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Re: [Pharo-dev] saving an image on windows and opening it on mac problems

by phil＠highoctane.be

I'd say that one should clear all fonts being loaded, refresh the list of available fonts because they are on another location (and this should happen even moving from windows to windows), and switch back to a default font that is sure to be available. I got an issue with the "hack" font because the new version changed the file names of the fonts and the system died. That should already solve some problems. Phil On Wed, Apr 26, 2017 at 5:10 PM, Andrei Chis <chisvasileandrei(a)gmail.com> wrote: > Any hints about how to handle Freetype fonts? > Right now I'm getting also some segmentation faults when opening on mac an > image saved on windows, that seem related to Freetype fonts. > > On Wed, Apr 26, 2017 at 5:04 PM, phil(a)highoctane.be <phil(a)highoctane.be> > wrote: > >> You will also face serious fun with Freetype fonts. >> >> Phil >> >> On Wed, Apr 26, 2017 at 3:06 PM, Andrei Chis <chisvasileandrei(a)gmail.com> >> wrote: >> >>> Hi all, >>> >>> I saw that there are a few issues about images saved on an operating >>> system not working when opened on other operating systems: >>> - https://pharo.fogbugz.com/f/cases/19852/Unable-to-open-ima >>> ge-in-OSX-after-it-has-been-updated-in-Windows >>> - https://pharo.fogbugz.com/f/cases/19869/Infinite-loop-on-m >>> ac-when-opening-an-image-saved-on-windows >>> - https://pharo.fogbugz.com/f/cases/19272/Image-freezes-on-L >>> inux-if-it-was-previously-saved-on-Windows >>> - http://forum.world.st/Image-freezes-on-Linux-if-it-was-pre >>> viously-saved-on-Windows-td4903258.html >>> >>> I gave the fix in case 19869 a try and with it I can save an image on >>> windows and open it on mac, however, there are some side effects. >>> First several folders having the following name are created in the image >>> folder: >>> >>> '\Users\andrei\test-image' >>> '\Users\andrei\test-image\pharo-local\' >>> '\Users\andrei\test-image\pharo-local\ombu-sessions' >>> >>> Second, I can only open the image on man once. The second time I get the >>> following stack: >>> >>> [31mPrimitiveFailed: primitive #createDirectory: in WindowsStore failed >>> [0mWindowsStore(Object)>>primitiveFailed: >>> WindowsStore(Object)>>primitiveFailed >>> WindowsStore(DiskStore)>>createDirectory: >>> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >>> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >>> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >>> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >>> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >>> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >>> FileSystem>>ensureCreateDirectory: >>> FileReference>>ensureCreateDirectory >>> OmSessionStore>>resetWithStoreNamed: >>> OmSessionStore>>resetWithNextStoreName >>> OmSessionStore>>store >>> WeakMessageSend>>value >>> WeakMessageSend>>cull: >>> WeakMessageSend>>cull:cull: >>> [ action cull: arg1 cull: announcer ] in LegacyWeakSubscription(WeakAnn >>> ouncementSubscription)>>deliver: in Block: [ action cull: arg1 cull: >>> announcer ] >>> BlockClosure>>on:do: >>> BlockClosure>>on:fork: >>> LegacyWeakSubscription(WeakAnnouncementSubscription)>>deliver: >>> [ tmp4 deliver: arg1 ] in SubscriptionRegistry>>deliver:to:startingAt: >>> in Block: [ tmp4 deliver: arg1 ] >>> BlockClosure>>ifCurtailed: >>> SubscriptionRegistry>>deliver:to:startingAt: >>> SubscriptionRegistry>>deliver:to: >>> SubscriptionRegistry>>deliver: >>> SystemAnnouncer(Announcer)>>announce: >>> SystemAnnouncer>>announce: >>> SystemAnnouncer>>snapshotDone: >>> SessionManager>>snapshot:andQuit: >>> [0m >>> >>> So it seems that OmSessionStore is not reset and holds a reference to a >>> the windows path which it tries to create. >>> >>> Cheers, >>> Andrei >>> >>> >>> >>> >>> >> >

April 26, 2017

Re: [Pharo-dev] Commenting the Session Manager

by Guillermo Polito

Hi Ben, true. This happens because of this line: "create a new session object if we're booting" isImageStarting ifTrue: [ self installNewSession ]. in SessionManager>>snapshot:andQuit: I'd say we should not change this now, but we should fix it for pharo 7. On Tue, Apr 18, 2017 at 6:15 PM, Ben Coman <btc(a)openinworld.com> wrote: > hi Guille, > > Thanks very much for that detailed write up. I have one concern about the > [bracketed] text... > A new session starts when the image starts [or when the image is saved]. > A session ends when the image quits [or it is saved]. > > Doing the following in a playground... > s1 := SessionManager default currentSession. > "Save image without quitting" > s2 := SessionManager default currentSession. > "Save and quit image, then after reloading..." > s3 := SessionManager default currentSession. > s1 == s2. "==> true" > s2 == s3. "==> false" > > So it seems a new session does not start when the image is saved. > With that in minds, can you review my proposed modifications... > https://www.diffchecker.com/FUWg5J8t > > cheers -ben > > On Thu, Apr 13, 2017 at 5:41 PM, Guillermo Polito < > guillermopolito(a)gmail.com> wrote: > >> Hi all, >> >> I took some minutes to write down a class comment for the SessionManager >> class. There was an issue asking for it: >> >> https://pharo.fogbugz.com/f/cases/19463/Improve-SessionManag >> er-class-comment >> >> Since it is an important topic, and sometimes too low level for some >> people, I'd like to have some feedback. Is it well explained? Is there >> something that is key for you and is missing? >> >> I know that the comment is not exhaustive, it can be iterated and >> enhanced, but we can have a nice first version of it for the release. >> >> Thanks, >> Guille >> >> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= >> >> >> I am the object responsible of managing how sessions work in Pharo. >> A session defines the boundaries of work in the image. >> >> A new session starts when the image starts or when the image is saved. >> A session ends when the image quits or it is saved. >> There is only one active session at a single point of time. >> Saving the image causes the active to stop, and starts a new session. >> > > > > > >> >> The current active session is hold by myself, the singleton session >> manager. It can be accessed by doing: >> >> SessionManager default currentSession. >> >> The most important responsibility of the session manager is to manage how >> resources and services in the image are started up and shut down at the >> beginning and end of a session respectively. For example, when the image >> starts, several initialization routines should be executed to make sure >> that the image has access to the graphic drivers, the standard input/output >> file descriptors and so on. >> >> Such initialization happens in the #snapshot:andQuit: method. >> #snapshot:andQuit: will: >> - stop current session >> - save current image if requested >> - quit if requested >> - start a new session >> >> When a session is started, all elements registered in the startup list >> are started up. >> When a session is stopped, all elements registered in the shutdown list >> are shut down. >> >> # Managing Startup and Shutdown lists >> >> The startup and shutdown lists can be accessed through the messages: >> >> SessionManager default startupList. >> SessionManager default shutdownList. >> >> In general terms, the shutdown list is the startup list reversed. >> >> Upon a startup [shutdown], all elements in the startup list are sent the >> message #startup: [#shutdown:] with a boolean as argument that indicates >> wether the image is being saved [closed]. >> >> Internally, startup and shutdown lists are prioritised. Priorities are >> managed by startup categories. By default the session manager includes the >> following categories in decreasing priority order: >> >> - System >> - Network >> - Graphical User Interface >> - Tools >> - User >> >> Categories can be accessed as follows: >> >> SessionManager default categoryNamed: aName. >> >> New categories can be registered in the system using the messages: >> >> SessionManager default createCategory: aCategoryName. >> SessionManager default createCategory: aCategoryName after: >> anotherCategoryName. >> >> Finally, to subscribe some resource handler to the startup shutdown >> lists, we need to subscribe a handler, subclass of AbstractSessionHandler. >> The most common handler implementation so far is the ClassSessionHandler, >> that allows to subscribe a class for startup and shutdown, keeping >> backwards compatibility to the old startup mechanism. >> >> ClassSessionHandler forClassNamed: aClassName >> >> We can register a session handler as follows >> >> SessionManager default >> register: (ClassSessionHandler forClassNamed: self name) >> inCategory: SessionManager default systemCategory. >> Or alternatively, by talking to the corresponding category: >> >> SessionManager default systemCategory register: (ClassSessionHandler >> forClassNamed: self name) >> >> # System Category Priorities >> >> A system category internally prioritizes its elements to provide a fine >> grained control on the startup and shutdown order. >> All methods above have variants that allow developers to specify the >> priority inside the category: >> >> SessionManager default >> register: (ClassSessionHandler forClassNamed: self name) >> inCategory: SessionManager default systemCategory >> atPriority: 100. >> >> SessionManager default systemCategory >> register: (ClassSessionHandler forClassNamed: self name) >> atPriority: 100 >> By default, if no priority is specified, a default priority is used. >> Every category answers to the message #defaultPriority. >> >> # How does an image restart from the point it was before >> >> An important point in the image startup is how does it manage to restart >> from the point where it was executing when it was saved. >> >> When the image is saved, using the snapshot primitive, the entire image >> is freezed at the point of the snapshot. >> More particularly, the process that invoked the snapshot primitive is >> freezed at the point of the primitive call. >> This works as a process fork: the running image will return from the >> snapshot primitive and the saved file will also start from the freezed >> point. >> To differentiate whether we are executing in the running image or in the >> freshly-saved image, the snapshot primitive returns a boolean indicating it. >> >> Read the comment of #snapshotPrimitive for more details. >> > >

