root / prex-0.9.0 / include / sys / time.h @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*
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2 | * Copyright (c) 1982, 1986, 1993
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3 | * The Regents of the University of California. All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the University nor the names of its contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | *
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29 | * @(#)time.h 8.5 (Berkeley) 5/4/95
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30 | */
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31 | |||
32 | #ifndef _SYS_TIME_H_
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33 | #define _SYS_TIME_H_
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34 | |||
35 | #include <sys/types.h> |
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36 | |||
37 | /*
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38 | * Structure returned by gettimeofday(2) system call,
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39 | * and used in other calls.
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40 | */
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41 | struct timeval {
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42 | long tv_sec; /* seconds */ |
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43 | long tv_usec; /* and microseconds */ |
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44 | }; |
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45 | |||
46 | /*
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47 | * Structure defined by POSIX.4 to be like a timeval.
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48 | */
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49 | struct timespec {
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50 | time_t ts_sec; /* seconds */
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51 | long ts_nsec; /* and nanoseconds */ |
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52 | }; |
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53 | |||
54 | #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
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55 | (ts)->ts_sec = (tv)->tv_sec; \ |
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56 | (ts)->ts_nsec = (tv)->tv_usec * 1000; \
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57 | } |
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58 | #define TIMESPEC_TO_TIMEVAL(tv, ts) { \
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59 | (tv)->tv_sec = (ts)->ts_sec; \ |
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60 | (tv)->tv_usec = (ts)->ts_nsec / 1000; \
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61 | } |
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62 | |||
63 | struct timezone {
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64 | int tz_minuteswest; /* minutes west of Greenwich */ |
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65 | int tz_dsttime; /* type of dst correction */ |
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66 | }; |
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67 | |||
68 | #define DST_NONE 0 /* not on dst */ |
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69 | #define DST_USA 1 /* USA style dst */ |
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70 | #define DST_AUST 2 /* Australian style dst */ |
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71 | #define DST_WET 3 /* Western European dst */ |
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72 | #define DST_MET 4 /* Middle European dst */ |
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73 | #define DST_EET 5 /* Eastern European dst */ |
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74 | #define DST_CAN 6 /* Canada */ |
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75 | |||
76 | /* Operations on timevals. */
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77 | #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 |
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78 | #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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79 | #define timercmp(tvp, uvp, cmp) \
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80 | (((tvp)->tv_sec == (uvp)->tv_sec) ? \ |
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81 | ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ |
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82 | ((tvp)->tv_sec cmp (uvp)->tv_sec)) |
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83 | |||
84 | /*
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85 | * Names of the interval timers, and structure
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86 | * defining a timer setting.
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87 | */
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88 | #define ITIMER_REAL 0 |
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89 | #define ITIMER_VIRTUAL 1 |
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90 | #define ITIMER_PROF 2 |
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91 | |||
92 | struct itimerval {
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93 | struct timeval it_interval; /* timer interval */ |
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94 | struct timeval it_value; /* current value */ |
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95 | }; |
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96 | |||
97 | /*
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98 | * Getkerninfo clock information structure
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99 | */
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100 | struct clockinfo {
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101 | int hz; /* clock frequency */ |
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102 | int tick; /* micro-seconds per hz tick */ |
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103 | int stathz; /* statistics clock frequency */ |
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104 | int profhz; /* profiling clock frequency */ |
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105 | }; |
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106 | |||
107 | #ifndef KERNEL
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108 | #include <time.h> |
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109 | |||
110 | #ifndef _POSIX_SOURCE
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111 | #include <sys/cdefs.h> |
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112 | |||
113 | __BEGIN_DECLS |
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114 | int gettimeofday(struct timeval *, struct timezone *); |
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115 | #if 0
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116 | int adjtime(const struct timeval *, struct timeval *);
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117 | int getitimer(int, struct itimerval *);
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118 | int setitimer(int, const struct itimerval *, struct itimerval *);
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119 | int settimeofday(const struct timeval *, const struct timezone *);
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120 | int utimes(const char *, const struct timeval *);
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121 | #endif
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122 | __END_DECLS |
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123 | #endif /* !POSIX */ |
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124 | #endif /* !KERNEL */ |
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125 | |||
126 | |||
127 | #endif /* !_SYS_TIME_H_ */ |