January 2013 - Pharo-dev - lists.pharo.org

[Pharo-project] [update 2.0] #20481
by Marcus Denker Jan. 21, 2013

Jan. 21, 2013

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Re: [Pharo-project] [ANN] Headless support for Cog Cocoa VM
by Stephan Eggermont Jan. 21, 2013

Jan. 21, 2013

This doesn't work open CogVM-release-noflash-noArgs.app Pier3.image & Jan 19 11:20:51 Stephan-Eggermonts-iMac [0x0-0x2f92f9].org.seaside-project[36832]: This interpreter (vers. 6502) cannot read image file (vers. 6505). Jan 19 11:20:51 Stephan-Eggermonts-iMac [0x0-0x2f92f9].org.seaside-project[36832]: Press CR to quit... Jan 19 11:20:52 Stephan-Eggermonts-iMac ReportCrash[36836]: Failed to create CSSymbolicatorRef for launchd Jan 19 11:20:52 Stephan-Eggermonts-iMac com.apple.launchd.peruser.501[207] ([0x0-0x2fa2fa].org.squeakfoundation.Squeak[36835]): Job appears to have crashed: Segmentation fault Jan 19 11:20:52 Stephan-Eggermonts-iMac ReportCrash[36836]: Saved crash report for launchd[36835] version ??? (???) to /Users/stephan/Library/Logs/DiagnosticReports/launchd_2013-01-19-112052_Stephan-Eggermonts-iMac.crash

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[Pharo-project] ESUG 2013: book the dates: 8 to 13 September at Annecy (FR)
by StÃ©phane Ducasse Jan. 20, 2013

Jan. 20, 2013

Hi Smalltalkers I do not know if you are aware of it but ESUG 2013 will be in a lovely place with a great organization team: Annecy in France also called the little venice of the alps http://www.tourisme-annecy.net The dates are public now: from 9-13 of September with a camp day the 8th so book the dates and start to think about your presentations. We will launch another call for presentations. Please distribute :) Stef and the ESUG board.

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Re: [Pharo-project] RateLimitingAnnouncer
by Fernando Olivero Jan. 20, 2013

