December 2016 - Pharo-dev - lists.pharo.org

How to install Iceberg?
by Alexandre Bergel March 29, 2017

March 29, 2017

Hi all! I would like to give a try to Iceberg. I have no idea where to find it however. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Too frequent crashes :-(
by Alexandre Bergel March 16, 2017

March 16, 2017

Hi! Vincent and I are experiencing many crashes from GrafPort>copyBits. It crashes every couple of minutes. I know that not much can be done so far. Stability is my biggest concern with Pharo :-( I use the latest VM. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Epicea user experience report
by Ben Coman Feb. 27, 2017

Feb. 27, 2017

1. Created fresh Pharo image (build 60269) 2. Opened World > Tools > Epicea > All changes Points for discussion... a. How many submenu items are expected for Epicea? Can we push the current ones up so the Tools menu remains a flat menu. b. Do we need the two current menu items? "Current session" is encompassed by "All changes"? What expectations do people have of how often they'll use the former rather than the latter? c. When people move from Pharo 5 to Pharo 6 and in a panic want to "recover changes" for a crashed image, they'll be looking for that familiar feature name, not a new app name. Could the app name be left out or placed in brackets "Changes (Epicea)". btw, the interface looks really slick! nice work. 3. Opened World > System Browser. 4. Added package AAA All Changes window - no dynamic change. On <refresh>, still no change, i.e. no sessions #New All Changes window - not visible, no sessions. 5. Added class AA. All Changes window - no dynamic change. On <refresh>, shows new session with AAA & AA. 5. Added method... AA>a ^'something' Prompted for author, entered 'BenComan' All Changes window with session selected - dynamic update showing AA>>a. 6. Added package BBB. All Changes window - no dynamic update. On <refresh>, BBB still not visible in session. 7. Added class A to package AAA. All Changes window - dynamic update showing A. On <refresh>, BBB still not visible in session. 8. Added class BB to package BBB. All Changes window - dynamic update showing BBB & BB. a. Package creation event seems not handled properly, being only pushed through when a class is created in it. b. Since there is a dynamic update for class and method modifications, could the session creation also dynamically update it UI. ----------- 9. Killed the vm from command line $ ps -ef | grep pharo $ kill 29349 Restarted Pharo image 10. World > Tools > Epica > All changes. Authorship is inconsistent: * AAA and AA have blank author * AA>>a, A, BBB, B have author 'BenComan'. a. I understand this follows on from Author not being requested until the first method was defined. Did the old changes track the author of packages and classes at all? b. Since Epicea can track package and class authors, can we trigger the author prompt earlier for them? 11. Selected all previous changes AAA, AA, AA>>a, A, BBB, BB and did <Apply Changes>. Prompted for author. Entered 'DrWho' Existing All Changes window - no change New All Changes window - shows new session with all six changes. Authorship is a little inconsistent: * AAA and AA have author 'Unknown'. * AA>>a, A, BBB, B have blank author. 12. Killed the vm from command line $ ps -ef | grep pharo $ kill 30696 Restarted Pharo image 13. World > Tools > Epica > All changes. Authorship is a little inconsistent: First session * AAA and AA have blank author * AA>>a, A, BBB, B have author 'BenComan'. Second session * AAA and AA have blank author * AA>>a, A, BBB, B have author 'DrWho'. a. Epicea changes are reapplied as the current author. This seems a semantic change from Pharo 5 where changes were reapplied as their original author. Is this accidental or by design? Can we have some community discussion on this point (I don't remember seeing any)? cheers -ben P.S. I'll wait to see what arises out of discussion before creating any issues.

