July 2010 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Cleaning morphic - Step 1 - About "Morphic-Ballon" and the Ballon category

by Mariano Martinez Peck

Guille: one thing you can do before removing the code, is to prepare an DEV image with Seaside, Moose and all those big projects. So that when you search senders/references you can do it also there. I don't mean that we shouldn't remove them if they are used in those projects, but just to be aware. but for "coding" and commiting, yes, use latest PharoCore, not dev. And yes, if you don't receive feedback, go ahead! Cheers Mariano 2010/7/19 Guillermo Polito <guillermopolito(a)gmail.com> > Ok, I opened an Issue for this... > > http://code.google.com/p/pharo/issues/detail?id=2696 > > > On Thu, Jul 15, 2010 at 8:18 PM, Guillermo Polito < > guillermopolito(a)gmail.com> wrote: > >> Hi! >> >> Does anyone know what the Ballon category and its related morphs are for? >> Someone uses it? Is it useful in the Core of pharo? >> >> Did Someone try previously to remove it and failed? why? >> >> thanks in advance :) >> Guille >> > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 19, 2010

Re: [Pharo-project] Cleaning morphic - Step 1 - About "Morphic-Ballon" and the Ballon category

by Guillermo Polito

Ok, I opened an Issue for this... http://code.google.com/p/pharo/issues/detail?id=2696 On Thu, Jul 15, 2010 at 8:18 PM, Guillermo Polito <guillermopolito(a)gmail.com > wrote: > Hi! > > Does anyone know what the Ballon category and its related morphs are for? > Someone uses it? Is it useful in the Core of pharo? > > Did Someone try previously to remove it and failed? why? > > thanks in advance :) > Guille >

July 19, 2010

Re: [Pharo-project] Unicode everywhere

by Philippe Marschall

On 19.07.2010 07:12, Miguel Enrique CobÃ¡ MartÃnez wrote: > ... > 2. This text be correctly send to a modern web browser and rendered in > utf-8 encoding correctly. In Seaside 2.8 - use WAKomEncoded - configure the application to use utf-8 - do _not_ send #convertToEncoding: In Seaside 3.0 rc - set the encoding on the server to utf-8 - do _not_ send #convertToEncoding: If that doesn't work please post on the Seaside mailing list with: - the exact Pharo image version you have - the exact Seaside version you have - the exact Kom version you have - does the String display correctly in inspector? - the output of (yourString convertToEncoding: 'utf-8') asByteArray > 3. Upload a java messages bundle (or a file with characters outside > ASCII) with a web browser posted to a Seaside application, stored > temporaly in disk on the server and processed correctly (by opening it > with some FileStream class) inside the image. Java message bundles: saving: - open a file stream in binary mode - save contents of the upload to the stream reading: - open a file stream in text mode and iso-8859-1 as the encoding. This will only work for Latin-1 character's but Java message bundles support Unicode. You need to manually process Unicode escapes [1]. other files with characters outside ASCII: saving: - open a file stream in binary mode - save contents of the upload to the stream reading: - Open a file stream in text mode and the correct encoding on the file. Knowing the right encoding is hard to impossible. Seaside doesn't know it because the browser doesn't tell Seaside. The browser doesn't know it because the operating system doesn't know either. [1] http://java.sun.com/docs/books/jls/third_edition/html/lexical.html#3.3 Cheers Philippe

July 19, 2010

Re: [Pharo-project] [Vm-dev] Are objects moved (changed the address in memory)?

by Eliot Miranda

On Mon, Jul 19, 2010 at 6:16 AM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > > Hi. Nebwie here. THe first question is if objects are moved (changed the > address in memory) at runtime? yes. > I am 99% sure the answer is true. If so: > > 1) Who moves them ? the GC? > yes. > 2) when ? agains which events, what triggers these movements? > during garbage collection > 3) why they are moved? to compact the memory ? why the memory needs to be > compact? for arrays? > In Squeak's case to compact memory. But scavenging/two-space-collection is a widely used technique that works by copying the live objects from one space into another, com[acting as it goes, and so it is expected with modern algorithms that memory is compacted as garbage is collected. See Paul Wilson's Uniprocessor Garbage Collection Techniques<http://www.complang.tuwien.ac.at/ulrich/gcsurvey.ps.gz> . > 4) Is there a way to say "please, don't move this object X" ? what would > be the problem of having a lot of these "non-moveable" objects? memory > fragmentation ? > Not yet. I'm working on it for Teleplace's threaded Cog VM. > If you can point me to the code also I would be happy. > See the garbage collection and gc protocols in ObjectMemory and (in Cog) NewObjectMemory in VMMaker. > Thank you very much in advance, > > Mariano > HTH Eliot

