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[ANN] ExperimentalBit [WAS] Re: Out of the box primitives for bit in ObjectHeader?

by Mariano Martinez Peck

Hi guys. Last days I needed to migrate some old code I used to have in the VM for tracing objects usage. Luc Fabresse wanted also to be able to set and get the value of a bit in the object header to do some experiments. So...we thought it was a good idea to make it abstract an public. So....the following is only one morning work we did together with Luc, so don't expect that much. What we did is to do a very small change in the VM to use one free bit in the object header, and then we coded 3 primitives: one to get the value, one to set it and one to unmark all objects. The idea is that you can use this code and give semantics to the bit. This is just for experimenting and prototypes, not for production code since such bit in the object header may not be available. To download: Gofer it url: 'http://ss3.gemstone.com/ss/ExperimentalBit'; package: 'ConfigurationOfExperimentalBit'; load. Now.... you can read ConfigurationOfExperimentalBit class comment: --------------- ExperimentalBit is a small facade for setting and getting the value of a bit in the Object Header. It requires a special VM which supports the primitives to set and get the value of such bit. You can get a already compiled MacOSX VM from: https://gforge.inria.fr/frs/download.php/30042/ CogMTVM-ExperimentalBit.zip. For more details read class comment of ExperimentalBitHandler. If you already have a compiled VM with the required primitives, then you can just load the image side part evaluating: ((Smalltalk at: #ConfigurationOfExperimentalBit) project version: '1.0') load. If you want to build a VM with the primitives we need, you need to download: ((Smalltalk at: #ConfigurationOfExperimentalBit) project version: '1.0') load: 'VMMakerGroup'. And then follow the steps to build the VM: - http://code.google.com/p/cog/ - http://code.google.com/p/cog/wiki/Guide ----------- And here ExperimentalBitHandler class comment: ----------- ExperimentalBitHandler is a small facade for setting and getting the value of a bit in the Object Header. It requires a special VM which supports the primitives to set and get the value of such bit. You can get a already compiled MacOSX VM from: https://gforge.inria.fr/frs/download.php/30042/ CogMTVM-ExperimentalBit.zip. To know which version of the VM you have to use to compile, check the dependencies in ConfigurationOfExperimentalBit and also the 'description' of it. For example, if version 1.0 it depends on 'CogVM' version '3.7'. In the description of version 1.0 you can also read that the used Git version of the platform code was 4a65655f0e419248d09a2502ea13b6e787992691 from the blessed repo. Basically, there are 3 operations: set the bit to a specific, get the value of the bit and turn off the bit of all objects. Examples: 'aString' experimentalBit: true. 'astring ' experimentalBit. Date today experimentalBit: false. Date today experimentalBit. ExperimentalBitHandler turnOffExperimentalBitOfAllObjects. For more details see ExperimentalBitTest. ------------- Happy Christmats for all the Smalltalk hackers!!! -- Mariano http://marianopeck.wordpress.com On Wed, Dec 14, 2011 at 1:24 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Hi guys. As you may notice, I always try to push in the direction of a VM > where we can have both things: a) a really cooler super fast VM for > production super critical applications and b) the most-flexible-possible > VM for doing reasearh and experiment. > > Now I was thinking the following: we have one free bit in the > ObjectHeader. Let's say you are experimenting with something and you would > like to tag objects, such as, "traversed", "processes", "isProxy", etc. To > do that small experiment you need to modify the VM, adapt the bit, code the > primitives, build the VM, put the smalltalk side part etc etc. So I was > thinking why not providing such small functionality out of the box? the > idea would be not to give semantics to the bit since each user will do > that. So we just provide the VM with 2 primtives, one to get the value > (#getBitValue) and one to set it (#setBitTo:). Choose the names you want. > > Then we do not integrate nothing in our images that use such bit, there > won't be colisions. Then each guy who wants to experiments with that, can > use the primitives and do what he wants. > > Some people is doing something with its bit: Jean Batiptse is doing XXX, I > am doing YYY, etc. Either in his work or mine, there are much more changes > that just that bit, so in anyway, I will end up needing my own VM. > > Finally, I could help in providing the code if it is needed. > > So, what do you think? > > -- > Mariano > http://marianopeck.wordpress.com > > -- Mariano http://marianopeck.wordpress.com

