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

Re: [Pharo-project] Loading Alien on Pharo 1.1.1

by Eliot Miranda

Hi Esteban, On Fri, Nov 19, 2010 at 10:23 AM, Esteban Lorenzano <estebanlm(a)gmail.com>wrote: > still the same error... > I can press "proceed", but I'm scared to do that :) > as long as you don't shorten the specialObjectsArray you should be OK. > > Cheers, > Esteban > > On 2010-11-19 11:12:17 -0300, Luc Fabresse <luc.fabresse(a)gmail.com> said: > > >> Hi All, >> >> To load Alien I use: >> >> Gofer new >> squeaksource: 'Alien'; >> package: 'ConfigurationOfAlien'; >> load. >> (Smalltalk at: #ConfigurationOfAlien project version: 'Pharo 1.1') load >> >> >> Cheers, >> >> #Luc >> >> >> 2010/11/18 Esteban Lorenzano <estebanlm(a)gmail.com> >> >> Hi, >>> Does anybody knows if Alien should work with pharo 1.1.1 (non cog vm)? >>> With ConfigurationOfAlien, I'm getting the "invalid array size" prereq >>> violated. >>> >>> Cheers, >>> Esteban >>> >>> >>> >>> >>> >> >> <span class=3D"Apple-style-span" style=3D"font-family: arial, sans-serif; >> f= >> ont-size: 14px; border-collapse: collapse; ">Hi >> All,<div><br></div><div>=A0= >> To load =A0Alien I use:</div><div><br></div><div>=A0=A0Gofer >> new</div><div>= >> <span style=3D"white-space: pre-wrap; "> </span>squeaksource: >> 'Alien&#3= >> 9;;</div> >> <div><span style=3D"white-space: pre-wrap; "> </span>package: >> 'Configur= >> ationOfAlien';</div><div><span style=3D"white-space: pre-wrap; "> >> </spa= >> n>load.</div><div><span style=3D"white-space: pre-wrap; "> >> </span></div><di= >> v> >> (Smalltalk at: #ConfigurationOfAlien project version: 'Pharo 1.1') >> = >> load</div><div><br></div><div>=A0</div><div>=A0Cheers,</div><div><br >> clear= >> =3D"all">#Luc</div></span> >> <br><br><div class=3D"gmail_quote">2010/11/18 Esteban Lorenzano <span dir= >> =3D"ltr"><<a href=3D"mailto:estebanlm@gmail.com">estebanlm(a)gmail.com >> </a>= >> > ></span><br><blockquote > >> >> class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex= >> ;border-left:1px #ccc solid;padding-left:1ex;"> >> Hi,<br> >> Does anybody knows if Alien should work with pharo 1.1.1 (non cog vm)?<br> >> With ConfigurationOfAlien, I'm getting the "invalid array >> size&quo= >> t; prereq violated.<br> >> <br> >> Cheers,<br><font color=3D"#888888"> >> Esteban<br> >> <br> >> <br> >> <br> >> </font></blockquote></div><br> >> > > > > >

Nov. 19, 2010

Re: [Pharo-project] Ideas for CompiledMethod proxies?

by Eliot Miranda

Hi Mariano, it strikes me that the class and selector are implicit in method dictionaries. So if you use a zero-sized object to replace a method (one word in memory if you make it an instance of a compact class) you can find its class and selector by searching all method dictionaries in the class hierarchy. In an image with approximately 90,000 methods on a 2.66GHz Core i7 it takes Cog 15 milliseconds on average to locate a method in the hierarchy: | cms | cms := CompiledMethod allInstances. cms := (1 to: cms size by: 100) collect: [:i| cms at: i]. { Time millisecondsToRun: [cms do: [:cm| [:exit| ProtoObject withAllSubclasses do: [:c| c selectorsAndMethodsDo: [:s :m| m == cm ifTrue: [exit value]]]] valueWithExit]]. cms size } #(13371 917) 13371 / 917.0 14.58124318429662 CompiledMethod instanceCount 91696 So one thing might be to use a zero-sized object. Of course you could use a one instance variable object whose instance variable was the class and then things would be /much/ faster, with only one method dictionary to search. Or perhaps you could use a 4-byte byte array and keep the identity hash of the class and the identity hash of the selector in two 16-bit values in the 4-byte array, but this wouldn't get you anything over and above the one instance variable object pointing to the class. However, if you are talking abut optimizing a closed world then this does hold water. One thing you can do if you *really* want to save space is eliminate symbols, replacing them by integers. The lookup machinery should be able to deal with a SmallInteger selector, and if it doesn't it has a bug. This is a space saving technique I first heard about in the ActiveBook which used my BrouHaHa VM and ParcPlace's Smalltalk-80 v2.3 back in the 80's to produce an early tablet computer. So the idea is to number classes and selectors and use the selector numbers to replace symbols. Now the byte array makes sense because if you have < 64k symbols and < 64k classes you have the class and the selector directly. If you were clever you could put the selector numbering in the compiler and keep the symbol table externally in a file, mapping selector number to symbol there-in. Obviously the tricky thing is in eliminating or implementing asSymbol in perform: usage. Sometimes you see horror show code like self perform: (self opPrefix, self opSuffix) asSymbol which makes it /really/ hard to find implementors and senders (and IMO people who write this kind of thing should be shot, and IIRC there is stuff like this in the change notification code, ARGH!!!). HTH Eliot On Fri, Nov 19, 2010 at 12:47 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Hi. I am developing kind of proxies for unused compiled methods. I want to > detect them, put a proxy instead of them, and swap them to disk. Then, in > case they are used, I put back the original ones. With this, I want to > realease memory. This is why I need the proxy objects to be as small as > possibles. > > Right now, I do something like this: > > aProxy := CompiledMethodProxyReferenceStreamWithFileName installOn: > ClassWith1Var selector: #foo. > > this will instantiate the proxy, do the ClassWith1Var methodAt: #foo put: > proxy, write the original compiledMethod that was in #foo into a file, > etc.... > > and then if I do "ClassWith1Var new foo", then using the #run:with:in I > load the file from disk and I put back the original method. To know WHICH > file I have to load, I have to store the fileName in the proxy object. > > In addition, if I DON'T execute the compiled method, but instead I send a > message, for example: > > (ClassWith1Var >> #foo) literals > > this has to do the same: load and put back the original compiled method. To > do this, I use the doesNotUnderstand:. > > This is easy to do if I store the fileName in the proxy instance. Right > now, I am using as fileName this: CLASS >> SELECTOR. For example, in this > case, the file would be named "ClassWith1Var >> #foo" > > Now.....with this solution, I need create an proxy instance for each > compiled method, and these instances have also another instance for the > filename. If I could use the same proxy instance for everybody, the amount > of memory released would be muuuuch more. So I thought that maybe from the > context I can "guess" the filename if I use conventions. > > For example, if you do "ClassWith1Var new foo" then in the #run:with:in I > receive all the information to KNOW that the fileName should be > "ClassWith1Var >> #foo". So, no problem here. > > But for the second case, suppose "(ClassWith1Var >> #foo) literals", I > don't see a way to know this. In this case, #literals is intercepted by the > doesNotUnderstand: of my proxy, and here I should load back the original > compiled method from disk. The problem is that I cannot know in which CLASS > and SELECTOR this proxy was put. The only way I know to do this, is to store > the class + selector in the proxy instance....but it is the same...I will > need an instance per compiled method. In such case is even easier to > directly store the fileName. > > Anyway, if someone has a solution or advice on this, I would be appreciated > that. I tried with thisContext, but it didn't help me. > > Thanks > > Mariano >

Nov. 19, 2010

Re: [Pharo-project] Issue 3272 in pharo: SelectorChooserMorph improving

by pharo＠googlecode.com

Comment #2 on issue 3272 by stephane.ducasse: SelectorChooserMorph improving http://code.google.com/p/pharo/issues/detail?id=3272 you are a machine :) Tx alain. I will integrate it soon.

Nov. 19, 2010

[Pharo-project] Ideas for CompiledMethod proxies?

by Mariano Martinez Peck

Hi. I am developing kind of proxies for unused compiled methods. I want to detect them, put a proxy instead of them, and swap them to disk. Then, in case they are used, I put back the original ones. With this, I want to realease memory. This is why I need the proxy objects to be as small as possibles. Right now, I do something like this: aProxy := CompiledMethodProxyReferenceStreamWithFileName installOn: ClassWith1Var selector: #foo. this will instantiate the proxy, do the ClassWith1Var methodAt: #foo put: proxy, write the original compiledMethod that was in #foo into a file, etc.... and then if I do "ClassWith1Var new foo", then using the #run:with:in I load the file from disk and I put back the original method. To know WHICH file I have to load, I have to store the fileName in the proxy object. In addition, if I DON'T execute the compiled method, but instead I send a message, for example: (ClassWith1Var >> #foo) literals this has to do the same: load and put back the original compiled method. To do this, I use the doesNotUnderstand:. This is easy to do if I store the fileName in the proxy instance. Right now, I am using as fileName this: CLASS >> SELECTOR. For example, in this case, the file would be named "ClassWith1Var >> #foo" Now.....with this solution, I need create an proxy instance for each compiled method, and these instances have also another instance for the filename. If I could use the same proxy instance for everybody, the amount of memory released would be muuuuch more. So I thought that maybe from the context I can "guess" the filename if I use conventions. For example, if you do "ClassWith1Var new foo" then in the #run:with:in I receive all the information to KNOW that the fileName should be "ClassWith1Var >> #foo". So, no problem here. But for the second case, suppose "(ClassWith1Var >> #foo) literals", I don't see a way to know this. In this case, #literals is intercepted by the doesNotUnderstand: of my proxy, and here I should load back the original compiled method from disk. The problem is that I cannot know in which CLASS and SELECTOR this proxy was put. The only way I know to do this, is to store the class + selector in the proxy instance....but it is the same...I will need an instance per compiled method. In such case is even easier to directly store the fileName. Anyway, if someone has a solution or advice on this, I would be appreciated that. I tried with thisContext, but it didn't help me. Thanks Mariano

