Hello Jeff & all, > Von: Jeff MAURY <jeffma...@jeffmaury.com> > Datum: Mon, 25 Jun 2012 18:46:02 +0200
> Konstantin, > > your explanations are very interesting but unclear to me: what do you > call the inactivity timer ? When it is started ? After the request has > been processed by the servlet ? In that case, I see no difference > between a servlet that launch a process and another one. > It seems to me that a process that is launched does not inhererits > handles from its parent process but it's possible that under Windows, > it's an option so it would be interesting to watch. > > Jeff > Sorry, I'm just a normal Tomcat user, and I don't know how exactly the APR connector and its Timeout works, so I am unable to answer that. Howewer, I did some further observations: -When I perform a request to the servlet that opens wordpad.exe, the TCP connection from Tomcat does not close after the timeout - even when I kill the Tomcat process (java.exe), the TCP connection is still open. If I kill wordpad.exe, then finally the connection is closed/aborted. -When I have 1 TCP connection open to Tomcat and the servlet starts the little C program, Task manager shows that it has 11 handles. However, when I have 5 TCP connections open to Tomcat, and do the request on one of them, Task maanger shows that the C program has 15 handles - so four more handles when there are four more connections to Tomcat. All of that 5 TCP connections don't close until I kill that process. That seems to me to be an indication that socket handles could be inherited by the child processes that are startet by ProcessBuilder from tomcat. A msdn article mentions how to create a new process using CreateProcess(); it also mentions that socket handles can be inherited: http://msdn.microsoft.com/en-us/library/windows/desktop/ms724466.aspx However, as I don't have much knowledge about programming with WinAPIs, I don't know why those handles are inherited (the MSDN article mentions that a handle must be specified as inheritable when created, to allow a child process to inherit it). Maybe someone with more WinAPI/Tomcat Native knowledge can help here. Regards, Konstantin Preißer --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