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Problem with OSSubprocess / signals / heartbeat ?
by Mariano Martinez Peck Feb. 24, 2017

Feb. 24, 2017

Hi guys, There is a bug happening in OSSubprocess since quite some time which we were never able to fix. What happens is that at certain point (after having used OSSubprocess for a while), a simple command like the following would "hang" Pharo: OSSUnixSubprocess new command: 'ls'; arguments: #(); redirectStdout; runAndWaitOnExitDo: [ :process :outString | outString ] Once the image does that, it keeps doing it in a 80% of the cases (so it is easy enough to debug). Guille Polito kept one of these images if someone can give us a hand. He also proposed the great idea of using `strace` to see what was going on. He (together with Pable Tesone) suspected that the heartbeat could be interrupting the `clone()` function which is (I think) called internally by the 'posix_spawn()' which is the one used by OSSubprocess. When these images are "hung" they found at a infinitive loop like this: [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 593498}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 600126}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 606282}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 612528}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 618689}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 624922}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 631145}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 637241}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 643578}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 17477] gettimeofday({1482152630, 649974}, NULL) = 0 [pid 17477] sigreturn() (mask []) = 120 [pid 17477] clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf7578768) = ? ERESTARTNOINTR (To be restarted) [pid 17477] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- As you can see, there is a SIGALARM involved. It also looks like the `gettimeofday` is used by the heartbeat ? Could it be that someone the heartbeat is interrupting the `clone()` ? Guille also showed me the `strace` output with a regular / working image: [pid 18647] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- [pid 18647] gettimeofday({1482152829, 481014}, NULL) = 0 [pid 18647] sigreturn() (mask []) = -1 EINTR (Interrupted system call) [pid 18647] getitimer(ITIMER_REAL, {it_interval={0, 2000}, it_value={0, 1917}}) = 0 [pid 18647] recvmsg(3, 0xff7b0734, 0) = -1 EAGAIN (Resource temporarily unavailable) [pid 18647] select(4, [3], [], [3], {0, 1000}) = 0 (Timeout) [pid 18647] getitimer(ITIMER_REAL, {it_interval={0, 2000}, it_value={0, 797}}) = 0 [pid 18647] recvmsg(3, 0xff7b0734, 0) = -1 EAGAIN (Resource temporarily unavailable) [pid 18647] select(4, [3], [], [3], {0, 1000}) = ? ERESTARTNOHAND (To be restarted if no handler) [pid 18647] --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} --- Does anyone have any hint here? Thanks in advance, -- Mariano http://marianopeck.wordpress.com

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PharoLauncher Hanging
by Sean P. DeNigris Feb. 5, 2017

Feb. 5, 2017

I just had Launcher hang (Mac's spinning beach ball of death) twice in a row after launching a 5.0 image with "quit on launch" disabled. Let me know if you need any other information. OS X 10.10.5 Image ----- Pharo5.0 Latest update: #50760 Virtual Machine --------------- /Applications/Pharo.app/Contents/MacOS/Pharo CoInterpreter VMMaker.oscog-eem.1855 uuid: d8e4a3c2-a3bf-4adc-b224-8012903a1ef4 May 4 2016 StackToRegisterMappingCogit VMMaker.oscog-eem.1855 uuid: d8e4a3c2-a3bf-4adc-b224-8012903a1ef4 May 4 2016 https://github.com/pharo-project/pharo-vm.git Commit: b8ec25a570d7539653e1d793e97609adb509aaed Date: 2016-05-04 11:14:22 +0200 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #589 Mac Cocoa Cog 5.8b12 21-Sep-10 >1B0534FA-246C-47C5-AB29-7A76C81CCDCB< VMMaker versionString https://github.com/pharo-project/pharo-vm.git Commit: b8ec25a570d7539653e1d793e97609adb509aaed Date: 2016-05-04 11:14:22 +0200 By: Esteban Lorenzano <estebanlm(a)gmail.com> Jenkins build #589 CoInterpreter VMMaker.oscog-eem.1855 uuid: d8e4a3c2-a3bf-4adc-b224-8012903a1ef4 May 4 2016 StackToRegisterMappingCogit VMMaker.oscog-eem.1855 uuid: d8e4a3c2-a3bf-4adc-b224-8012903a1ef4 May 4 2016 ----- Cheers, Sean -- View this message in context: http://forum.world.st/PharoLauncher-Hanging-tp4901674.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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Re: [Pharo-dev] genJumpLong: distance index 1043 is out of range -1024 to 1023
by ClÃ©ment Bera Jan. 19, 2017

