- Pharo-dev - lists.pharo.org

The Pharo Advantage: what is it for you?

by phil＠highoctane.be

Hello, As part of the defense of a budget and technology choices, what would you guys list as a key advantage of using Pharo for creating software solutions? My current stack is: Pharo 2.0 Seaside 3 (including Seaside-REST) Magritte 3 Twitter Bootstrap + a couple of data storage stuff (DBXTalk, Phriak, Voyage) + STOMP + Amber if needed I've been test driving the whole stack for a while and even if there are some quirks, it looks like good enough for what I want to achieve. Now, my question: what is the Pharo advantage you would put forward vs other choices (like LAMP, Java, Rails etc). I am aware of what those could be but I am more looking for what makes you tick when using the technology (like: "it is fun to work with", "no more Java for me, due to ...", "speeds dev time by ...", "not NSA-backdoor-enabled") This is the kind of thing we should have in stock for helping the Consortium members get buy in from people giving a yes on budgets. Thanks in advance for your help! (BTW, I am going to use this on monday morning for defending our position on a significant project). Phil

Aug. 23, 2013

Re: [Pharo-dev] Debugger recursion

by StÃ©phane Ducasse

HI jan we cannot see your code Ideally we would like to have a better handling of deep recursion but we are focusing on more important issues. Stef > Hi, > try this: > > > > This will start opening infinite number of debuggers, because of > A>>doesNotUnderstand: #halt. > Ok, so, if I replace /self halt/ with /Halt signal/, it will do the same, > but now because of A>>doesNotUnderstand: #inspector. > But in both cases, after successfully (before stack is full) interrupting > the recursion with Alt+., only the Process Browser is full of > "Morphic UI > process:MorphicUIManager>>openDebuggerOn:context:label:contents:fullView:" > no real debugger is visible... > > My question: How to debug code inside DNU method? Bug? Feature? > I know, the full stack issue can be solved by a watchdog, is it planned? And > it was discussed before here on mailinglist, but with different code > examples. > Or one can limit the total count of opened... > > > > ----- > Save The World! > -- > View this message in context: http://forum.world.st/Debugger-recursion-tp4704703.html > Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. >

Aug. 23, 2013

-= First Visualization Contest with Roassal =-

by Alexandre Bergel

Dear colleagues and friends, We are happy to announce the First Visualization Contest with Roassal. What can I win? - 150 euros, sponsored by ObjectProfile - a Ã¼ber-cool ObjectProfile T-shirt and some wonderful stickers - maximum publicity of your work - a nice award certificate, delivered during ESUG How can I win? - you have to produce a visualization with Roassal. You can use the Pharo, VisualWorks or VAST version of Roassal. Here is an example of what we expect http://bit.ly/sunburstDemo - making a video is mandatory. The video will weight the most in our decision. The video could be of any length and has to include your name and say that is was made (partly or completely) with Roassal. No need to talk, just show off! - making your code available and easy to install will help you get more points How can I submit? - send the links of your video and other material (if needed) to info(a)objectprofile.com Every email you will send to this email will be acknowledged. If you do not receive a 'Ok' from us, it means we haven't read it, in that case send your email again after a few days. - the deadline for submitting is September 4, 2013 Mini FAQ? - Is the object-profile team allowed to participate? No - Should my visualization or code be open source? No need for this, whatever license is fine. However your video should be made public. - How can I get more information? Just comment on the facebook https://www.facebook.com/ObjectProfile or using Twitter @ObjectProfile or send email to info(a)objectprofile.com - What I submit twice? Yes, no problem with that - How will judge the videos? both the esug community and the object profile team. The Esug community will have 30% of the final grade, object profile the remaining 70% -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://ObjectProfile.com http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Aug. 23, 2013

