September 2012 - Pharo-users

Re: [Pharo-users] Programmer Day @ Buenos Aires

by NicolÃ¡s Paez

> > is there any way to see this online? I don't think so, but I will ask and let you know . > i would really like to see it.. i > am really tossing the idea around about visiting buenos aires fro a > longer term stay .. i hear the climate for developers is really > good.. > > Yes, there is a lot of work around here. Regards, NicoPaez

Sept. 8, 2012

Re: [Pharo-users] Programmer Day @ Buenos Aires

by NicolÃ¡s Paez

On Fri, Sep 7, 2012 at 4:37 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr>wrote: > thanks for the effort! > It is not an effort, it is pleasure!!! Regards, NicoPaez

Sept. 8, 2012

Re: [Pharo-users] Max CPU usage when #drawOn: is overridden

by phil＠highoctane.be

I would be surprised to see more than a WorldState instance for each World. A World, the entire Smalltalk screen, is a PasteUpMorph. Morphic-Worlds is the package that manages all this. PateUpMorph>>runStepMethods worldState runStepMethodsIn: self WorldState>>doOneCycleNowFor: aWorld "Immediately do one cycle of the interaction loop. This should not be called directly, but only via doOneCycleFor:" DisplayScreen checkForNewScreenSize. "process user input events" LastCycleTime := Time millisecondClockValue. self handsDo: [:h | ActiveHand := h. h processEvents. ActiveHand := nil ]. "the default is the primary hand" ActiveHand := self hands first. aWorld runStepMethods. "there are currently some variations here" self displayWorldSafely: aWorld. Double dispatching crazyness aside, I doubt the pause affects anything like you say. Philippe 2012/9/8 Igor Stasenko <siguctua(a)gmail.com> > On 5 September 2012 08:25, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > > Stepping methods are called in the main UI thread but they aren't > > drawing anything. > > > > Then, what is the default cycle? > > > > Have a look at MorphicUIManager for answers, especially > > spawnNewProcess, which basically does this: > > > > spawnNewProcess > > > > UIProcess := [ > > [World doOneCycle. Processor yield. false] whileFalse: > []. > > ] newProcess priority: Processor userSchedulingPriority. > > UIProcess resume > > > > World doOneCycle and the userSchedulingPriority are at play here. > > > > This will lead us to > > > > WorldState >> doOneCycleFor: aWorld > > "Do one cycle of the interaction loop. This method is called > > repeatedly when the world is running. This is a moderately private > > method; a better alternative is usually either to wait for events or > > to check the state of things from #step methods." > > > > self interCyclePause: MinCycleLapse. > > self doOneCycleNowFor: aWorld. > > > > > > And, yeah, here it is: > > > > WorldState >> interCyclePause: milliSecs > > "delay enough that the previous cycle plus the amount of delay > will > > equal milliSecs. If the cycle is already expensive, then no delay > > occurs. However, if the system is idly waiting for interaction from > > the user, the method will delay for a proportionally long time and > > cause the overall CPU usage of Squeak to be low. > > If self serverMode returns true then, always do a complete delay > of > > 50ms, independant of my argument. This prevents the freezing problem > > described in Mantis #6581" > > > > | currentTime wait | > > self serverMode > > ifFalse: [ > > (lastCycleTime notNil and: [CanSurrenderToOS ~~ > false]) ifTrue: [ > > currentTime := Time > millisecondClockValue. > > wait := lastCycleTime + milliSecs - > currentTime. > > (wait > 0 and: [ wait <= milliSecs ] ) > ifTrue: [ > > (Delay forMilliseconds: wait) > wait ] ] ] > > ifTrue: [ (Delay forMilliseconds: 50) wait ]. > > > > lastCycleTime := Time millisecondClockValue. > > CanSurrenderToOS := true. > > > > Well, you may want to tweak this a bit to get a feel on how things do > > work under Athens there. > > > > This is all generic Morphic in 1.4 so, you may be in for some > > differences with Athens. > > Isn't that big 50 millisecs hardcoded magic number nice :-( ? > > Maybe can there be a pref for that? > > > > it is a default intercycle pause. > actually you can set #stepTime to be 0 .. then this pause won't affect > anything. > If i not mistaken. > If i do, then yes, it would be good to be able to dynamically change the > pause > depending on needs of world's morphs (i.e. #stepTime) > > > Enjoy, > > > > Philippe Back > > > > > > > -- > Best regards, > Igor Stasenko. > > >

