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 Message-Id: <4.2.2.20010821153100.00ba9ba0@mail.online.no> X-Sender: hardon@mail.online.no (Unverified) X-Mailer: QUALCOMM Windows Eudora Pro Version 4.2.2 Date: Wed, 22 Aug 2001 00:11:02 +0200 To: cygwin@cygwin.com From: Gunnar Andre Dalsnes Subject: Re: Help on posix file lock semantics Cc: Kurt Roeckx In-Reply-To: <20010821121135.A7837@ping.be> References: <4.2.2.20010820221811.00b9d9a0@mail.online.no> <4.2.2.20010819225911.00b94970@pop.online.no> <4.2.2.20010819225911.00b94970@pop.online.no> <20010820131824.A200@ping.be> <4.2.2.20010820221811.00b9d9a0@mail.online.no> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 21.08.01 12:11 , you wrote: >On Mon, Aug 20, 2001 at 10:55:54PM +0200, Gunnar Andre Dalsnes wrote: > > At 20.08.01 13:18 , you wrote: > > >On Sun, Aug 19, 2001 at 11:06:13PM +0200, Gunnar Andre Dalsnes wrote: > > > > And locks outside of upgraded regions are resized to fit and kept as standalone locks? > > > > Example: > > A file has write lock from off. 10 to 20 and read lock from off. 30 to 40. > > A new read lock from off. 15 to 35 upgrades both existing overlapped regions. > > > > Now we have three locks? > > -write lock off. 10 to 15 > > -read lock off. 15 to 35 > > -read lock off. 35 to 40 > > > > Or maybe they merged? > > -write lock off. 10 to 15 > > -read lock off. 15 to 40 > > > > The reason i ask is that i want F_GETLK to behave correctly if called afterwards. > >Thinking about it again ... > >Other times you don't merge. If you had 10 to 19, and then get >20 to 29, both same lock, would you merge them? I don't think >so. What do you mean? Would I merge them? >I think the first one is the correct one. > >Btw, I think my English isn't good enough to remember what "to" >means. Is the last number included or not? It's not:-} Sorry... >If it's included >your example was wrong, since you locked byte twice. > > >Kurt Gunnar -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/