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Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Nicolas Cellier

I only had a look in Pharo 1.4 It sounds like a subtle bug related to introduction of SubclassResponsibility in Pharo. If you revert Object>>subclassResponsibility to its previous version you get a more reliable error. Nicolas 2011/12/1 Larry White <ljw1001(a)gmail.com>: > I was able to replicate with a clean version of the Seaside 3.0.6 One Click > download by executing Stream #basicNew in a workspace. Â It did work a couple > times ok using "do it" from the menu, but seems to lock pretty regularly > using print or explore keyboard shortcuts. > > thanks. > > > > On Thu, Dec 1, 2011 at 1:33 PM, Larry White <ljw1001(a)gmail.com> wrote: >> >> I can do it with control-P (print) in the Workspace. Â I just did it with a >> single try, though sometimes it takes more than one. Â Speed isn't an issue, >> I can wait 10 minutes and see it happen sometimes.. >> >> I have to take a break now, but when I get a few minutes, I'll try again >> with a fresh install of the latest Seaside one-click for the mac. >> >> thanks. >> >> On Thu, Dec 1, 2011 at 1:20 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu> >> wrote: >>> >>> I just tried to hang 1.1.1 (using a traditional linux vm) and a 1.4 image >>> with a Cog vm (also linux).Â No problems, but I do have questions that might >>> be important to others trying to reproduce it: >>> >>> (1) how fast do you do this? >>> (2) do you inspect the instances, or just let them get gc'd immediately? >>> >>> Bill >>> >>> >>> >>> ________________________________ >>> From: pharo-project-bounces(a)lists.gforge.inria.fr >>> [pharo-project-bounces(a)lists.gforge.inria.fr] on behalf of Larry White >>> [ljw1001(a)gmail.com] >>> Sent: Thursday, December 01, 2011 12:56 PM >>> To: Pharo-project(a)lists.gforge.inria.fr >>> Subject: Re: [Pharo-project] VM freezes sending #basicNew to Stream >>> subclass >>> >>> I can do it with >>> >>> Stream basicNew. >>> >>> but I have to invoke it twice. The first time it works ok. >>> >>> >>> >>> On Thu, Dec 1, 2011 at 12:48 PM, StÃ©phane Ducasse >>> <stephane.ducasse(a)inria.fr> wrote: >>>> >>>> gary >>>> >>>> can you post the smallest code that makes the system hangs? >>>> >>>> Stef >>>> >>>> On Dec 1, 2011, at 4:48 PM, Larry White wrote: >>>> >>>> > Hi, >>>> > >>>> > Throwing this out there because it may be a bug. >>>> > >>>> > I'm running the Seaside one-click install on OS X Lion. >>>> > Pharo1.3 >>>> > Latest update: #13302 >>>> > >>>> > I can reliably cause my VM to freeze up and need to Force-Quit it from >>>> > the OS. >>>> > >>>> > I'm implementing (copying) the probability logic from the blue book. >>>> > When I tried to create an instance of the Binomial class, the system hung. I >>>> > can replicate the problem by sending the message #basicNew to >>>> > ProbabilityDistribution. ProbabilityDistribution is a direct subclass of >>>> > Stream and I haven't overridden or modified #basicNew. >>>> > >>>> > What's happening is that it fails in the BlockClosure [anObject doit], >>>> > but only when I instantiate a member of this particular class hierarchy. In >>>> > the probability classes, a #doIt in a Workspace hits the line "self suspend" >>>> > in the #terminate method of Process and the VM hangs there. >>>> > >>>> > I believe they had ProbabilityDistribution subclass from Stream >>>> > because sampling from a distribution is like reading from a Stream, but I >>>> > don't think any there's any actual shared code, so I switched the superclass >>>> > of ProbabilityDistribution to Object and the code works fine now. >>>> > >>>> > Thanks. >>>> > >>>> > Larry >>>> >>>> >>> >> >

Dec. 1, 2011

[Pharo-project] SystemTracer

by StÃ©phane Ducasse

Hi guys I made sure that SystemTracer is not invoking deprecated method in 1.4 Now when I execute SystemTracer2 writeImage: 'clone.image' the process finishes, the image I obtain start but the UI is not working. Benjamin was it working when you tried with igor? Stef

