On Feb 6, 2009, at 5:09 PM, Kyle Sluder wrote:

Then why bother with @synchronized?  Don't fix what isn't broke.

It's one less ivar to worry about. I retro-fitted the lock to one other object I wanted to make thread-safe, only because I couldn't think of a way of doing this safely with @synchronized(), and thought I'd ask before committing. And now I'm wondering how @synthesize does atomic sets internally...

Since you're using a setter, you need to take out the lock on a
different object.  You might be able to take it out on self (a la Java
synchronization), or you might have to create a separate dummy
NSObject on which to take out the lock.  And we've now come
full-circle to the ivarLock you had in your original implementation.


Yeah, that's what I thought. But thanks for confirming this. Guess NS(Recursive)Lock still has its uses...

Nick Zitzmann
<http://www.chronosnet.com/>

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