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_ 51 typedef __time_t time_t; 52 #endif 53 54 #ifndef _TIMESPEC_DECLARED 55 #define _TIMESPEC_DECLARED 56 struct 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 */ 75 struct 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