Re: [HACKERS] Parallel bitmap heap scan - Mailing list pgsql-hackers

On 2017-02-07 16:36:55 -0500, Robert Haas wrote:
> On Tue, Feb 7, 2017 at 4:15 PM, Andres Freund <andres@anarazel.de> wrote:
> > FWIW, I think it'd have been better to not add the new callbacks as
> > parameters to *_create(), but rather have them be "templatized" like the
> > rest of simplehash.  That'd require that callback to check the context,
> > to know whether it should use shared memory or not, but that seems fine
> > to me.  Right now this pushes the head of simplehash above a
> > cacheline...
> 
> Something like the attached?

Yes.

> +#ifndef SH_USE_NONDEFAULT_ALLOCATOR
> +

That should probably be documented in the file header.


Thanks!

Andres