On 6 sep 2011, at 08:49, Thomas Davie wrote: > There are two schools of thought on atomic/nonatomic, and both apply equally > to Mac/iOS: > > 1) Atomicity provides a little bit of safety, and shouldn't be shrugged off > for no reason. Because of that, only optimise the atomic set/get when you've > actually profiled and determined it's a problem.
There's an additional consideration to keep in mind - @synthesized getters use the retain+autorelease pattern which makes local variables acquired from such getters "safer" in certain (unusual) usage patterns. Nothing to do with thread safety - of course. > 2) When multithreading you rarely if ever actually want atomicity at the > property level, instead you want somewhat larger critical sections in general. Wholeheartedly agree. j o a r _______________________________________________ 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
