Re: pg_ctl and port number detection

Tom Lane wrote:
> Bruce Momjian <bruce@momjian.us> writes:
> > pg_ctl.c::test_postmaster_connection() has some fragile code that tries
> > to detect the server port number by looking in the pg_ctl -o string,
> 
> It may be fragile, but it works; or at least I've not heard complaints
> about it lately.

True.

> > I think a simpler solution would be to look in postmaster.pid:
> > pg_ctl already knows the data directory.  If the file is missing, the
> > server is not running.  If the file exists, the first number on the last
> > line, divided by 1000, is the port number.
> 
> That's somewhere between fragile and outright wrong.

Please explain why my idea is not an improvement.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +