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