pool interface for shared memory?

[Chris Knight]

I would like to be able to use the existing apr_hash_t type with shared 
memory. To do so, I'd need to wrap a block of shared memory with an 
apr_pool_t type. It seems to me that this should be possible but 
reviewing the pool code, it appears it would not be possible without 
modifying pools code, perhaps to add a way to create an allocator that 
would take a block of existing memory in as input? I'd be interested to 
hear your ideas/suggestions and I'd be happy to slog some code...