Re: [Leopard] Debugging GC
Re: [Leopard] Debugging GC
- Subject: Re: [Leopard] Debugging GC
- From: mmalc crawford <email@hidden>
- Date: Mon, 29 Oct 2007 11:34:23 -0700
On Oct 29, 2007, at 11:26 AM, John Stiles wrote:
Well, with GC, retain counts are not needed, since objects are not
collected by their retain counts but rather by when they are
unreferenced. So there's no real problem per se. No actual memory
leaks.
But if CFRetain(obj) will bump a refcount, while [obj release] will
fail to decrement it, it seems like it will be a common problem that
objects will have incorrect refcounts when they are collected.
CFRetain and -retain are no longer symmetrical, as are not CFRelease
and -release...
It is perfectly legal to adjust a toll-free-bridged object's
refcount using either the CF calls (which work) or the NSObject
calls (which no-op).
... you should balance CFRetain with CFRelease. That's it.
mmalc
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