April 2021 - Pharo-users - lists.pharo.org

Re: Crash after http request, see the dump file

by Davide Varvello

Hi David, Usually when the image crashes you'll find a crash.dmp file. It's weird there isn't anything Davide Long Haired David wrote > Sorry to but in here but I have just moved my Pharo/Seaside server > software from my MacBookAir, where it has run without issue for the last > couple of weeks, onto firstly a Lenovo desktop running Windows 2012 server > and then, in frustration , onto a Dell laptop but it hasnât managed to run > for 24 hours without crashing (by crashing, I mean Pharo just > disappears!). I donât us any OsProcess, just ordinary Seaside and > Smalltalk code. It has happened three days in a row at different times > with different pages being accessed. > > Both Windows machines have ample disk space (SSD) and 16GB memory. > > How do I get a dump as I canât see any files that would be regarded as so? > > David > >> On 15 Apr 2021, at 14:55, Guillermo Polito < > guillermopolito@ > > wrote: >> >> Hi Davide, >> >> Taking a look at the dump, Iâd say it looks like a memory corruption. >> It crashes when running the GC, but very probably because the heap was >> already corrupt. >> >> >> 5 Pharo 0x000000010582ea3b mapStackPages >> + 345 >> 6 Pharo 0x000000010582e0ff >> mapInterpreterOops + 16 >> 7 Pharo 0x000000010580af54 doScavenge + >> 648 >> 8 Pharo 0x000000010581305e >> scavengingGCTenuringIf + 333 >> 9 Pharo 0x00000001057f663a >> checkForEventsMayContextSwitch + 111 >> 10 Pharo 0x00000001057fa815 >> ceStackOverflow + 110 >> 11 ??? 0x000000010b25c62b 0x0 + >> 4481992235 >> 12 Pharo 0x00000001057e2b0a interpret + >> 632 >> >> Does this happen often in your setup? >> >> G >> >> >>> El 14 abr 2021, a las 10:21, Davide Varvello via Pharo-users < > pharo-users@.pharo > <mailto: > pharo-users@.pharo > >> escribiÃ³: >>> >>> Hi Sven, >>> It has not happened today. I also use a lot of OsProcess, but I don't >>> know >>> if it is related to it. >>> Cheers >>> Davide >>> >>> >>> >>> Sven Van Caekenberghe-2 wrote >>>> I can't see anything networking, HTTP or Zinc related in the dump. >>>> It looks like something went wrong during garbage collection. >>>> I suppose this is not a repeatable case, is it ? >>>> >>>>> On 14 Apr 2021, at 09:22, Davide Varvello via Pharo-users < >>> >>>> pharo-users@.pharo >>> >>>> > wrote: >>>>> >>>>> Hi guys, >>>>> I'm working on Pharo 8 on BigSur >>>>> (Pharo 8.0.0 Build information: >>>>> Pharo-8.0.0+build.1128.sha.9f6475d88dda7d83acdeeda794df35d304cf620d >>>>> (64 >>>>> Bit)) >>>>> >>>>> Yesterday after an http call to my zinc server the image crashed. >>>>> Can you please take a look to the dump file and tell me what happened? >>>>> >>>>> It would be worth so much to me, thank you >>>>> >>>>> The file is here: https://pastebin.com/SrE6gcCv >>>>> <https://pastebin.com/SrE6gcCv> >>>>> >>>>> >>>>> Davide >>>>> >>>>> >>>>> >>>>> -- >>>>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>>>> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> >>> >>> >>> >>> >>> >>> -- >>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

April 16, 2021

Re: We haven't had a design debate in a while - thoughts on CD.buy article...