Dec. 22, 2011

Magma in production ?

by Francois Stephany

Is there anybody using the Magma OODB in production? For what kind of application? How does it behave under load? How large is your dataset? How do you perform external backup? What's the best setup? One dedicated image? Cheers, Francois -- http://tulipemoutarde.be BE: +32 (0)65 709 131 CA: +1 778 558 3225

Dec. 15, 2011

[COTDC] 97 - CRCError

by sean＠clipperadams.com

96 classes done 799 classes remaining Continuing in Compression... Today: CRCError Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest p.s. this message was sent from a pharo image. Did you know you could easily do that?!

Dec. 14, 2011

code retreat @ lille

by StÃ©phane Ducasse

Hi guys we got contacted to participate to a code retreat @ lille. I will attend it and I register to it So I imagine, that we can have fun with other people and showing them pharo and hacking. http://coderetreatlille2.eventbrite.com/ Stef

Dec. 14, 2011

Re: [Pharo-users] Company/freelance working with Pharo/Seaside

by StÃ©phane Ducasse

On Dec 13, 2011, at 11:10 AM, Janko MivÅ¡ek wrote: > Hi Stef and others, > > Consortium will certainly give customers some confidence. But only if > information given by consortium will be trustful. This can be achieved > by payments of members to have some status, well, giving some money > always signals some seriousness :) Such company's and freelancer's > status will then be a signal of confidence for customers. > > Of course there is a problem of newcomers wanting to work as freelancers > but at the start cannot afford paying to the consortium. At the other > side we cannot just blindly trust everyone. One solution for that can be > a kind of "network of trust" and in Aida community we actually have a > such one, called Network of Aida professionals. You became a member of > our network if you prove through the work in a community that you are > capable and trustful of serious work on some paid project. sounds really interesting. We should get the same. > Another idea can be to start with a "marketplace" (simply a new mailing > list or existing LinkedIn infrastructure?) for matching supply and > demand of Smalltalk talent. Not just Pharo, let it be broader, we are > too few! There one can announce his ability for some work, on the other > side one can search for people willing to work on some project. we will see. > > Best regards > Janko > > > S, StÃ©phane Ducasse piÅ¡e: >> Janko, stephane and others >> >> We need your inputs to build a structure to answer these questions. >> So what would help you to make your clients feel more confident? >> Again I repeat it (and I know that you know): we are really interested in making business grows around pharo. >> >> so do you think that the consortium could have a list of >> companies offering services? >> freelancers? >> â¦ >> The consortium should help you. >> >> Stef >> >> >> >> >> > > -- > Janko MivÅ¡ek > Svetovalec za informatiko > Eranova d.o.o. > Ljubljana, Slovenija > www.eranova.si > tel: 01 514 22 55 > faks: 01 514 22 56 > gsm: 031 674 565 >