April 26, 2017

Re: [Pharo-dev] Updated tech talk archive

by Ben Coman

If Pharo 6 makes it out the door before the end of May, consider swapping Roassal & Pharo7developmentMethod. cheers -ben On Wed, Apr 26, 2017 at 10:31 PM, marcus.denker(a)inrira.fr < marcus.denker(a)inria.fr> wrote: > Good idea! > > Pharo Tech talk Jun has no topic yet, so we could use that. > > Marcus > > On 26 Apr 2017, at 16:18, Ben Coman <btc(a)openinworld.com> wrote: > > Thanks Marcus. > I see the schedule here... https://association.pharo.org/events > doesn't mention Pharo 7 development process. > I think that will be useful to have a presentation. > Maybe a special-edition TechTalk aligned shortly after Pharo 6 Release? > > cheers -ben > > On Wed, Apr 26, 2017 at 7:09 PM, marcus.denker(a)inrira.fr < > marcus.denker(a)inria.fr> wrote: > >> http://pharo.org/TechTalk >> >> Now has a link to the recoding of yesterday >> >> Marcus >> > > >

April 26, 2017

Re: [Pharo-dev] calling methods directly on traits

by Peter Uhnak

Ah, right. Well, one less dead-end to worry about. :) Thanks, Peter On Wed, Apr 26, 2017 at 04:20:07PM +0200, Guillermo Polito wrote: > Traits are instances as classes are instances :) > > On Wed, Apr 26, 2017 at 3:22 PM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > > > But trait is already instance, no? (instance of Trait class) > > Or is that like an instance of an instance? > > > > On Wed, Apr 26, 2017 at 03:03:42PM +0200, Guillermo Polito wrote: > > > Hi, > > > > > > No, it's the same as in classes. If methods are on the instance side, you > > > cannot call them unless you instantiate the class. > > > > > > Guille > > > > > > On Wed, Apr 26, 2017 at 2:24 PM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > > > > > > > Hi, > > > > > > > > would it be possible to somehow call a method directly on a trait? > > > > > > > > e.g. > > > > > > > > Trait named: #TMyTrait. > > > > > > > > then add method > > > > > > > > TMyTrait>>twelve > > > > ^ 12 > > > > > > > > > > > > and then I could do `TMyTrait twelve "-> 12"`. > > > > > > > > Note that I cannot use Class-side of a regular class, because of name > > > > clashes with system (Class, ClassDescription, ...) selectors. > > > > > > > > Thanks, > > > > Peter > > > > > > > > > > > >

April 26, 2017

OmSessionStore and SnapshotDone event (was: saving an image on windows and opening it on mac problems)

by Andrei Chis

Hi, OmSessionStore registers an action (OmSessionStore>>#store) when the event SnapshotDone is triggered. However this event is triggered immediately when an image is opened after being saved, before the file system was reset. This means that OmSessionStore>>#store is called before the file system is reset. Hence, if you save an image on windows and open it on mac you run into issues as OmSessionStore>>#store performs file operations that will work with a WindowsStore instead of a MacStore. Does OmSessionStore need to register to SnapshotDone events? When the image is opened OmSessionStore>>#store will be called anyway as OmSessionStore registers a start-up action. Cheers, Andrei

