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Re: deferred deallocation of local objects

From: Derek Zhou
Subject: Re: deferred deallocation of local objects
Date: Sat, 18 Oct 2003 12:20:20 -0700
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> However, there is another error condition possible between A and B
> without involving C:
> A vends O to B (oneway void) producing proxy P in B
> B uses P and releases it, sending release message to A
> A vends O to B again .... before receiving the release message.
> A receives the release message and destroys local proxy releasing O
> B receives reference to O from A and tries to use it ...
> Your solution would fix the original three-way problem, but not this
> two way problem.
Well, if A vends the object again, the retaincount at A should plus one; then 
it takes 2 release messages from B to dealloc the object. IMHO, tracking 
message sequence number in retain/release is overkill.

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