Nov. 19, 2010

Re: [Pharo-project] Not happy with the issues feed from Google

by laurent laffont

+1 I like having issues on mailing-list as I can see what are the current activities. I would like the status in the subject (new / accepted / fixed /...) Cheers, Laurent On Thu, Nov 18, 2010 at 7:30 PM, Igor Stasenko <siguctua(a)gmail.com> wrote: > +1 > i don't read all mails, but at least by seeing in subject, i have an > idea that there are some activity around some issue. > > Also, in case if something attracts my attention, where i feel i can > be helpful, i can easy click on message and read it. > > In contrast, when all tracker activity is hidden inside issue tracker, > i have no chances to be aware who doing what and > what problem is attacked by people, unless i cc-ed to this issue as well. > 'Tracking' tracker by manually inspecting every single issue is time sink. > So, i think couple of extra lines in mails list worth it, because it > helps to people to be aware of what others do. > Of course i'm not happy with it as well. > Most messages are not quite informative , but its up to those who > posting them: make posts more elaborate , so others could understand > what is it about, where the problem etc etc. > > On 18 November 2010 19:33, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > wrote: > > +1 > > > > Sorry guys this is not optimal but after been against when I see it in > squeak, I'm in favor because it > > helps understanding what is happening. > > > > Sorry to be blunt but > > ****YOU**** yes you guys do not look at the bug or bug fixes in general. > > > > So often ME myself and I, have to send email about point from the archive > to the mailing-list. > > Often I do not even see that a bug has been posted and YES I have 5 rss > feed and I read them all. > > > > What is the last time you read the bug archives to see what is happening > there? > > So if you do not read the archive then how can you help? how can we make > sure that people are aware? > > > > What is the last time you look at the code of the fixes that got > integrated? Because if you do not read > > it how can we do quality control? So if I could I would send the diff of > all the package in the mailing-lits as this is done in squeak. > > > > Now what we can do to please some of you so far 4, we could create a > mailing-list where such mails would be sent. > > But let us see so far who is really against. > > > > Stef > > > > > >> Remember that most email client support filters. You can easily create > one. > >> > >> Cheers > >> > >> Mariano > > > > > > > > -- > Best regards, > Igor Stasenko AKA sig. > >

Nov. 19, 2010

Re: [Pharo-project] Not happy with the issues feed from Google

by Miguel CobÃ¡

El jue, 18-11-2010 a las 22:58 +0100, StÃ©phane Ducasse escribiÃ³: > We will create a separated mailing-list to see how it works. -1 I am in favor of having the messages to the pharo-project list, and don't want to subscribe to other new list. Here is where everyone is by default. More chances that the issue is watched by someone that can help. I just want either: - to only show the creation and closing of a ticket or - to show all interaction but with better formatting, like the squeak diffs. -- Miguel CobÃ¡ http://twitter.com/MiguelCobaMtz http://miguel.leugim.com.mx

Nov. 19, 2010

Re: [Pharo-project] [Pharo-users] could not search contents at http://book.pharo-project.org

