February 2015 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] How Far We've Come!

by Sven Van Caekenberghe

Thanks, Sean, for these nice words. I especially like all the young people covering a wide range of projects, there is too much to track in detail. And, yes, we missed you ! > On 24 Feb 2015, at 22:28, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > > It was so much fun watching the Pharo Days videos! Thanks for recording them > and I hope to be there next time :) > > Somewhere halfway through the playlist, it hit me how easily I was > downloading all the projects and images being talked about. I was > copy/pasting one-line Metacello scripts out of github READMEs, clicking in > the Configuration Browser, or downloading the latest code from CI - and it > all "just worked"!!! > > Remember not too long ago when we were passing around custom scripts to load > multiple dependent packages, and explaining to outsiders that "we don't need > github because Smalltalk invented SCM" (or whatever) while we created the > future invisibly, hidden away from the rest of the world? > > After laying down so many building blocks (like FileSystem) that take the > system out of the way of creative expression, it is exciting to finally be > tackling some of the high-impact things... you know the ones we've been > avoiding... like Morphic, development tools, and the text editors. > > And the steady streams of new talent and funding seem likely to keep the > successes coming. > > So CONGRATULATIONS, Pharo Community!!!! We deserve it. > > Now get back to work - we've got a future to create ;) > > > > ----- > Cheers, > Sean > -- > View this message in context: http://forum.world.st/How-Far-We-ve-Come-tp4807408.html > Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. >

Feb. 24, 2015

Doubt about NumericalMethods package

by Sebastian Tleye

Hi, I've installed the NumericalMethods package and I am trying to use the class DhbMultiVariableGeneralOptimizer to optimize a function. If I run the code of the test it works perfectly | fBlock finder result | fBlock := [ :x | |r| r := x * x. r = 0 ifTrue: [ 1] ifFalse: [ r sqrt sin / r] ]. finder := DhbMultiVariableGeneralOptimizer maximizingFunction: fBlock. finder desiredPrecision: 0.01. finder origin: #(0.2 0.2 0.2) asVector; range: #(1 1 1) asVector. result := finder evaluate. however, if I want to set my own function, (for example the sum of the elements of the parameter. fBlock := [ :x | x sum ]) it is throwing an error of ScriptOutOfBounds I am not sure If I am doing something wrong or there is a bug in the implementation. I haven't found too much documentation about how to use this package. Is there someone using this particular class? Thanks in advance! -- SebastiÃ¡n Tleye

Feb. 24, 2015

How Far We've Come!

by Sean P. DeNigris

It was so much fun watching the Pharo Days videos! Thanks for recording them and I hope to be there next time :) Somewhere halfway through the playlist, it hit me how easily I was downloading all the projects and images being talked about. I was copy/pasting one-line Metacello scripts out of github READMEs, clicking in the Configuration Browser, or downloading the latest code from CI - and it all "just worked"!!! Remember not too long ago when we were passing around custom scripts to load multiple dependent packages, and explaining to outsiders that "we don't need github because Smalltalk invented SCM" (or whatever) while we created the future invisibly, hidden away from the rest of the world? After laying down so many building blocks (like FileSystem) that take the system out of the way of creative expression, it is exciting to finally be tackling some of the high-impact things... you know the ones we've been avoiding... like Morphic, development tools, and the text editors. And the steady streams of new talent and funding seem likely to keep the successes coming. So CONGRATULATIONS, Pharo Community!!!! We deserve it. Now get back to work - we've got a future to create ;) ----- Cheers, Sean -- View this message in context: http://forum.world.st/How-Far-We-ve-Come-tp4807408.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Feb. 24, 2015

Re: [Pharo-dev] Error in MonitorDelay>>#signalLock:afterMSecs:inMonitor:queue:

by Nicolai Hess

2015-02-24 20:45 GMT+01:00 Juraj Kubelka <juraj.kubelka(a)gmail.com>: > Well, basically it is enough to add #yourself in to the class method: > > signalLock: aSemaphore afterMSecs: anInteger inMonitor: aMonitor queue: > anOrderedCollection > anInteger < 0 ifTrue: [self error: 'delay times cannot be negative']. > ^ (self new setDelay: anInteger forSemaphore: aSemaphore monitor: aMonitor > queue: anOrderedCollection) schedule; *yourself* > > But I am wondering if it is the only one affected method. > If someone agree with this solution, I can create test case and slice. > > Cheers, > Juraj > Yes, this has changed (see multiple issues on fogbugz). Ben Coman uses the return value in WorldState>>#interCyclePause: for tesing if the delay has been scheduled. I think there is a good chance that Monitor is the only class that expects the Delay as the return value. So, yes, please create a fix with your proposed solution. - or wait for Ben to comment on this :) nicolai > > 24. 2. 2015 v 16:36, Juraj Kubelka <juraj.kubelka(a)gmail.com>: > > Hi! > > I have a problem in the recent Pharo 4 image: the method > MonitorDelay>>#signalLock:afterMSecs:inMonitor:queue: returns a boolean > instead of MonitorDelay object. > And in the method Monitor>>#exitAndWaitInQueue:maxMilliseconds: it raises > message not understood on #unschedule. > > Pharo #40505. > > -=-=- > | monitor | > monitor := Monitor new. > monitor critical: [ monitor waitWhile: [ true ] maxMilliseconds: 200 ]. > -=-=- > > Is it known error? Someone is changing Monitor or related code? > Thanks, > Juraj > > >

