master
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#include <Availability.h>
70
71
72/*
73 * [XSI] The fd_set type shall be defined as described in <sys/select.h>.
74 * The timespec structure shall be defined as described in <time.h>
75 */
76#include <sys/_types/_fd_def.h>
77#include <sys/_types/_timespec.h>
78#include <sys/_types/_timeval.h>
79
80#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
81#include <sys/_types/_timeval64.h>
82#endif /* !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) */
83
84
85#include <sys/_types/_time_t.h>
86#include <sys/_types/_suseconds_t.h>
87
88/*
89 * Structure used as a parameter by getitimer(2) and setitimer(2) system
90 * calls.
91 */
92struct itimerval {
93 struct timeval it_interval; /* timer interval */
94 struct timeval it_value; /* current value */
95};
96
97/*
98 * Names of the interval timers, and structure
99 * defining a timer setting.
100 */
101#define ITIMER_REAL 0
102#define ITIMER_VIRTUAL 1
103#define ITIMER_PROF 2
104
105/*
106 * Select uses bit masks of file descriptors in longs. These macros
107 * manipulate such bit fields (the filesystem macros use chars). The
108 * extra protection here is to permit application redefinition above
109 * the default size.
110 */
111#include <sys/_types/_fd_setsize.h>
112#include <sys/_types/_fd_set.h>
113#include <sys/_types/_fd_clr.h>
114#include <sys/_types/_fd_isset.h>
115#include <sys/_types/_fd_zero.h>
116
117#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
118
119#include <sys/_types/_fd_copy.h>
120
121#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
122 (ts)->tv_sec = (tv)->tv_sec; \
123 (ts)->tv_nsec = (tv)->tv_usec * 1000; \
124}
125#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
126 (tv)->tv_sec = (ts)->tv_sec; \
127 (tv)->tv_usec = (__darwin_suseconds_t)((ts)->tv_nsec / 1000); \
128}
129
130struct timezone {
131 int tz_minuteswest; /* minutes west of Greenwich */
132 int tz_dsttime; /* type of dst correction */
133};
134#define DST_NONE 0 /* not on dst */
135#define DST_USA 1 /* USA style dst */
136#define DST_AUST 2 /* Australian style dst */
137#define DST_WET 3 /* Western European dst */
138#define DST_MET 4 /* Middle European dst */
139#define DST_EET 5 /* Eastern European dst */
140#define DST_CAN 6 /* Canada */
141
142/* Operations on timevals. */
143#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
144#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
145#define timercmp(tvp, uvp, cmp) \
146 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
147 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
148 ((tvp)->tv_sec cmp (uvp)->tv_sec))
149#define timeradd(tvp, uvp, vvp) \
150 do { \
151 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
152 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
153 if ((vvp)->tv_usec >= 1000000) { \
154 (vvp)->tv_sec++; \
155 (vvp)->tv_usec -= 1000000; \
156 } \
157 } while (0)
158#define timersub(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 < 0) { \
163 (vvp)->tv_sec--; \
164 (vvp)->tv_usec += 1000000; \
165 } \
166 } while (0)
167
168#define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */
169
170/*
171 * Getkerninfo clock information structure
172 */
173struct clockinfo {
174 int hz; /* clock frequency */
175 int tick; /* micro-seconds per hz tick */
176 int tickadj; /* clock skew rate for adjtime() */
177 int stathz; /* statistics clock frequency */
178 int profhz; /* profiling clock frequency */
179};
180#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
181
182
183
184#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
185#include <time.h>
186#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
187
188__BEGIN_DECLS
189
190#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
191int adjtime(const struct timeval *, struct timeval *);
192int futimes(int, const struct timeval *);
193int lutimes(const char *, const struct timeval *) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
194int settimeofday(const struct timeval *, const struct timezone *);
195#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
196
197int getitimer(int, struct itimerval *);
198int gettimeofday(struct timeval * __restrict, void * __restrict);
199
200__END_DECLS
201
202#include <sys/_select.h> /* select() prototype */
203
204__BEGIN_DECLS
205
206int setitimer(int, const struct itimerval * __restrict,
207 struct itimerval * __restrict);
208int utimes(const char *, const struct timeval *);
209
210__END_DECLS
211
212
213
214#endif /* !_SYS_TIME_H_ */