Dec. 1, 2011

Re: [Pharo-project] Call for your input on questions you ask yourselves during merge

by StÃ©phane Ducasse

thanks marcus. I will post the list I have once more people reply :) Stef On Dec 1, 2011, at 9:45 PM, Marcus Denker wrote: > > On Nov 29, 2011, at 4:25 PM, StÃ©phane Ducasse wrote: > >> Hi guys >> >> We are writing some articles on the work of veronica to support merging >> activities. We need your input great smalltalk community :) >> What are the questions that you ask yourselves when you are/want to merge >> some code in your project? >> We would like to do a compilation of questions and also evaluate how the >> solution of veronica solves them or part of them. >> >> Here are some typical questions we asked ourselves. >> - What other changes did this change require? >> - Can I integrate this change right now? >> - How large it is? >> - Who made it? >> - Is it still valid (when I'm working on an old change)? >> - Is this change impacted by a change that happened in another >> branch of my software? >> > > - Which Packages are touched by the change? > - Are the tests green after? > - How stable is the code that is changed by this patch (that is: Was the code changed > a lot recently?) > - Is the changed code actually used? How is is used? --> in the sense of is that code > "hot", e.g. is is used to render the current desktop? Is is needed when starting the image? > Is is executed when merging changes? > - What is the status of the commiter? Did he commit a lot good code or did his/her past > changes lead to corrections all the time? > - are there other bugs reported that are related to the change? > - are there failing tests related to this change? > > Marcus > > > -- > Marcus Denker -- http://marcusdenker.de > >

Dec. 1, 2011

Re: [Pharo-project] Call for your input on questions you ask yourselves during merge

by Marcus Denker

On Nov 29, 2011, at 4:25 PM, StÃ©phane Ducasse wrote: > Hi guys > > We are writing some articles on the work of veronica to support merging > activities. We need your input great smalltalk community :) > What are the questions that you ask yourselves when you are/want to merge > some code in your project? > We would like to do a compilation of questions and also evaluate how the > solution of veronica solves them or part of them. > > Here are some typical questions we asked ourselves. > - What other changes did this change require? > - Can I integrate this change right now? > - How large it is? > - Who made it? > - Is it still valid (when I'm working on an old change)? > - Is this change impacted by a change that happened in another > branch of my software? > - Which Packages are touched by the change? - Are the tests green after? - How stable is the code that is changed by this patch (that is: Was the code changed a lot recently?) - Is the changed code actually used? How is is used? --> in the sense of is that code "hot", e.g. is is used to render the current desktop? Is is needed when starting the image? Is is executed when merging changes? - What is the status of the commiter? Did he commit a lot good code or did his/her past changes lead to corrections all the time? - are there other bugs reported that are related to the change? - are there failing tests related to this change? Marcus -- Marcus Denker -- http://marcusdenker.de

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Larry White

I was able to replicate with a clean version of the Seaside 3.0.6 One Click download by executing Stream #basicNew in a workspace. It did work a couple times ok using "do it" from the menu, but seems to lock pretty regularly using print or explore keyboard shortcuts. thanks. On Thu, Dec 1, 2011 at 1:33 PM, Larry White <ljw1001(a)gmail.com> wrote: > I can do it with control-P (print) in the Workspace. I just did it with a > single try, though sometimes it takes more than one. Speed isn't an issue, > I can wait 10 minutes and see it happen sometimes.. > > I have to take a break now, but when I get a few minutes, I'll try again > with a fresh install of the latest Seaside one-click for the mac. > > thanks. > > On Thu, Dec 1, 2011 at 1:20 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu>wrote: > >> I just tried to hang 1.1.1 (using a traditional linux vm) and a 1.4 >> image with a Cog vm (also linux). No problems, but I do have questions >> that might be important to others trying to reproduce it: >> >> (1) how fast do you do this? >> (2) do you inspect the instances, or just let them get gc'd immediately? >> >> Bill >> >> >> >> ------------------------------ >> *From:* pharo-project-bounces(a)lists.gforge.inria.fr [ >> pharo-project-bounces(a)lists.gforge.inria.fr] on behalf of Larry White [ >> ljw1001(a)gmail.com] >> *Sent:* Thursday, December 01, 2011 12:56 PM >> *To:* Pharo-project(a)lists.gforge.inria.fr >> *Subject:* Re: [Pharo-project] VM freezes sending #basicNew to Stream >> subclass >> >> I can do it with >> >> Stream basicNew. >> >> but I have to invoke it twice. The first time it works ok. >> >> >> >> On Thu, Dec 1, 2011 at 12:48 PM, StÃ©phane Ducasse < >> stephane.ducasse(a)inria.fr> wrote: >> >>> gary >>> >>> can you post the smallest code that makes the system hangs? >>> >>> Stef >>> >>> On Dec 1, 2011, at 4:48 PM, Larry White wrote: >>> >>> > Hi, >>> > >>> > Throwing this out there because it may be a bug. >>> > >>> > I'm running the Seaside one-click install on OS X Lion. >>> > Pharo1.3 >>> > Latest update: #13302 >>> > >>> > I can reliably cause my VM to freeze up and need to Force-Quit it from >>> the OS. >>> > >>> > I'm implementing (copying) the probability logic from the blue book. >>> When I tried to create an instance of the Binomial class, the system hung. >>> I can replicate the problem by sending the message #basicNew to >>> ProbabilityDistribution. ProbabilityDistribution is a direct subclass of >>> Stream and I haven't overridden or modified #basicNew. >>> > >>> > What's happening is that it fails in the BlockClosure [anObject doit], >>> but only when I instantiate a member of this particular class hierarchy. In >>> the probability classes, a #doIt in a Workspace hits the line "self >>> suspend" in the #terminate method of Process and the VM hangs there. >>> > >>> > I believe they had ProbabilityDistribution subclass from Stream >>> because sampling from a distribution is like reading from a Stream, but I >>> don't think any there's any actual shared code, so I switched the >>> superclass of ProbabilityDistribution to Object and the code works fine now. >>> > >>> > Thanks. >>> > >>> > Larry >>> >>> >>> >> >