Debugger recursion

by jan.struz

Hi, try this: This will start opening infinite number of debuggers, because of A>>doesNotUnderstand: #halt. Ok, so, if I replace /self halt/ with /Halt signal/, it will do the same, but now because of A>>doesNotUnderstand: #inspector. But in both cases, after successfully (before stack is full) interrupting the recursion with Alt+., only the Process Browser is full of "Morphic UI process:MorphicUIManager>>openDebuggerOn:context:label:contents:fullView:" no real debugger is visible... My question: How to debug code inside DNU method? Bug? Feature? I know, the full stack issue can be solved by a watchdog, is it planned? And it was discussed before here on mailinglist, but with different code examples. Or one can limit the total count of opened... ----- Save The World! -- View this message in context: http://forum.world.st/Debugger-recursion-tp4704703.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Aug. 23, 2013

Re: [Pharo-dev] How do diagnose image locks up (cpu 100%) on save?

by Paul DeBruicker

So when you open the image I posted and in the workspace run RFBServer start. Smalltalk snapshot: true andQuit: false. Everything works fine? It doesn't go to 100% cpu use? -- View this message in context: http://forum.world.st/How-do-diagnose-image-locks-up-cpu-100-on-save-tp4704… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Aug. 23, 2013

Re: [Pharo-dev] How do diagnose image locks up (cpu 100%) on save?

by Igor Stasenko

looks quite healthy to me. image is idle doing nothing. On 22 August 2013 20:21, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > Paul DeBruicker wrote > > In this instance, that doesn't output anything. Specifically: > > > > > > $ ps -A | grep pharo > > 6001 pts/0 00:00:45 pharo > > $ kill -s SIGUSR1 6001 > > $ > > > Oh no wait. I'm an idiot. It spits out this in the terminal where the > pharo process is running: > > stack page bytes 4096 available headroom 3300 minimum unused headroom 3504 > > (SIGUSR1) > > SIGUSR1 Thu Aug 22 11:18:58 2013 > > > pharo VM version: 3.9-7 #1 Wed Mar 13 18:22:44 CET 2013 gcc 4.4.3 > Built from: NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: > a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 > With: NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: > a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 > Revision: git://gitorious.org/cogvm/blessed.git Commit: > 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 > By: > Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #14535 > Build host: Linux linux-ubuntu-10 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 > 11:26:59 UTC 2012 x86_64 GNU/Linux > plugin path: /home/paul/Downloads/pharo2.0/bin [default: > /home/paul/Downloads/pharo2.0/bin/] > > > C stack backtrace: > /home/paul/Downloads/pharo2.0/bin/pharo[0x80a0c0c] > /home/paul/Downloads/pharo2.0/bin/pharo[0x80a0e67] > [0xf7771410] > /home/paul/Downloads/pharo2.0/bin/vm-display-X11(+0x10d51)[0xf7765d51] > > /home/paul/Downloads/pharo2.0/bin/pharo(ioRelinquishProcessorForMicroseconds+0x14)[0x809e674] > /home/paul/Downloads/pharo2.0/bin/pharo[0x8081a0a] > [0xb7010d11] > /home/paul/Downloads/pharo2.0/bin/pharo(interpret+0x7a6)[0x8094f36] > /home/paul/Downloads/pharo2.0/bin/pharo(main+0x2b3)[0x80a18b3] > /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf7554935] > > > All Smalltalk process stacks (active first): > Process 0xb899e15c priority 10 > 0xfff24370 M ProcessorScheduler class>idleProcess 0xb7347240: a(n) > ProcessorScheduler class > 0xfff24390 I [] in ProcessorScheduler class>startUp 0xb7347240: a(n) > ProcessorScheduler class > 0xfff243b0 I [] in BlockClosure>newProcess 0xb899e080: a(n) BlockClosure > > Process 0xb856be14 priority 50 > 0xfff263b0 I WeakArray class>finalizationProcess 0xb7347450: a(n) WeakArray > class > 0xb85ce458 s [] in WeakArray class>restartFinalizationProcess > 0xb856bdb4 s [] in BlockClosure>newProcess > > Process 0xb85ced20 priority 80 > 0xfff29350 M Delay class>handleTimerEvent 0xb7349a3c: a(n) Delay class > 0xfff29370 I Delay class>runTimerEventLoop 0xb7349a3c: a(n) Delay class > 0xfff29390 I [] in Delay class>startTimerEventLoop 0xb7349a3c: a(n) Delay > class > 0xfff293b0 I [] in BlockClosure>newProcess 0xb85cec44: a(n) BlockClosure > > Process 0xb899dc7c priority 60 > 0xfff2a344 I InputEventFetcher>waitForInput 0xb7326fd8: a(n) > InputEventFetcher > 0xfff2a370 I InputEventFetcher>eventLoop 0xb7326fd8: a(n) InputEventFetcher > 0xfff2a390 I [] in InputEventFetcher>installEventLoop 0xb7326fd8: a(n) > InputEventFetcher > 0xfff2a3b0 I [] in BlockClosure>newProcess 0xb899dba0: a(n) BlockClosure > > Process 0xb899df90 priority 60 > 0xfff1c370 I SmalltalkImage>lowSpaceWatcher 0xb764de94: a(n) SmalltalkImage > 0xfff1c390 I [] in SmalltalkImage>installLowSpaceWatcher 0xb764de94: a(n) > SmalltalkImage > 0xfff1c3b0 I [] in BlockClosure>newProcess 0xb899deb4: a(n) BlockClosure > > Process 0xb74c5848 priority 40 > 0xfff282fc M [] in Delay>wait 0xb8ae610c: a(n) Delay > 0xfff2831c M BlockClosure>ifCurtailed: 0xb8ae6348: a(n) BlockClosure > 0xfff28338 M Delay>wait 0xb8ae610c: a(n) Delay > 0xfff28358 M WorldState>interCyclePause: 0xb7182620: a(n) WorldState > 0xfff28374 M WorldState>doOneCycleFor: 0xb7182620: a(n) WorldState > 0xfff28390 M PasteUpMorph>doOneCycle 0xb7173150: a(n) PasteUpMorph > 0xfff283b0 I [] in MorphicUIManager>? 0xb7186a5c: a(n) MorphicUIManager > 0xb74c57e8 s [] in BlockClosure>? > > Most recent primitives > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > relinquishProcessorForMicroseconds: > > stack page bytes 4096 available headroom 3300 minimum unused headroom 3504 > > (SIGUSR1) > > > > > > -- > View this message in context: > http://forum.world.st/How-do-diagnose-image-locks-up-cpu-100-on-save-tp4704… > Sent from the Pharo Smalltalk Developers mailing list archive at > Nabble.com. > > -- Best regards, Igor Stasenko.

