January 2017 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] [Pharo-users] Pharo 5 and retina displays in 2016?
by Tim Mackinnon April 20, 2017

April 20, 2017

Adding this to the Dev user group - is there really no solution for this? I read a few old messages from 2012 about different fonts but nothing seemed to work from what I could see. Has everyone just been putting up with the fuzziness and got used to it? As a new Retina display user, I love the clarity in other apps and find it quite jarring in Pharo. I was going to do a brown bag session on Smalltalk with the current team Iâm working with, however as they all have retina Macs, I think I may reconsider this as unless you love the language its another thing for people to throw stones at. As Stephan mentions below, were Tobiasâ changes not viable? Is there anything we can do to help get them safely in - or can I try it on an experimental branch? Tim > On 29 Nov 2016, at 21:02, Stephan Eggermont <stephan(a)stack.nl> wrote: > > On 29/11/16 00:34, Tim Mackinnon wrote: >> Or is this still the same issue thatâs been hanging around for a long >> time as its hard to easily fix? > > Tobias Pape wrote some vm changes that solved the problem this summer, and they somehow interfered, so were reverted. I posted some pictures > on twitter 10/11-7 of it working with both Pharo & Squeak. > > Stephan > > > >> Hi Guys - its been a while since Iâve had a chance to get back into some coding in Smalltalk, and took the plunge again with a new laptop and Pharo 5, however the screen is really blurry? >> >> Doing a google search, I can see this same question raised back in 2012, but has there been no progress in this intervening years or has a workaround not been documented for google to find? Or has everyone just got used to it, and I need to hand in there... >> >> I have tried using a different font - but not sure what constitutes a true-type font (are these the same as free-type mentioned in the Settings Browser?). Has anyone found a font that makes everything look crisp (I tried Helvetica but its only marginally better). >> >> Or is this still the same issue thatâs been hanging around for a long time as its hard to easily fix? >> >> Tim

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Some test where Spur more slow than Cog
by Denis Kudriashov April 12, 2017

April 12, 2017

Hi. I found case where Spur more slow than Cog. Not much but. prototype := BorderedMorph new. result := [prototype veryDeepCopy ] benchFor: 2 seconds. In my computer I got: Cog: a BenchmarkResult(16,982 iterations in 2 seconds 1 millisecond. 8,487 per second) Spur: a BenchmarkResult(12,507 iterations in 2 seconds 33 milliseconds. 6,152 per second). Is it expected behavior for such case?

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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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Any idea for a cool name for the remote tool suite?
by stepharong Feb. 26, 2017

Feb. 26, 2017

Hi guys Since we will push the remote tools (videos/web...) I would like to get some ideas for a cool name. Any ideas? Because Pharmide (looks like medicine or chemical product). Since I vaguely remember some german Pharmide made me think about Fern(sehen) but this is not a good name. Stef --

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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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***Important*** Snapcraft pharo package for Pharo 50
by Stephane Ducasse Feb. 21, 2017

Feb. 21, 2017

Hi pharoers I want to share with you my experience with trying to use Pharo at the University here on Linux. I think that they are on Ubuntu and ... the sys admin told me that they cannot install Pharo :( Since I'm not expert in Linux install I cannot help ;( So we will probably use windows. Now they told me that what would be nice is to get a snap for Pharo based on snapcraft.io. Does any of you have a snap description or willing to help so that we can get a snap for Pharo50? then for Pharo60? Stef

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Working with critiques in Calypso
by Yuriy Tymchuk Feb. 13, 2017

Feb. 13, 2017

Hi everyone, this question is mainly for Denis, but others may be also interested to participate. So Iâd really like to switch to Calypso, but I use Nautilus to eat my own dog food (the critiques). Calypso already adds critiques for methods, but it misses the ones for classes and packages. The point is that you can use anObject annotateRubricText: textModel. And anObject can be anything: a method, or a class, or a package (or theoretically any other object object). Iâve tried to expand highlighting to classes and methods in Nautilus, but it looks like a complete hell. In Calypso itâs much better, but maybe from the experience of the main developer, the styling can be pulled up somewhere higher in the hierarchy. Now it turns out that the bottom plugin is actually useful, as you can get the idea about the issue without having to power or do some other actions. Will it be possible to have some king of a plugin like that in Calypso. And simultaneously is it possible to have a changeable height? Because usually you donât have more than 1-2 critiques, and often you donât have any, so it does not make any sense to occupy so much space with an empty list. (sadly in Nautilus I cannot shrink the plugin dynamically). Cheers. Uko

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Pharo 6 update catalog entries
by Torsten Bergmann Feb. 7, 2017

Feb. 7, 2017

Hi, in preparation of upcoming Pharo 6 release we already should do a pass on all our external loadable projects: - load them into Pharo 6 to see if they could be loaded cleanly (due to automatic transformation of deprecated messages your packages get dirty when converted) - check if they are already/still working in Pharo 6 by using them - check that the tests are running in Pharo 6 - check that we have a proper config with catalog methods and that the latest config is in the MetaRepoForPharo60 repository http://smalltalkhub.com/#!/~Pharo/MetaRepoForPharo60 I did a pass over most projects I implemented or contributed to and we now have much more Pharo 6 based projects in catalog: - Units, Artefact - EventRecorder, Bugzilla, PunQlite, HubCap, VistaCursors, INIFile - Pomodoro, DesktopManager, QuickAccess, WebBrowser, MessageFlowBrowser - ScriptManager (now with icons) - Tealight, Teapot, Nginx, NPMJS, GitHubAPI, FogBugz - OSWindows, OSOSX, OSUnix, OSLinuxCentOS, OSLinuxUbuntu, OSRaspbian - ... You should do the same with your projects! Also if you have a project on SqueakSource, STHub or GitHub that is not yet in the catalog it would be good to provide a ConfigurationOf... with a catalog description. Using Versionner it is easy to create one or generate the required catalog methods. This would give more visibility to your projects! Thanks T.

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