Feb. 24, 2015

Re: [Pharo-dev] Error in MonitorDelay>>#signalLock:afterMSecs:inMonitor:queue:

by Juraj Kubelka

Well, basically it is enough to add #yourself in to the class method: signalLock: aSemaphore afterMSecs: anInteger inMonitor: aMonitor queue: anOrderedCollection anInteger < 0 ifTrue: [self error: 'delay times cannot be negative']. ^ (self new setDelay: anInteger forSemaphore: aSemaphore monitor: aMonitor queue: anOrderedCollection) schedule; yourself But I am wondering if it is the only one affected method. If someone agree with this solution, I can create test case and slice. Cheers, Juraj > 24. 2. 2015 v 16:36, Juraj Kubelka <juraj.kubelka(a)gmail.com>: > > Hi! > > I have a problem in the recent Pharo 4 image: the method MonitorDelay>>#signalLock:afterMSecs:inMonitor:queue: returns a boolean instead of MonitorDelay object. > And in the method Monitor>>#exitAndWaitInQueue:maxMilliseconds: it raises message not understood on #unschedule. > > Pharo #40505. > > -=-=- > | monitor | > monitor := Monitor new. > monitor critical: [ monitor waitWhile: [ true ] maxMilliseconds: 200 ]. > -=-=- > > Is it known error? Someone is changing Monitor or related code? > Thanks, > Juraj >

Feb. 24, 2015

Error in MonitorDelay>>#signalLock:afterMSecs:inMonitor:queue:

by Juraj Kubelka

Hi! I have a problem in the recent Pharo 4 image: the method MonitorDelay>>#signalLock:afterMSecs:inMonitor:queue: returns a boolean instead of MonitorDelay object. And in the method Monitor>>#exitAndWaitInQueue:maxMilliseconds: it raises message not understood on #unschedule. Pharo #40505. -=-=- | monitor | monitor := Monitor new. monitor critical: [ monitor waitWhile: [ true ] maxMilliseconds: 200 ]. -=-=- Is it known error? Someone is changing Monitor or related code? Thanks, Juraj

Feb. 24, 2015

OSProcess bug ?

by jannik laval

Hi pharoers, I am playing with OSProcess. I am using an example, and I am annoyed with a strange bug: Here is the code I want to execute, and does not work: ==== |thread process output| myCmd := 'rostopic bw /turtle1/pose'. thread := [process := (PipeableOSProcess command: myCmd) ] fork. 3 second wait. output := process upToEnd. output inspect. thread terminate. === 'rostopic bw /turtle1/pose' is a command that is a loop displaying the current bandwidth of a ROS process. In a terminal, it works fine. With OSProcess the output value is empty. My source code is correct: if I replace myCmd by : myCmd := 'ping localhost'. It is a loop too, and it returns a correct string. I have clearly no idea of where I have to search... Any help or discussion about that would be great :) Thank you, Oups, some infos: I am using Ubuntu 14.04 Pharo3.0 with Moose 5.0, latest update: #30863 The script I use (rostopic) is a python script (does it impact ?) -- ~~Jannik Laval~~ Ãcole des Mines de Douai Enseignant-chercheur http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info http://car.mines-douai.fr/