Aug. 22, 2013

Re: [Pharo-dev] How do diagnose image locks up (cpu 100%) on save?

by Paul DeBruicker

Sven Van Caekenberghe-2 wrote > On 22 Aug 2013, at 19:34, Paul DeBruicker < > pdebruic@ > > wrote: > >> Hi - >> >> The plain Pharo 20619 + RFB image in my dropbox here: >> https://dl.dropboxusercontent.com/u/4460862/pharo2RFB.zip freezes when >> you save it while the RFB server is running. The freeze occurs in the >> #snapshotPrimitive. >> >> >> This is the VM info I'm using: >> >> 3.9-7 #1 Wed Mar 13 18:22:44 CET 2013 gcc 4.4.3 >> NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: >> a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 >> NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: >> a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 >> git://gitorious.org/cogvm/blessed.git Commit: >> 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 >> By: Esteban Lorenzano < > estebanlm@ > > Jenkins build #14535 >> Linux linux-ubuntu-10 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59 >> UTC 2012 x86_64 GNU/Linux >> plugin path: /home/paul/pharo/pharo2.0/bin [default: >> /home/paul/pharo/pharo2.0/bin/] >> >> >> How can I diagnose/fix what is going wrong? >> >> >> I'm reluctant to make it stop and start the RFB server through the >> snapshot because it will kick off all attached clients. Of which there >> is at most one and its me, so it wouldn't be too bad but its not >> desirable. >> >> It freezes whether there is a client connection or not. > > Paul, > > Zinc HTTP Server are stopped/started on each image save. For HTTP 1.1 that > is OK, protocol wise. I think that RFB should do something similar to > prevent issues like the one you are reporting (and there have been many in > the past as well). > > Consider this: if you save but do not quit, and you later abort the image > hard, you would expect the saved image to work, right. That can only be > with a fresh server socket. > > Sven > >> Thanks >> >> Paul >> I think the 'abort the image hard' problem is taken care of in the #startUp: method on the RFBServer. It checks if the image is resuming and the server is/was running and if so stopping then restarting the RFB server. I don't want to stop and restart the server every time there is a save. I'm fine doing it on startup after a quit or abort as you describe. Anyway, from the stack dump I posted I cannot tell for sure but it seems like a VM bug. -- View this message in context: http://forum.world.st/How-do-diagnose-image-locks-up-cpu-100-on-save-tp4704… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Aug. 22, 2013

