Re: [HACKERS] Parallel regress tests (was Re: FOREIGN KEY and

On Tue, 7 Dec 1999, Jan Wieck wrote:

> > I guess you could also do some simple synchronization things, like have
> > the second psql wait on a file to spring into existence:
> > /* second-script */
> > \! while [ ! -f /tmp/lock.file ]; do ;; done
> > \! rm /tmp/lock.file
> >
> > Kind of like a simple semaphore. Isn't that what you are getting at?
>
> Kind of, but wasting CPU while waiting. OTOH, some sleep(1)
> inside the loop would slow down to a certain degree.

Well, we're testing and not benchmarking...

> code should do it. Only that I would like to use pipes
> to/from psql instead of dealing with libpq and formatting
> myself.

If you like, the print routines in psql are competely isolated from the
rest of the code and you can just #include and use them.

> Peter, could you please add some switch to psql that
> activates an fflush() whenever psql would like to read more
> input commands. In the meantime I can start to write the
> driver using the v6.5 psql.

I'm going to go an a flush hunt...

--
Peter Eisentraut Sernanders vaeg 10:115
peter_e(at)gmx(dot)net 75262 Uppsala
http://yi.org/peter-e/ Sweden