On 6 Dec 2009, at 13:57, [email protected] wrote: > 1. GC is on. Does that mean that all allocations invocation by NS*/CF* will > be in the auto_zone?
Not necessarily. AppKit and CoreFoundation objects are still capable of allocating unmanaged memory (via malloc(), for instance) for their use under garbage collection, so long as they clean it up when they're done with it. > 2. Are the allocations accomplished using NSZoneMalloc and > CFAllocatorAllocate? Not sure on this one - I'll defer to someone more knowledgable. > 3. grepping the heap(1) output shows little data allocated to NSText* > instances. Is some of the 40MB of non-object data allocated by the NSText > system? for glyph storage?` > 4. If 3 is not utterly incorrect - why isn't the memory utilised by the > NSText system flagged as being allocated by NSText*. All that #3 means is that the NSText objects themselves are small. heap(1) is relatively simplistic - it can't determine that one allocated object "belongs to" another. If a NSText object allocates a bunch of CTRun objects (for instance), those allocation will be billed against CTRun, not NSText._______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
