Concurrency with Core Data

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Background Saving with Core Data Josh Johnson josh@twotoasters.com twitter.com/jnjosh Sunday, December 4, 11

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Concurrency with Core Data Josh Johnson josh@twotoasters.com twitter.com/jnjosh Sunday, December 4, 11

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“Why support concurrency?” Sunday, December 4, 11

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http://skitch.com/okidokie/nm31y/beach-ball-mac-osx Sunday, December 4, 11

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Wait... Isn’t this too hard? Sunday, December 4, 11

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Wait... Isn’t this too hard? http://www.wallchan.com/sandbox/57897/ Sunday, December 4, 11

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http://kelvinslush.com/blog/the-rules Sunday, December 4, 11

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Thread Conﬁnement Sunday, December 4, 11

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NSManagedObjectContext NSManagedObject Rule 1. & Sunday, December 4, 11

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NSManagedObjectContext NSManagedObject Rule 1. & Not Thread-safe Sunday, December 4, 11

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NSManagedObjectId Rule 2. Sunday, December 4, 11

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NSManagedObjectId Rule 2. Is Thread-safe Sunday, December 4, 11

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NSManagedObjectId Rule 2. Is Thread-safe [otherMoc objectWithID:objectID] Sunday, December 4, 11

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Merge Changes from Notiﬁcations Rule 3. Sunday, December 4, 11

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Merge Changes from Notiﬁcations Rule 3. NSManagedObjectContextDidSaveNotification Sunday, December 4, 11

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Merge Changes from Notiﬁcations Rule 3. NSManagedObjectContextDidSaveNotification [moc mergeChangesFromContextDidSaveNotification:note]; Sunday, December 4, 11

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No Thread Conﬁnement? Sunday, December 4, 11

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http://63angel.blogspot.com/2011/07/danger-will-robinson-obsessions.html Sunday, December 4, 11

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http://pennystockgurus.blogspot.com/2010_07_01_archive.html Sunday, December 4, 11

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“Siri, make my app better” Sunday, December 4, 11

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http://skitch.com/okidokie/nm31y/beach-ball-mac-osx Demo NSOperation Sunday, December 4, 11

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Wait... Isn’t this too hard? http://www.wallchan.com/sandbox/57897/ Sunday, December 4, 11

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GCD & Blocks Sunday, December 4, 11

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Grand Central Dispatch & Blocks Concurrent And Asynchronous Programming With GCD Nathan Eror Saturday @ 2:45pm Sunday, December 4, 11

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“The irresponsibly quick review” Grand Central Dispatch & Blocks Sunday, December 4, 11

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Blocks http://developer.apple.com/library/ios/#documentation/cocoa/Conceptual/Blocks/Articles/00_Introduction.html Sunday, December 4, 11

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GCD dispatch_async(dispatch_get_main_queue(), ^{ [self doSomethingImportantOnMainQueue]; }); dispatch_async(myQueue, ^{ [self doSomethingImportant]; }); Sunday, December 4, 11

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Grand Central Dispatch & Blocks Concurrent And Asynchronous Programming With GCD Nathan Eror Saturday @ 2:45pm Sunday, December 4, 11

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http://skitch.com/okidokie/nm31y/beach-ball-mac-osx Demo GCD & Blocks Sunday, December 4, 11

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Sunday, December 4, 11

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Core Data Concurrency in iOS 5 Sunday, December 4, 11

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Core Data Concurrency in iOS 5 • Concurrency Types Sunday, December 4, 11

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Core Data Concurrency in iOS 5 • Concurrency Types • NSConﬁnementConcurrencyType • NSMainQueueConcurrencyType • NSPrivateQueueConcurrencyType Sunday, December 4, 11

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Core Data Concurrency in iOS 5 • Concurrency Types • NSConﬁnementConcurrencyType • NSMainQueueConcurrencyType • NSPrivateQueueConcurrencyType • Parent / Child Contexts Sunday, December 4, 11

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http://skitch.com/okidokie/nm31y/beach-ball-mac-osx Demo Parent / Child Contexts Sunday, December 4, 11

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Resources MAGICALRECORD https://github.com/magicalpanda/MagicalRecord  http://developer.apple.com http://cimgf.com Sunday, December 4, 11

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Questions? Sunday, December 4, 11

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Thank You! Josh Johnson josh@twotoasters.com twitter.com/jnjosh Sunday, December 4, 11