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

Re: [Pharo-project] Pharo 2.0 Jenkins build failing

by Sean P. DeNigris

The build is now green! The last successful build is update #20132. Thank you Steph, Esteban, and Marcus :) In the future, if anyone wants to update 2.0 headlessly past #20119, you will need to wrap the update code in an error handler like the following (headful updating will work out of the box without this): [ UpdateStreamer new beSilent; updateFromServer ] on: MessageNotUnderstood do: [ :e | (e message selector = #label: and: [ e receiver isKindOf: BlockClosure]) ifTrue: [ e resume ] ] Cheers, Sean -- View this message in context: http://forum.world.st/Pharo-2-0-Jenkins-build-failing-tp4634306p4634823.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

June 14, 2012

[Pharo-project] IWST'12 deadline extension

by Alain Plantec

Dear Smalltalkers, We would like to inform you that we will extend the deadline for IWST 2012 submission to Monday, June 25th. We have received several requests asking for a delay concerning the submission deadline. Please can you disseminate this information and use the CFP to invite some of your colleagues/students/partners to submit papers. Your support is essential to make IWST 2012 a success. Please find attached to this message the CFP (with deadline extension), so as you can disseminate the CFP through your own mailing lists. We also hope you will be able to submit some of your contributions. Home page:http://www.esug.org/Conferences/2012/International-Workshop---IWST-2012 Submission:http://www.easychair.org/conferences/?conf=iwst2012 Thank you for your interest in IWST'2012 and if you have any questions, feel free to contact us, it will be our pleasure to exchange with you. Best regards, Program Co-chairs LoÃ¯c Lagadec, Alain Plantec Lab-STICC, UniversitÃ© de Bretagne Occidentale

June 14, 2012

[Pharo-project] [update 2.0] #20132

by Esteban Lorenzano

20132 ----- Issue 6055: [BUG] New System Progress doesnt work when headless http://code.google.com/p/pharo/issues/detail?id=6055

June 14, 2012

Re: [Pharo-project] Fastest utf-8 encoder contest

by Igor Stasenko

On 14 June 2012 14:05, Henrik Sperre Johansen <henrik.s.johansen(a)veloxit.no> wrote: > On 13.06.2012 14:59, Igor Stasenko wrote: >> >> On 13 June 2012 10:31, Philippe Marschall >> <philippe.marschall(a)netcetera.ch> Â wrote: >>> >>> On 06/13/2012 04:44 AM, Igor Stasenko wrote: >>>> >>>> Hi, hardcore hackers. >>>> please take a look at the code and tell if it can be improved. >>>> >>>> The AsmJit snippet below transforms an unicode integer value >>>> to 1..4-byte sequence of utf-8 >>>> >>>> then the outer piece of code (which is not yet written) will >>>> accumulate the results of this snippet >>>> to do a memory-aligned (4byte) writes.. >>>> like that, if 4 unicode characters can be encoded into 4 utf-8 bytes >>>> (which mostly the case for latin-1 char range), then there will be >>>> 4 memory reads (to read four 32-bit unicode values) but only single >>>> memory write (to write four 8-bit utf-8 encoded values). >>>> >>>> The idea is to make utf-8 encoding speed close to memory copying speed >>>> :) >>> >>> In Seaside we use an other trick that Andreas Raab come up with. The >>> assumption is that most of the strings are ASCII [1]. We use a CharSet / >>> bitmap to quickly scan the string for the index of the first non-ASCII >>> character. If we find none we just answer the argument. No copying at >>> all. >>> >> Well, in my case i will need copying because i need to null-terminate it, >> to represent it as null-terminated string. >> This is what cairo library expects as input for rendering text. >> And this also means that i can use a single buffer for conversions to >> avoid generating garbage, i.e. >> i take input string, convert it to utf8 in private buffer, then pass >> that buffer as input to external call, >> on next call an input can be any other string, but output will be the >> same private buffer. >> I will be needing to allocate new buffer if incoming string does not >> fits into it. > > So, is this a one-off for Cairo, or are you planning on introducing a > <var: #myStringParameter encoding: #utfXX> > pragma or something to NBFFI? > Well, there is utf-8 encoder in examples, see NBUTF8StringExample which converts WideString to utf-8 encoded string on stack, and then that string is passed as argument to external function. The drawback of this approach is that results of conversion is not accessible from language side, they are visible only to external function and once call is made, it is gone. > Because, on Windows system calls either expect the local system code page, > or utf16 (depending on which version of the API you use), while the in other > libraries the expected encoding may be different from the one of the system > libraries. > Yes, but those will require many different conversion algorithms.. But i am not interested in making a general-purpose (our world)->all possible encodings converters right now. I just wanna make fast utf-8 encoder for things i am working on :) > Heck, the same lib may expect different encodings, case in point: > The expected encoding of the Oracle client lib (and by extension DBXTalk*) > depends on either an environment variable, what you told it to expect using > an API function, or one of many other fallbacks I can't remember at the > moment. > > Cheers, > Henry > > *<rant> OpenDBX makes an explicity choice to simply pass the data you hand > it over to whatever backend you have hooked up raw. Very nice of a library > that does a good job of abstracting the actual API of communicating with a > database to leave it up to you to decide which encoding to use (which > depends on the abstracted away backend...) if you want your data stored > correctly... There is a reason those benchmarks are fast! :) </rant> > -- Best regards, Igor Stasenko.

