On Mon, Dec 02, 2013 at 10:24:55AM -0500, Christopher Faylor wrote: >On Mon, Dec 02, 2013 at 01:47:09PM +0800, George M. Florendo wrote: >>On 11/29/13, Christopher Faylor wrote: >>> On Thu, Nov 28, 2013 at 10:55:04AM -0500, Christopher Faylor wrote: >>>>On Thu, Nov 28, 2013 at 02:08:13PM +0100, Corinna Vinschen wrote: >>>>>On Nov 28 15:20, George M. Florendo wrote: >>>>>> Hi, >>>>>> >>>>>> I run a non cygwin apache process named httpd.exe. Checking it with >>>>>> "ps -W" shows a listing of the same process (with PID 4560 in this >>>>>> case) twice. >>>>>> >>>>>> $ ps -W | grep httpd >>>>>> 4560 1604 4560 5304 pty0 1000 09:55:21 >>>>>> /home/georgeflorendo/wamp/bin/apache/Apache2.4.4/bin/httpd >>>>>> 4560 1604 4560 5304 pty0 1000 09:55:21 >>>>>> /home/georgeflorendo/wamp/bin/apache/Apache2.4.4/bin/httpd >>>>>> 7508 0 0 7508 ? 0 15:09:50 >>>>>> C:\cygwin\home\georgeflorendo\wamp\bin\apache\Apache2.4.4\bin\httpd.exe >>>>>> >>>>>> Doing a "ps aux" shows it only once. >>>>>> >>>>>> $ ps aux >>>>>> PID PPID PGID WINPID TTY UID STIME COMMAND >>>>>> 1340 7856 1340 5720 pty5 1000 15:13:50 /usr/bin/ps >>>>>> 1604 4008 1604 2292 pty0 1000 09:17:01 >>>>>> /usr/bin/bash >>>>>> 4008 1 4008 4008 ? 1000 09:17:00 >>>>>> /usr/bin/mintty >>>>>> 4560 1604 4560 5304 pty0 1000 09:55:21 >>>>>> /home/georgeflorendo/wamp/bin/apache/Apache2.4.4/bin/httpd >>>>>> >>>>>> <snipped> >>>>>> >>>>>> Is it correct that ps -W shows the same process twice? >>>>> >>>>>Not exactly but it could happen. Can you try the latest snapshot Cygwin >>>>>DLL from http://cygwin.com/snapshots/ and see if it fixes the problem? >>>> >>>>I don't see anything in the ChangeLog which would affect this and I'd >>>>be concerned if there was. >>>> >>>>There are scenarios where two different windows pids can be associated >>>>with the same Cygwin pid. You should only see it when you do a "ps -W". >>>> >>>>So, AFAICT, the correct answer to the "Is it correct" is "Yes'. >>> >>> Oops. Sorry. Just noticed that the pids weren't "different". There >>> are still pathological situations where a pid can show up twice when >>> doing a "ps -W". I've seen the issue before but fixing it would involve >>> a global process lock which would slow down Cygwin for the benefit of >>> a more accurate "ps -W". >> >>Oh, I'm sorry too. Didn't get to read your first sentence earlier. >>I'd rather have a faster cygwin more than a more accurate "ps -W". >> >>Thanks for all your help. > >Thanks for understanding. I will try to revisit this code sometime in >the near future to see if I can do something about this case. I had a >glimmer of an idea about how to fix this in the thinking room recently.
This problem should be fixed in the latest snapshot. cgf -- 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
