On Nov 2, 2011, at 1:33 PM, Jamie Pinkham wrote: > 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.
Sure, the property can't be synthesized. But even when I define setter and getter in the @implementation, I can't declare the property like: @proprty (retain) dispatch_queue_t dispatchQueue; in order to indicate the semantics, since the compiler (clang) will refuse it with "error: property with 'retain (or strong)' attribute must be of object type [3]" So, according the compiler, the property attribute "retain" does not indicate a certain (and general) semantic, but assumes a specific implementation applicable only for ObjC objects. Or, in other words, when I state "retain", then I shall use objects and if I implement setter and getter, they shall invoke retain and release. I would understand if the compiler would only complain about the "retain" attribute if it must synthesize it for "unknown" types. Andreas > > -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? >> >> >> >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/jamiepinkham%40me.com >> >> This email sent to jamiepink...@me.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