Jan. 19, 2017

Hi, This will be fixed by using the alternative bytecode set, likely in the next few weeks in Pharo 6 alpha/beta. Basically control flow messages (ifTrue:, to:do:, etc.) cannot have too many statements in their blocks (ifTrue: argument, to:do: second arguments, etc) or the compiler can't compile them due to bytecode set encoding limitation. The new bytecode set is encoded differently and allows such code to be compiled. As a temporary solution, you need to split your code in multiple methods to lower the number of statements inside blocks inside control flow messages. Sorry for the annoyance. We're working on integrating a solution and we believe that this will be integrated in Pharo 6 in the next few weeks. Regards, Clement On Wed, Dec 7, 2016 at 4:14 PM, Davide Varvello via Pharo-dev < pharo-dev(a)lists.pharo.org> wrote: > > > ---------- Forwarded message ---------- > From: Davide Varvello <varvello(a)yahoo.com> > To: pharo-dev(a)lists.pharo.org > Cc: > Date: Wed, 7 Dec 2016 07:14:35 -0800 (PST) > Subject: genJumpLong: distance index 1043 is out of range -1024 to 1023 > Hi, > > Sometimes (and also today) after formatting and saving a method, an Error > is > thrown. > Following a chunk of PharoDebug.log > > TIA > Davide > > > --------------------- > THERE_BE_DRAGONS_HERE > Error: genJumpLong: distance index 1043 is out of range -1024 to 1023 > 7 December 2016 4:21:53.0426 pm > > VM: Mac OS - intel - 1096 - CoInterpreter > VMMaker.oscog-HolgerHansPeterFreyther.1880 uuid: > 16138eb3-2390-40f5-a6c8-15f0494936f8 Sep 30 2016 > StackToRegisterMappingCogit VMMaker.oscog-HolgerHansPeterFreyther.1880 > uuid: > 16138eb3-2390-40f5-a6c8-15f0494936f8 Sep 30 2016 > https://github.com/pharo-project/pharo-vm.git Commit: > 06744effac0f0aa3b4b32e17636448f9d51d6707 Date: 2016-09-30 08:40:43 +0200 > By: > GitHub <noreply(a)github.com> Jenkins build #603 > > Image: Pharo5.0 [Latest update: #50763] > > OpalEncoderForV3PlusClosures(Object)>>error: > Receiver: an OpalEncoderForV3PlusClosures > Arguments and temporary variables: > aString: 'genJumpLong: distance index 1043 is out > of range -1024 to 1023' > Receiver's instance variables: > stream: an IRBytecodeGenerator > position: nil > rootNode: nil > blockExtentsToLocals: nil > > > OpalEncoderForV3PlusClosures(OpalBytecodeEncoder)>> > outOfRangeError:index:range:to: > Receiver: an OpalEncoderForV3PlusClosures > Arguments and temporary variables: > string: 'distance' > index: 1043 > rangeStart: -1024 > rangeEnd: 1023 > Receiver's instance variables: > stream: an IRBytecodeGenerator > position: nil > rootNode: nil > blockExtentsToLocals: nil > > > OpalEncoderForV3PlusClosures(OpalEncoderForV3)>>genJumpLong: > Receiver: an OpalEncoderForV3PlusClosures > Arguments and temporary variables: > distance: 1043 > Receiver's instance variables: > stream: an IRBytecodeGenerator > position: nil > rootNode: nil > blockExtentsToLocals: nil > > > OpalEncoderForV3PlusClosures(OpalEncoderForV3)>>genJump: > Receiver: an OpalEncoderForV3PlusClosures > Arguments and temporary variables: > distance: 1043 > Receiver's instance variables: > stream: an IRBytecodeGenerator > position: nil > rootNode: nil > blockExtentsToLocals: nil > > > > -- > View this message in context: http://forum.world.st/ > genJumpLong-distance-index-1043-is-out-of-range-1024-to- > 1023-tp4926103.html > Sent from the Pharo Smalltalk Developers mailing list archive at > Nabble.com. > > >

