From 4117cd163977737a5e6633c7117d10aa194304cb Mon Sep 17 00:00:00 2001 From: Alexander Krutwig Date: Thu, 19 Mar 2015 11:38:14 +0100 Subject: timecounter: Import from FreeBSD Update #2271. --- cpukit/score/include/sys/_ffcounter.h | 42 +++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 cpukit/score/include/sys/_ffcounter.h (limited to 'cpukit/score/include/sys/_ffcounter.h') diff --git a/cpukit/score/include/sys/_ffcounter.h b/cpukit/score/include/sys/_ffcounter.h new file mode 100644 index 0000000000..d83c48cd44 --- /dev/null +++ b/cpukit/score/include/sys/_ffcounter.h @@ -0,0 +1,42 @@ +/*- + * Copyright (c) 2011 The University of Melbourne + * All rights reserved. + * + * This software was developed by Julien Ridoux at the University of Melbourne + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD r277406 2015-01-20T03:54:30Z$ + */ + +#ifndef _SYS__FFCOUNTER_H_ +#define _SYS__FFCOUNTER_H_ + +/* + * The feed-forward clock counter. The fundamental element of a feed-forward + * clock is a wide monotonically increasing counter that accumulates at the same + * rate as the selected timecounter. + */ +typedef uint64_t ffcounter; + +#endif /* _SYS__FFCOUNTER_H_ */ -- cgit v1.2.3