Alexander Korotkov wrote:
> On Mon, Feb 13, 2017 at 7:07 PM, Alvaro Herrera <>
> wrote:

> > Re the coding of the padding computation, seems it'd be better to use
> > our standard "offsetof(last-struct-member) + sizeof(last-struct-member)"
> > rather than adding each of the members' sizes individually.
> It was done so in order to evade extra level of nesting for PGXACT.  See
> discussion with Tom Lane in [1] and upthread.

Yes, I understand.  I just mean that it could be done something like

#define PGXACTPadSize (PG_CACHE_LINE_SIZE - (offsetof(PGXACT, nxid) + 

Álvaro Herrera      
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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