Feb. 24, 2015

Re: [Pharo-dev] Super fast delay

by Ben Coman

I've updated this fix for build 40504. The following slice is read for review. SLICE-Issue-14353-Delay-refactoring-part-2---change-from-milliseconds-to-microseconds-BenComan.6 Even if you do not feel up to reviewing the code, it would be good for a few people to merge this to get a broad sample of symptoms fixed or caused. 1. Open up Monticello and get ready to load the above slice from Pharo4Inbox repository. 2. In a workspace, do "Delay stopTimerEventLoop". Ignore the #intercyclePause: message that stream by. 3. Merge slice. 4. In a workspace, do "Delay startTimerEventLoop". The stream of #interCyclePause message should fade. 5. Operate as you normally would. Test some cases that previously caused an error. cheers -ben On Thu, Feb 19, 2015 at 11:17 PM, Ben Coman <btc(a)openinworld.com> wrote: > > > On Thu, Feb 19, 2015 at 9:50 PM, Ben Coman <btc(a)openinworld.com> wrote: > >> >> >> On Mon, Feb 16, 2015 at 4:01 PM, Holger Hans Peter Freyther < >> holger(a)freyther.de> wrote: >> >>> On Thu, Oct 30, 2014 at 06:32:48PM -0400, stepharo wrote: >>> >>> Good Morning Ben, Stef, >>> >>> > We really need people to have a look at the code of Ben. >>> >>> I downloaded a Pharo-4 image today and executed: >>> >> >> To clarify. The fix is not yet in Pharo-4. >> >> >>> >>> time pharo --nodisplay --headless ./Pharo-40490.image eval "(Delay >>> forSeconds: 5) wait" >>> a Delay(5000 msecs) >>> >>> real 0m1.254s >>> user 0m1.192s >>> sys 0m0.060s >>> >>> >>> So the first delay doesn't appear to wait the five seconds. I >>> would like to work on kqueue/epoll and remove polling and it >>> looks this involves code with Delay as well. I wonder if you >>> could provide an overview of what needs to be done and what is >>> done? >>> >> >> The pre-requisite issue 14942 is waiting for review. It really should >> take only 10 minutes to review... >> 1. In latest Pharo 4, inspect "Delay newCodeEnabled" and observe that it >> is "true". >> 2. Open the Pharo4Inbox and filter on 14942. >> 3. Select newest slice and <Merge>. >> 4. Observe the diff shows all "false" parts removed (it doesn't really >> get much simpler than this to review). >> 5. Click <merge> to finish. >> 6. Observe the image continues to run smoothly. >> 7. Report your observations on >> https://pharo.fogbugz.com/default.asp?14942 >> > > btw, after the cleanup done by Issue 14942, Issue 14966 can delete ten > class variables from Delay. > When 14942 is integrated, can 14966 be integrated very soon after that. I > am basing the change of Delay to microsecond delay off 14966. > cheers -ben > > > > >> >> I need to refresh myself on the fix I did back in 2-Dec. Its languished >> while some support infrastructure was added to help the system ride-through >> the change. >> >> cheers -ben >> > >

Feb. 24, 2015

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/40505 Home: https://github.com/pharo-project/pharo-core

Feb. 24, 2015

[pharo-project/pharo-core] bae6b6: 40505

by GitHub

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: bae6b613b78ba1afa63218d5768c46808fae0cea https://github.com/pharo-project/pharo-core/commit/bae6b613b78ba1afa63218d5… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2015-02-24 (Tue, 24 Feb 2015) Changed paths: A Compiler.package/EncoderForSistaV1.class/class/instruction stream support/nonExtensionBytecodeAt_in_.st A Compiler.package/EncoderForV3PlusClosures.class/class/instruction stream support/nonExtensionBytecodeAt_in_.st M Kernel.package/CompiledMethod.class/class/class initialization/initialize.st A Kernel.package/CompiledMethod.class/class/instance creation/headerFlagForEncoder_.st M Kernel.package/CompiledMethod.class/definition.st M Kernel.package/CompiledMethod.class/instance/accessing/clearFlag.st A Kernel.package/CompiledMethod.class/instance/accessing/clearSignFlag.st M Kernel.package/CompiledMethod.class/instance/accessing/encoderClass.st M Kernel.package/CompiledMethod.class/instance/accessing/flag.st M Kernel.package/CompiledMethod.class/instance/accessing/frameSize.st M Kernel.package/CompiledMethod.class/instance/accessing/numArgs.st M Kernel.package/CompiledMethod.class/instance/accessing/numLiterals.st M Kernel.package/CompiledMethod.class/instance/accessing/numTemps.st M Kernel.package/CompiledMethod.class/instance/accessing/primitive.st A Kernel.package/CompiledMethod.class/instance/accessing/setSignFlag.st M Kernel.package/CompiledMethod.class/instance/debugger support/prepareForSimulationWith_.st M Kernel.package/CompiledMethod.class/instance/initialize-release/setFrameBit_.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script505.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40505.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 40505 14980 Method missing to decode bytecode set https://pharo.fogbugz.com/f/cases/14980 14979 Fixes for SistaV1 bytecode set https://pharo.fogbugz.com/f/cases/14979 http://files.pharo.org/image/40/40505.zip

Feb. 24, 2015