[apple/xnu.git] / osfmk / sys / time.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The 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, QUIET ENJOYMENT 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  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 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_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
43866e37	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
43866e37 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
43866e37 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* @OSF_COPYRIGHT@
	27	*/
	28	/*
	29	* HISTORY
	30	*
	31	* Revision 1.1.1.1 1998/09/22 21:05:48 wsanchez
	32	* Import of Mac OS X kernel (~semeria)
	33	*
	34	* Revision 1.1.1.1 1998/03/07 02:25:59 wsanchez
	35	* Import of OSF Mach kernel (~mburg)
	36	*
	37	* Revision 1.2.6.1 1994/09/23 03:13:17 ezf
	38	* change marker to not FREE
	39	* [1994/09/22 21:58:56 ezf]
	40	*
	41	* Revision 1.2.2.2 1993/06/09 02:55:33 gm
	42	* Added to OSF/1 R1.3 from NMK15.0.
	43	* [1993/06/02 21:31:02 jeffc]
	44	*
	45	* Revision 1.2 1993/04/19 17:17:07 devrcs
	46	* Fixes for ANSI C
	47	* [1993/02/26 14:02:46 sp]
	48	*
	49	* Revision 1.1 1992/09/30 02:36:58 robert
	50	* Initial revision
	51	*
	52	* $EndLog$
	53	*/
	54	/* CMU_HIST */
	55	/*
	56	* Revision 2.3 91/05/14 17:40:25 mrt
	57	* Correcting copyright
	58	*
	59	* Revision 2.2 91/02/05 17:56:58 mrt
	60	* Changed to new Mach copyright
	61	* [91/02/01 17:49:29 mrt]
	62	*
	63	*/
	64	/* CMU_ENDHIST */
	65	/*
	66	* Mach Operating System
	67	* Copyright (c) 1991 Carnegie Mellon University
	68	* All Rights Reserved.
	69	*
	70	* Permission to use, copy, modify and distribute this software and its
	71	* documentation is hereby granted, provided that both the copyright
	72	* notice and this permission notice appear in all copies of the
	73	* software, derivative works or modified versions, and any portions
	74	* thereof, and that both notices appear in supporting documentation.
	75	*
	76	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	77	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	78	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	79	*
	80	* Carnegie Mellon requests users of this software to return to
	81	*
	82	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	83	* School of Computer Science
	84	* Carnegie Mellon University
	85	* Pittsburgh PA 15213-3890
86	*
87	* any improvements or extensions that they make and grant Carnegie Mellon rights
88	* to redistribute these changes.
89	*/
90	/*
91	*/
92	/*
93	* Time-keeper for kernel IO devices.
94	*
95	* May or may not have any relation to wall-clock time.
96	*/
97
98	#ifndef _SYS_TIME_H_
99	#define _SYS_TIME_H_
100	#include <mach/time_value.h>
101
102	extern time_value_t time;
103
104	/*
105	* Definitions to keep old code happy.
106	*/
107	#define timeval_t time_value_t
108	#define timeval time_value
109	#define tv_sec seconds
110	#define tv_usec microseconds
111
112	#define timerisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)
113	#define timercmp(tvp, uvp, cmp) \
114	((tvp)->tv_sec cmp (uvp)->tv_sec \|\| \
115	(tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
116	#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
117	#endif /* _SYS_TIME_H_ */