Core Data locks in background threads

Question

I\'m getting locks in Core Data. I really don\'t understand the reason. Because I\'m creating a background MOC when I\'m processing in a background thread. Below you can see wha

Answer 1

Not totally sure if this applies to you but I was getting similar errors. I solved them by

1. Using NSPrivateQueueConcurrencyType not NSConfinementConcurrencyType to take processing off the main thread.

2. Putting executeFetchRequest inside MOC's performBlockAndWait.

So in CoreDataHelper.m's fetchEntity method you would have something like this:

[context performBlockAndWait:^{
   NSError *error = nil;
   NSArray *entities = [context executeFetchRequest:request error:&error];
}];