X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-3.7 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_HOSTKARMA_W,RCVD_IN_HOSTKARMA_WL,RP_MATCHES_RCVD,SPF_HELO_PASS X-Spam-Check-By: sourceware.org X-IronPortListener: Outbound_SMTP X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ao8JAJ61r1CcKEev/2dsb2JhbAA8CIYnuR90FmwHgh4BAQEDARIREUoLAgEIDQ0CBiACAgIdExUQAgQbGodlBqJMigeSToEiiyyDFzJhA401jlmKNYJvgh0 From: "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" To: "cygwin AT cygwin DOT com" Subject: RE: Possible race in SYSV IPC (semaphores) Date: Fri, 23 Nov 2012 17:47:47 +0000 Message-ID: <5F8AAC04F9616747BC4CC0E803D5907D0162E7@MLBXv04.nih.gov> References: <5F8AAC04F9616747BC4CC0E803D5907D012856 AT MLBXV09 DOT nih DOT gov> <20121123113605 DOT GN17347 AT calimero DOT vinschen DOT de> <20121123131020 DOT GR17347 AT calimero DOT vinschen DOT de> <20121123133332 DOT GU17347 AT calimero DOT vinschen DOT de> <20121123164404 DOT GX17347 AT calimero DOT vinschen DOT de> <5F8AAC04F9616747BC4CC0E803D5907D0162C6 AT MLBXv04 DOT nih DOT gov> <20121123172937 DOT GA12624 AT calimero DOT vinschen DOT de> In-Reply-To: <20121123172937.GA12624@calimero.vinschen.de> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by delorie.com id qANHm0am027195 > I agree. I'll do that in the next couple of days. Thank you. Please let me know when you do, so that I can check the relevant snapshot out. Incidentally, have you been able to confirm the dead-locking that I reported earlier (below)? I just ran the patched cygserver with the "-d -l 7" arguments, along with my test case, and both dead-locked just as before. > The test case attached from my earlier post from today, also shows > a race (dead-lock, actually) occurring in CYGSERVER, when it is run > with the "-d -l 7" command line (even when it is only one application, > the test case is using it). There is an internal disconcert between > the cygserver threads. > > The log ends with this, and there is no way to stop the server > (like with "cygrunsrv -E") other than killing it from the task > manager. Anton Lavrentiev Contractor NIH/NLM/NCBI