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error "please insert disk" (windows vm)
by Nicolai Hess Jan. 15, 2017

Jan. 15, 2017

we have the following bug report 16928 <https://pharo.fogbugz.com/f/cases/16928/no-disk-in-the-drive-reply-to-World…> "no disk in the drive" reply to World | Save As (and other places) "On a clean Pharo4.0 #40618 image, on Windows 7 World Menu | Save As brings up a modal alert window, "There is no disk in the drive. Please insert a disk into drive <etc>" On my system, it does this 4 times. I'm assuming that each instance refers to one of the card-reader drives which are attached, but without a card inserted. This is a pain to deal with every single time a File Browser or World | Save As dialog is opened. Could the alerts either be - only raised when that specific drive is requested by a user action or, less preferably - given by a non-modal window, and fading away after a period" I was able to reproduce this error on squeaks and pharos window vm. (insert a usb card reader, with card, wait some time , remove only the card, every access on this drive, for example open a FileList and scroll to the drive letter). The solution I found is to call SetErrorMode( *SEM_FAILCRITICALERRORS)* I would like to propose the following change to sqwin32directory.c wrap the call to FindFirstFileW/FindNextFileW with UINT prevMode = SetErrorMode(SEM_FAILCRITICALERRORS); call FindFirstFileW/FindNextFileW SetErrorMode(prevMode); ... and call this functions in at least dir_lookup() (the other file/directory methods are save). Alternative solution, we could call the SetErrorMode function once at program start but I don't know if there are other "useful" errors message that we don't want to disable. I tested both solution, both seems to work fine. What do you think?

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[ANN] Pharo Sprint First half 2017
by Marcus Denker Jan. 10, 2017

Jan. 10, 2017

Hi, As this year, there will be again âPharo Sprintsâ next year. At these dates we meet (virtual or real) to work on boring (or complex) issues together: Jan 27 Mar 3 Mar 31 Apr 28 May 26 Jun 30 Local sprints: - University of Chile (DCC). Not January, but likely the other dates - Inria Lille: All - Remote: All. We will try to improve remote sprint experience next year! - The sprints will be added to https://association.pharo.org/events Marcus

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[Ann] Calypso system browser
by Denis Kudriashov Jan. 9, 2017

Jan. 9, 2017

Hi I am glad announce first initial version of new system browser called Calypso. It is implemented from scratch with idea to build model suitable for remote scenario. But as result it leads to more important goal: provide clean implementation of browser which people could understand and evolve. Calypso supports most features from Nautilus but also miss many of them. And there are many not nicely looking parts of UI which require more work. But in same time Calypso provides many new cool features with clean implementation underhood. I put many things from other smalltalks and old browsers which I always miss. I release Calypso in the state where I finish most design decisions which I think important for project evolution. Of course there are a lot of things to do and improve. But browser is fully working. And now it is important to community to participate in project and make browser great again :). We need escape from Nautilus pasta world. Please report any ideas/bugs on github page https://github.com/dionisiydk/Calypso/issues. I already fill it with my wishes. Next step I will work on documentation/class comments and I will publish couple of posts about Calypso internals. Read more details on my blog <http://dionisiydk.blogspot.fr/2016/12/calypso-new-system-browser-for-pharo.…>. It includes pictures, videos and loading script. Best regards, Denis

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Redline: Talking Runtime basics ...
by James Ladd Jan. 3, 2017

Jan. 3, 2017

Hi Pharo People, I have continued work on Redline Smalltalk and I'm wanting to discuss what the absolute minimum set of Classes and method should be included in the Redline Runtime. Would anyone here like to participate in that discussion? - James. Redline Smalltalk <http://redline.st> -- View this message in context: http://forum.world.st/Redline-Talking-Runtime-basics-tp4928375.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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