OK. Thanks. (I'd have responded sooner but I was driving all day) I will look into this. It does appear that I was not being precise enough with the MOC on potential multiple threads. So we should probably have a moc on the main thread (for queries, etc) and have transient background thread based mocs for the fairly heavy lifting.
Thanks again. Andrew On Nov 29, 2011, at 8:51 AM, Fritz Anderson wrote: > On 29 Nov 2011, at 7:21 AM, Andrew Kinnie wrote: > >> This method may be called from the main thread or from a background thread, >> but is always called using performSelectorInBackground. > > It's not enough that you divert the call to _a_ background thread. You must > send it to _the_ background thread that owns the managed-object context. > > If necessary (you can't exchange the data between threads through non-CD > immutable types), each thread that does business with your persistent store > should have its own MOC, coordinate its content with > NSManagedObjectContextDidSaveNotification, and query/update the store only > through its MOC. > > — F > _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