July 19, 2010

Re: [Pharo-project] Are objects moved (changed the address in memory)?

by Hernan Wilkinson

Hi Mariano, 2010/7/19 Mariano Martinez Peck <marianopeck(a)gmail.com> > Hi. Nebwie here. THe first question is if objects are moved (changed the > address in memory) at runtime? I am 99% sure the answer is true. If so: > > yes, you were right, objects are moved in memory. > 1) Who moves them ? the GC? > yes, and depends on the GC there are moved to different areas, at different point in times, etc. > 2) when ? agains which events, what triggers these movements? > The event is that there is no more memory to allocate in the space the object is being created... for example in a generation scavenging gc, when the new space is full, it triggers and scavenging and objects are moved to other new space or they are tenured to the old space. When the old space is full, it usually triggers a mark & sweep where object are moved again. > 3) why they are moved? to compact the memory ? why the memory needs to be > compact? for arrays? > There are two important things to do with memory management: allocate and deallocate :-) Allocation and deallocation could lead to memory fragmentation and that could lead to slow memory allocation (for example, looking for a spot to allocate the object) or to the impossibility to allocate an object even though summing the free space in the small chunks you have memory for that object... Generation scavenging solved the fragmentation problem in the new space in a very clever way (as Ungar usually do things :-) ). Objects are created one after the other (in the memory space I mean) and when the new space is full, only survivors are copied to the other new space, putting them one behind the other at the same time, so no fragmentation after scavenging... > 4) Is there a way to say "please, don't move this object X" ? what would > be the problem of having a lot of these "non-moveable" objects? memory > fragmentation ? > that depends on each smalltalk implementation, there is usually a way to do that because some objects are used to communicate with the operationg system and those objects can not be moved (for example). In Visual Age there is a fix object space were you can put those objects, so the gc do not reach them and the programmer is the responsible to deallocate them. Not sure if phare/squeak have that option. Also, if I'm not wrong, the squeak vm does not use scavenging... I believe it only uses mark & sweep, but not sure there, I may be wrong. > If you can point me to the code also I would be happy. > I have a lot of papers about that. I send them to you personally. Also, if you want to see how the gc on squeak vm works, use the interpreter simulator! that is great. If you need and image to run that, let me know. I used it for my thesis a long time ago (well... long, 10 year ago :-) ) and it was great. Bye, Hernan. > > Thank you very much in advance, > > Mariano > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 19, 2010