April 26, 2017

Re: [Pharo-dev] saving an image on windows and opening it on mac problems

by Andrei Chis

Any hints about how to handle Freetype fonts? Right now I'm getting also some segmentation faults when opening on mac an image saved on windows, that seem related to Freetype fonts. On Wed, Apr 26, 2017 at 5:04 PM, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > You will also face serious fun with Freetype fonts. > > Phil > > On Wed, Apr 26, 2017 at 3:06 PM, Andrei Chis <chisvasileandrei(a)gmail.com> > wrote: > >> Hi all, >> >> I saw that there are a few issues about images saved on an operating >> system not working when opened on other operating systems: >> - https://pharo.fogbugz.com/f/cases/19852/Unable-to-open-ima >> ge-in-OSX-after-it-has-been-updated-in-Windows >> - https://pharo.fogbugz.com/f/cases/19869/Infinite-loop-on-m >> ac-when-opening-an-image-saved-on-windows >> - https://pharo.fogbugz.com/f/cases/19272/Image-freezes-on-L >> inux-if-it-was-previously-saved-on-Windows >> - http://forum.world.st/Image-freezes-on-Linux-if-it-was-pre >> viously-saved-on-Windows-td4903258.html >> >> I gave the fix in case 19869 a try and with it I can save an image on >> windows and open it on mac, however, there are some side effects. >> First several folders having the following name are created in the image >> folder: >> >> '\Users\andrei\test-image' >> '\Users\andrei\test-image\pharo-local\' >> '\Users\andrei\test-image\pharo-local\ombu-sessions' >> >> Second, I can only open the image on man once. The second time I get the >> following stack: >> >> [31mPrimitiveFailed: primitive #createDirectory: in WindowsStore failed >> [0mWindowsStore(Object)>>primitiveFailed: >> WindowsStore(Object)>>primitiveFailed >> WindowsStore(DiskStore)>>createDirectory: >> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >> WindowsStore(FileSystemStore)>>ensureCreateDirectory: >> FileSystem>>ensureCreateDirectory: >> FileReference>>ensureCreateDirectory >> OmSessionStore>>resetWithStoreNamed: >> OmSessionStore>>resetWithNextStoreName >> OmSessionStore>>store >> WeakMessageSend>>value >> WeakMessageSend>>cull: >> WeakMessageSend>>cull:cull: >> [ action cull: arg1 cull: announcer ] in LegacyWeakSubscription(WeakAnn >> ouncementSubscription)>>deliver: in Block: [ action cull: arg1 cull: >> announcer ] >> BlockClosure>>on:do: >> BlockClosure>>on:fork: >> LegacyWeakSubscription(WeakAnnouncementSubscription)>>deliver: >> [ tmp4 deliver: arg1 ] in SubscriptionRegistry>>deliver:to:startingAt: >> in Block: [ tmp4 deliver: arg1 ] >> BlockClosure>>ifCurtailed: >> SubscriptionRegistry>>deliver:to:startingAt: >> SubscriptionRegistry>>deliver:to: >> SubscriptionRegistry>>deliver: >> SystemAnnouncer(Announcer)>>announce: >> SystemAnnouncer>>announce: >> SystemAnnouncer>>snapshotDone: >> SessionManager>>snapshot:andQuit: >> [0m >> >> So it seems that OmSessionStore is not reset and holds a reference to a >> the windows path which it tries to create. >> >> Cheers, >> Andrei >> >> >> >> >> >

