[apple/xnu.git] / osfmk / mach / clock_types.h

/*
 * 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@
 */
/*
 *	File:		clock_types.h
 *	Purpose:	Clock facility header definitions. These
 *				definitons are needed by both kernel and
 *				user-level software.
 */

/*
 *	All interfaces defined here are obsolete.
 */

#ifndef	_MACH_CLOCK_TYPES_H_
#define	_MACH_CLOCK_TYPES_H_

#include <stdint.h>
#include <mach/time_value.h>

/*
 * Type definitions.
 */
typedef	int	alarm_type_t;		/* alarm time type */
typedef int	sleep_type_t;		/* sleep time type */
typedef	int	clock_id_t;			/* clock identification type */
typedef int	clock_flavor_t;		/* clock flavor type */
typedef int	*clock_attr_t;		/* clock attribute type */
typedef int	clock_res_t;		/* clock resolution type */

/*
 * Normal time specification used by the kernel clock facility.
 */
struct mach_timespec {
	unsigned int	tv_sec;			/* seconds */
	clock_res_t		tv_nsec;		/* nanoseconds */
};
typedef struct mach_timespec	mach_timespec_t;

/*
 * Reserved clock id values for default clocks.
 */
#define SYSTEM_CLOCK		0
#define CALENDAR_CLOCK		1

#define REALTIME_CLOCK		0

/*
 * Attribute names.
 */
#define	CLOCK_GET_TIME_RES	1	/* get_time call resolution */
/*							2	 * was map_time call resolution */
#define CLOCK_ALARM_CURRES	3	/* current alarm resolution */
#define CLOCK_ALARM_MINRES	4	/* minimum alarm resolution */
#define CLOCK_ALARM_MAXRES	5	/* maximum alarm resolution */

#define NSEC_PER_USEC	1000		/* nanoseconds per microsecond */
#define USEC_PER_SEC	1000000		/* microseconds per second */
#define NSEC_PER_SEC	1000000000	/* nanoseconds per second */

#define BAD_MACH_TIMESPEC(t)						\
	((t)->tv_nsec < 0 || (t)->tv_nsec >= NSEC_PER_SEC)

/* t1 <=> t2, also (t1 - t2) in nsec with max of +- 1 sec */
#define CMP_MACH_TIMESPEC(t1, t2)					\
	((t1)->tv_sec > (t2)->tv_sec ? +NSEC_PER_SEC :	\
	((t1)->tv_sec < (t2)->tv_sec ? -NSEC_PER_SEC :	\
			(t1)->tv_nsec - (t2)->tv_nsec))

/* t1  += t2 */
#define ADD_MACH_TIMESPEC(t1, t2)								\
  do {															\
	if (((t1)->tv_nsec += (t2)->tv_nsec) >= NSEC_PER_SEC) {		\
		(t1)->tv_nsec -= NSEC_PER_SEC;							\
		(t1)->tv_sec  += 1;										\
	}															\
	(t1)->tv_sec += (t2)->tv_sec;								\
  } while (0)

/* t1  -= t2 */
#define SUB_MACH_TIMESPEC(t1, t2)								\
  do {															\
	if (((t1)->tv_nsec -= (t2)->tv_nsec) < 0) {					\
		(t1)->tv_nsec += NSEC_PER_SEC;							\
		(t1)->tv_sec  -= 1;										\
	}															\
	(t1)->tv_sec -= (t2)->tv_sec;								\
  } while (0)

/*
 * Alarm parameter defines.
 */
#define ALRMTYPE			0xff		/* type (8-bit field)	*/
#define TIME_ABSOLUTE		0x00		/* absolute time */
#define	TIME_RELATIVE		0x01		/* relative time */

#define BAD_ALRMTYPE(t)		(((t) &~ TIME_RELATIVE) != 0)