Re: [Pharo-project] connection to access databases

by Eliot Miranda

moduleName "Return the name of the module for this library" Smalltalk platformName = 'Win32' ifTrue:[^'odbc32']. Smalltalk platformName = 'unix' ifTrue:[^ 'libodbc.so']. Smalltalk platformName = 'Mac OS' ifTrue:[^ 'libiodbc.dylib']. ^self error: 'Don''t know the ODBC library name' works for me. Find attached. On Mon, Jul 19, 2010 at 1:41 AM, Tudor Girba <tudor.girba(a)gmail.com> wrote: > Hi, > > Thanks for all the pointers. I am now testing on Mac using the Actual > driver: > http://www.actualtech.com/product_access.php > > I managed to get it running, but now I have problems with the ODBC Pharo > implementation because there seems to be no module for Mac: > > ODBCLibrary class>>moduleName > "Return the name of the module for this library" > SmalltalkImage current platformName = 'Win32' ifTrue: [ ^ 'odbc32' > ]. > SmalltalkImage current platformName = 'unix' ifTrue: [ ^ > 'libodbc.so' ]. > ^ self error: 'Don''t know the ODBC library name' > > Is there something to be done in this area? > > Cheers, > Doru > > > On 19 Jul 2010, at 01:04, GermÃ¡n Arduino wrote: > > Yes, Indeed, I mean, I used a driver to access, but can't remember now >> the brand, but I'm sure I not payed for it :) >> >> May be I used some trial version.... >> >> 2010/7/18 Levente Uzonyi <leves(a)elte.hu>: >> >>> >>> On Sun, 18 Jul 2010, GermÃ¡n Arduino wrote: >>> >>> Not, I'm not talking of propietary software. >>>> >>>> I'm talking of one I used when helped Diego with the testing of the >>>> odbc package. Don't remember now, but may be this >>>> http://www.unixodbc.org/ ? >>>> >>> >>> ODBC is just an API, if you don't have a driver for yourdatabase, then it >>> won't help. >>> >>> >>> Levente >>> >>> >>>> About Mac, sorry, never touched a mac in all my life.... >>>> >>>> Cheers. >>>> >>>> >>>> 2010/7/18 Levente Uzonyi <leves(a)elte.hu>: >>>> >>>>> >>>>> On Sun, 18 Jul 2010, GermÃ¡n Arduino wrote: >>>>> >>>>> Hi Tudor: >>>>>> >>>>>> Is as Levente says, you must define an ODBC source on a Windows PC >>>>>> (Alternatively on Unix you can use ODBC also). >>>>>> >>>>> >>>>> I don't know any free ODBC drivers for Access on un*x. I only know a >>>>> driver >>>>> which costs 4-5 times more than the windows OS itself :). But >>>>> there's a driver for mac which costs only 30 usd if you're interested. >>>>> >>>>> >>>>> Levente >>>>> >>>>> >>>>>> Some examples on: http://wiki.squeak.org/squeak/2480 >>>>>> >>>>>> Cheers. >>>>>> GermÃ¡n. >>>>>> >>>>>> >>>>>> 2010/7/18 Levente Uzonyi <leves(a)elte.hu>: >>>>>> >>>>>>> >>>>>>> On Sun, 18 Jul 2010, Tudor Girba wrote: >>>>>>> >>>>>>> Thanks Mariano! >>>>>>>> >>>>>>>> Indeed, if I load ConfigurationOfFFI first, everything loads well. >>>>>>>> >>>>>>>> I am a complete newbie in this area. Can anyone tell me what I >>>>>>>> should >>>>>>>> do >>>>>>>> next? >>>>>>>> >>>>>>>> I imagine that I should connect to an Access server. If yes, how >>>>>>>> would >>>>>>>> I >>>>>>>> do that? >>>>>>>> >>>>>>>> Also, do I need anything else, like a C plugin/library to get the C >>>>>>>> calls >>>>>>>> from ODBCLibrary going? >>>>>>>> >>>>>>> >>>>>>> First you'll need a pc running windows. Then you have to create an >>>>>>> ODBC >>>>>>> Data >>>>>>> Source for your Access file. Then you'll be able to create a >>>>>>> connection >>>>>>> to >>>>>>> that datasource from your image. >>>>>>> >>>>>>> >>>>>>> Levente >>>>>>> >>>>>>> >>>>>>>> Cheers, >>>>>>>> Doru >>>>>>>> >>>>>>>> >>>>>>>> On 18 Jul 2010, at 09:17, Mariano Martinez Peck wrote: >>>>>>>> >>>>>>>> >>>>>>>>> >>>>>>>>> On Sun, Jul 18, 2010 at 8:49 AM, Tudor Girba < >>>>>>>>> tudor.girba(a)gmail.com> >>>>>>>>> wrote: >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> I tried loading it, but I get : >>>>>>>>> "This package depends on the following classes: >>>>>>>>> ExternalLibrary >>>>>>>>> ExternalStructure" >>>>>>>>> >>>>>>>>> Can anyone tell me where to find these from? >>>>>>>>> >>>>>>>>> This means that you need Metacello ;) >>>>>>>>> >>>>>>>>> Those classes are from FFI, a pre-requisite for ODBC to work. >>>>>>>>> Maybe there is a ConfigurationOfODBC somewhere... >>>>>>>>> >>>>>>>>> For the moment, I recommend you to install FFI using the >>>>>>>>> ConfigurationOfFFI. >>>>>>>>> >>>>>>>>> Cheers >>>>>>>>> >>>>>>>>> Mariano >>>>>>>>> >>>>>>>>> >>>>>>>>> Also, are there eternal prerequisites to work with ODBC? >>>>>>>>> >>>>>>>>> Cheers, >>>>>>>>> Doru >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> On 18 Jul 2010, at 00:35, Levente Uzonyi wrote: >>>>>>>>> >>>>>>>>> On Sat, 17 Jul 2010, Tudor Girba wrote: >>>>>>>>> >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> Is there a way to connect to a Microsoft Access database from >>>>>>>>> Pharo? >>>>>>>>> >>>>>>>>> Yes, with ODBC. >>>>>>>>> >>>>>>>>> >>>>>>>>> Levente >>>>>>>>> >>>>>>>>> >>>>>>>>> I have an mdb file of 300 Mb that I would need to analyze. >>>>>>>>> >>>>>>>>> Cheers, >>>>>>>>> Doru >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> www.tudorgirba.com >>>>>>>>> >>>>>>>>> "Next time you see your life passing by, say 'hi' and get to know >>>>>>>>> her." >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Pharo-project mailing list >>>>>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Pharo-project mailing list >>>>>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>>>>> >>>>>>>>> -- >>>>>>>>> www.tudorgirba.com >>>>>>>>> >>>>>>>>> "Speaking louder won't make the point worthier." >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Pharo-project mailing list >>>>>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Pharo-project mailing list >>>>>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> www.tudorgirba.com >>>>>>>> >>>>>>>> "When people care, great things can happen." >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Pharo-project mailing list >>>>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Pharo-project mailing list >>>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>>> >>>>>>> >>>>>> _______________________________________________ >>>>>> Pharo-project mailing list >>>>>> Pharo-project(a)lists.gforge.inria.fr >>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>>> >>>>> >>>>> _______________________________________________ >>>>> Pharo-project mailing list >>>>> Pharo-project(a)lists.gforge.inria.fr >>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>>> >>>>> >>>> >>>> >>>> -- >>>> ================================================= >>>> GermÃ¡n S. Arduino <gsa @ arsol.net> Twitter: garduino >>>> Arduino Software & Web Hosting http://www.arduinosoftware.com >>>> PasswordsPro http://www.passwordspro.com >>>> ================================================= >>>> >>>> >>>> _______________________________________________ >>>> Pharo-project mailing list >>>> Pharo-project(a)lists.gforge.inria.fr >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>>> >>> >>> _______________________________________________ >>> Pharo-project mailing list >>> Pharo-project(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>> >>> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > -- > www.tudorgirba.com > > "Every thing should have the right to be different." > > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 19, 2010

