Re: Fix comments in instr_time.h and remove an unneeded cast to int64

Hi,

On Tue, Aug 06, 2024 at 05:49:32PM +0300, Heikki Linnakangas wrote:
> On 06/08/2024 17:20, Tom Lane wrote:
> > Heikki Linnakangas <hlinnaka@iki.fi> writes:
> > > On 06/08/2024 11:54, Bertrand Drouvot wrote:
> > > > Please find attached a tiny patch to correct those and, in passing, remove what
> > > > I think is an unneeded cast to int64.
> > 
> > > Applied, thanks!
> > 
> > I think this comment change is a dis-improvement.  It's removed the
> > documentation of the important fact that INSTR_TIME_GET_MICROSEC and
> > INSTR_TIME_GET_NANOSEC return a different data type from
> > INSTR_TIME_GET_MILLISEC (ie, integer versus float).  Also, the
> > expectation is that users of these APIs do not know the actual data
> > type of instr_time, and instead we tell them what the output of those
> > macros is.  This patch just blew a hole in that abstraction.

Oh ok, did not think about it that way, thanks for the feedback!

> 
> Hmm, ok I see. Then I propose:
> 
> 1. Revert
> 2. Just fix the comment to say int64 instead of uint64.

LGTM, thanks!

Regards,

-- 
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
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