? Thanks! -- Mariano http://marianopeck.wordpress.com

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[Pharo-project] Pharo 2.0 and Metacello preview
by Igor Stasenko Nov. 8, 2012

Nov. 8, 2012

Basically, what is needed is: VMs with OSProcess installed by default Image(s) with OSProcess then Metacello Preview will be functional. The reason why , i personally want that, is to be able to use git for monticello. and be able to store C sources and smalltalk sources (VMMaker) in a single git repo. -- Best regards, Igor Stasenko.

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[Pharo-project] Git API for Pharo
by roberto.minelli＠usi.ch Nov. 7, 2012

Nov. 7, 2012

Hello, I need to access a Git repository programmatically from Pharo. Is there any API to work with Git working copies, access and manipulate repositories programmatically? In short I need to checkout each revision of a project and extract some meta-data from each revision. Thanks in advance, Roberto

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[Pharo-project] [update 2.0] #20384
by Marcus Denker Nov. 7, 2012

Nov. 7, 2012

20384 ----- Issue 6931: Command Line: load image update http://code.google.com/p/pharo/issues/detail?id=6931 Issue 6932: Repository not added to some packages http://code.google.com/p/pharo/issues/detail?id=6932 Diff information: http://ss3.gemstone.com/ss/Pharo20/System-CommandLine-MarcusDenker.56.diff -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] Fixing the cmd+" with smart character => '
by StÃ©phane Ducasse Nov. 7, 2012

Nov. 7, 2012

Yes Ben I'm trying to fix this really strange behavior of smart characters :) Yes I want to be more productive so I'm fixing the glitches. Now this is funny without smartCharacter cmd+"+ shift + selection produces "selection" cmd+' + selection produces 'selection' so far so good. now with smart characters cmd+' + selection produces 'selection' cmd+"+ shift + selection produces 'selection' where the fun start is that pressing shift+' produces an event whose keyValue is ' and not " :) in fact the keystroke is even funkier :) [keystroke '<Cmd-'>'] Stef

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[Pharo-project] MongoTalk public API changes
by Francois Stephany Nov. 7, 2012

Nov. 7, 2012

I've commited some changes to MongoTalk that change the public interface and the behavior of the driver. The queries are now made with a MongoQuery object. This simplifies the interaction between Mongo, MongoDatabase and MongoCollection. I've added support for ordering, limit and offset. There's a lot more to do ut time is scarce. I've created a public trello board for the project (sorry Esteban :p): https://trello.com/board/mongotalk-voyagemongo/50992a46900347431c00c64a Right now, Voyage is broken with the latest MongoTalk version. You should be safe if you use the MetacelloConfiguration. Let me know if you're using the MongoTalk driver and you need something or if I'm breaking all your code. Thanks, Francois

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[Pharo-project] SqueakSource Mails
by Sven Van Caekenberghe Nov. 7, 2012

Nov. 7, 2012

Guys, I am receiving hundreds of old commit emails from SqueakSource since the latest restart. This happened before as well. Is anybody else seeing this as well ? And can something be done about this ? Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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[Pharo-project] [update 2.0] #20383
by Esteban Lorenzano Nov. 7, 2012

Nov. 7, 2012

20383 ----- Issue 6921: Better handling of smart characters http://code.google.com/p/pharo/issues/detail?id=6921 Issue 6914: cleanUpForProduction is not unloading Metacello inf http://code.google.com/p/pharo/issues/detail?id=6914 Issue 6910: Nautilus enable CMD-R for renaming temporaries http://code.google.com/p/pharo/issues/detail?id=6910 Issue 3816: Time millisecondClockValue wraps around way too quickly http://code.google.com/p/pharo/issues/detail?id=3816 Diff information: http://ss3.gemstone.com/ss/Pharo20/Text-EstebanLorenzano.35.diff http://ss3.gemstone.com/ss/Pharo20/Network-Kernel-EstebanLorenzano.74.diff http://ss3.gemstone.com/ss/Pharo20/NautilusRefactoring-EstebanLorenzano.55.… http://ss3.gemstone.com/ss/Pharo20/NECompletion-EstebanLorenzano.64.diff http://ss3.gemstone.com/ss/Pharo20/Kernel-EstebanLorenzano.1234.diff

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[Pharo-project] Manifest integration update failing
by Camillo Bruni Nov. 7, 2012

Nov. 7, 2012

how did the 20382 update work on the build server? If I try to update an older image I get a warning when ((Smalltalk at: #ConfigurationOfManifest) project version: #stable) load. is evaluated: "No version found for #stable of ConfigurationOfRefactoringBrowser"? best cami

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