June 14, 2012

Re: [Pharo-project] WriteStream, nextPutAll:, OrderedCollections

by Sean P. DeNigris

Camillo Bruni-3 wrote > > it's rather easy to create an image that works with the replaced classes. > But creating a nice loadable > slice / changeset is a rather fragile and tedious task :P > Ha ha... yes, I've noticed that too :) Also, the unintended consequences when people start to use it (e.g. old Squeak zip date formats) -- View this message in context: http://forum.world.st/WriteStream-nextPutAll-OrderedCollections-tp4634624p4… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

June 14, 2012

[Pharo-project] [update 2.0] #20131

by StÃ©phane Ducasse

20131 ----- - Issue 6060: New some ensure methods to FileSystem. Thanks Sean De Nigris and Mariano Martinez-Peck. http://code.google.com/p/pharo/issues/detail?id=6060.

June 14, 2012

[Pharo-project] [update 2.0] #20130

by StÃ©phane Ducasse

20130 ----- - Issue 6059: Problem with FileHandle >> open. http://code.google.com/p/pharo/issues/detail?id=6059 - Issue 6056: Typo updete in TestRunner http://code.google.com/p/pharo/issues/detail?id=6056 - Issue 6062: faster InstructionStream>>#interpret http://code.google.com/p/pharo/issues/detail?id=6062

June 14, 2012

Re: [Pharo-project] WriteStream, nextPutAll:, OrderedCollections

by StÃ©phane Ducasse

Ok so join forces and propose something. On Jun 14, 2012, at 3:19 PM, Denis Kudriashov wrote: > 2012/6/14 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > If one group of guys would take the lead we could introduce XTream in 2.0 and slowly start to integrate and deprecate slowly the old streams. Who is interested in that? > > > I am very very want it:)

June 14, 2012

Re: [Pharo-project] WriteStream, nextPutAll:, OrderedCollections

by Damien Cassou

On Thu, Jun 14, 2012 at 3:19 PM, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > I am very very want it:) I guess the question was not "who would like this?" but more "who will take the lead and make it happen?" To you or Nicolas want to take the lead and make it happen? -- Damien Cassou http://damiencassou.seasidehosting.st "Lambdas are relegated to relative obscurity until Java makes them popular by not having them." James Iry

June 14, 2012

Re: [Pharo-project] WriteStream, nextPutAll:, OrderedCollections

by Denis Kudriashov

2012/6/14 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > If one group of guys would take the lead we could introduce XTream in 2.0 > and slowly start to integrate and deprecate slowly the old streams. Who is > interested in that? > > I am very very want it:)

June 14, 2012