Annotation of prex/include/sys/time.h, Revision 1.1.1.1
1.1 nbrk 1: /*
2: * Copyright (c) 1982, 1986, 1993
3: * The Regents of the University of California. All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the University nor the names of its contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: *
29: * @(#)time.h 8.5 (Berkeley) 5/4/95
30: */
31:
32: #ifndef _SYS_TIME_H_
33: #define _SYS_TIME_H_
34:
35: #include <sys/types.h>
36:
37: /*
38: * Structure returned by gettimeofday(2) system call,
39: * and used in other calls.
40: */
41: struct timeval {
42: long tv_sec; /* seconds */
43: long tv_usec; /* and microseconds */
44: };
45:
46: /*
47: * Structure defined by POSIX.4 to be like a timeval.
48: */
49: struct timespec {
50: time_t ts_sec; /* seconds */
51: long ts_nsec; /* and nanoseconds */
52: };
53:
54: #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
55: (ts)->ts_sec = (tv)->tv_sec; \
56: (ts)->ts_nsec = (tv)->tv_usec * 1000; \
57: }
58: #define TIMESPEC_TO_TIMEVAL(tv, ts) { \
59: (tv)->tv_sec = (ts)->ts_sec; \
60: (tv)->tv_usec = (ts)->ts_nsec / 1000; \
61: }
62:
63: struct timezone {
64: int tz_minuteswest; /* minutes west of Greenwich */
65: int tz_dsttime; /* type of dst correction */
66: };
67:
68: #define DST_NONE 0 /* not on dst */
69: #define DST_USA 1 /* USA style dst */
70: #define DST_AUST 2 /* Australian style dst */
71: #define DST_WET 3 /* Western European dst */
72: #define DST_MET 4 /* Middle European dst */
73: #define DST_EET 5 /* Eastern European dst */
74: #define DST_CAN 6 /* Canada */
75:
76: /* Operations on timevals. */
77: #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
78: #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
79: #define timercmp(tvp, uvp, cmp) \
80: (((tvp)->tv_sec == (uvp)->tv_sec) ? \
81: ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
82: ((tvp)->tv_sec cmp (uvp)->tv_sec))
83:
84: /*
85: * Names of the interval timers, and structure
86: * defining a timer setting.
87: */
88: #define ITIMER_REAL 0
89: #define ITIMER_VIRTUAL 1
90: #define ITIMER_PROF 2
91:
92: struct itimerval {
93: struct timeval it_interval; /* timer interval */
94: struct timeval it_value; /* current value */
95: };
96:
97: /*
98: * Getkerninfo clock information structure
99: */
100: struct clockinfo {
101: int hz; /* clock frequency */
102: int tick; /* micro-seconds per hz tick */
103: int stathz; /* statistics clock frequency */
104: int profhz; /* profiling clock frequency */
105: };
106:
107: #ifndef KERNEL
108: #include <time.h>
109:
110: #ifndef _POSIX_SOURCE
111: #include <sys/cdefs.h>
112:
113: __BEGIN_DECLS
114: int adjtime(const struct timeval *, struct timeval *);
115: int getitimer(int, struct itimerval *);
116: int gettimeofday(struct timeval *, struct timezone *);
117: int setitimer(int, const struct itimerval *, struct itimerval *);
118: int settimeofday(const struct timeval *, const struct timezone *);
119: int utimes(const char *, const struct timeval *);
120: __END_DECLS
121: #endif /* !POSIX */
122: #endif /* !KERNEL */
123:
124:
125: #endif /* !_SYS_TIME_H_ */
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