by Mariano Martinez Peck

hello? I think this is important. We should be able to search. Cheers mariano On Wed, Oct 13, 2010 at 12:39 AM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Can someone take a look? how can we get the pier image? > > > On Sun, Oct 10, 2010 at 12:46 PM, Tudor Girba <tudor.girba(a)gmail.com>wrote: > >> Hi, >> >> Unfortunately, I cannot help much at this moment. The problem is due to a >> bug in Pier that crashes when there is a strange character in one of the >> pages. I believe this was fixed at some point, but I am not sure. Someone >> would have to update the Pier image. >> >> Cheers, >> Doru >> >> >> On 10 Oct 2010, at 11:53, Mariano Martinez Peck wrote: >> >> > Thanks! I can reproduce. >> > >> > Doru can you help us? >> > >> > Thanks >> > >> > Mariano >> > >> > On Thu, Oct 7, 2010 at 10:40 PM, Bernardo Ezequiel Contreras < >> vonbecmann(a)gmail.com> wrote: >> > Hi All, >> > >> > Description: >> > Could not search contents at http://book.pharo-project.org. >> > I would like to search some expression in the contents of the book. >> > >> > Steps to reproduce: >> > * goto to http://book.pharo-project.org >> > * click on main image >> > * add any string on search contents and press Enter >> > Actual Result: >> > Seaside Walkback >> > >> > Error: subscript is out of bounds: 8218 >> > >> > Expected Result: >> > a list of results that matches your input string >> > >> > >> > Thanks, >> > >> > >> > _______________________________________________ >> > Pharo-users mailing list >> > Pharo-users(a)lists.gforge.inria.fr >> > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> > >> > >> > _______________________________________________ >> > 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 >> >> "In a world where everything is moving ever faster, >> one might have better chances to win by moving slower." >> >> >> >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> > >

Nov. 19, 2010

Re: [Pharo-project] Loading Alien on Pharo 1.1.1

by Esteban Lorenzano

still the same error... I can press "proceed", but I'm scared to do that :) Cheers, Esteban On 2010-11-19 11:12:17 -0300, Luc Fabresse <luc.fabresse(a)gmail.com> said: > > Hi All, > > To load Alien I use: > > Gofer new > squeaksource: 'Alien'; > package: 'ConfigurationOfAlien'; > load. > (Smalltalk at: #ConfigurationOfAlien project version: 'Pharo 1.1') load > > > Cheers, > > #Luc > > > 2010/11/18 Esteban Lorenzano > <estebanlm(a)gmail.com> > >> Hi, >> Does anybody knows if Alien should work with pharo 1.1.1 (non cog vm)? >> With ConfigurationOfAlien, I'm getting the "invalid array size" prereq >> violated. >> >> Cheers, >> Esteban >> >> >> >> > > > <span class=3D"Apple-style-span" style=3D"font-family: arial, sans-serif; f= > ont-size: 14px; border-collapse: collapse; ">Hi All,<div><br></div><div>=A0= > To load =A0Alien I use:</div><div><br></div><div>=A0=A0Gofer new</div><div>= > <span style=3D"white-space: pre-wrap; "> </span>squeaksource: 'Alien&#3= > 9;;</div> > <div><span style=3D"white-space: pre-wrap; "> </span>package: 'Configur= > ationOfAlien';</div><div><span style=3D"white-space: pre-wrap; "> </spa= > n>load.</div><div><span style=3D"white-space: pre-wrap; "> </span></div><di= > v> > (Smalltalk at: #ConfigurationOfAlien project version: 'Pharo 1.1') = > load</div><div><br></div><div>=A0</div><div>=A0Cheers,</div><div><br clear= > =3D"all">#Luc</div></span> > <br><br><div class=3D"gmail_quote">2010/11/18 Esteban Lorenzano <span dir= > =3D"ltr"><<a > href=3D"mailto:estebanlm@gmail.com">estebanlm(a)gmail.com</a>= ></span><br><blockquote > > class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex= > ;border-left:1px #ccc solid;padding-left:1ex;"> > Hi,<br> > Does anybody knows if Alien should work with pharo 1.1.1 (non cog vm)?<br> > With ConfigurationOfAlien, I'm getting the "invalid array size&quo= > t; prereq violated.<br> > <br> > Cheers,<br><font color=3D"#888888"> > Esteban<br> > <br> > <br> > <br> > </font></blockquote></div><br>

Nov. 19, 2010

[Pharo-project] Issue 3273 in pharo: Wrongly defined MenuMorph>>embeddable

by pharo＠googlecode.com

Status: Accepted Owner: hilaire.fernandes Labels: Type-ReportDefect Milestone-1.2 Difficulty-Easy Importance-High New issue 3273 by hilaire.fernandes: Wrongly defined MenuMorph>>embeddable http://code.google.com/p/pharo/issues/detail?id=3273 In Pharo 1.1, MenuMorph>>embeddable is wrongly defined (typo error I guess). Use included changeset. Attachments: MenuMorph-embeddable.st 240 bytes

Nov. 19, 2010

Re: [Pharo-project] Issue 3225 in pharo: Fade image examples/methods give DNU

by pharo＠googlecode.com

Updates: Status: Fixed Comment #3 on issue 3225 by jbaptiste.arnaud: Fade image examples/methods give DNU http://code.google.com/p/pharo/issues/detail?id=3225 Graphics-Display Objects-Jb.43 in Inbox Attachments: Graphics-Display Objects-Jb.43.mcz 111 KB

Nov. 19, 2010