Alexander Leidinger wrote:
Quoting David Xu <davi...@freebsd.org> (from Mon, 8 Feb 2010 07:31:05
+0000 (UTC)):
Author: davidxu
Date: Mon Feb 8 07:31:05 2010
New Revision: 203657
URL: http://svn.freebsd.org/changeset/base/203657
Log:
Set waiters flag before checking semaphore's counter,
otherwise we might lose a wakeup. Tested on postgresql database
server.
Uhm... if I ktrace a hanging process and I see some semop()s (I assume
it is waiting on some event to happen), where on Linux this process is
working correctly, then I would like to test this patch to see if the
process still has the same problem?
Or differently asked: this affects the operation of semop(2)?
Bye,
Alexander.
This implementation uses umtx, the one in RELENG_8 uses semop() syscall.
They are unrelated.
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
