CODEWITHSUNDEEP
iphonemultithreadingcore-datagrand-central-dispatch
samvermette
samvermette

Reputation: 40437

NSManagedObjectContext and GCD

From Apple's Core Data Programming Guide:

You should give each thread its own entirely private managed object context and keep their associated object graphs separated on a per-thread basis.

How does that scale to Grand Central Dispatch, where you have absolutely no control over threads, which are created automagically on your behalf?

The way I do it now is to have one NSManagedObjectContext for each dispatch queue, but that's the thing: a dispatch queue doesn't necessarily use the same thread every time, right?

Upvotes: 5

Views: 2139

Answers (2)

Hoang Pham
Hoang Pham

Reputation: 6949

I have not looked at this article, but maybe you are interested in this post Passing around a NSManagedObjectContext on the iPhone by Marcus Zara.

Upvotes: 0

Nick Weaver
Nick Weaver

Reputation: 47241

I think "What does Apple mean when they say that a NSManagedObjectContext is owned by the thread or queue that created it?" on SO will answer your question.

Upvotes: 2

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