Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Date: Tue, 13 Feb 2001 15:23:13 -0500 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: Optimizing away "ReadFile" calls when Make calls stat() Message-ID: <20010213152313.A12830@redhat.com> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <4.3.1.2.20010213134821.019a7130@pop.ma.ultranet.com> <20010213190131.14369.qmail@lizard.curl.com> <200102131935.OAA09136@envy.delorie.com> <20010213194612.17311.qmail@lizard.curl.com> <200102131954.OAA09284@envy.delorie.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.11i In-Reply-To: <200102131954.OAA09284@envy.delorie.com>; from dj@delorie.com on Tue, Feb 13, 2001 at 02:54:01PM -0500 On Tue, Feb 13, 2001 at 02:54:01PM -0500, DJ Delorie wrote: >> But it does nothing at all for the "usual case" I'm trying to >> optimize, which is Make stat()ing a file but never reading it. > >It does, because stat() reads the file twice, once to see if it's a >symlink, and once to see if the executable bit needs to be set. If it is actually doing this, then that's a bug. I went to some effort a year or so ago to do away with the second read. cgf -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple