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Annotation of 42BSD/sys/h/time.h, revision 1.1

1.1     ! root        1: /*     time.h  6.1     83/07/29        */
        !             2: 
        !             3: /*
        !             4:  * Structure returned by gettimeofday(2) system call,
        !             5:  * and used in other calls.
        !             6:  */
        !             7: struct timeval {
        !             8:        long    tv_sec;         /* seconds */
        !             9:        long    tv_usec;        /* and microseconds */
        !            10: };
        !            11: 
        !            12: struct timezone {
        !            13:        int     tz_minuteswest; /* minutes west of Greenwich */
        !            14:        int     tz_dsttime;     /* type of dst correction */
        !            15: };
        !            16: #define        DST_NONE        0       /* not on dst */
        !            17: #define        DST_USA         1       /* USA style dst */
        !            18: #define        DST_AUST        2       /* Australian style dst */
        !            19: #define        DST_WET         3       /* Western European dst */
        !            20: #define        DST_MET         4       /* Middle European dst */
        !            21: #define        DST_EET         5       /* Eastern European dst */
        !            22: 
        !            23: /*
        !            24:  * Operations on timevals.
        !            25:  *
        !            26:  * NB: timercmp does not work for >= or <=.
        !            27:  */
        !            28: #define        timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
        !            29: #define        timercmp(tvp, uvp, cmp) \
        !            30:        ((tvp)->tv_sec cmp (uvp)->tv_sec || \
        !            31:         (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
        !            32: #define        timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0
        !            33: 
        !            34: /*
        !            35:  * Names of the interval timers, and structure
        !            36:  * defining a timer setting.
        !            37:  */
        !            38: #define        ITIMER_REAL     0
        !            39: #define        ITIMER_VIRTUAL  1
        !            40: #define        ITIMER_PROF     2
        !            41: 
        !            42: struct itimerval {
        !            43:        struct  timeval it_interval;    /* timer interval */
        !            44:        struct  timeval it_value;       /* current value */
        !            45: };
        !            46: 
        !            47: /*
        !            48:  * Structure returned by gmtime and localtime calls (see ctime(3)).
        !            49:  */
        !            50: struct tm {
        !            51:        int     tm_sec;
        !            52:        int     tm_min;
        !            53:        int     tm_hour;
        !            54:        int     tm_mday;
        !            55:        int     tm_mon;
        !            56:        int     tm_year;
        !            57:        int     tm_wday;
        !            58:        int     tm_yday;
        !            59:        int     tm_isdst;
        !            60: };
        !            61: 
        !            62: #ifndef KERNEL
        !            63: extern struct tm *gmtime(), *localtime();
        !            64: extern char *asctime(), *ctime();
        !            65: #endif

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