On Oct 15 23:30, Sybille Ebert wrote: > >>>> The problem also appears in sshd service, eventhough it does not depend > >>>> on cygserver. I installed sshd using ssh-host-config and manually > >>>> stopped cygserver. And even with only sshd running, there was still a > >>>> long delay at logoff/shutdown! > >>> Which shows that the delay isn't cygserver specific, but occurs in the > >>> cygwin DLL somehow. I'm somewhat low on time right now but I'll look > >>> into this at one point. > >> Thank you. Please let me know if I could be of any assistance. > >>[...] > > I can reproduce it, too. However, I can not reproduce it on Windows > > Server 2008 x64 so it seems a problem of the NT 5.2 kernel alone. > > I tried debugging and changed a couple of places in the DLL as well > > as in cygrunsrv trying to track it down. The hang does not occur in > > Cygwin code, afaics, but in OS code and changing related parts of the > > custom console handling doesn't change anything. That's all I can do > > for now, sorry. > > Could you explain the interaction between Cygwin and OS in the related > part? I would like to have a look at it, but I need some directions.
Well, there's no real interaction. When you logoff, the service application (which is cygrunsrv, not cygserver or sshd) gets a console event CTRL_LOGOFF_EVENT. The Cygwin DLL has a handler function (exceptions.cc:ctrl_c_handler) which doesn't do much on CTRL_LOGOFF_EVENT. For testing I disabled everything and I even added a ConsoleCtrlHandler function to cygrunsrv which returns TRUE. The function is called and that's it. After that, the system hangs out for ~30 seconds for no apparent reason. Still note that this only happens on the 5.2 x64 kernel, not on the 6.0 x64 kernel, so I don't see how this is actually Cygwin's fault or if we can do anything against that effect. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- 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/
