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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
23: /*
24: * Copyright (c) 1982, 1986, 1993
25: * The Regents of the University of California. All rights reserved.
26: *
27: * Redistribution and use in source and binary forms, with or without
28: * modification, are permitted provided that the following conditions
29: * are met:
30: * 1. Redistributions of source code must retain the above copyright
31: * notice, this list of conditions and the following disclaimer.
32: * 2. Redistributions in binary form must reproduce the above copyright
33: * notice, this list of conditions and the following disclaimer in the
34: * documentation and/or other materials provided with the distribution.
35: * 3. All advertising materials mentioning features or use of this software
36: * must display the following acknowledgement:
37: * This product includes software developed by the University of
38: * California, Berkeley and its contributors.
39: * 4. Neither the name of the University nor the names of its contributors
40: * may be used to endorse or promote products derived from this software
41: * without specific prior written permission.
42: *
43: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
44: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
47: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53: * SUCH DAMAGE.
54: *
55: * @(#)time.h 8.2 (Berkeley) 7/10/94
56: */
57:
58: #ifndef _SYS_TIME_H_
59: #define _SYS_TIME_H_
60:
61: #include <sys/types.h>
62:
63: #define getmicrouptime(a) microtime(a)
64: #define getmicrotime(a) microtime(a)
65: /*
66: * Structure returned by gettimeofday(2) system call,
67: * and used in other calls.
68: */
69: struct timeval {
70: int32_t tv_sec; /* seconds */
71: int32_t tv_usec; /* and microseconds */
72: };
73:
74: /*
75: * Structure defined by POSIX.4 to be like a timeval.
76: */
77: struct timespec {
78: time_t tv_sec; /* seconds */
79: int32_t tv_nsec; /* and nanoseconds */
80: };
81:
82: #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
83: (ts)->tv_sec = (tv)->tv_sec; \
84: (ts)->tv_nsec = (tv)->tv_usec * 1000; \
85: }
86: #define TIMESPEC_TO_TIMEVAL(tv, ts) { \
87: (tv)->tv_sec = (ts)->tv_sec; \
88: (tv)->tv_usec = (ts)->tv_nsec / 1000; \
89: }
90:
91: struct timezone {
92: int tz_minuteswest; /* minutes west of Greenwich */
93: int tz_dsttime; /* type of dst correction */
94: };
95: #define DST_NONE 0 /* not on dst */
96: #define DST_USA 1 /* USA style dst */
97: #define DST_AUST 2 /* Australian style dst */
98: #define DST_WET 3 /* Western European dst */
99: #define DST_MET 4 /* Middle European dst */
100: #define DST_EET 5 /* Eastern European dst */
101: #define DST_CAN 6 /* Canada */
102:
103: #define time_second time.tv_sec
104:
105: /* Operations on timevals. */
106: #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
107: #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
108: #define timercmp(tvp, uvp, cmp) \
109: (((tvp)->tv_sec == (uvp)->tv_sec) ? \
110: ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
111: ((tvp)->tv_sec cmp (uvp)->tv_sec))
112: #define timeradd(tvp, uvp, vvp) \
113: do { \
114: (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
115: (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
116: if ((vvp)->tv_usec >= 1000000) { \
117: (vvp)->tv_sec++; \
118: (vvp)->tv_usec -= 1000000; \
119: } \
120: } while (0)
121: #define timersub(tvp, uvp, vvp) \
122: do { \
123: (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
124: (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
125: if ((vvp)->tv_usec < 0) { \
126: (vvp)->tv_sec--; \
127: (vvp)->tv_usec += 1000000; \
128: } \
129: } while (0)
130:
131: /*
132: * Names of the interval timers, and structure
133: * defining a timer setting.
134: */
135: #define ITIMER_REAL 0
136: #define ITIMER_VIRTUAL 1
137: #define ITIMER_PROF 2
138:
139: struct itimerval {
140: struct timeval it_interval; /* timer interval */
141: struct timeval it_value; /* current value */
142: };
143:
144: /*
145: * Getkerninfo clock information structure
146: */
147: struct clockinfo {
148: int hz; /* clock frequency */
149: int tick; /* micro-seconds per hz tick */
150: int tickadj; /* clock skew rate for adjtime() */
151: int stathz; /* statistics clock frequency */
152: int profhz; /* profiling clock frequency */
153: };
154:
155: #include <sys/cdefs.h>
156:
157: #ifdef KERNEL
158: int itimerfix __P((struct timeval *tv));
159: int itimerdecr __P((struct itimerval *itp, int usec));
160: void microtime __P((struct timeval *tv));
161: #else /* !KERNEL */
162: #include <time.h>
163:
164: #ifndef _POSIX_SOURCE
165: #include <sys/cdefs.h>
166:
167: __BEGIN_DECLS
168: int adjtime __P((const struct timeval *, struct timeval *));
169: int getitimer __P((int, struct itimerval *));
170: int gettimeofday __P((struct timeval *, struct timezone *));
171: int setitimer __P((int, const struct itimerval *, struct itimerval *));
172: int settimeofday __P((const struct timeval *, const struct timezone *));
173: int utimes __P((const char *, const struct timeval *));
174: __END_DECLS
175: #endif /* !POSIX */
176:
177: #endif /* !KERNEL */
178:
179: #endif /* !_SYS_TIME_H_ */
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