Andres Freund wrote:
> On 2015-10-21 17:21:25 -0300, Alvaro Herrera wrote:

> > I think the first assignment is also pointless -- I mean can't we just
> > use MyReplicationSlot-> in both places where slot_name is used?
> Makes the lines a bit long. strlen(NameStr(MyReplicationSlot-> ...

Meh.  Assign the strlen somewhere?

> > In the same routine, it seems wasteful to be doing strlen() twice for
> > every string sent over the wire.
> That seems fairly insignificant. For one this is a rather infrequent and
> expensive operation,

OK, I can buy that.

> for another every decent compiler can optimize those away. Note that
> those duplicate strlen() calls are there in a lot of places in
> walsender.c

It can?  Tom has repeatedly argue the opposite, in the past.

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

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