On Jul 29, 2013, at 10:43 PM, Quincey Morris wrote: > On Jul 29, 2013, at 22:05 , Lee Ann Rucker <lruc...@vmware.com> wrote: > >> The repro case is to close the document and then reopen it. It doesn't >> reopen the windows, it makes a new window of the same class as the old one. >> Looking at Instruments right now I have one new window and windowController >> - stopped in the window creation code - and one old window that would've >> been dealloc'ed if the code had just run a bit longer. > > So that really does sound like a memory management problem -- the old window > controller is deallocated while another thread is preparing to tell it to > save its restorable state -- but it's not all clear at what level the problem > exists (app or frameworks). Perhaps the new window creation is irrelevant > except to the extent that it might delay the other-threaded save of > restorable state. > > For what its worth, I have state restoration working without crashes in an > ARC app. I use the 'encodeRestorableStateWithCoder' approach to save the > frame rect (for the purpose Eric described), and there is a bit of extra > complexity because I'm restoring the state for a > multiple-window-of-the-same-type-per-document app. The complexity is in the > NSDocument subclass, not the window controller. > > I remember I had a lot of trouble with the state restoration, but I don't > recall any of it being due to the kind of crash you're seeing -- it was a > year or more ago that I was working on it. > > The only thing I can suggest, if you're still interested in experimenting, > would be to try deferring the release of the window controller to the next > iteration of the run loop (or, even more bluntly, to leak all the window > controllers for the purpose of testing) and see if the crash disappears. You > might at least find a workaround if you can defer deallocation for just long > enough. > Yeah. When I have time I'll experiment more and file a bug if necessary.
I've got the encodeRestorableState set too and having that by itself works just fine; nothing ever seems to call that on a zombie. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