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Larry White

I can do it with control-P (print) in the Workspace. I just did it with a single try, though sometimes it takes more than one. Speed isn't an issue, I can wait 10 minutes and see it happen sometimes.. I have to take a break now, but when I get a few minutes, I'll try again with a fresh install of the latest Seaside one-click for the mac. thanks. On Thu, Dec 1, 2011 at 1:20 PM, Schwab,Wilhelm K <bschwab(a)anest.ufl.edu>wrote: > I just tried to hang 1.1.1 (using a traditional linux vm) and a 1.4 > image with a Cog vm (also linux). No problems, but I do have questions > that might be important to others trying to reproduce it: > > (1) how fast do you do this? > (2) do you inspect the instances, or just let them get gc'd immediately? > > Bill > > > > ------------------------------ > *From:* pharo-project-bounces(a)lists.gforge.inria.fr [ > pharo-project-bounces(a)lists.gforge.inria.fr] on behalf of Larry White [ > ljw1001(a)gmail.com] > *Sent:* Thursday, December 01, 2011 12:56 PM > *To:* Pharo-project(a)lists.gforge.inria.fr > *Subject:* Re: [Pharo-project] VM freezes sending #basicNew to Stream > subclass > > I can do it with > > Stream basicNew. > > but I have to invoke it twice. The first time it works ok. > > > > On Thu, Dec 1, 2011 at 12:48 PM, StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr> wrote: > >> gary >> >> can you post the smallest code that makes the system hangs? >> >> Stef >> >> On Dec 1, 2011, at 4:48 PM, Larry White wrote: >> >> > Hi, >> > >> > Throwing this out there because it may be a bug. >> > >> > I'm running the Seaside one-click install on OS X Lion. >> > Pharo1.3 >> > Latest update: #13302 >> > >> > I can reliably cause my VM to freeze up and need to Force-Quit it from >> the OS. >> > >> > I'm implementing (copying) the probability logic from the blue book. >> When I tried to create an instance of the Binomial class, the system hung. >> I can replicate the problem by sending the message #basicNew to >> ProbabilityDistribution. ProbabilityDistribution is a direct subclass of >> Stream and I haven't overridden or modified #basicNew. >> > >> > What's happening is that it fails in the BlockClosure [anObject doit], >> but only when I instantiate a member of this particular class hierarchy. In >> the probability classes, a #doIt in a Workspace hits the line "self >> suspend" in the #terminate method of Process and the VM hangs there. >> > >> > I believe they had ProbabilityDistribution subclass from Stream because >> sampling from a distribution is like reading from a Stream, but I don't >> think any there's any actual shared code, so I switched the superclass of >> ProbabilityDistribution to Object and the code works fine now. >> > >> > Thanks. >> > >> > Larry >> >> >> >

