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 | #define TIMESPEC_TO_TIMEVAL(tv, ts) { \ |
140 | (tv)->tv_sec = (ts)->tv_sec; \ |
141 | (tv)->tv_usec = (ts)->tv_nsec / 1000; \ |
142 | } |
143 | |
144 | struct timezone { |
145 | int tz_minuteswest; /* minutes west of Greenwich */ |
146 | int tz_dsttime; /* type of dst correction */ |
147 | }; |
148 | #define DST_NONE 0 /* not on dst */ |
149 | #define DST_USA 1 /* USA style dst */ |
150 | #define DST_AUST 2 /* Australian style dst */ |
151 | #define DST_WET 3 /* Western European dst */ |
152 | #define DST_MET 4 /* Middle European dst */ |
153 | #define DST_EET 5 /* Eastern European dst */ |
154 | #define DST_CAN 6 /* Canada */ |
155 | |
156 | /* Operations on timevals. */ |
157 | #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 |
158 | #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) |
159 | #define timercmp(tvp, uvp, cmp) \ |
160 | (((tvp)->tv_sec == (uvp)->tv_sec) ? \ |
161 | ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ |
162 | ((tvp)->tv_sec cmp (uvp)->tv_sec)) |
163 | #define timeradd(tvp, uvp, vvp) \ |
164 | do { \ |
165 | (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ |
166 | (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ |
167 | if ((vvp)->tv_usec >= 1000000) { \ |
168 | (vvp)->tv_sec++; \ |
169 | (vvp)->tv_usec -= 1000000; \ |
170 | } \ |
171 | } while (0) |
172 | #define timersub(tvp, uvp, vvp) \ |
173 | do { \ |
174 | (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ |
175 | (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ |
176 | if ((vvp)->tv_usec < 0) { \ |
177 | (vvp)->tv_sec--; \ |
178 | (vvp)->tv_usec += 1000000; \ |
179 | } \ |
180 | } while (0) |
181 | |
182 | #define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */ |
183 | |
184 | /* |
185 | * Getkerninfo clock information structure |
186 | */ |
187 | struct clockinfo { |
188 | int hz; /* clock frequency */ |
189 | int tick; /* micro-seconds per hz tick */ |
190 | int tickadj; /* clock skew rate for adjtime() */ |
191 | int stathz; /* statistics clock frequency */ |
192 | int profhz; /* profiling clock frequency */ |
193 | }; |
194 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
195 | |
196 | #ifdef XNU_KERNEL_PRIVATE |
197 | #define SETTIME_ENTITLEMENT "com.apple.private.settime" |
198 | #endif |
199 | |
200 | #ifdef KERNEL |
201 | |
202 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
203 | __BEGIN_DECLS |
204 | void microtime(struct timeval *tv); |
205 | void microtime_with_abstime(struct timeval *tv, uint64_t *abstime); |
206 | void microuptime(struct timeval *tv); |
207 | #define getmicrotime(a) microtime(a) |
208 | #define getmicrouptime(a) microuptime(a) |
209 | void nanotime(struct timespec *ts); |
210 | void nanouptime(struct timespec *ts); |
211 | #define getnanotime(a) nanotime(a) |
212 | #define getnanouptime(a) nanouptime(a) |
213 | void timevaladd(struct timeval *t1, struct timeval *t2); |
214 | void timevalsub(struct timeval *t1, struct timeval *t2); |
215 | void timevalfix(struct timeval *t1); |
216 | #ifdef BSD_KERNEL_PRIVATE |
217 | time_t boottime_sec(void); |
218 | void boottime_timeval(struct timeval *tv); |
219 | void inittodr(time_t base); |
220 | int ratecheck(struct timeval *lasttime, const struct timeval *mininterval); |
221 | int ppsratecheck(struct timeval *lasttime, int *curpps, int maxpps); |
222 | #endif /* BSD_KERNEL_PRIVATE */ |
223 | |
224 | __END_DECLS |
225 | |
226 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
227 | |
228 | #else /* !KERNEL */ |
229 | |
230 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
231 | #include <time.h> |
232 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
233 | |
234 | __BEGIN_DECLS |
235 | |
236 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
237 | int adjtime(const struct timeval *, struct timeval *); |
238 | int futimes(int, const struct timeval *); |
239 | int lutimes(const char *, const struct timeval *) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); |
240 | int settimeofday(const struct timeval *, const struct timezone *); |
241 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
242 | |
243 | int getitimer(int, struct itimerval *); |
244 | int gettimeofday(struct timeval * __restrict, void * __restrict); |
245 | |
246 | #include <sys/_select.h> /* select() prototype */ |
247 | |
248 | int setitimer(int, const struct itimerval * __restrict, |
249 | struct itimerval * __restrict); |
250 | int utimes(const char *, const struct timeval *); |
251 | |
252 | __END_DECLS |
253 | |
254 | #endif /* !KERNEL */ |
255 | |
256 | #endif /* !_SYS_TIME_H_ */ |
257 | |