1/*	$OpenBSD: _time.h,v 1.10 2022/10/25 16:30:30 millert Exp $	*/
2
3/*
4 * Copyright (c) 1982, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#ifndef _SYS__TIME_H_
33#define _SYS__TIME_H_
34
35/* Frequency of ticks reported by clock().  */
36#define CLOCKS_PER_SEC  100
37
38#if __BSD_VISIBLE
39/*
40 * Per-process and per-thread clocks encode the PID or TID into the
41 * high bits, with the type in the bottom bits
42 */
43#define __CLOCK_ENCODE(type,id)		((type) | ((id) << 12))
44#define __CLOCK_TYPE(c)			((c) & 0xfff)
45#define __CLOCK_PTID(c)			(((c) >> 12) & 0xfffff)
46#endif
47
48#if __POSIX_VISIBLE >= 199309 || __ISO_C_VISIBLE >= 2011
49#ifndef _TIME_T_DEFINED_
50#define _TIME_T_DEFINED_
51typedef __time_t	time_t;
52#endif
53
54#ifndef _TIMESPEC_DECLARED
55#define _TIMESPEC_DECLARED
56struct timespec {
57	time_t	tv_sec;		/* seconds */
58	long	tv_nsec;	/* and nanoseconds */
59};
60#endif
61#endif
62
63#if __POSIX_VISIBLE >= 199309
64#define CLOCK_REALTIME			0
65#define CLOCK_PROCESS_CPUTIME_ID	2
66#define CLOCK_MONOTONIC			3
67#define CLOCK_THREAD_CPUTIME_ID		4
68#define CLOCK_UPTIME			5
69#define CLOCK_BOOTTIME			6
70
71/*
72 * Structure defined by POSIX 1003.1b to be like a itimerval,
73 * but with timespecs. Used in the timer_*() system calls.
74 */
75struct  itimerspec {
76	struct  timespec it_interval;	/* timer interval */
77	struct  timespec it_value;	/* timer expiration */
78};
79
80#define TIMER_RELTIME	0x0	/* relative timer */
81#define TIMER_ABSTIME	0x1	/* absolute timer */
82
83#endif
84
85#endif /* !_SYS__TIME_H_ */
86