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Annotation of 43BSDTahoe/sys/h/time.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  *
                      6:  *     @(#)time.h      7.1 (Berkeley) 6/4/86
                      7:  */
                      8: 
                      9: /*
                     10:  * Structure returned by gettimeofday(2) system call,
                     11:  * and used in other calls.
                     12:  */
                     13: struct timeval {
                     14:        long    tv_sec;         /* seconds */
                     15:        long    tv_usec;        /* and microseconds */
                     16: };
                     17: 
                     18: struct timezone {
                     19:        int     tz_minuteswest; /* minutes west of Greenwich */
                     20:        int     tz_dsttime;     /* type of dst correction */
                     21: };
                     22: #define        DST_NONE        0       /* not on dst */
                     23: #define        DST_USA         1       /* USA style dst */
                     24: #define        DST_AUST        2       /* Australian style dst */
                     25: #define        DST_WET         3       /* Western European dst */
                     26: #define        DST_MET         4       /* Middle European dst */
                     27: #define        DST_EET         5       /* Eastern European dst */
                     28: #define        DST_CAN         6       /* Canada */
                     29: 
                     30: /*
                     31:  * Operations on timevals.
                     32:  *
                     33:  * NB: timercmp does not work for >= or <=.
                     34:  */
                     35: #define        timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
                     36: #define        timercmp(tvp, uvp, cmp) \
                     37:        ((tvp)->tv_sec cmp (uvp)->tv_sec || \
                     38:         (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
                     39: #define        timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0
                     40: 
                     41: /*
                     42:  * Names of the interval timers, and structure
                     43:  * defining a timer setting.
                     44:  */
                     45: #define        ITIMER_REAL     0
                     46: #define        ITIMER_VIRTUAL  1
                     47: #define        ITIMER_PROF     2
                     48: 
                     49: struct itimerval {
                     50:        struct  timeval it_interval;    /* timer interval */
                     51:        struct  timeval it_value;       /* current value */
                     52: };
                     53: 
                     54: #ifndef KERNEL
                     55: #include <time.h>
                     56: #endif

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