On 2015-08-25 14:33:25 -0400, Tom Lane wrote:
> (IOW, yeah, certainly third-party code could create a new *instance* of
> the ResourceOwner data structure, but they would not have any knowledge of
> what's inside unless they had hacked the core code.)

What I was thinking is that somebody created a new resowner, did
something, and then called LockReleaseCurrentOwner() (because no locks
are needed anymore), or LockReassignCurrentOwner() (say you want to
abort a subtransaction, but do *not* want the locks to be released).

Anyway, I slightly lean towards having wrappers, you strongly against,
so that makes it an easy call.

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