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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#ifndef _KERN_TIME_STAMP_H_
#define _KERN_TIME_STAMP_H_
#include <machine/time_stamp.h>
/*
* time_stamp.h -- definitions for low-overhead timestamps.
*/
struct tsval {
unsigned low_val; /* least significant word */
unsigned high_val; /* most significant word */
};
/*
* Format definitions.
*/
#ifndef TS_FORMAT
/*
* Default case - Just return a tick count for machines that
* don't support or haven't implemented this. Assume 100Hz ticks.
*
* low_val - Always 0.
* high_val - tick count.
*/
#define TS_FORMAT 1
#if KERNEL
unsigned ts_tick_count;
#endif /* KERNEL */
#endif /* TS_FORMAT */
/*
* List of all format definitions for convert_ts_to_tv.
*/
#define TS_FORMAT_DEFAULT 1
#define TS_FORMAT_MMAX 2
extern void timestamp_init(void);
#endif /* _KERN_TIME_STAMP_H_ */
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