Completion block using GCD

Question

I am developing an app that requires a completion block and a "barrier" functionality. As far as I know, NSOperation API has a completionBlock property and GCD API has the dispatch_barrier_(a)sync function to handle the barrier needs.

What should I do in order to accomplish both of the needs? Thanks!

Please don't use internet slang / acronyms here on SO (specifically, 'ASAIK'), as they might not be understood. — Richard J. Ross III, Dec 09 '12 at 15:45

score 1 · Accepted Answer · answered Dec 09 '12 at 17:13

1

dispatch_group should have all the pieces you need. Just dispatch_group_async/dispatch_group_enter for your work units, then dispatch_group_notify for your completion handler.

answered Dec 09 '12 at 17:13

Catfish_Man

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Completion block using GCD

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