1/* 2 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29/* 30 * Copyright (c) 1982, 1986, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by the University of 44 * California, Berkeley and its contributors. 45 * 4. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)time.h 8.2 (Berkeley) 7/10/94 62 */ 63 64#ifndef _SYS_TIME_H_ 65#define _SYS_TIME_H_ 66 67#include <sys/cdefs.h> 68#include <sys/_types.h> 69#ifdef KERNEL 70#include <machine/types.h> /* user_time_t */ 71#include <stdint.h> /* uint64_t */ 72#else /* !KERNEL */ 73#include <Availability.h> 74#endif /* KERNEL */ 75 76/* 77 * [XSI] The fd_set type shall be defined as described in <sys/select.h>. 78 * The timespec structure shall be defined as described in <time.h> 79 */ 80#include <sys/_types/_fd_def.h> 81#include <sys/_types/_timespec.h> 82#include <sys/_types/_timeval.h> 83#ifdef KERNEL 84#include <sys/_types/_user_timespec.h> 85#include <sys/_types/_user32_timespec.h> 86#include <sys/_types/_user64_timespec.h> 87#include <sys/_types/_user_timeval.h> 88#include <sys/_types/_user32_timeval.h> 89#include <sys/_types/_user64_timeval.h> 90#include <sys/_types/_user32_itimerval.h> 91#include <sys/_types/_user64_itimerval.h> 92#endif /* KERNEL */ 93 94#include <sys/_types/_time_t.h> 95#include <sys/_types/_suseconds_t.h> 96 97/* 98 * Structure used as a parameter by getitimer(2) and setitimer(2) system 99 * calls. 100 */ 101struct itimerval { 102 struct timeval it_interval; /* timer interval */ 103 struct timeval it_value; /* current value */ 104}; 105 106/* 107 * Names of the interval timers, and structure 108 * defining a timer setting. 109 */ 110#define ITIMER_REAL 0 111#define ITIMER_VIRTUAL 1 112#define ITIMER_PROF 2 113 114/* 115 * Select uses bit masks of file descriptors in longs. These macros 116 * manipulate such bit fields (the filesystem macros use chars). The 117 * extra protection here is to permit application redefinition above 118 * the default size. 119 */ 120#include <sys/_types/_fd_setsize.h> 121#include <sys/_types/_fd_set.h> 122#include <sys/_types/_fd_clr.h> 123#include <sys/_types/_fd_isset.h> 124#include <sys/_types/_fd_zero.h> 125 126#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 127 128#include <sys/_types/_fd_copy.h> 129 130#define TIMEVAL_TO_TIMESPEC(tv, ts) { \ 131 (ts)->tv_sec = (tv)->tv_sec; \ 132 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 133} 134#define TIMESPEC_TO_TIMEVAL(tv, ts) { \ 135 (tv)->tv_sec = (ts)->tv_sec; \ 136 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 137} 138 139struct timezone { 140 int tz_minuteswest; /* minutes west of Greenwich */ 141 int tz_dsttime; /* type of dst correction */ 142}; 143#define DST_NONE 0 /* not on dst */ 144#define DST_USA 1 /* USA style dst */ 145#define DST_AUST 2 /* Australian style dst */ 146#define DST_WET 3 /* Western European dst */ 147#define DST_MET 4 /* Middle European dst */ 148#define DST_EET 5 /* Eastern European dst */ 149#define DST_CAN 6 /* Canada */ 150 151/* Operations on timevals. */ 152#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 153#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 154#define timercmp(tvp, uvp, cmp) \ 155 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 156 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 157 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 158#define timeradd(tvp, uvp, vvp) \ 159 do { \ 160 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 161 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 162 if ((vvp)->tv_usec >= 1000000) { \ 163 (vvp)->tv_sec++; \ 164 (vvp)->tv_usec -= 1000000; \ 165 } \ 166 } while (0) 167#define timersub(tvp, uvp, vvp) \ 168 do { \ 169 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 170 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 171 if ((vvp)->tv_usec < 0) { \ 172 (vvp)->tv_sec--; \ 173 (vvp)->tv_usec += 1000000; \ 174 } \ 175 } while (0) 176 177#define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */ 178 179/* 180 * Getkerninfo clock information structure 181 */ 182struct clockinfo { 183 int hz; /* clock frequency */ 184 int tick; /* micro-seconds per hz tick */ 185 int tickadj; /* clock skew rate for adjtime() */ 186 int stathz; /* statistics clock frequency */ 187 int profhz; /* profiling clock frequency */ 188}; 189#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 190 191#ifdef KERNEL 192 193#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 194__BEGIN_DECLS 195void microtime(struct timeval *tv); 196void microtime_with_abstime(struct timeval *tv, uint64_t *abstime); 197void microuptime(struct timeval *tv); 198#define getmicrotime(a) microtime(a) 199#define getmicrouptime(a) microuptime(a) 200void nanotime(struct timespec *ts); 201void nanouptime(struct timespec *ts); 202#define getnanotime(a) nanotime(a) 203#define getnanouptime(a) nanouptime(a) 204void timevaladd(struct timeval *t1, struct timeval *t2); 205void timevalsub(struct timeval *t1, struct timeval *t2); 206void timevalfix(struct timeval *t1); 207#ifdef BSD_KERNEL_PRIVATE 208time_t boottime_sec(void); 209void inittodr(time_t base); 210int ratecheck(struct timeval *lasttime, const struct timeval *mininterval); 211int ppsratecheck(struct timeval *lasttime, int *curpps, int maxpps); 212#endif /* BSD_KERNEL_PRIVATE */ 213 214__END_DECLS 215 216#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 217 218#else /* !KERNEL */ 219 220#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 221#include <time.h> 222#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 223 224__BEGIN_DECLS 225 226#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 227int adjtime(const struct timeval *, struct timeval *); 228int futimes(int, const struct timeval *); 229int lutimes(const char *, const struct timeval *) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 230int settimeofday(const struct timeval *, const struct timezone *); 231#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 232 233int getitimer(int, struct itimerval *); 234int gettimeofday(struct timeval * __restrict, void * __restrict); 235 236#include <sys/_select.h> /* select() prototype */ 237 238int setitimer(int, const struct itimerval * __restrict, 239 struct itimerval * __restrict); 240int utimes(const char *, const struct timeval *); 241 242__END_DECLS 243 244#endif /* !KERNEL */ 245 246#endif /* !_SYS_TIME_H_ */ 247