![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to time.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple Darwin 0.x] / kernel / bsd / sys|
Return to time.h CVS log | Up to [Apple Darwin 0.x] / kernel / bsd / sys |
1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1982, 1986, 1993
28: * The Regents of the University of California. All rights reserved.
29: *
30: * Redistribution and use in source and binary forms, with or without
31: * modification, are permitted provided that the following conditions
32: * are met:
33: * 1. Redistributions of source code must retain the above copyright
34: * notice, this list of conditions and the following disclaimer.
35: * 2. Redistributions in binary form must reproduce the above copyright
36: * notice, this list of conditions and the following disclaimer in the
37: * documentation and/or other materials provided with the distribution.
38: * 3. All advertising materials mentioning features or use of this software
39: * must display the following acknowledgement:
40: * This product includes software developed by the University of
41: * California, Berkeley and its contributors.
42: * 4. Neither the name of the University nor the names of its contributors
43: * may be used to endorse or promote products derived from this software
44: * without specific prior written permission.
45: *
46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56: * SUCH DAMAGE.
57: *
58: * @(#)time.h 8.5 (Berkeley) 5/4/95
59: */
60:
61: #ifndef _SYS_TIME_H_
62: #define _SYS_TIME_H_
63:
64: #include <sys/types.h>
65:
66: /*
67: * Structure returned by gettimeofday(2) system call,
68: * and used in other calls.
69: */
70: struct timeval {
71: int32_t tv_sec; /* seconds */
72: int32_t tv_usec; /* and microseconds */
73: };
74:
75: /*
76: * Structure defined by POSIX.4 to be like a timeval.
77: */
78: struct timespec {
79: time_t tv_sec; /* seconds */
80: int32_t tv_nsec; /* and nanoseconds */
81: };
82:
83: #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
84: (ts)->tv_sec = (tv)->tv_sec; \
85: (ts)->tv_nsec = (tv)->tv_usec * 1000; \
86: }
87: #define TIMESPEC_TO_TIMEVAL(tv, ts) { \
88: (tv)->tv_sec = (ts)->tv_sec; \
89: (tv)->tv_usec = (ts)->tv_nsec / 1000; \
90: }
91:
92: struct timezone {
93: int tz_minuteswest; /* minutes west of Greenwich */
94: int tz_dsttime; /* type of dst correction */
95: };
96: #define DST_NONE 0 /* not on dst */
97: #define DST_USA 1 /* USA style dst */
98: #define DST_AUST 2 /* Australian style dst */
99: #define DST_WET 3 /* Western European dst */
100: #define DST_MET 4 /* Middle European dst */
101: #define DST_EET 5 /* Eastern European dst */
102: #define DST_CAN 6 /* Canada */
103:
104: /* Operations on timevals. */
105: #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
106: #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
107: #define timercmp(tvp, uvp, cmp) \
108: (((tvp)->tv_sec == (uvp)->tv_sec) ? \
109: ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
110: ((tvp)->tv_sec cmp (uvp)->tv_sec))
111: #define timeradd(tvp, uvp, vvp) \
112: do { \
113: (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
114: (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
115: if ((vvp)->tv_usec >= 1000000) { \
116: (vvp)->tv_sec++; \
117: (vvp)->tv_usec -= 1000000; \
118: } \
119: } while (0)
120: #define timersub(tvp, uvp, vvp) \
121: do { \
122: (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
123: (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
124: if ((vvp)->tv_usec < 0) { \
125: (vvp)->tv_sec--; \
126: (vvp)->tv_usec += 1000000; \
127: } \
128: } while (0)
129:
130: /*
131: * Names of the interval timers, and structure
132: * defining a timer setting.
133: */
134: #define ITIMER_REAL 0
135: #define ITIMER_VIRTUAL 1
136: #define ITIMER_PROF 2
137:
138: struct itimerval {
139: struct timeval it_interval; /* timer interval */
140: struct timeval it_value; /* current value */
141: };
142:
143: /*
144: * Getkerninfo clock information structure
145: */
146: struct clockinfo {
147: int hz; /* clock frequency */
148: int tick; /* micro-seconds per hz tick */
149: int tickadj; /* clock skew rate for adjtime() */
150: int stathz; /* statistics clock frequency */
151: int profhz; /* profiling clock frequency */
152: };
153:
154: #include <sys/cdefs.h>
155:
156: #ifdef _KERNEL
157: int itimerfix __P((struct timeval *tv));
158: int itimerdecr __P((struct itimerval *itp, int usec));
159: void microtime __P((struct timeval *tv));
160: #else /* !_KERNEL */
161: #include <time.h>
162:
163: #ifndef _POSIX_SOURCE
164: #include <sys/cdefs.h>
165:
166: __BEGIN_DECLS
167: int adjtime __P((const struct timeval *, struct timeval *));
168: int getitimer __P((int, struct itimerval *));
169: int gettimeofday __P((struct timeval *, struct timezone *));
170: int setitimer __P((int, const struct itimerval *, struct itimerval *));
171: int settimeofday __P((const struct timeval *, const struct timezone *));
172: int utimes __P((const char *, const struct timeval *));
173: __END_DECLS
174: #endif /* !POSIX */
175:
176: #endif /* !_KERNEL */
177:
178: #endif /* !_SYS_TIME_H_ */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.