K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2013-04-08T19:40:53.591361Z
K 7
svn:log
V 369
Merge from projects/counters: counter(9).

  Introduce counter(9) API, that implements fast and raceless counters,
provided (but not limited to) for gathering of statistical data.

See http://lists.freebsd.org/pipermail/freebsd-arch/2013-April/014204.html
for more details.

In collaboration with:	kib
Reviewed by:		luigi
Tested by:		ae, ray
Sponsored by:		Nginx, Inc.

END