Documentation is unclear wether it is safe to use performBlock: and performBlock

Originator:quellish
Number:rdar://14310971 Date Originated:Sat, 29 Jun 2013 04:02:54 GMT
Status:Open Resolved:
Product:Documentation Product Version:
Classification:Other Bug Reproducible:Always
 
Summary:
iOS 5 introduced queue confinement for managing the concurrency of NSManagedObjectContexts. To use this functionality developers must submit blocks to the context using performBlock: or performBlockAndWait: . This is currently best documented in the iOS 5 release notes:
http://developer.apple.com/library/ios/#releasenotes/General/WhatsNewIniOS/Articles/iOS5.html
And in 2011 and 2012 WWDC Core Data sessions. The documentation - the release notes, Core Data Programming Guide, and WWDC sessions does not make clear wether it is safe to use these methods on NSManagedObjectContexts created using the default concurrency model of NSConfinementConcurrencyType.

Steps to Reproduce:

Expected Results:

Actual Results:

Regression:

Notes:

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!