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Date: Tue, 4 Feb 2003 20:11:28 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: mmap() issue affects cygipc (and PostgreSQL's PL/Tcl)
Message-ID: <20030204191128.GM5822@cygbert.vinschen.de>
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References: <20030204165929 DOT GA1400 AT tishler DOT net> <20030204174804 DOT GI5822 AT cygbert DOT vinschen DOT de> <20030204182243 DOT GB1400 AT tishler DOT net> <20030204190043 DOT GK5822 AT cygbert DOT vinschen DOT de> <20030204190919 DOT GA4380 AT redhat DOT com>
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On Tue, Feb 04, 2003 at 02:09:19PM -0500, Christopher Faylor wrote:
> On Tue, Feb 04, 2003 at 08:00:43PM +0100, Corinna Vinschen wrote:
> >On Tue, Feb 04, 2003 at 01:22:43PM -0500, Jason Tishler wrote:
> >> Any other ideas?  Or, are Cygwin PostgreSQL PL/Tcl users out of luck
> >> then?
> >
> >Hmmm.  It looks as if cygipc would have to be changed to allow working
> >w/o O_TRUNC.  I can't see any chance to change something in Cygwin to
> >get that working.
> 
> Doesn't CREATE_ALWAYS truncate the file anyway?  Couldn't we skip a TRUNCATE_EXISTING
> in the case of a CREATE_ALWAYS?

We do.  Both operations (CREATE_ALWAYS as well as TRUNCATE_EXISTING)
don't work on mmapped files.  Bad luck.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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