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

[Pharo-project] Issue 3364 in pharo: Behavior implements #addTraitSelector:withMethod: identically to the version it would obtain from one of its traits
by pharo＠googlecode.com Dec. 2, 2010

Dec. 2, 2010

Status: Verified Owner: adrian.lienhard Labels: Milestone-1.2 New issue 3364 by adrian.lienhard: Behavior implements #addTraitSelector:withMethod: identically to the version it would obtain from one of its traits http://code.google.com/p/pharo/issues/detail?id=3364 The changeset just removes this method: Behavior removeSelector: #addTraitSelector:withMethod: Attachments: RemoveDuplicatedMethodFromTrait.1.cs 154 bytes

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[Pharo-project] Issue 3365 in pharo: TextEditorTest fails because of editor changes
by pharo＠googlecode.com Dec. 2, 2010

Dec. 2, 2010

Status: Accepted Owner: aplantec Labels: Milestone-1.2 New issue 3365 by aplantec: TextEditorTest fails because of editor changes http://code.google.com/p/pharo/issues/detail?id=3365 3 test are failing now because the paragraph is no more stored in the editor but got from the associated morph.

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Re: [Pharo-project] Issue 3267 in pharo: MultiNewParagraphWithSelectionColor depracted
by pharo＠googlecode.com Dec. 2, 2010

Dec. 2, 2010

Updates: Status: Invalid Comment #4 on issue 3267 by marcus.denker: MultiNewParagraphWithSelectionColor depracted http://code.google.com/p/pharo/issues/detail?id=3267 (No comment was entered for this change.)

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[Pharo-project] Using Pharo from the command-line
by Stefan Marr Dec. 2, 2010

Dec. 2, 2010

Hello: I just try to get started with Pharo to experiment with some benchmarks and would be grateful for some basic hints, since the documentation on pharo-project.org is not to excessive. As far as I read in the documentation of the language shootout[1], I will need the OSProcess package. How can I load this package into the image downloaded from p-p.org? My second problem is to execute code from the command line. I tried a simple example file $ cat test.sq Transcript open; cr; show: 'Hello, world'. $ Squeak\ 4.2.1beta1U.app/Contents/MacOS/Squeak\ VM\ Opt pharo1.0-10418-BETAdev09.08.3.image test.sq But this only leads to a debugger popping up in installSourceFile saying "No content to install". Looks like aStream is nil which should have the data loaded from file:test.sq Any pointers to documentation which might discusses command line related features are very welcome. I actually just need a way to choose a benchmark to be executed from the commandline. The actual code could already be in the image. Many thanks and best regards Stefan [1] http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=squeak&la… -- Stefan Marr Software Languages Lab Former Programming Technology Lab Vrije Universiteit Brussel Pleinlaan 2 / B-1050 Brussels / Belgium http://prog.vub.ac.be/~smarr Phone: +32 2 629 3956 Fax: +32 2 629 3525 -- Stefan Marr Software Languages Lab Former Programming Technology Lab Vrije Universiteit Brussel Pleinlaan 2 / B-1050 Brussels / Belgium http://prog.vub.ac.be/~smarr Phone: +32 2 629 3956 Fax: +32 2 629 3525

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[Pharo-project] is there an easy way to know the SmallInteger instances?
by Mariano Martinez Peck Dec. 2, 2010

Dec. 2, 2010

If I do SmallInteger alIInstances I get an empty array, and of course, with SmallInteger instanceCount I get zero. Now, I can understand that from the VM point of view, but for the final user, this should be polymorphic. For example, for instanceCount, I would like to know all the "variable slots" that has a 1 in the last bit. Is this already possible? if true, which message? if not, should I hack in the vm and code a primitive that does this? And the same for allInstances, if I can inspect 5, I should be also to inspect SmallInteger allInstances, and SmallInteger allInstances first, etc.... thanks Mariano

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[Pharo-project] FFI question. Is it possible to unload loaded external library
by Denis Kudriashov Dec. 2, 2010

Dec. 2, 2010

Hello, I need implement remote updating some dll's for running pharo application. This dll's used by FFI. I want done this by unloading dll from VM. Then loading new updated dll. And then continue app execution. Is it possible? Or only way is to restart pharo?

