On Oct 24, 2013, at 3:39 AM, Maxthon Chan <xcvi...@me.com> wrote: > On Oct 24, 2013, at 18:23, Greg Parker <gpar...@apple.com> wrote: >> On Oct 24, 2013, at 3:10 AM, Maxthon Chan <xcvi...@me.com> wrote: >>> Neither is appropriate in my situation: Only one touch-up is needed so >>> converting entire file (even just one method since it is extremely long) to >>> MRR is is inappropriate >> >> Write a helper function in a separate non-ARC file. >> >> Do not call objc_retain or objc_release or objc_autorelease directly. > > And by the way, why not?
It's not published API. That should be a good enough reason. The author of those functions is telling you not to. That is also typically a good reason. The ARC optimizer will recognize your calls to these functions, assume they were generated by the ARC compiler, and possibly mis-optimize your code as a result. That is irrelevant given the first two reasons above, but may be helpful to know if you were hoping to just use them and get away with it. > It is well documented in LLVM documentations that those functions are > required to be identical to the corresponding methods. The documentation says that their effect on the retain count is semantically equivalent to a message send. That does not mean you can call them yourself. That documentation is primarily instructions for implementers. -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