Sept. 8, 2012

Re: [Pharo-users] Max CPU usage when #drawOn: is overridden

by Igor Stasenko

On 5 September 2012 13:07, S Krish <krishnamachari.sudhakar(a)gmail.com> wrote: > Call it error / removable property rendering on drawOn: > > For: > > #stepTime > > ^5000. > > > #drawOn: aCanvas > > super drawOn: aCanvas. > > "Other draw routines: draw other submorphs, lines etc.. " > > self borderStyle: aStyleSetBasedOnTime . > setting the border style in drawOn method is a mistake indeed. because changing any visual properties of morph with add a damage rectangle to display, and that means that given morph will be constantly get redrawn, because it is always requests to be updated (since a visual property set).. > "This one statement makes it draw immediately.. for all morphs remove this > it works like a charm rendering only every 5 seconds..stupid and obviously > not a big need.. but in case needed.. better not placed here.." > > > Are there any other caveats is not known for now.. but its ok for now... > -- Best regards, Igor Stasenko.

Sept. 8, 2012

Re: [Pharo-users] Max CPU usage when #drawOn: is overridden

by Igor Stasenko

On 5 September 2012 08:25, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > Stepping methods are called in the main UI thread but they aren't > drawing anything. > > Then, what is the default cycle? > > Have a look at MorphicUIManager for answers, especially > spawnNewProcess, which basically does this: > > spawnNewProcess > > UIProcess := [ > [World doOneCycle. Processor yield. false] whileFalse: []. > ] newProcess priority: Processor userSchedulingPriority. > UIProcess resume > > World doOneCycle and the userSchedulingPriority are at play here. > > This will lead us to > > WorldState >> doOneCycleFor: aWorld > "Do one cycle of the interaction loop. This method is called > repeatedly when the world is running. This is a moderately private > method; a better alternative is usually either to wait for events or > to check the state of things from #step methods." > > self interCyclePause: MinCycleLapse. > self doOneCycleNowFor: aWorld. > > > And, yeah, here it is: > > WorldState >> interCyclePause: milliSecs > "delay enough that the previous cycle plus the amount of delay will > equal milliSecs. If the cycle is already expensive, then no delay > occurs. However, if the system is idly waiting for interaction from > the user, the method will delay for a proportionally long time and > cause the overall CPU usage of Squeak to be low. > If self serverMode returns true then, always do a complete delay of > 50ms, independant of my argument. This prevents the freezing problem > described in Mantis #6581" > > | currentTime wait | > self serverMode > ifFalse: [ > (lastCycleTime notNil and: [CanSurrenderToOS ~~ false]) ifTrue: [ > currentTime := Time millisecondClockValue. > wait := lastCycleTime + milliSecs - currentTime. > (wait > 0 and: [ wait <= milliSecs ] ) ifTrue: [ > (Delay forMilliseconds: wait) wait ] ] ] > ifTrue: [ (Delay forMilliseconds: 50) wait ]. > > lastCycleTime := Time millisecondClockValue. > CanSurrenderToOS := true. > > Well, you may want to tweak this a bit to get a feel on how things do > work under Athens there. > > This is all generic Morphic in 1.4 so, you may be in for some > differences with Athens. > Isn't that big 50 millisecs hardcoded magic number nice :-( ? > Maybe can there be a pref for that? > it is a default intercycle pause. actually you can set #stepTime to be 0 .. then this pause won't affect anything. If i not mistaken. If i do, then yes, it would be good to be able to dynamically change the pause depending on needs of world's morphs (i.e. #stepTime) > Enjoy, > > Philippe Back > > -- Best regards, Igor Stasenko.

