On Mon, Nov 30, 2009 at 1:33 PM, Ben Haller <bhcocoa...@sticksoftware.com> wrote: > This is interesting to me, since I am in fact using @public and -> with > some ivars to allow faster use of one of my classes. (Yes, I've confirmed > that this is significant in Sampler; it is, in fact, quite a large > percentage of the total time of my app, which has runtimes measured in days, > so I do care :->). I understand the concept of the fragile base class > problem and so forth; I just didn't realize Apple had done something to fix > it that might affect the performance of my app. :->
Are you talking about an improvement over using accessor methods, or over using non-fragile instance variables? Even though, as Greg noted, it takes more work to do a non-fragile ivar access because of the indirection, that is insignificant compared to the time that would be spent in objc_msgSend. Especially if the ivars are used so often that their symbols stick around in the cache. --Kyle Sluder _______________________________________________ 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
