need to use NSManagedContext performBlock for contexts with NSMainQueueConcurrencyType?

• davelist need to use NSManagedContext performBlock for contexts with NSMainQueueConcurrencyType? Jan 03 2012, 02:50
  If I create a child context of type NSMainQueueConcurrencyType such as:
  
      context = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSMainQueueConcurrencyType];
      [context setParentContext:mainContext];
  
  do I need to call [context performBlock:^{ // some code }];
  
  or can I just use the context normally if I know the code is being executed on the main thread/queue?
  
  Similarly, do I need to use performBlock on the UIManagedDocument's managedObjectContext property when I know the code is being executed on the main thread?
  
  I think the answer to both questions is "no, you do not need to use performBlock", but I'd like to be certain.
  
  Thanks,
  Dave