Re: Better shared data structure management and resizable shared data structures - Mailing list pgsql-hackers

Here's patch version 12 [*]. I believe I've addressed all the feedback, 
and I feel this is in pretty good shape now. There hasn't been any big 
design changes lately.

One notable change is that I replaced the separate 
{request|init|attach}_fn_arg fields in ShmemCallbacks with a single 
'opaque_arg' field, and added a brief comment to it. You both commented 
on whether we need that at all, and maybe you're right that we don't, 
but at least it's now just one field rather than three. As before, 
callers can simply ignore it if they don't need it.

[*] also available at 
https://github.com/hlinnaka/postgres/tree/shmem-init-refactor-12

- Heikki