Dec. 13, 2011

Re: [Pharo-users] Company/freelance working with Pharo/Seaside

by Janko MivÅ¡ek

Hi Stef and others, Consortium will certainly give customers some confidence. But only if information given by consortium will be trustful. This can be achieved by payments of members to have some status, well, giving some money always signals some seriousness :) Such company's and freelancer's status will then be a signal of confidence for customers. Of course there is a problem of newcomers wanting to work as freelancers but at the start cannot afford paying to the consortium. At the other side we cannot just blindly trust everyone. One solution for that can be a kind of "network of trust" and in Aida community we actually have a such one, called Network of Aida professionals. You became a member of our network if you prove through the work in a community that you are capable and trustful of serious work on some paid project. Another idea can be to start with a "marketplace" (simply a new mailing list or existing LinkedIn infrastructure?) for matching supply and demand of Smalltalk talent. Not just Pharo, let it be broader, we are too few! There one can announce his ability for some work, on the other side one can search for people willing to work on some project. Best regards Janko S, StÃ©phane Ducasse piÅ¡e: > Janko, stephane and others > > We need your inputs to build a structure to answer these questions. > So what would help you to make your clients feel more confident? > Again I repeat it (and I know that you know): we are really interested in making business grows around pharo. > > so do you think that the consortium could have a list of > companies offering services? > freelancers? > â¦ > The consortium should help you. > > Stef > > > > > -- Janko MivÅ¡ek Svetovalec za informatiko Eranova d.o.o. Ljubljana, Slovenija www.eranova.si tel: 01 514 22 55 faks: 01 514 22 56 gsm: 031 674 565

Dec. 13, 2011

[COTDC] 96 - GZipWriteStream

by DeNigris Sean

94 classes done 16 Packages done 800 classes remaining Continuing in Compression... Today: GZipWriteStream Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest p.s. this message was sent from a pharo image. Did you know you could easily do that?!

Dec. 13, 2011

Re: [Pharo-users] [Pharo-project] Sprint friday 16 @ lille

by Mariano Martinez Peck

ups...sorry, it iwas not intended for the mailing list. Sorry. On Mon, Dec 12, 2011 at 11:00 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > so you changed you mind ;) > we go by car or by train? Luc is finally coming also? > > cheers > > > On Mon, Dec 12, 2011 at 10:51 PM, Noury Bouraqadi <bouraqadi(a)gmail.com>wrote: > >> Hi, >> >> On 9 dÃ©c. 2011, at 09:06, StÃ©phane Ducasse wrote: >> >> > Hi guys >> > >> > I'm not sure that my message passed in the mailing-list. >> > We will organize a sprint new friday and everybody is welcome. >> >> Cool. I'll be there! >> >> > Just let us know so that we prepare the rooms. >> > >> >> It would be nice if we have a few items we collaborate to addess. >> One possible item I'm planning to contribute to is to help Marcus/help >> our selves by reviewing some pending fixes in the bug tracker. >> >> Noury >> -- >> http://twitter.com/#!/NouryBouraqadi >> >> >> >> >> >> > > > -- > Mariano > http://marianopeck.wordpress.com > > -- Mariano http://marianopeck.wordpress.com

Dec. 12, 2011

Re: [Pharo-users] [Pharo-project] Sprint friday 16 @ lille

by Mariano Martinez Peck

so you changed you mind ;) we go by car or by train? Luc is finally coming also? cheers On Mon, Dec 12, 2011 at 10:51 PM, Noury Bouraqadi <bouraqadi(a)gmail.com>wrote: > Hi, > > On 9 dÃ©c. 2011, at 09:06, StÃ©phane Ducasse wrote: > > > Hi guys > > > > I'm not sure that my message passed in the mailing-list. > > We will organize a sprint new friday and everybody is welcome. > > Cool. I'll be there! > > > Just let us know so that we prepare the rooms. > > > > It would be nice if we have a few items we collaborate to addess. > One possible item I'm planning to contribute to is to help Marcus/help our > selves by reviewing some pending fixes in the bug tracker. > > Noury > -- > http://twitter.com/#!/NouryBouraqadi > > > > > > -- Mariano http://marianopeck.wordpress.com

Dec. 12, 2011

Fwd: [Pharo-project] Videos ESUG 2010 on Youtube

by Marcus Denker

Begin forwarded message: > From: Marcus Denker <marcus.denker(a)inria.fr> > Subject: [Pharo-project] Videos ESUG 2010 on Youtube > > > Now *complete* 54 videos, 35 hours play time. > > http://www.youtube.com/playlist?list=PL431285A978F581BB > -- Marcus Denker -- http://marcusdenker.de

Dec. 12, 2011