by Russ Whaley

Wow, I must be missing a whole lot of context in that discussion... (instant reaction as well, lol) - a product (CD, book, etc.) does not 'buy' - it can be bought, sure, but it has no buying action. Even in another context a CD does not 'play'... aMusicPlayer.play(aCD). - However, a customer can 'buy' a product... - customer.buy(aCD) -or- - customer.addToCart(aCD) - customer.checkOut(aCart) - Invoice.new(aCart), etc. - ... but the CD doesn't DO anything. - I get the idea that different products might have different behaviour when they are 'bought' - but these are, in this example, fulfillment - not the 'buy' action... - aCDstream might be set for download - aCDphysical might be set to physically pull off a shelf and ship - aCDcare might send an email on warranty, whatever... but let's name it better than 'buy' :) Tim, thanks for the link - I'm always trying to expand my thinking about object modeling - discovering cool ways/things others are thinking about... Now I have to go dust off all my old POS (point of sale, not piece of s#&t) code and see how poorly I may have modeled those environments!! Thanks for the morning diversion! Cheers. On Fri, Apr 16, 2021 at 8:53 AM Esteban Maringolo <emaringolo(a)gmail.com> wrote: > I saw a tweet about that, and I think that the example is misleading, > maybe intentionally so. > > I don't think anybody would model it that way, in any case you'd have > aProduct.buy() or aProduct.addToCart(aCart). > > If you think it with the typical dog.bark() it certainly makes more sense > than bark(dog). > > Regards! > > Esteban A. Maringolo > > > On Fri, Apr 16, 2021 at 5:20 AM Tim Mackinnon <tim(a)testit.works> wrote: > >> Hi guys - someone pointed out this article from a UK colleague which >> seems to be causing a flurry of discussion - but I always like the insights >> of this group. I had an instant reaction when I read it - but curious what >> people here think in 2021. >> >> >> https://www.linkedin.com/posts/jasongorman_the-year-is-2021-and-people-stil… >> >> Tim >> > -- Russ Whaley whaley.russ(a)gmail.com

April 16, 2021

Re: We haven't had a design debate in a while - thoughts on CD.buy article...

by Esteban Maringolo

I saw a tweet about that, and I think that the example is misleading, maybe intentionally so. I don't think anybody would model it that way, in any case you'd have aProduct.buy() or aProduct.addToCart(aCart). If you think it with the typical dog.bark() it certainly makes more sense than bark(dog). Regards! Esteban A. Maringolo On Fri, Apr 16, 2021 at 5:20 AM Tim Mackinnon <tim(a)testit.works> wrote: > Hi guys - someone pointed out this article from a UK colleague which seems > to be causing a flurry of discussion - but I always like the insights of > this group. I had an instant reaction when I read it - but curious what > people here think in 2021. > > > https://www.linkedin.com/posts/jasongorman_the-year-is-2021-and-people-stil… > > Tim >

April 16, 2021

We haven't had a design debate in a while - thoughts on CD.buy article...

by Tim Mackinnon

Hi guys - someone pointed out this article from a UK colleague which seems to be causing a flurry of discussion - but I always like the insights of this group. I had an instant reaction when I read it - but curious what people here think in 2021. https://www.linkedin.com/posts/jasongorman_the-year-is-2021-and-people-stil… Tim

April 16, 2021

Re: Crash after http request, see the dump file

by David Pennington

Sorry to but in here but I have just moved my Pharo/Seaside server software from my MacBookAir, where it has run without issue for the last couple of weeks, onto firstly a Lenovo desktop running Windows 2012 server and then, in frustration , onto a Dell laptop but it hasnât managed to run for 24 hours without crashing (by crashing, I mean Pharo just disappears!). I donât us any OsProcess, just ordinary Seaside and Smalltalk code. It has happened three days in a row at different times with different pages being accessed. Both Windows machines have ample disk space (SSD) and 16GB memory. How do I get a dump as I canât see any files that would be regarded as so? David > On 15 Apr 2021, at 14:55, Guillermo Polito <guillermopolito(a)gmail.com> wrote: > > Hi Davide, > > Taking a look at the dump, Iâd say it looks like a memory corruption. > It crashes when running the GC, but very probably because the heap was already corrupt. > > > 5 Pharo 0x000000010582ea3b mapStackPages + 345 > 6 Pharo 0x000000010582e0ff mapInterpreterOops + 16 > 7 Pharo 0x000000010580af54 doScavenge + 648 > 8 Pharo 0x000000010581305e scavengingGCTenuringIf + 333 > 9 Pharo 0x00000001057f663a checkForEventsMayContextSwitch + 111 > 10 Pharo 0x00000001057fa815 ceStackOverflow + 110 > 11 ??? 0x000000010b25c62b 0x0 + 4481992235 > 12 Pharo 0x00000001057e2b0a interpret + 632 > > Does this happen often in your setup? > > G > > >> El 14 abr 2021, a las 10:21, Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org <mailto:pharo-users@lists.pharo.org>> escribiÃ³: >> >> Hi Sven, >> It has not happened today. I also use a lot of OsProcess, but I don't know >> if it is related to it. >> Cheers >> Davide >> >> >> >> Sven Van Caekenberghe-2 wrote >>> I can't see anything networking, HTTP or Zinc related in the dump. >>> It looks like something went wrong during garbage collection. >>> I suppose this is not a repeatable case, is it ? >>> >>>> On 14 Apr 2021, at 09:22, Davide Varvello via Pharo-users < >> >>> pharo-users@.pharo >> >>> > wrote: >>>> >>>> Hi guys, >>>> I'm working on Pharo 8 on BigSur >>>> (Pharo 8.0.0 Build information: >>>> Pharo-8.0.0+build.1128.sha.9f6475d88dda7d83acdeeda794df35d304cf620d (64 >>>> Bit)) >>>> >>>> Yesterday after an http call to my zinc server the image crashed. >>>> Can you please take a look to the dump file and tell me what happened? >>>> >>>> It would be worth so much to me, thank you >>>> >>>> The file is here: https://pastebin.com/SrE6gcCv <https://pastebin.com/SrE6gcCv> >>>> >>>> >>>> Davide >>>> >>>> >>>> >>>> -- >>>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> >> >> >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html>

