Is there a queue dictionary for the GCD queue

Question

I really love the threadDictionary property in NSThread : it’s very convenient to store things using threadDictionary rights.

Is there an equivalent dictionary for the GCD queue?

Answer 1

You might want to explore dispatch_set_context/dispatch_get_context . The documentation here and here . You have to manage the context, but it may be what you are looking for.

Answer 2

If you can target iOS 5 and above, you can use dispatch_queue_get[set]_specific() , which allows you to add dictionary values ​​(like a key) to the queue. I can’t find the document pages on them, oddly enough, but they are commented out in queue.h