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 84 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 85 #include <sys/_types/_timeval64.h> 86 #endif /* !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) */ 87 88 #ifdef KERNEL 89 #include <sys/_types/_user_timespec.h> 90 #include <sys/_types/_user32_timespec.h> 91 #include <sys/_types/_user64_timespec.h> 92 #include <sys/_types/_user_timeval.h> 93 #include <sys/_types/_user32_timeval.h> 94 #include <sys/_types/_user64_timeval.h> 95 #include <sys/_types/_user32_itimerval.h> 96 #include <sys/_types/_user64_itimerval.h> 97 #endif /* KERNEL */ 98 99 #include <sys/_types/_time_t.h> 100 #include <sys/_types/_suseconds_t.h> 101 102 /* 103 * Structure used as a parameter by getitimer(2) and setitimer(2) system 104 * calls. 105 */ 106 struct itimerval { 107 struct timeval it_interval; /* timer interval */ 108 struct timeval it_value; /* current value */ 109 }; 110 111 /* 112 * Names of the interval timers, and structure 113 * defining a timer setting. 114 */ 115 #define ITIMER_REAL 0 116 #define ITIMER_VIRTUAL 1 117 #define ITIMER_PROF 2 118 119 /* 120 * Select uses bit masks of file descriptors in longs. These macros 121 * manipulate such bit fields (the filesystem macros use chars). The 122 * extra protection here is to permit application redefinition above 123 * the default size. 124 */ 125 #include <sys/_types/_fd_setsize.h> 126 #include <sys/_types/_fd_set.h> 127 #include <sys/_types/_fd_clr.h> 128 #include <sys/_types/_fd_isset.h> 129 #include <sys/_types/_fd_zero.h> 130 131 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 132 133 #include <sys/_types/_fd_copy.h> 134 135 #define TIMEVAL_TO_TIMESPEC(tv, ts) { \ 136 (ts)->tv_sec = (tv)->tv_sec; \ 137 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 138 } 139 #ifdef KERNEL 140 #define TIMEVAL64_TO_TIMESPEC(tv, ts){ \ 141 (ts)->tv_sec = (time_t)((tv)->tv_sec); \ 142 (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 143 } 144 #endif 145 #define TIMESPEC_TO_TIMEVAL(tv, ts) { \ 146 (tv)->tv_sec = (ts)->tv_sec; \ 147 (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 148 } 149 150 struct timezone { 151 int tz_minuteswest; /* minutes west of Greenwich */ 152 int tz_dsttime; /* type of dst correction */ 153 }; 154 #define DST_NONE 0 /* not on dst */ 155 #define DST_USA 1 /* USA style dst */ 156 #define DST_AUST 2 /* Australian style dst */ 157 #define DST_WET 3 /* Western European dst */ 158 #define DST_MET 4 /* Middle European dst */ 159 #define DST_EET 5 /* Eastern European dst */ 160 #define DST_CAN 6 /* Canada */ 161 162 /* Operations on timevals. */ 163 #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 164 #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 165 #define timercmp(tvp, uvp, cmp) \ 166 (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 167 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 168 ((tvp)->tv_sec cmp (uvp)->tv_sec)) 169 #define timeradd(tvp, uvp, vvp) \ 170 do { \ 171 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 172 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 173 if ((vvp)->tv_usec >= 1000000) { \ 174 (vvp)->tv_sec++; \ 175 (vvp)->tv_usec -= 1000000; \ 176 } \ 177 } while (0) 178 #define timersub(tvp, uvp, vvp) \ 179 do { \ 180 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 181 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 182 if ((vvp)->tv_usec < 0) { \ 183 (vvp)->tv_sec--; \ 184 (vvp)->tv_usec += 1000000; \ 185 } \ 186 } while (0) 187 188 #define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */ 189 190 /* 191 * Getkerninfo clock information structure 192 */ 193 struct clockinfo { 194 int hz; /* clock frequency */ 195 int tick; /* micro-seconds per hz tick */ 196 int tickadj; /* clock skew rate for adjtime() */ 197 int stathz; /* statistics clock frequency */ 198 int profhz; /* profiling clock frequency */ 199 }; 200 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 201 202 #ifdef XNU_KERNEL_PRIVATE 203 #define SETTIME_ENTITLEMENT "com.apple.private.settime" 204 #endif 205 206 #ifdef KERNEL 207 208 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 209 __BEGIN_DECLS 210 void microtime(struct timeval *tv); 211 void microtime_with_abstime(struct timeval *tv, uint64_t *abstime); 212 void microuptime(struct timeval *tv); 213 #define getmicrotime(a) microtime(a) 214 #define getmicrouptime(a) microuptime(a) 215 void nanotime(struct timespec *ts); 216 void nanouptime(struct timespec *ts); 217 #define getnanotime(a) nanotime(a) 218 #define getnanouptime(a) nanouptime(a) 219 void timevaladd(struct timeval *t1, struct timeval *t2); 220 void timevalsub(struct timeval *t1, struct timeval *t2); 221 void timevalfix(struct timeval *t1); 222 #ifdef BSD_KERNEL_PRIVATE 223 time_t boottime_sec(void); 224 void boottime_timeval(struct timeval *tv); 225 void inittodr(time_t base); 226 int ratecheck(struct timeval *lasttime, const struct timeval *mininterval); 227 int ppsratecheck(struct timeval *lasttime, int *curpps, int maxpps); 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) 243 int adjtime(const struct timeval *, struct timeval *); 244 int futimes(int, const struct timeval *); 245 int lutimes(const char *, const struct timeval *) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 246 int settimeofday(const struct timeval *, const struct timezone *); 247 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 248 249 int getitimer(int, struct itimerval *); 250 int gettimeofday(struct timeval * __restrict, void * __restrict); 251 252 #include <sys/_select.h> /* select() prototype */ 253 254 int setitimer(int, const struct itimerval * __restrict, 255 struct itimerval * __restrict); 256 int utimes(const char *, const struct timeval *); 257 258 __END_DECLS 259 260 #endif /* !KERNEL */ 261 262 #endif /* !_SYS_TIME_H_ */ 263