From: Bruce Momjian <pgman@candle.pha.pa.us>
Message-Id: <200303281600.h2SG0lP05298@candle.pha.pa.us>
Subject: Re: ECPG thread-safety
In-Reply-To: <63340000.1048867152@lerlaptop.iadfw.net>
To: Larry Rosenman <ler@lerctr.org>
Date: Fri, 28 Mar 2003 11:00:47 -0500 (EST)
Cc: Lee Kindness <lkindness@csl.co.uk>,
	Philip Yarra <philip@utiba.com>, pgsql-interfaces@postgresql.org,
	pgsql-hackers@postgresql.org, Michael Meskes <meskes@postgresql.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=US-ASCII


Would someone take those patches and hunt around for proper 'configure'
tests?  I can do the configure coding, but I don't know what tests to
make.

	http://services.csl.co.uk/postgresql/


---------------------------------------------------------------------------

Larry Rosenman wrote:
> 
> 
> --On Friday, March 28, 2003 10:54:23 -0500 Bruce Momjian 
> <pgman@candle.pha.pa.us> wrote:
> 
> >
> > I have the libpq patch in my mailbox that just needs configure thread
> > testing code.  I will get that in for 7.4.
> I can help with the UnixWare threads stuff.  Also, Micheal Meskes now has 
> an account
> on my UnixWare box.
> 
> The threads are native on UW, but you need to invoke the cc -Kpthread 
> option.
> 
> LER
> 
> >
> > -------------------------------------------------------------------------
> > --
> >
> > Lee Kindness wrote:
> >> Philip,
> >>
> >> You can find the "patch so far" at:
> >>
> >>  http://services.csl.co.uk/postgresql/
> >>
> >> along with a libpq thread-safe patch.
> >>
> >> The thread referenced by Bruce's email details some of the issues
> >> still to be looked at. The main work is integration with the build
> >> system (testing for and linking in POSIX threads) and testing.
> >>
> >> I'm more than happy for you to look at at, I haven't had the time I
> >> hoped to complete this.
> >>
> >> Thanks, Lee.
> >>
> >> Philip Yarra writes:
> >>  > As I found out recently, ECPG is not thread-safe. This is a problem
> >>  > for us, as  we really need to be able to use ECPG* in a
> >>  > multi-threaded C application.  Michael mentioned that Lee is working
> >>  > on fixing these problems, but was not  sure when it would be
> >>  > complete.
> >>  >
> >>  > So, my questions are:
> >>  > Lee/anyone, do you have an estimated completion date?
> >>  > If not, can we (myself plus a "real" C programmer) help you?
> >>  >
> >>  > Regards, Philip Yarra.
> >>  >
> >>  > * Yes, we could use libpq, but ECPG minimises our porting from
> >>  > Informix.  Rewriting everything to use libpq would be too expensive.
> >>  >
> >>
> >
> > --
> >   Bruce Momjian                        |  http://candle.pha.pa.us
> >   pgman@candle.pha.pa.us               |  (610) 359-1001
> >   +  If your life is a hard drive,     |  13 Roberts Road
> >   +  Christ can be your backup.        |  Newtown Square, Pennsylvania
> > 19073
> >
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 6: Have you searched our list archives?
> >
> > http://archives.postgresql.org
> >
> 
> 
> 
> -- 
> Larry Rosenman                     http://www.lerctr.org/~ler
> Phone: +1 972-414-9812                 E-Mail: ler@lerctr.org
> US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
> 
> 
> 
> 

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073