Re: [Pharo-project] XML Demarshalling (Hern?n Morales Durand)

by HernÃ¡n Morales Durand

Hi Larry, I think what you're searching for is something like some experiments I did with this project http://www.squeaksource.com/LanguageInfo.html you will find information on how to install and test here http://swikicaicyt.homeip.net/WebOpus/44 (do not forget to download and uncompress the data files) For your specific question you may put a halt into LIStatisticsReader>>addStatistics or CDLRISO15924Reader>>addScripts to see examples of demarshalling a XML file. Hope it helps. HernÃ¡n 2010/7/16 Larry Gadallah <lgadallah(a)gmail.com>: > On 16 July 2010 11:54, Â <pharo-project-request(a)lists.gforge.inria.fr> wrote: >> Message: 7 >> Date: Fri, 16 Jul 2010 15:52:27 -0300 >> From: Hern?n Morales Durand <hernan.morales(a)gmail.com> >> Subject: Re: [Pharo-project] XML Demarshalling >> To: Pharo-project(a)lists.gforge.inria.fr >> Message-ID: >> Â Â Â Â <AANLkTinIZLHI6TRXX9ddV7PSA3a0Xt2vOQbGyQjYfE98(a)mail.gmail.com> >> Content-Type: text/plain; charset=UTF-8 >> >> How big is your XML file? Molecular biology? >> >> Hern?n >> >> 2010/7/16 Larry Gadallah <lgadallah(a)gmail.com>: >>> Hi all: >>> >>> I am a noob searching for an example of how to demarshall a set of >>> simple and complex XML nodes into an object using Pastell or something >>> similar. I have found many examples of how to pick out all of the >>> elements of a certain type into a collection, but I'm trying to grab >>> the data from a mixed collection of (~20) elements that are children >>> of a particular element type and unpack them into an object. >>> >>> Does anyone know of some good examples of how to do this using Pastell >>> or something similar? >>> > > Hernan: > > The files are definitely not molecular biology. They are quite small, > and they represent simple catalog items with typical attributes (i.e. > item number, name, rating, etc.). > > The element hierarchy looks something like this: > > <catalog> > <status> > </status> > <products> > <list> > <product> > > <id></id> > <name></name> > <reviews> > ... > </reviews> > <labels> > .... > <labels> > <type></type> > </product> > > </list> > </products> > </catalog> > > So, what I want to do is be able to demarshall <product> elements into > a product object. I have seen plenty of examples of how to grab the > content of all of the name elements, but none showing how to pull all > of the sub-elements of a given element type into an object. > > Thanks, > -- > Larry Gadallah, VE6VQ/W7Â Â Â Â Â Â Â Â Â Â Â Â Â lgadallah AT gmail DOT com > PGP Sig: 917E DDB7 C911 9EC1 0CD9Â C06B 06C4 835F 0BB8 7336 > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 19, 2010

Re: [Pharo-project] help to update actions done in Pharo 1.1

by StÃ©phane Ducasse

Where is the code that we should check to be included in 1.2? Stef On Jul 19, 2010, at 6:18 PM, Levente Uzonyi wrote: > On Mon, 19 Jul 2010, Henrik Johansen wrote: > > ... > The wkd in Pharo 1.1 didn't really result in a speedup :) > Better Identity hashing, encoding conversions, the other collection changes which made it in, plus rendering speedups f.ex through inlining alot of common morph extensions, and using Strike fonts by default, were though! > > > That's a nice euphemism. I didn't check the code thoroughly, but rehashing seems to be O(n^2) in WeakKeyDictionary. This affects it's subclasses and WeakRegistry which affects the whole finalization process. > > (Recently I did a benchmark of Seaside 3.0, where Squeak handled 1.28x more requests/second than Pharo under "heavy load" (50 concurrent users flooding the server) with the Kom adaptor.) > > > Levente > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 19, 2010

Re: [Pharo-project] help to update actions done in Pharo 1.1

by Lukas Renggli

>> Seaside doesn't use any weak data structures. > > Well, not directly. But sockets are registered into a WeakRegistry when > created. I didn't check where the speedup comes in Squeak, but I'm pretty > sure that 99% is related to HashedCollection and subclasses. Ahh, sure. That might be it. Lukas -- Lukas Renggli www.lukas-renggli.ch

July 19, 2010

Re: [Pharo-project] help to update actions done in Pharo 1.1

by Levente Uzonyi

On Mon, 19 Jul 2010, Lukas Renggli wrote: >> That's a nice euphemism. I didn't check the code thoroughly, but rehashing >> seems to be O(n^2) in WeakKeyDictionary. This affects it's subclasses and >> WeakRegistry which affects the whole finalization process. >> >> (Recently I did a benchmark of Seaside 3.0, where Squeak handled 1.28x more >> requests/second than Pharo under "heavy load" (50 concurrent users flooding >> the server) with the Kom adaptor.) > > Seaside doesn't use any weak data structures. Well, not directly. But sockets are registered into a WeakRegistry when created. I didn't check where the speedup comes in Squeak, but I'm pretty sure that 99% is related to HashedCollection and subclasses. Levente > > Lukas > > -- > Lukas Renggli > www.lukas-renggli.ch > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 19, 2010