From: "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr@ncbi.nlm.nih.gov>
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: RE: Possible race in SYSV IPC (semaphores)
Date: Mon, 26 Nov 2012 18:09:00 -0000 [thread overview]
Message-ID: <5F8AAC04F9616747BC4CC0E803D5907D016FEA@MLBXv04.nih.gov> (raw)
In-Reply-To: <20121126125342.GA3800@calimero.vinschen.de>
> I just checked in the change.
Thank you. I will test it as soon as it's available in a snapshot.
> ...especially since I can't reproduce this. I tried with cygserver
> before and after my patch and in both cases your semaphore testcase
> worked as expected with -d -l 7.
I see. Maybe this will help. My sequence of actions:
In an elevated cmd.exe, from Cygwin's /bin:
cygrunsrv.exe -I cygserver -x /usr/sbin/cygserver.exe -a "-d -l 7"
cygrunsrv.exe -S cygserver
In a regular cmd.exe:
a.exe
(this is my testcase that locks/unlocks the semaphores).
It never gets past iteration 1000.
Also, if I start cygserver just as a regular process (not as a background
thing), so that it logs right to the window, it does not lock up.
Anton Lavrentiev
Contractor NIH/NLM/NCBI
next prev parent reply other threads:[~2012-11-26 18:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-19 21:06 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-11-23 11:37 ` Corinna Vinschen
2012-11-23 13:11 ` Corinna Vinschen
2012-11-23 13:34 ` Corinna Vinschen
2012-11-23 16:44 ` Corinna Vinschen
2012-11-23 17:16 ` Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-11-23 17:29 ` Corinna Vinschen
2012-11-23 17:47 ` Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-11-23 17:59 ` Corinna Vinschen
2012-11-26 12:54 ` Corinna Vinschen
2012-11-26 18:09 ` Lavrentiev, Anton (NIH/NLM/NCBI) [C] [this message]
2012-11-26 18:14 ` Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-11-27 7:13 ` Corinna Vinschen
2012-11-27 14:37 ` Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-11-28 21:20 ` Lavrentiev, Anton (NIH/NLM/NCBI) [C]
-- strict thread matches above, loose matches on Subject: below --
2012-11-19 16:23 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-10-26 18:37 Lavrentiev, Anton (NIH/NLM/NCBI) [C]
2012-10-27 10:24 ` Corinna Vinschen
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