April 15, 2021

Re: Crash after http request, see the dump file

by Davide Varvello

Hi Guillermo, Nope, it was the first time, but I worry it can happen in the future. Cheers Davide Guillermo Polito wrote > Hi Davide, > > Taking a look at the dump, Iâd say it looks like a memory corruption. > It crashes when running the GC, but very probably because the heap was > already corrupt. > > > 5 Pharo 0x000000010582ea3b mapStackPages + > 345 > 6 Pharo 0x000000010582e0ff > mapInterpreterOops + 16 > 7 Pharo 0x000000010580af54 doScavenge + > 648 > 8 Pharo 0x000000010581305e > scavengingGCTenuringIf + 333 > 9 Pharo 0x00000001057f663a > checkForEventsMayContextSwitch + 111 > 10 Pharo 0x00000001057fa815 ceStackOverflow > + 110 > 11 ??? 0x000000010b25c62b 0x0 + > 4481992235 > 12 Pharo 0x00000001057e2b0a interpret + 632 > > Does this happen often in your setup? > > G > > >> El 14 abr 2021, a las 10:21, Davide Varvello via Pharo-users < > pharo-users@.pharo > > escribiÃ³: >> >> Hi Sven, >> It has not happened today. I also use a lot of OsProcess, but I don't >> know >> if it is related to it. >> Cheers >> Davide >> >> >> >> Sven Van Caekenberghe-2 wrote >>> I can't see anything networking, HTTP or Zinc related in the dump. >>> It looks like something went wrong during garbage collection. >>> I suppose this is not a repeatable case, is it ? >>> >>>> On 14 Apr 2021, at 09:22, Davide Varvello via Pharo-users < >> >>> pharo-users@.pharo >> >>> > wrote: >>>> >>>> Hi guys, >>>> I'm working on Pharo 8 on BigSur >>>> (Pharo 8.0.0 Build information: >>>> Pharo-8.0.0+build.1128.sha.9f6475d88dda7d83acdeeda794df35d304cf620d (64 >>>> Bit)) >>>> >>>> Yesterday after an http call to my zinc server the image crashed. >>>> Can you please take a look to the dump file and tell me what happened? >>>> >>>> It would be worth so much to me, thank you >>>> >>>> The file is here: https://pastebin.com/SrE6gcCv >>>> >>>> >>>> Davide >>>> >>>> >>>> >>>> -- >>>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> >> >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

April 15, 2021

Re: Crash after http request, see the dump file

by Guillermo Polito

Hi Davide, Taking a look at the dump, Iâd say it looks like a memory corruption. It crashes when running the GC, but very probably because the heap was already corrupt. 5 Pharo 0x000000010582ea3b mapStackPages + 345 6 Pharo 0x000000010582e0ff mapInterpreterOops + 16 7 Pharo 0x000000010580af54 doScavenge + 648 8 Pharo 0x000000010581305e scavengingGCTenuringIf + 333 9 Pharo 0x00000001057f663a checkForEventsMayContextSwitch + 111 10 Pharo 0x00000001057fa815 ceStackOverflow + 110 11 ??? 0x000000010b25c62b 0x0 + 4481992235 12 Pharo 0x00000001057e2b0a interpret + 632 Does this happen often in your setup? G > El 14 abr 2021, a las 10:21, Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org> escribiÃ³: > > Hi Sven, > It has not happened today. I also use a lot of OsProcess, but I don't know > if it is related to it. > Cheers > Davide > > > > Sven Van Caekenberghe-2 wrote >> I can't see anything networking, HTTP or Zinc related in the dump. >> It looks like something went wrong during garbage collection. >> I suppose this is not a repeatable case, is it ? >> >>> On 14 Apr 2021, at 09:22, Davide Varvello via Pharo-users < > >> pharo-users@.pharo > >> > wrote: >>> >>> Hi guys, >>> I'm working on Pharo 8 on BigSur >>> (Pharo 8.0.0 Build information: >>> Pharo-8.0.0+build.1128.sha.9f6475d88dda7d83acdeeda794df35d304cf620d (64 >>> Bit)) >>> >>> Yesterday after an http call to my zinc server the image crashed. >>> Can you please take a look to the dump file and tell me what happened? >>> >>> It would be worth so much to me, thank you >>> >>> The file is here: https://pastebin.com/SrE6gcCv >>> >>> >>> Davide >>> >>> >>> >>> -- >>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html>

April 15, 2021

UK Smalltalk User Group meeting - Wednesday April 28th

by Giovanni Corriga

The next meeting of the UK Smalltalk User Group will be on Wednesday, April 28th. Esteban Lorenzano will give us an update on Pharo: What's new? What is updated? What remains? This talk will present (and show working!) the Pharo 9 roadmap and principal changes made to Pharo since the release of the previous version. Esteban studied Computer Sciences at Universidad de Buenos Aires, and worked since 1994 in many object-oriented and low-level technologies in different software companies, serving in various positions from junior programmer to senior architect. In 2007 he co-founded Smallworks to offer Pharo-based agile development projects. Since 2012 he dedicated full time to developing the Pharo code and community. He works for the Pharo Consortium in Lille, France, as lead developer for Pharo and being responsible with the coordination of new releases and the implementation and maintenance of several Pharo libraries.Given the current COVID-19 restrictions, this will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/cbklbryccgblc/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

April 15, 2021

Re: Crash after http request, see the dump file

by Davide Varvello

Hi Sven, It has not happened today. I also use a lot of OsProcess, but I don't know if it is related to it. Cheers Davide Sven Van Caekenberghe-2 wrote > I can't see anything networking, HTTP or Zinc related in the dump. > It looks like something went wrong during garbage collection. > I suppose this is not a repeatable case, is it ? > >> On 14 Apr 2021, at 09:22, Davide Varvello via Pharo-users < > pharo-users@.pharo > > wrote: >> >> Hi guys, >> I'm working on Pharo 8 on BigSur >> (Pharo 8.0.0 Build information: >> Pharo-8.0.0+build.1128.sha.9f6475d88dda7d83acdeeda794df35d304cf620d (64 >> Bit)) >> >> Yesterday after an http call to my zinc server the image crashed. >> Can you please take a look to the dump file and tell me what happened? >> >> It would be worth so much to me, thank you >> >> The file is here: https://pastebin.com/SrE6gcCv >> >> >> Davide >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

April 14, 2021

Re: Crash after http request, see the dump file

by Sven Van Caekenberghe

I can't see anything networking, HTTP or Zinc related in the dump. It looks like something went wrong during garbage collection. I suppose this is not a repeatable case, is it ? > On 14 Apr 2021, at 09:22, Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Hi guys, > I'm working on Pharo 8 on BigSur > (Pharo 8.0.0 Build information: > Pharo-8.0.0+build.1128.sha.9f6475d88dda7d83acdeeda794df35d304cf620d (64 > Bit)) > > Yesterday after an http call to my zinc server the image crashed. > Can you please take a look to the dump file and tell me what happened? > > It would be worth so much to me, thank you > > The file is here: https://pastebin.com/SrE6gcCv > > > Davide > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

April 14, 2021