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Annotation of prex-old/include/sys/time.h, Revision 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: #define        DST_NONE        0       /* not on dst */
        !            68: #define        DST_USA         1       /* USA style dst */
        !            69: #define        DST_AUST        2       /* Australian style dst */
        !            70: #define        DST_WET         3       /* Western European dst */
        !            71: #define        DST_MET         4       /* Middle European dst */
        !            72: #define        DST_EET         5       /* Eastern European dst */
        !            73: #define        DST_CAN         6       /* Canada */
        !            74:
        !            75: /* Operations on timevals. */
        !            76: #define        timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0
        !            77: #define        timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
        !            78: #define        timercmp(tvp, uvp, cmp)                                         \
        !            79:        (((tvp)->tv_sec == (uvp)->tv_sec) ?                             \
        !            80:            ((tvp)->tv_usec cmp (uvp)->tv_usec) :                       \
        !            81:            ((tvp)->tv_sec cmp (uvp)->tv_sec))
        !            82:
        !            83: /*
        !            84:  * Names of the interval timers, and structure
        !            85:  * defining a timer setting.
        !            86:  */
        !            87: #define        ITIMER_REAL     0
        !            88: #define        ITIMER_VIRTUAL  1
        !            89: #define        ITIMER_PROF     2
        !            90:
        !            91: struct itimerval {
        !            92:        struct  timeval it_interval;    /* timer interval */
        !            93:        struct  timeval it_value;       /* current value */
        !            94: };
        !            95:
        !            96: /*
        !            97:  * Getkerninfo clock information structure
        !            98:  */
        !            99: struct clockinfo {
        !           100:        int     hz;             /* clock frequency */
        !           101:        int     tick;           /* micro-seconds per hz tick */
        !           102:        int     stathz;         /* statistics clock frequency */
        !           103:        int     profhz;         /* profiling clock frequency */
        !           104: };
        !           105:
        !           106: #ifndef KERNEL
        !           107: #include <time.h>
        !           108:
        !           109: #ifndef _POSIX_SOURCE
        !           110: #include <sys/cdefs.h>
        !           111:
        !           112: __BEGIN_DECLS
        !           113: int    adjtime(const struct timeval *, struct timeval *);
        !           114: int    getitimer(int, struct itimerval *);
        !           115: int    gettimeofday(struct timeval *, struct timezone *);
        !           116: int    setitimer(int, const struct itimerval *, struct itimerval *);
        !           117: int    settimeofday(const struct timeval *, const struct timezone *);
        !           118: int    utimes(const char *, const struct timeval *);
        !           119: __END_DECLS
        !           120: #endif /* !POSIX */
        !           121: #endif /* !KERNEL */
        !           122:
        !           123:
        !           124: #endif /* !_SYS_TIME_H_ */