X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=0.4 required=5.0 tests=AWL,BAYES_00,KHOP_THREADED,RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org X-ASG-Debug-ID: 1350337410-04ca72199a7e3a0001-w5GHUG X-Barracuda-Envelope-From: charles DOT stepp AT syniverse DOT com From: Charles Stepp X-Barracuda-Apparent-Source-IP: fe80::993a:b061:1c9f:1c19 To: "cygwin AT cygwin DOT com" Subject: RE: signalfd support X-ASG-Orig-Subj: RE: signalfd support Date: Mon, 15 Oct 2012 21:43:27 +0000 Message-ID: References: <2325766 DOT 6sS9bj5fZA AT bob-kubuntu> <507C7BDB DOT 2090207 AT cygwin DOT com> In-Reply-To: <507C7BDB.2090207@cygwin.com> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-Barracuda-Connect: UNKNOWN[10.12.12.15] X-Barracuda-Start-Time: 1350337410 X-Barracuda-Encrypted: AES256-SHA X-Barracuda-URL: http://205.174.180.167:8000/cgi-mod/mark.cgi X-Barracuda-Bayes: SPAM GLOBAL 0.9954 1.0000 4.2890 X-Barracuda-Spam-Score: 4.29 X-Barracuda-Spam-Status: No, SCORE=4.29 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.2.111444 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: 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 Note-from-DJ: This may be spam Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id q9FLhen2005134 > > On 10/15/2012 4:57 PM, Charles Stepp wrote: > >> Since the performance of Cygwin fifos is orders of magnitude poorer than the equivalent Linux implementation, I've been trying to find an alternative to fifos in my Cygwin port. > >> > >> One possibility is to use a combination of real time signals (which queue) and > >> signalfd to provide a select()'able interface to those signals. Early test > >> code on Linux shows promise. > >> > >> I did a quick check and it doesn't appear that Cygwin supports the signalfd > >> (or eventfd) interface. Are there any plans to include this? If not what > >> should I look at that Cygwin does support that could provide similar functionality? > >> > >> Thanks in advance for all your answers. > >> > >> bob > >> > >> -- > >> Problem reports: http://cygwin.com/problems.html > >> FAQ: http://cygwin.com/faq/ > >> Documentation: http://cygwin.com/docs.html > >> Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > > > > I was thinking, "hmmm...shared memory...that's some fast stuff...", > > but > > > > PC - ~ # ipcs -a > > Bad system call > > > > Oh well...our wonderful godlings who create this cygwin stuff for us > > can only make so much silk purse out of this Windoze pig. > > > > > -- > Larry > > _____________________________________________________________________ > > A: Yes. > > Q: Are you sure? > >> A: Because it reverses the logical flow of conversation. > >>> Q: Why is top posting annoying in email? > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > > Very Nice!! PC - ~ # net start cygserver The CYGWIN cygserver service is starting. The CYGWIN cygserver service was started successfully. PC - ~ # ipcs -a Message Queues: T ID KEY MODE OWNER GROUP CREATOR CGROUP CBYTES QNUM QBYTES LSPID LRPID STIME RTIME CTIME Shared Memory: T ID KEY MODE OWNER GROUP CREATOR CGROUP NATTCH SEGSZ CPID LPID ATIME DTIME CTIME Semaphores: T ID KEY MODE OWNER GROUP CREATOR CGROUP NSEMS OTIME CTIME -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple