On Feb 12, 2014, at 07:58 , Fritz Anderson <[email protected]> wrote:
> On 11 Feb 2014, at 6:04 PM, Rick Mann <[email protected]> wrote: > >> I'm updating an old project that was built long ago, skipping udpates for >> iOS 5 & 6. One of the things my app does, in an NSOperation, is call >> -performSelectorOnMainThread: (waiting until done) as it integrates >> downloaded data into the Core Data store (Core Data operations all happen on >> the main thread). >> >> In iOS 6, this can bring the app to a grinding halt, despite the fact that >> each record integrated is done as a separate -performSelector call (I >> would've thought that'd let the main thread handle user events). >> >> In iOS 7, it actually works really well, leading me to believe something >> changed in the way this is handled. >> >> Any insight? Thanks! > > <http://stackoverflow.com/questions/8637921/core-datas-nsprivatequeueconcurrencytype-and-sharing-objects-between-threads> > > It contains a reference to a WWDC video. > > Then search the Apple docs for NSMainQueueConcurrencyType, and follow the > links from there. I think you misunderstand my question. I know about the new concurrency types. I'm not interested in that. I want to know why my old code works better on iOS 7 than 6. -- Rick
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