On Oct 21, 2009, at 1:39 AM, Nick Rogers wrote: > (gdb) info gc-roots 0x2004f9340 > Number of roots: 1 > Root: > 0 Kind: bytes rc: 1 Address: 0x0000000200543b40 Offset: > 0x0000000000000008 > 1 Kind: object rc: 0 Address: 0x00000002004f9340 Class: Volume > > Is there a retain cycle problem. > The memory gathered by this ivar is not freed, as per Obj-Alloc Instrument. > > What shall I make out of these results and how can they lead to refinement > (so that all the memory referenced by this ivar is freed)?
"rc: 1" means that the object has been CFRetain'd by something. That is, something somewhere decided that it was going to bypass the collector and has failed to call CFRelease when done. Use the ObjectAlloc instrument in Instruments to track it down. You can also: set env MallocStackLoggingNoCompact 1 set env AUTO_REFERENCE_COUNT_LOGGING 1 And then use 'info malloc 0x2004f9340'. It'll typically show all CFRetain/CFRelease events. (But not always -- there is a bug that prevents it from showing all of 'em. However, ObjectAlloc works around it.) b.bum _______________________________________________ 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