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Schwab,Wilhelm K

I just tried to hang 1.1.1 (using a traditional linux vm) and a 1.4 image with a Cog vm (also linux). No problems, but I do have questions that might be important to others trying to reproduce it: (1) how fast do you do this? (2) do you inspect the instances, or just let them get gc'd immediately? Bill ________________________________ From: pharo-project-bounces(a)lists.gforge.inria.fr [pharo-project-bounces(a)lists.gforge.inria.fr] on behalf of Larry White [ljw1001(a)gmail.com] Sent: Thursday, December 01, 2011 12:56 PM To: Pharo-project(a)lists.gforge.inria.fr Subject: Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass I can do it with Stream basicNew. but I have to invoke it twice. The first time it works ok. On Thu, Dec 1, 2011 at 12:48 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr<mailto:stephane.ducasse@inria.fr>> wrote: gary can you post the smallest code that makes the system hangs? Stef On Dec 1, 2011, at 4:48 PM, Larry White wrote: > Hi, > > Throwing this out there because it may be a bug. > > I'm running the Seaside one-click install on OS X Lion. > Pharo1.3 > Latest update: #13302 > > I can reliably cause my VM to freeze up and need to Force-Quit it from the OS. > > I'm implementing (copying) the probability logic from the blue book. When I tried to create an instance of the Binomial class, the system hung. I can replicate the problem by sending the message #basicNew to ProbabilityDistribution. ProbabilityDistribution is a direct subclass of Stream and I haven't overridden or modified #basicNew. > > What's happening is that it fails in the BlockClosure [anObject doit], but only when I instantiate a member of this particular class hierarchy. In the probability classes, a #doIt in a Workspace hits the line "self suspend" in the #terminate method of Process and the VM hangs there. > > I believe they had ProbabilityDistribution subclass from Stream because sampling from a distribution is like reading from a Stream, but I don't think any there's any actual shared code, so I switched the superclass of ProbabilityDistribution to Object and the code works fine now. > > Thanks. > > Larry

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by Larry White

I can do it with Stream basicNew. but I have to invoke it twice. The first time it works ok. On Thu, Dec 1, 2011 at 12:48 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > gary > > can you post the smallest code that makes the system hangs? > > Stef > > On Dec 1, 2011, at 4:48 PM, Larry White wrote: > > > Hi, > > > > Throwing this out there because it may be a bug. > > > > I'm running the Seaside one-click install on OS X Lion. > > Pharo1.3 > > Latest update: #13302 > > > > I can reliably cause my VM to freeze up and need to Force-Quit it from > the OS. > > > > I'm implementing (copying) the probability logic from the blue book. > When I tried to create an instance of the Binomial class, the system hung. > I can replicate the problem by sending the message #basicNew to > ProbabilityDistribution. ProbabilityDistribution is a direct subclass of > Stream and I haven't overridden or modified #basicNew. > > > > What's happening is that it fails in the BlockClosure [anObject doit], > but only when I instantiate a member of this particular class hierarchy. In > the probability classes, a #doIt in a Workspace hits the line "self > suspend" in the #terminate method of Process and the VM hangs there. > > > > I believe they had ProbabilityDistribution subclass from Stream because > sampling from a distribution is like reading from a Stream, but I don't > think any there's any actual shared code, so I switched the superclass of > ProbabilityDistribution to Object and the code works fine now. > > > > Thanks. > > > > Larry > > >

Dec. 1, 2011

Re: [Pharo-project] Startup Preferences

by StÃ©phane Ducasse

me too. Stef On Dec 1, 2011, at 6:38 PM, Camillo Bruni wrote: > Yeah I would really love to see this. > > maybe with a fixed lookup chain > > 1. Settings from the Image directory/startup.st > 2. Settings from ~/.pharo/$VERSION/startup.st > 3. Settings from ~/.pharo/startup.st > > cami >

Dec. 1, 2011

Re: [Pharo-project] VM freezes sending #basicNew to Stream subclass

by StÃ©phane Ducasse

gary can you post the smallest code that makes the system hangs? Stef On Dec 1, 2011, at 4:48 PM, Larry White wrote: > Hi, > > Throwing this out there because it may be a bug. > > I'm running the Seaside one-click install on OS X Lion. > Pharo1.3 > Latest update: #13302 > > I can reliably cause my VM to freeze up and need to Force-Quit it from the OS. > > I'm implementing (copying) the probability logic from the blue book. When I tried to create an instance of the Binomial class, the system hung. I can replicate the problem by sending the message #basicNew to ProbabilityDistribution. ProbabilityDistribution is a direct subclass of Stream and I haven't overridden or modified #basicNew. > > What's happening is that it fails in the BlockClosure [anObject doit], but only when I instantiate a member of this particular class hierarchy. In the probability classes, a #doIt in a Workspace hits the line "self suspend" in the #terminate method of Process and the VM hangs there. > > I believe they had ProbabilityDistribution subclass from Stream because sampling from a distribution is like reading from a Stream, but I don't think any there's any actual shared code, so I switched the superclass of ProbabilityDistribution to Object and the code works fine now. > > Thanks. > > Larry

Dec. 1, 2011