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Re: [Pharo-project] Changesets with LF/CRLF instead of CR?
by StÃ©phane Ducasse Dec. 1, 2010

Dec. 1, 2010

ok stefan as a general principle, I'm open to change for the better :) Now how much? - cost to do - cost of impact - who is helping to fix bugs after - is community happy? For lot of changes we (me myself and I and a couple of others) take the cost and assume the risks. Now you see my question arriving? Are you in charge, committed (SCRUM reference to the pig and chicken story) ? Stef > Hi Eliot: > > On 29 Nov 2010, at 23:31, Eliot Miranda wrote: > >> Is there an easy way to have change sets filed out with LF instead of the horribly incompatible CR? >> >> Are conversion scipts of help? I depend on the following: > Turns out, an error that lead me to believe there are problems with LF changesets had another cause. (a missing line end at the end of the file) > > So, now I guess, the only thing to do to avoiding the CR line endings in change sets is to convince you guys that CR is not the standard line ending on OS X, and completely outdated in general. > > I would like to suggest to change the behavior of the line-end guessing in MultiByteFileStream to that end. > > Thanks > Stefan > > -- > Stefan Marr > Software Languages Lab > Vrije Universiteit Brussel > Pleinlaan 2 / B-1050 Brussels / Belgium > http://soft.vub.ac.be/~smarr > Phone: +32 2 629 2974 > Fax: +32 2 629 3525 > >

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[Pharo-project] [OSProcess] Proposal for Pharo 1.2 compatibility
by Cyrille Delaunay Dec. 1, 2010

Dec. 1, 2010

Hello, I would suggest to replace the two methods -------------------------------------------------------------- OSPRocess class >> platformName "After Squeak version 3.6, #platformName was moved to SmalltalkImage " ^ ((Smalltalk classNamed: 'SmalltalkImage') ifNil: [^ Smalltalk platformName]) current platformName OSPRocess class >> osVersion "After Squeak version 3.6, #osVersion was moved to SmalltalkImage " ^ ((Smalltalk classNamed: 'SmalltalkImage') ifNil: [^ Smalltalk osVersion]) current osVersion -------------------------------------------------------------- by: ------------------------------------------------------------- OSProcess class >> platformName ^ ((Smalltalk classNamed: 'OSPlatform') ifNil: [ (Smalltalk classNamed: 'SmalltalkImage') current ifNil: [^ Smalltalk platformName]]) platformName OSProcess class >> osVersion ^ ((Smalltalk classNamed: 'OSPlatform') ifNil: [ (Smalltalk classNamed: 'SmalltalkImage') current ifNil: [^ Smalltalk osVersion]]) osVersion ------------------------------------------------------------ to avoid deprecation messages when using it in Pharo 1.2. Does it looks good? I'm not able to publish on the squeaksource repository

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[Pharo-project] Ideas for CompiledMethod proxies?
by Mariano Martinez Peck Nov. 30, 2010

Nov. 30, 2010

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

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[Pharo-project] Problem with #garbageCollect and -memory parameter
by Mariano Martinez Peck Nov. 30, 2010

Nov. 30, 2010

Hi folks. I am using the standard SqueakVM 4.2.5beta1U. If I run normaly the VM with a normal Pharo image and I print Smalltalk garbageCollect -> I get something like 492130460 Now...if I run the vm with the parameter -memory 1500m and I then print Smalltalk garbageCollect -> I get a NEGATIVE number like: -619402660 I guess there is a problem in somewhere like ObjectMemory >> bytesLeft: but I don't know... Anyway, the problem in my case is in SmalltalkImage: okayToProceedEvenIfSpaceIsLow "Return true if either there is enough memory to do so safely or if the user gives permission after being given fair warning." self garbageCollectMost > self lowSpaceThreshold ifTrue: [^ true]. "quick" self garbageCollect > self lowSpaceThreshold ifTrue: [^ true]. "work harder" ^ self confirm: 'WARNING: There is not enough space to start the low space watcher. If you proceed, you will not be warned again, and the system may run out of memory and crash. If you do proceed, you can start the low space notifier when more space becomes available simply by opening and then closing a debugger (e.g., by hitting Cmd-period.) Do you want to proceed?' Since both of the first answers false because, of course garbageCollectMost and garbageCollect are negative.... then I have that poup all the time. To fix this I have to posibilities: 1) Just patch this particular method to: self garbageCollectMost. self primBytesLeft > self lowSpaceThreshold ifTrue: [^ true]. "quick" self garbageCollect self primBytesLeft > self lowSpaceThreshold ifTrue: [^ true]. "work harder" Notice that primBytesLeft is answering correct. Wait..I don't know if correct, but at least possitive: 5691396 I think this is possitive because the primitive is not receiving a parameter, and thus, Interpreter >> primitiveBytesLeft evaluates the first part of the method, which just does self sizeOfFree: freeBlock , and not the second part where it does self bytesLeft: aBool. 2) understand why it is negative and fix it from the VM side (I have no idea how to do this). Now, in addition, I wonder if there may be other places broken because of this....I am having some crashed and I don't know why :( Thanks in advance, Mariano

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