Jan. 20, 2013

Hi, instead of subclassing Announcement, i would add the limiting logic to the one receiving the announcements. To keep everything but the view agnostic of this "optimization" detail. Because all you need is to prevent the UI from rendering in intervals less then 100ms. The announcement doesn't care wether the UI should redraw or not. Fernando On Sun, Jan 20, 2013 at 11:16 AM, StÃ©phane Ducasse < stephane.ducasse(a)inria.fr> wrote: > > On Jan 20, 2013, at 10:27 AM, Ben Coman wrote: > > > > > I am considering a use case where a complex UI rendering loop is linked > to an Announcement, which is being fired rapidly (eg < 1ms), and overall > system performance suffers. However the UI rendering loop really only needs > to execute every 100ms since that is sufficient for a user to perceive an > immediate response to their action. So I have rolled-my-own way to achieve > this for which I was looking for some feedback... > > > > 1. Is there any existing feature in Pharo I have missed that can limit > the firing rate of an announcement ? > > not that I know :) > > > 2. Would this be useful to others as a feature to ship with Pharo ? (so > I don't have to roll-my-own, and it gets more experienced eyes to ensure > its right :) ) > > > 3. General comments on my approach, improvements, alternatives. > > > > By way of a use case using Workspace, execute... > > ------------- > > | announcer mainCount uiCount | > > announcer := Announcer new. "RateLimitingAnnouncer new." > > mainCount := uiCount := 0. > > Transcript crShow: 'ui' ; tab; show: 'main' . > > announcer subscribe: AnnouncementMockA do: > > [ uiCount := uiCount + 1. > > "Imagine a longer duration UI rendering loop here" > > Transcript crShow: uiCount asString , ' ' , mainCount asString. > > ]. > > [ 10000 timesRepeat: > > [ mainCount := mainCount + 1. > > "(Delay forMilliseconds: 1 ) wait." > > announcer announce: AnnouncementMockA new. ] > > ] timeToRun . > > ------------- > > With 'Announcer' this takes 10 seconds to execute with the last lines > being... > > 9999 9999 > > 10000 10000 > > > > Replacing 'Announcer' with my own 'RateLimitingAnnouncer' listed below, > this takes 20 milliseconds with the last lines being... > > ui main > > 1 1 > > 2 10000 > > > > Uncommenting the "Delay" takes 30 seconds for Announcer - and 15 seconds > for RateLimitingAnnouncer with last lines of... > > 289 9935 > > 290 10000 > > > > > > Here is my code wrapping #announce: and #initialize... > > ----- > > Announcer subclass: #RateLimitingAnnouncer > > instanceVariableNames: 'maxRateMilliSeconds queuedCounts' > > classVariableNames: '' > > poolDictionaries: '' > > category: 'LEKtrek-Core' > > ----- > > RateLimitingAnnouncer >>initialize > > super initialize . > > maxRateMilliSeconds := 100. > > queuedCounts := Dictionary new. > > ----- > > RateLimitingAnnouncer >>announce: anAnnouncement > > | announcementClass | > > > > "Track how many announcements fired since reset at end of forked Delay" > > announcementClass := anAnnouncement class. > > queuedCounts at: announcementClass > > ifPresent: [ :count | queuedCounts at: announcementClass put: > count + 1 ] > > ifAbsent: [ queuedCounts at: announcementClass put: 1 ]. > > > > "At first announcement since Delay'ed reset, forward this one and set > up Delay to condense subsequent ones. " ( (queuedCounts at: > announcementClass) = 1 ) ifTrue: > > [ [ "fire one announcement only for any announcement > arriving within delay period." > > (Delay forMilliseconds: maxRateMilliSeconds) wait. > [ (queuedCounts at: announcementClass) > 1 ] whileTrue: [ > "At least one announcement arrived before end of Delay. Forward one > announcement only and repeat" queuedCounts at: > announcementClass put: 1. > > super announce: anAnnouncement. > > (Delay forMilliseconds: maxRateMilliSeconds) wait. > ]. > > queuedCounts at: announcementClass put: 0. > > ] fork. ^ super announce: anAnnouncement. ]. > > ----- > > > > cheers -ben > > > > > > >

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[Pharo-project] Pharo Association: alone we have little power, but many we are strong
by StÃ©phane Ducasse Jan. 20, 2013

Jan. 20, 2013

Hi guys Just a point: Join the Pharo association because all together we can get some power. For example, I would like that we brainstorm about what kind of effort the association want to sponsor. - real headless image - other network protocols -â¦ So far we are 35 but I really dream about a moment where we will be much more. If you find some value to Pharo and you want to encourage its evolution, this is simple. Stef

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[Pharo-project] How to load PetitParser UI in 1.4?
by Norbert Hartl Jan. 20, 2013

Jan. 20, 2013

I tried to load version 1.5 of petit parser into a 1.4 image. And I get the error while Glamour is loading announcer already defined in MorphTreeModel Fixing it in the debugger and continue didn't help. I get an exception on opening the petit gui then. Any hints?

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[Pharo-project] squeaksource still down with "502 Proxy Error"
by Denis Kudriashov Jan. 20, 2013

Jan. 20, 2013

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[Pharo-project] RateLimitingAnnouncer
by Ben Coman Jan. 20, 2013

