> Yep, it's a big win. Even if the default allocator does something > similar (and I think you're right that a linked list of free blocks of > a given size is maintained by the malloc code, or something of that > sort), this scheme avoids a fair handful of method calls and function > calls per object, and so it wins big even just with that. I can't > remember what the degree of speedup was (I put this scheme in several > months ago now), but it was quite substantial.
http://www.mikeash.com/pyblog/performance-comparisons-of-common-operations.html According to which, alloc + init + release costs about the same as 35-40 method calls. The code I posted could cache [MyClass class] if (as I do) you like to leave the asserts in your release code. And it works, of course, because the isA pointer in all instances of a particular class is the same. Paul Sanders. _______________________________________________ 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
