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#else /* !KERNEL */ 72#include <Availability.h> 73#endif /* KERNEL */ 74 75/* 76 * [XSI] The fd_set type shall be defined as described in <sys/select.h>. 77 * The timespec structure shall be defined as described in <time.h> 78 */ 79#define __need_fd_set 80#define __need_struct_timespec 81#define __need_struct_timeval 82#ifdef KERNEL 83#define __need_struct_user_timespec 84#define __need_struct_user32_timespec 85#define __need_struct_user64_timespec 86#define __need_struct_user_timeval 87#define __need_struct_user32_timeval 88#define __need_struct_user64_timeval 89#define __need_struct_user32_itimerval 90#define __need_struct_user64_itimerval 91#endif /* KERNEL */ 92#include <sys/_structs.h> 93 94#ifndef _TIME_T 95#define _TIME_T 96typedef __darwin_time_t time_t; 97#endif 98 99#ifndef _SUSECONDS_T 100#define _SUSECONDS_T 101typedef __darwin_suseconds_t suseconds_t; 102#endif 103 104/* 105 * Structure used as a parameter by getitimer(2) and setitimer(2) system 106 * calls. 107 */ 108struct itimerval { 109 struct timeval it_interval; /* timer interval */ 110 struct timeval it_value; /* current value */ 111}; 112 113/* 114 * Names of the interval timers, and structure 115 * defining a timer setting. 116 */ 117#define ITIMER_REAL 0 118#define ITIMER_VIRTUAL 1 119#define ITIMER_PROF 2 120 121/* 122 * Select uses bit masks of file descriptors in longs. These macros 123 * manipulate such bit fields (the filesystem macros use chars). The 124 * extra protection here is to permit application redefinition above 125 * the default size. 126 */ 127#ifndef FD_SETSIZE 128#define FD_SETSIZE __DARWIN_FD_SETSIZE 129#endif /* FD_SETSIZE */ 130#ifndef FD_SET 131#define FD_SET(n, p) __DARWIN_FD_SET(n, p) 132#endif /* FD_SET */ 133#ifndef FD_CLR 134#define FD_CLR(n,p) __DARWIN_FD_CLR(n, p) 135#endif /* FD_CLR */ 136#ifndef FD_ISSET 137#define FD_ISSET(n, p) __DARWIN_FD_ISSET(n, p) 138#endif /* FD_ISSET */ 139#ifndef FD_ZERO 140#define FD_ZERO(p) __DARWIN_FD_ZERO(p) 141#endif /* FD_ZERO */ 142 143#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 144 145#ifndef FD_COPY 146#define FD_COPY(f, t) __DARWIN_FD_COPY(f, t) 147#endif /* FD_COPY */ 148 149#define TIMEVAL_TO_TIMESPEC(tv, ts) { \ 150 (ts)->tv_sec = (tv)->tv_sec; \ 151 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 152} 153#define TIMESPEC_TO_TIMEVAL(tv, ts) { \ 154 (tv)->tv_sec = (ts)->tv_sec; \ 155 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 156} 157 158struct timezone { 159 int tz_minuteswest; /* minutes west of Greenwich */ 160 int tz_dsttime; /* type of dst correction */ 161}; 162#define DST_NONE 0 /* not on dst */ 163#define DST_USA 1 /* USA style dst */ 164#define DST_AUST 2 /* Australian style dst */ 165#define DST_WET 3 /* Western European dst */ 166#define DST_MET 4 /* Middle European dst */ 167#define DST_EET 5 /* Eastern European dst */ 168#define DST_CAN 6 /* Canada */ 169 170/* Operations on timevals. */ 171#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 172#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 173#define timercmp(tvp, uvp, cmp) \ 174 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 175 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 176 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 177#define timeradd(tvp, uvp, vvp) \ 178 do { \ 179 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 180 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 181 if ((vvp)->tv_usec >= 1000000) { \ 182 (vvp)->tv_sec++; \ 183 (vvp)->tv_usec -= 1000000; \ 184 } \ 185 } while (0) 186#define timersub(tvp, uvp, vvp) \ 187 do { \ 188 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 189 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 190 if ((vvp)->tv_usec < 0) { \ 191 (vvp)->tv_sec--; \ 192 (vvp)->tv_usec += 1000000; \ 193 } \ 194 } while (0) 195 196#define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */ 197 198/* 199 * Getkerninfo clock information structure 200 */ 201struct clockinfo { 202 int hz; /* clock frequency */ 203 int tick; /* micro-seconds per hz tick */ 204 int tickadj; /* clock skew rate for adjtime() */ 205 int stathz; /* statistics clock frequency */ 206 int profhz; /* profiling clock frequency */ 207}; 208#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 209 210#ifdef KERNEL 211 212#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 213__BEGIN_DECLS 214void microtime(struct timeval *tv); 215void microuptime(struct timeval *tv); 216#define getmicrotime(a) microtime(a) 217#define getmicrouptime(a) microuptime(a) 218void nanotime(struct timespec *ts); 219void nanouptime(struct timespec *ts); 220#define getnanotime(a) nanotime(a) 221#define getnanouptime(a) nanouptime(a) 222void timevaladd(struct timeval *t1, struct timeval *t2); 223void timevalsub(struct timeval *t1, struct timeval *t2); 224void timevalfix(struct timeval *t1); 225#ifdef BSD_KERNEL_PRIVATE 226time_t boottime_sec(void); 227void inittodr(time_t base) __attribute__((section("__TEXT, initcode"))); 228#endif /* BSD_KERNEL_PRIVATE */ 229 230__END_DECLS 231 232#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 233 234#else /* !KERNEL */ 235 236#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 237#include <time.h> 238#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 239 240__BEGIN_DECLS 241 242#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 243int adjtime(const struct timeval *, struct timeval *); 244int futimes(int, const struct timeval *); 245int lutimes(const char *, const struct timeval *) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 246int settimeofday(const struct timeval *, const struct timezone *); 247#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 248 249int getitimer(int, struct itimerval *); 250int gettimeofday(struct timeval * __restrict, void * __restrict); 251 252#include <sys/_select.h> /* select() prototype */ 253 254int setitimer(int, const struct itimerval * __restrict, 255 struct itimerval * __restrict); 256int utimes(const char *, const struct timeval *); 257 258__END_DECLS 259 260#endif /* !KERNEL */ 261 262#endif /* !_SYS_TIME_H_ */ 263