compiler/clib/include/sys/time.h

   1 #ifndef _SYS_TIME_H_
   2 #define _SYS_TIME_H_
   3
   4 /*
   5     Copyright © 1995-2002, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: ANSI-C header file sys/time.h
   9     Lang: english
  10 */
  11
  12 #include <sys/types.h>
  13 #include <time.h>         /* XXX Probably not allowed */
  14
  15 #include <aros/_timeval.h> /* get struct timeval */
  16
  17 /* struct itimerval is used by the interval timers getitimer()/setitimer() */
  18 struct itimerval
  19 {
  20     struct timeval      it_interval;        /* timer interval */
  21     struct timeval      it_value;           /* current value */
  22 };
  23
  24 /* Which interval timer */
  25 #define ITIMER_REAL         0       /* Decrements in real time */
  26 #define ITIMER_VIRTUAL      1       /* Decrements in task virtual time */
  27 #define ITIMER_PROF         2       /* Decrements in task virtual/system time */
  28
  29 /*
  30     This structure describes a timezone. Note that most implementations of the
  31     C library no longer use the timezone information passed to gettimeofday().
  32 */
  33 struct timezone
  34 {
  35     int  tz_minuteswest; /* Minutes west of Greenwich. */
  36     int  tz_dsttime;     /* Type of dst correction (see below). */
  37 };
  38
  39 /* Daylight saving time styles. (tz_dsttime) */
  40 #define DST_NONE    0  /* No special style. */
  41 #define DST_USA     1  /* USA style. */
  42 #define DST_AUST    2  /* Australian style. */
  43 #define DST_WET     3  /* Western European style. */
  44 #define DST_MET     4  /* Middle European style. */
  45 #define DST_EET     5  /* Eastern European style. */
  46 #define DST_CAN     6  /* Canadian style. */
  47 #define DST_GB      7  /* Great British and Irish style. */
  48 #define DST_RUM     8  /* Rumanian style. */
  49 #define DST_TUR     9  /* Turkish style. */
  50 #define DST_AUSTALT 10 /* Alternate Australian style. */
  51
  52 /* Convenience macros for working with timevals */
  53 #define timerclear(tvp)         ((tvp)->tv_sec = (tvp)->tv_usec = 0)
  54 #define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
  55 #define timercmp(tvp, uvp, cmp)                                 \
  56         (((tvp)->tv_sec == (uvp)->tv_sec) ?                             \
  57             ((tvp)->tv_usec cmp (uvp)->tv_usec) :                       \
  58             ((tvp)->tv_sec cmp (uvp)->tv_sec))
  59 #define timeradd(tvp, uvp, vvp)                                         \
  60         do {                                                            \
  61                 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;          \
  62                 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;       \
  63                 if ((vvp)->tv_usec >= 1000000) {                        \
  64                         (vvp)->tv_sec++;                                \
  65                         (vvp)->tv_usec -= 1000000;                      \
  66                 }                                                       \
  67         } while (0)
  68 #define timersub(tvp, uvp, vvp)                                         \
  69         do {                                                            \
  70                 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
  71                 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
  72                 if ((vvp)->tv_usec < 0) {                               \
  73                         (vvp)->tv_sec--;                                \
  74                         (vvp)->tv_usec += 1000000;                      \
  75                 }                                                       \
  76         } while (0)
  77
  78 __BEGIN_DECLS
  79
  80 /* clib functions */
  81 int getitimer(int which, struct itimerval *);
  82 int setitimer(int which, const struct itimerval *, struct itimerval *);
  83 int gettimeofday(struct timeval * tv, struct timezone * tz);
  84 int settimeofday(const struct timeval * tv, const struct timezone * tz);
  85 int utimes(const char *file, struct timeval tvp[2]);
  86
  87 __END_DECLS
  88
  89 /*
  90     SUSv2 says that select() is defined here. BSD however defines it in
  91     unistd.h. So does AROS, as that makes more sense.
  92 */
  93
  94 #endif /* _SYS_TIME_H_ */