Re: fcntl(SETLK) [was Re: 2nd update on TOAST]

> > my $pgsocket = "/tmp/.s.PGSQL.5432";
> >
> > # try to connect to the postmaster
> > socket(SOCK, PF_UNIX, SOCK_STREAM, 0)
> > or die "unable to create unix domain socket: $!";
> >
> > connect(SOCK, sockaddr_un($pgsocket))
> > and errexit("postmaster is running you must shut it down");
> >
> > oh yeah... :)
> >
> > -Alfred
>
> I don't get this. Isn't there a race condition here?

That's a good point. I don't think so because the socket will only
create for one user. Basically, we don't need something bulletproof
here. We just need something to prevent admins from accidentally
starting two postmasters on the same port.

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