Sept. 8, 2012

Re: [Pharo-users] factory for quickly building test objects

by Guillaume Larcheveque

I think you are thinking of BabyMock steph. 2012/9/7 sergio_101 <sergio.rrd(a)gmail.com> > i suppose you could make a method that creates itself with some data > filled in.. that might work, too.. > > On Fri, Sep 7, 2012 at 3:11 PM, StÃ©phane Ducasse > <stephane.ducasse(a)inria.fr> wrote: > > There is but I do not remember its name a way to instruct an object > about answer to message and it can replay > > the answer. > > > > stef > > On Sep 7, 2012, at 6:01 PM, sergio_101 wrote: > > > >> whoa.. i am going to have to look at this a bit more.. but it looks > >> like that is a mocking library.. i am thinking of something a little > >> more like 'factory girl' for ruby.. > >> > >> thanks! > >> > >> > >> > >> On Fri, Sep 7, 2012 at 11:53 AM, Paul DeBruicker <pdebruic(a)gmail.com> > wrote: > >>> hmm. Is something like this what you have in mind: > >>> > >>> http://www.squeaksource.com/Mocketry.html > >>> > >>> ? > >>> > >>> > >>> > >>> On 09/07/2012 08:07 AM, sergio_101 wrote: > >>>> > >>>> hey, all.. > >>>> > >>>> i was wondering of there was a system to allow me to quickly build an > >>>> object for testing.. > >>>> > >>>> something that would let me build a complex object that and feed it to > >>>> a test suite. something that would allow me to define all of the > >>>> object's attributes and assure its validity quickly.. > >>>> > >>>> any ideas? > >>>> > >>>> thanks! > >>>> > >>>> > >>> > >>> > >> > >> > >> > >> -- > >> ---- > >> peace, > >> sergio > >> photographer, journalist, visionary > >> > >> http://www.ThoseOptimizeGuys.com > >> http://www.CodingForHire.com > >> http://www.coffee-black.com > >> http://www.painlessfrugality.com > >> http://www.twitter.com/sergio_101 > >> http://www.facebook.com/sergio101 > >> > > > > > > > > -- > ---- > peace, > sergio > photographer, journalist, visionary > > http://www.ThoseOptimizeGuys.com > http://www.CodingForHire.com > http://www.coffee-black.com > http://www.painlessfrugality.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 > > -- *Guillaume Larcheveque*

Sept. 8, 2012

Re: [Pharo-users] setting up dependencies..

by StÃ©phane Ducasse

and read the available chapter. in pharo by example web site. On Sep 8, 2012, at 4:38 AM, Paul DeBruicker wrote: > Metacello? > > On Sep 7, 2012, at 6:46 PM, sergio_101 <sergio.rrd(a)gmail.com> wrote: > >> if i have a project where i am working with a small team, is there any >> way i can automagically let everyone know about the dependencies? >> >> a bundler sort of this? >> >> this would also allow me build up a new image with my project quickly.. >> >> thanks! >> >> >> -- >> ---- >> peace, >> sergio >> photographer, journalist, visionary >> >> http://www.ThoseOptimizeGuys.com >> http://www.CodingForHire.com >> http://www.coffee-black.com >> http://www.painlessfrugality.com >> http://www.twitter.com/sergio_101 >> http://www.facebook.com/sergio101 >> >

Sept. 8, 2012

Re: [Pharo-users] ERD for pharo

by Paul DeBruicker

Moose technology.org. ? On Sep 7, 2012, at 1:39 PM, sergio_101 <sergio.rrd(a)gmail.com> wrote: > one of the things i find really helpful is being able to generate and > entity relation diagram for a project.. is it possible to do something > like this with smalltalk? > > thanks! > > -- > ---- > peace, > sergio > photographer, journalist, visionary > > http://www.ThoseOptimizeGuys.com > http://www.CodingForHire.com > http://www.coffee-black.com > http://www.painlessfrugality.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

Sept. 8, 2012

Re: [Pharo-users] setting up dependencies..

by Paul DeBruicker

Metacello? On Sep 7, 2012, at 6:46 PM, sergio_101 <sergio.rrd(a)gmail.com> wrote: > if i have a project where i am working with a small team, is there any > way i can automagically let everyone know about the dependencies? > > a bundler sort of this? > > this would also allow me build up a new image with my project quickly.. > > thanks! > > > -- > ---- > peace, > sergio > photographer, journalist, visionary > > http://www.ThoseOptimizeGuys.com > http://www.CodingForHire.com > http://www.coffee-black.com > http://www.painlessfrugality.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

Sept. 8, 2012

setting up dependencies..

by sergio_101

if i have a project where i am working with a small team, is there any way i can automagically let everyone know about the dependencies? a bundler sort of this? this would also allow me build up a new image with my project quickly.. thanks! -- ---- peace, sergio photographer, journalist, visionary http://www.ThoseOptimizeGuys.com http://www.CodingForHire.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Sept. 8, 2012