If you're targeting 10.7, you can use the new NSManagedObjectContext concurrency support:
http://developer.apple.com/library/ios/#documentation/cocoa/conceptual/coredata/Articles/cdConcurrency.html#//apple_ref/doc/uid/TP40003385-SW1 --Kyle Sluder On Wed, Nov 30, 2011 at 7:41 AM, Andrew Kinnie <akin...@mac.com> wrote: > 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