Jan. 20, 2013

I am considering a use case where a complex UI rendering loop is linked to an Announcement, which is being fired rapidly (eg < 1ms), and overall system performance suffers. However the UI rendering loop really only needs to execute every 100ms since that is sufficient for a user to perceive an immediate response to their action. So I have rolled-my-own way to achieve this for which I was looking for some feedback... 1. Is there any existing feature in Pharo I have missed that can limit the firing rate of an announcement ? 2. Would this be useful to others as a feature to ship with Pharo ? (so I don't have to roll-my-own, and it gets more experienced eyes to ensure its right :) ) 3. General comments on my approach, improvements, alternatives. By way of a use case using Workspace, execute... ------------- | announcer mainCount uiCount | announcer := Announcer new. "RateLimitingAnnouncer new." mainCount := uiCount := 0. Transcript crShow: 'ui' ; tab; show: 'main' . announcer subscribe: AnnouncementMockA do: [ uiCount := uiCount + 1. "Imagine a longer duration UI rendering loop here" Transcript crShow: uiCount asString , ' ' , mainCount asString. ]. [ 10000 timesRepeat: [ mainCount := mainCount + 1. "(Delay forMilliseconds: 1 ) wait." announcer announce: AnnouncementMockA new. ] ] timeToRun . ------------- With 'Announcer' this takes 10 seconds to execute with the last lines being... 9999 9999 10000 10000 Replacing 'Announcer' with my own 'RateLimitingAnnouncer' listed below, this takes 20 milliseconds with the last lines being... ui main 1 1 2 10000 Uncommenting the "Delay" takes 30 seconds for Announcer - and 15 seconds for RateLimitingAnnouncer with last lines of... 289 9935 290 10000 Here is my code wrapping #announce: and #initialize... ----- Announcer subclass: #RateLimitingAnnouncer instanceVariableNames: 'maxRateMilliSeconds queuedCounts' classVariableNames: '' poolDictionaries: '' category: 'LEKtrek-Core' ----- RateLimitingAnnouncer >>initialize super initialize . maxRateMilliSeconds := 100. queuedCounts := Dictionary new. ----- RateLimitingAnnouncer >>announce: anAnnouncement | announcementClass | "Track how many announcements fired since reset at end of forked Delay" announcementClass := anAnnouncement class. queuedCounts at: announcementClass ifPresent: [ :count | queuedCounts at: announcementClass put: count + 1 ] ifAbsent: [ queuedCounts at: announcementClass put: 1 ]. "At first announcement since Delay'ed reset, forward this one and set up Delay to condense subsequent ones. " ( (queuedCounts at: announcementClass) = 1 ) ifTrue: [ [ "fire one announcement only for any announcement arriving within delay period." (Delay forMilliseconds: maxRateMilliSeconds) wait. [ (queuedCounts at: announcementClass) > 1 ] whileTrue: [ "At least one announcement arrived before end of Delay. Forward one announcement only and repeat" queuedCounts at: announcementClass put: 1. super announce: anAnnouncement. (Delay forMilliseconds: maxRateMilliSeconds) wait. ]. queuedCounts at: announcementClass put: 0. ] fork. ^ super announce: anAnnouncement. ]. ----- cheers -ben

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Re: [Pharo-project] [Esug-list] Pharo Association: alone we have little power, but many we are strong
by Igor Stasenko Jan. 19, 2013

Jan. 19, 2013

On 19 January 2013 21:39, stephane ducasse <stephane.ducasse(a)gmail.com> wrote: > Of course I forgot the most important > http://association.smalltalkhub.com > hmm.. this one: http://association.pharo.org/ looks more correct to me. perhaps one that you giving is for testing/developing? > Stef > > On Jan 19, 2013, at 7:05 PM, StÃ©phane Ducasse wrote: > >> Hi guys >> >> Just a point: Join the Pharo association because all together we can get some power. >> For example, I would like that we brainstorm about what kind of effort the association >> want to sponsor. >> - real headless image >> - other network protocols >> -â¦ >> >> So far we are 35 but I really dream about a moment where we will be much more. >> If you find some value to Pharo and you want to encourage its evolution, this is simple. >> >> Stef >> _______________________________________________ >> Esug-list mailing list >> Esug-list(a)lists.esug.org >> http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org > > > _______________________________________________ > Esug-list mailing list > Esug-list(a)lists.esug.org > http://lists.esug.org/mailman/listinfo/esug-list_lists.esug.org -- Best regards, Igor Stasenko.

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[Pharo-project] Where should SmalltalkHub bugs be reported?
by Sean P. DeNigris Jan. 19, 2013

Jan. 19, 2013

Here's a small one... StHub provides a Monticello registration snippet, which is cool: MCHttpRepository location: 'http://smalltalkhub.com/mc/dh83/fisleg/main' user: 'SeanDeNigris' password: '' But in Pharo 2.0, since there is a user but no password, dialogs pop up asking for credentials, which can not be ignored. Since the great majority of uses is for downloading, I think it'd make more sense to leave the username out. Cheers, Sean -- View this message in context: http://forum.world.st/Where-should-SmalltalkHub-bugs-be-reported-tp4663973.… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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