gnumach4linux-libre/kern/time_stamp.c

/*
 * 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.
 */

#include <mach/std_types.h>
#include <machine/locore.h>
#include <sys/time.h>
#include <kern/time_stamp.h>

/*
 *	ts.c - kern_timestamp system call.
 */
kern_return_t
kern_timestamp(struct tsval *tsp)
{
/*
	temp.low_val = 0;
	temp.high_val = ts_tick_count;
*/
	time_value_t temp;
	temp = time;

	if (copyout(&temp,
		    tsp,
		    sizeof(struct tsval)) != KERN_SUCCESS)
	    return(KERN_INVALID_ADDRESS);
	return(KERN_SUCCESS);
}

/*
 *	Initialization procedure.
 */

void timestamp_init(void)
{
	ts_tick_count = 0;
}