pool interface for shared memory?

[Chris Knight]

(If this has been discussed previously, I apologize. Is there an archive 
for this mailing list somewhere?)

I would like to use the multitude of apr tools (hashes, lists, etc) to 
interact with shared memory, but alas it appears there's no way to do so 
(as I can't implement my own allocator.) Am I incorrect in this 
assessment (and if so, how would I create a pool on top of shared 
memory?) If I am correct, would providing such an interface be generally 
useful and a good/bad idea?