Source to osfmk/sys/time.h

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/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 * HISTORY
 * 
 * Revision 1.1.1.1  1998/09/22 21:05:48  wsanchez
 * Import of Mac OS X kernel (~semeria)
 *
 * Revision 1.1.1.1  1998/03/07 02:25:59  wsanchez
 * Import of OSF Mach kernel (~mburg)
 *
 * Revision 1.2.6.1  1994/09/23  03:13:17  ezf
 * 	change marker to not FREE
 * 	[1994/09/22  21:58:56  ezf]
 *
 * Revision 1.2.2.2  1993/06/09  02:55:33  gm
 * 	Added to OSF/1 R1.3 from NMK15.0.
 * 	[1993/06/02  21:31:02  jeffc]
 * 
 * Revision 1.2  1993/04/19  17:17:07  devrcs
 * 	Fixes for ANSI C
 * 	[1993/02/26  14:02:46  sp]
 * 
 * Revision 1.1  1992/09/30  02:36:58  robert
 * 	Initial revision
 * 
 * $EndLog$
 */
/* CMU_HIST */
/*
 * Revision 2.3  91/05/14  17:40:25  mrt
 * 	Correcting copyright
 * 
 * Revision 2.2  91/02/05  17:56:58  mrt
 * 	Changed to new Mach copyright
 * 	[91/02/01  17:49:29  mrt]
 * 
 */
/* CMU_ENDHIST */
/*
 * Mach Operating System
 * Copyright (c) 1991 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  [email protected]
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie Mellon rights
 * to redistribute these changes.
 */
/*
 */
/*
 *	Time-keeper for kernel IO devices.
 *
 *	May or may not have any relation to wall-clock time.
 */

#ifndef _SYS_TIME_H_
#define _SYS_TIME_H_
#include <mach/time_value.h>

extern time_value_t	time;

/*
 * Definitions to keep old code happy.
 */
#define timeval_t time_value_t
#define timeval time_value
#define	tv_sec	seconds
#define	tv_usec	microseconds

#define timerisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp)	\
	((tvp)->tv_sec cmp (uvp)->tv_sec || \
	 (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
#define timerclear(tvp)		(tvp)->tv_sec = (tvp)->tv_usec = 0
#endif /* _SYS_TIME_H_ */