Re: [Pharo-dev] [Pharo-fuel] Fuel API bug

by StÃ©phane Ducasse

hi henrik do you have an implementation for when:do:for: because I do not see it? https://pharo.fogbugz.com/default.asp?11316 Stef >>>> #when:do: is there already ;) >>> >>> even better then :) >>> >>>> #when:send:to: and #when:do:for: should be added though. >> >> what would be when:do:for: ? > > Its use is to specify a non-standard subscriber. > In VW it is pretty much mandatory when using weak subscription, as VW subscribes the block. > In Pharo it's much less useful, both because the at the moment weak when:do: doesn't work, but also since Pharo subscribes the block's receiver by default, which is what you want in 95% of cases. > Still nice to have around in the edge cases one might still need it though. > > Cheers, > Henry

Aug. 22, 2013

Re: [Pharo-dev] How do diagnose image locks up (cpu 100%) on save?

by Sven Van Caekenberghe

On 22 Aug 2013, at 19:34, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > Hi - > > The plain Pharo 20619 + RFB image in my dropbox here: > https://dl.dropboxusercontent.com/u/4460862/pharo2RFB.zip freezes when > you save it while the RFB server is running. The freeze occurs in the > #snapshotPrimitive. > > > This is the VM info I'm using: > > 3.9-7 #1 Wed Mar 13 18:22:44 CET 2013 gcc 4.4.3 > NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: > a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 > NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: > a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 > git://gitorious.org/cogvm/blessed.git Commit: > 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 > By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #14535 > Linux linux-ubuntu-10 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59 > UTC 2012 x86_64 GNU/Linux > plugin path: /home/paul/pharo/pharo2.0/bin [default: > /home/paul/pharo/pharo2.0/bin/] > > > How can I diagnose/fix what is going wrong? > > > I'm reluctant to make it stop and start the RFB server through the > snapshot because it will kick off all attached clients. Of which there > is at most one and its me, so it wouldn't be too bad but its not > desirable. > > It freezes whether there is a client connection or not. Paul, Zinc HTTP Server are stopped/started on each image save. For HTTP 1.1 that is OK, protocol wise. I think that RFB should do something similar to prevent issues like the one you are reporting (and there have been many in the past as well). Consider this: if you save but do not quit, and you later abort the image hard, you would expect the saved image to work, right. That can only be with a fresh server socket. Sven > Thanks > > Paul >

Aug. 22, 2013

Re: [Pharo-dev] How do diagnose image locks up (cpu 100%) on save?

