Re: fork/exec patch: pre-CreateProcess finalization

Claudio Natoli wrote:
>
> Tom Lane writes:
> > Actually, on further reflection a separate array to store PIDs and
> cancel keys is probably a better idea.
> [snip]
> > I still think it's unnecessary to make a separate shmem segment for it,
> though.
>
> Why is that? Don't we need the backends to have access to it to do a cancel
> request? I think I've missed something here...

I think they are saying put the cancel key inside the existing shared
memory segment.  I don't know when we actually attach to the main shared
memory sigment in the child, but it would have to be sooner than when we
need the cancel key.

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