X-Spam-Check-By: sourceware.org Date: Tue, 6 Mar 2007 22:53:22 -0500 From: Christopher Faylor To: cygwin AT cygwin DOT com Subject: Re: CreateFileMapping/MapViewOfFile and fork Message-ID: <20070307035322.GA19636@trixie.casa.cgf.cx> Reply-To: cygwin AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com References: <5c8adab70703061906j7e074747g8d98171566bde9dd AT mail DOT gmail DOT com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5c8adab70703061906j7e074747g8d98171566bde9dd@mail.gmail.com> User-Agent: Mutt/1.5.11 Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On Tue, Mar 06, 2007 at 10:06:33PM -0500, Sean Daley wrote: >As part of an application we're developing, we use >CreateFileMapping/MapViewOfFile to be able to share information among >processes. I noticed today that if I try to reference the map >immediately after calling fork() but before calling exec, that my >application will crash. > >I should be able to resolve this in my app but I was just curious if >this was unexpected behavior or not. No. It is not unexpected. Cygwin is intended to emulate linux. CreateFileMapping is not a linux function. If you want to use Windows functions for this type of thing you probably shouldn't be using Cygwin. Maybe you really want to use MinGW (http://mingw.org). Either that or you should be using linux/unix alike functions like mmap(). -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/