#endif /* _MACH_CLOCK_TYPES_H_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
6601e61a	4	* @APPLE_LICENSE_HEADER_START@
1c79356b	5	*
6601e61a A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
8f6c56a5	11	*
6601e61a A	12	* This Original Code and all software distributed under the License are
6601e61a A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
6601e61a A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
8f6c56a5	19	*
6601e61a	20	* @APPLE_LICENSE_HEADER_END@
1c79356b A	21	*/
	22	/*
	23	* @OSF_COPYRIGHT@
	24	*/
	25	/*
	26	* File: clock_types.h
	27	* Purpose: Clock facility header definitions. These
	28	* definitons are needed by both kernel and
	29	* user-level software.
	30	*/
	31
	32	/*
91447636	33	* All interfaces defined here are obsolete.
1c79356b A	34	*/
	35
	36	#ifndef _MACH_CLOCK_TYPES_H_
	37	#define _MACH_CLOCK_TYPES_H_
	38
91447636	39	#include <stdint.h>
1c79356b	40	#include <mach/time_value.h>
9bccf70c A	41
	42	/*
	43	* Type definitions.
	44	*/
	45	typedef int alarm_type_t; /* alarm time type */
	46	typedef int sleep_type_t; /* sleep time type */
	47	typedef int clock_id_t; /* clock identification type */
	48	typedef int clock_flavor_t; /* clock flavor type */
	49	typedef int clock_attr_t; / clock attribute type */
	50	typedef int clock_res_t; /* clock resolution type */
	51
	52	/*
	53	* Normal time specification used by the kernel clock facility.
	54	*/
	55	struct mach_timespec {
	56	unsigned int tv_sec; /* seconds */
	57	clock_res_t tv_nsec; /* nanoseconds */
	58	};
	59	typedef struct mach_timespec mach_timespec_t;
	60
1c79356b A	61	/*
	62	* Reserved clock id values for default clocks.
	63	*/
91447636 A	64	#define SYSTEM_CLOCK 0
91447636 A	65	#define CALENDAR_CLOCK 1
1c79356b	66
91447636	67	#define REALTIME_CLOCK 0
1c79356b	68
1c79356b A	69	/*
	70	* Attribute names.
	71	*/
	72	#define CLOCK_GET_TIME_RES 1 /* get_time call resolution */
	73	/* 2 * was map_time call resolution */
	74	#define CLOCK_ALARM_CURRES 3 /* current alarm resolution */
	75	#define CLOCK_ALARM_MINRES 4 /* minimum alarm resolution */
	76	#define CLOCK_ALARM_MAXRES 5 /* maximum alarm resolution */
	77
1c79356b A	78	#define NSEC_PER_USEC 1000 /* nanoseconds per microsecond */
	79	#define USEC_PER_SEC 1000000 /* microseconds per second */
	80	#define NSEC_PER_SEC 1000000000 /* nanoseconds per second */
	81
	82	#define BAD_MACH_TIMESPEC(t) \
	83	((t)->tv_nsec < 0 \|\| (t)->tv_nsec >= NSEC_PER_SEC)
	84
	85	/* t1 <=> t2, also (t1 - t2) in nsec with max of +- 1 sec */
	86	#define CMP_MACH_TIMESPEC(t1, t2) \
	87	((t1)->tv_sec > (t2)->tv_sec ? +NSEC_PER_SEC : \
	88	((t1)->tv_sec < (t2)->tv_sec ? -NSEC_PER_SEC : \
	89	(t1)->tv_nsec - (t2)->tv_nsec))
	90
	91	/* t1 += t2 */
	92	#define ADD_MACH_TIMESPEC(t1, t2) \
	93	do { \
	94	if (((t1)->tv_nsec += (t2)->tv_nsec) >= NSEC_PER_SEC) { \
	95	(t1)->tv_nsec -= NSEC_PER_SEC; \
	96	(t1)->tv_sec += 1; \
	97	} \
	98	(t1)->tv_sec += (t2)->tv_sec; \
	99	} while (0)
	100
	101	/* t1 -= t2 */
	102	#define SUB_MACH_TIMESPEC(t1, t2) \
	103	do { \
	104	if (((t1)->tv_nsec -= (t2)->tv_nsec) < 0) { \
	105	(t1)->tv_nsec += NSEC_PER_SEC; \
	106	(t1)->tv_sec -= 1; \
	107	} \
	108	(t1)->tv_sec -= (t2)->tv_sec; \
	109	} while (0)
	110
	111	/*
	112	* Alarm parameter defines.
	113	*/
	114	#define ALRMTYPE 0xff /* type (8-bit field) */
	115	#define TIME_ABSOLUTE 0x00 /* absolute time */
	116	#define TIME_RELATIVE 0x01 /* relative time */
	117
	118	#define BAD_ALRMTYPE(t) (((t) &~ TIME_RELATIVE) != 0)
	119
	120	#endif /* _MACH_CLOCK_TYPES_H_ */