April 26, 2017

Re: [Pharo-dev] saving an image on windows and opening it on mac problems

by phil＠highoctane.be

You will also face serious fun with Freetype fonts. Phil On Wed, Apr 26, 2017 at 3:06 PM, Andrei Chis <chisvasileandrei(a)gmail.com> wrote: > Hi all, > > I saw that there are a few issues about images saved on an operating > system not working when opened on other operating systems: > - https://pharo.fogbugz.com/f/cases/19852/Unable-to-open- > image-in-OSX-after-it-has-been-updated-in-Windows > - https://pharo.fogbugz.com/f/cases/19869/Infinite-loop-on- > mac-when-opening-an-image-saved-on-windows > - https://pharo.fogbugz.com/f/cases/19272/Image-freezes-on- > Linux-if-it-was-previously-saved-on-Windows > - http://forum.world.st/Image-freezes-on-Linux-if-it-was- > previously-saved-on-Windows-td4903258.html > > I gave the fix in case 19869 a try and with it I can save an image on > windows and open it on mac, however, there are some side effects. > First several folders having the following name are created in the image > folder: > > '\Users\andrei\test-image' > '\Users\andrei\test-image\pharo-local\' > '\Users\andrei\test-image\pharo-local\ombu-sessions' > > Second, I can only open the image on man once. The second time I get the > following stack: > > [31mPrimitiveFailed: primitive #createDirectory: in WindowsStore failed > [0mWindowsStore(Object)>>primitiveFailed: > WindowsStore(Object)>>primitiveFailed > WindowsStore(DiskStore)>>createDirectory: > WindowsStore(FileSystemStore)>>ensureCreateDirectory: > WindowsStore(FileSystemStore)>>ensureCreateDirectory: > WindowsStore(FileSystemStore)>>ensureCreateDirectory: > WindowsStore(FileSystemStore)>>ensureCreateDirectory: > WindowsStore(FileSystemStore)>>ensureCreateDirectory: > WindowsStore(FileSystemStore)>>ensureCreateDirectory: > FileSystem>>ensureCreateDirectory: > FileReference>>ensureCreateDirectory > OmSessionStore>>resetWithStoreNamed: > OmSessionStore>>resetWithNextStoreName > OmSessionStore>>store > WeakMessageSend>>value > WeakMessageSend>>cull: > WeakMessageSend>>cull:cull: > [ action cull: arg1 cull: announcer ] in LegacyWeakSubscription( > WeakAnnouncementSubscription)>>deliver: in Block: [ action cull: arg1 > cull: announcer ] > BlockClosure>>on:do: > BlockClosure>>on:fork: > LegacyWeakSubscription(WeakAnnouncementSubscription)>>deliver: > [ tmp4 deliver: arg1 ] in SubscriptionRegistry>>deliver:to:startingAt: in > Block: [ tmp4 deliver: arg1 ] > BlockClosure>>ifCurtailed: > SubscriptionRegistry>>deliver:to:startingAt: > SubscriptionRegistry>>deliver:to: > SubscriptionRegistry>>deliver: > SystemAnnouncer(Announcer)>>announce: > SystemAnnouncer>>announce: > SystemAnnouncer>>snapshotDone: > SessionManager>>snapshot:andQuit: > [0m > > So it seems that OmSessionStore is not reset and holds a reference to a > the windows path which it tries to create. > > Cheers, > Andrei > > > > >

April 26, 2017

Re: [Pharo-dev] Updated tech talk archive

by marcus.denker＠inrira.fr

Good idea! Pharo Tech talk Jun has no topic yet, so we could use that. Marcus > On 26 Apr 2017, at 16:18, Ben Coman <btc(a)openinworld.com> wrote: > > Thanks Marcus. > I see the schedule here... https://association.pharo.org/events <https://association.pharo.org/events> > doesn't mention Pharo 7 development process. > I think that will be useful to have a presentation. > Maybe a special-edition TechTalk aligned shortly after Pharo 6 Release? > > cheers -ben > > On Wed, Apr 26, 2017 at 7:09 PM, marcus.denker(a)inrira.fr <mailto:marcus.denker@inrira.fr> <marcus.denker(a)inria.fr <mailto:marcus.denker@inria.fr>> wrote: > http://pharo.org/TechTalk <http://pharo.org/TechTalk> > > Now has a link to the recoding of yesterday > > Marcus >

April 26, 2017

Re: [Pharo-dev] calling methods directly on traits

by Guillermo Polito

Traits are instances as classes are instances :) On Wed, Apr 26, 2017 at 3:22 PM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > But trait is already instance, no? (instance of Trait class) > Or is that like an instance of an instance? > > On Wed, Apr 26, 2017 at 03:03:42PM +0200, Guillermo Polito wrote: > > Hi, > > > > No, it's the same as in classes. If methods are on the instance side, you > > cannot call them unless you instantiate the class. > > > > Guille > > > > On Wed, Apr 26, 2017 at 2:24 PM, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > > > > > Hi, > > > > > > would it be possible to somehow call a method directly on a trait? > > > > > > e.g. > > > > > > Trait named: #TMyTrait. > > > > > > then add method > > > > > > TMyTrait>>twelve > > > ^ 12 > > > > > > > > > and then I could do `TMyTrait twelve "-> 12"`. > > > > > > Note that I cannot use Class-side of a regular class, because of name > > > clashes with system (Class, ClassDescription, ...) selectors. > > > > > > Thanks, > > > Peter > > > > > > > >

April 26, 2017

Re: [Pharo-dev] Updated tech talk archive

by Ben Coman

Thanks Marcus. I see the schedule here... https://association.pharo.org/events doesn't mention Pharo 7 development process. I think that will be useful to have a presentation. Maybe a special-edition TechTalk aligned shortly after Pharo 6 Release? cheers -ben On Wed, Apr 26, 2017 at 7:09 PM, marcus.denker(a)inrira.fr < marcus.denker(a)inria.fr> wrote: > http://pharo.org/TechTalk > > Now has a link to the recoding of yesterday > > Marcus >

April 26, 2017