Automatic property generation doesn't support the semantics you need. 

You are correct that you have to use the dispatch_retain() and 
dispatch_release() functions; you just have write your setter and getter 
manually, using those functions. 

-Jamie

Sent from my iPhone

On Nov 2, 2011, at 7:52 AM, Andreas Grosam <agro...@onlinehome.de> wrote:

> I want to set a dispatch queue via a property. How should I set the 
> property's attributes when the queue is retained/released via functions 
> dispatch_retain() and dispatch_release()?
> 
> Currently, since using "retain" is only possible for objects, I just declare 
> it like follows:
> 
> @property (nonatomic) dispatch_queue_t dispatchQueue;
> 
> 
> But here, the retain/release semantic isn't exposed. Any better ideas?
> 
> 
> 
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