Re: asynchronous execution

On Wed, Jul 26, 2017 at 5:43 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> I have not been paying any attention to this thread whatsoever,
> but I wonder if you can address your problem by building on top of
> the ExecProcNode replacement that Andres is working on,
> https://www.postgresql.org/message-id/20170726012641.bmhfcp5ajpudihl6@alap3.anarazel.de
>
> The scheme he has allows $extra_stuff to be injected into ExecProcNode at
> no cost when $extra_stuff is not needed, because you simply don't insert
> the wrapper function when it's not needed. I'm not sure that it will
> scale well to several different kinds of insertions though, for instance
> if you wanted both instrumentation and async support on the same node.
> But maybe those two couldn't be arms-length from each other anyway,
> in which case it might be fine as-is.

Yeah, I don't quite see how that would apply in this case -- what we
need here is not as simple as just conditionally injecting an extra
bit.

--
Robert Haas
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