Hi,
I have an ivar in AppController, a pointer to the class Volume.
When running info gc-roots on it before setting it nil, the results are:
(gdb) info gc-roots 0x2004f9340
Number of roots: 40
Root:
0 Kind: bytes rc: 1 Address: 0x0000000200543b40 Offset:
0x0000000000000008
1 Kind: object rc: 0 Address: 0x00000002004f9340 Class: Volume
Root:
0 Kind: stack rc: 0 Address: 0x00007fff5fbfeab0 Frame level:
1 Symbol: <unknown>
1 Kind: object rc: 0 Address: 0x000000020015d000 Class:
AppController ivar: selectedPTVolume
2 Kind: object rc: 0 Address: 0x00000002004f9340 Class: Volume
.
.
.
and 38 more, most with rc: 0.
When I set this ivar to nil. the results are:
(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
When I try to run info gc-roots on the first entry, the results are:
(gdb) info gc-roots 0x0000000200543b40
Number of roots: 1
Root:
0 Kind: bytes rc: 1 Address: 0x0000000200543b40
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)?
Wishes,
Nick
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