by Paul DeBruicker

Paul DeBruicker wrote > In this instance, that doesn't output anything. Specifically: > > > $ ps -A | grep pharo > 6001 pts/0 00:00:45 pharo > $ kill -s SIGUSR1 6001 > $ Oh no wait. I'm an idiot. It spits out this in the terminal where the pharo process is running: stack page bytes 4096 available headroom 3300 minimum unused headroom 3504 (SIGUSR1) SIGUSR1 Thu Aug 22 11:18:58 2013 pharo VM version: 3.9-7 #1 Wed Mar 13 18:22:44 CET 2013 gcc 4.4.3 Built from: NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 With: NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 Revision: git://gitorious.org/cogvm/blessed.git Commit: 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #14535 Build host: Linux linux-ubuntu-10 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59 UTC 2012 x86_64 GNU/Linux plugin path: /home/paul/Downloads/pharo2.0/bin [default: /home/paul/Downloads/pharo2.0/bin/] C stack backtrace: /home/paul/Downloads/pharo2.0/bin/pharo[0x80a0c0c] /home/paul/Downloads/pharo2.0/bin/pharo[0x80a0e67] [0xf7771410] /home/paul/Downloads/pharo2.0/bin/vm-display-X11(+0x10d51)[0xf7765d51] /home/paul/Downloads/pharo2.0/bin/pharo(ioRelinquishProcessorForMicroseconds+0x14)[0x809e674] /home/paul/Downloads/pharo2.0/bin/pharo[0x8081a0a] [0xb7010d11] /home/paul/Downloads/pharo2.0/bin/pharo(interpret+0x7a6)[0x8094f36] /home/paul/Downloads/pharo2.0/bin/pharo(main+0x2b3)[0x80a18b3] /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0xf7554935] All Smalltalk process stacks (active first): Process 0xb899e15c priority 10 0xfff24370 M ProcessorScheduler class>idleProcess 0xb7347240: a(n) ProcessorScheduler class 0xfff24390 I [] in ProcessorScheduler class>startUp 0xb7347240: a(n) ProcessorScheduler class 0xfff243b0 I [] in BlockClosure>newProcess 0xb899e080: a(n) BlockClosure Process 0xb856be14 priority 50 0xfff263b0 I WeakArray class>finalizationProcess 0xb7347450: a(n) WeakArray class 0xb85ce458 s [] in WeakArray class>restartFinalizationProcess 0xb856bdb4 s [] in BlockClosure>newProcess Process 0xb85ced20 priority 80 0xfff29350 M Delay class>handleTimerEvent 0xb7349a3c: a(n) Delay class 0xfff29370 I Delay class>runTimerEventLoop 0xb7349a3c: a(n) Delay class 0xfff29390 I [] in Delay class>startTimerEventLoop 0xb7349a3c: a(n) Delay class 0xfff293b0 I [] in BlockClosure>newProcess 0xb85cec44: a(n) BlockClosure Process 0xb899dc7c priority 60 0xfff2a344 I InputEventFetcher>waitForInput 0xb7326fd8: a(n) InputEventFetcher 0xfff2a370 I InputEventFetcher>eventLoop 0xb7326fd8: a(n) InputEventFetcher 0xfff2a390 I [] in InputEventFetcher>installEventLoop 0xb7326fd8: a(n) InputEventFetcher 0xfff2a3b0 I [] in BlockClosure>newProcess 0xb899dba0: a(n) BlockClosure Process 0xb899df90 priority 60 0xfff1c370 I SmalltalkImage>lowSpaceWatcher 0xb764de94: a(n) SmalltalkImage 0xfff1c390 I [] in SmalltalkImage>installLowSpaceWatcher 0xb764de94: a(n) SmalltalkImage 0xfff1c3b0 I [] in BlockClosure>newProcess 0xb899deb4: a(n) BlockClosure Process 0xb74c5848 priority 40 0xfff282fc M [] in Delay>wait 0xb8ae610c: a(n) Delay 0xfff2831c M BlockClosure>ifCurtailed: 0xb8ae6348: a(n) BlockClosure 0xfff28338 M Delay>wait 0xb8ae610c: a(n) Delay 0xfff28358 M WorldState>interCyclePause: 0xb7182620: a(n) WorldState 0xfff28374 M WorldState>doOneCycleFor: 0xb7182620: a(n) WorldState 0xfff28390 M PasteUpMorph>doOneCycle 0xb7173150: a(n) PasteUpMorph 0xfff283b0 I [] in MorphicUIManager>? 0xb7186a5c: a(n) MorphicUIManager 0xb74c57e8 s [] in BlockClosure>? Most recent primitives relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: 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relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: relinquishProcessorForMicroseconds: stack page bytes 4096 available headroom 3300 minimum unused headroom 3504 (SIGUSR1) -- View this message in context: http://forum.world.st/How-do-diagnose-image-locks-up-cpu-100-on-save-tp4704… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Aug. 22, 2013