include/sys/time.h

   1 /*
   2 sys/time.h
   3 */
   4
   5 #ifndef _SYS__TIME_H
   6 #define _SYS__TIME_H
   7
   8 #include <ansi.h>
   9
  10 /* Open Group Base Specifications Issue 6 (not complete) */
  11 struct timeval
  12 {
  13         long /*time_t*/ tv_sec;
  14         long /*useconds_t*/ tv_usec;
  15 };
  16
  17 struct timezone {
  18         int     tz_minuteswest; /* minutes west of Greenwich */
  19         int     tz_dsttime;     /* type of dst correction */
  20 };
  21
  22 /* Operations on timevals. */
  23 #define timerclear(tp) (tp)->tv_sec = (tp)->tv_usec = 0L
  24 #define timerisset(tp) ((tp)->tv_sec || (tp)->tv_usec)
  25
  26 int gettimeofday(struct timeval *_RESTRICT tp, void *_RESTRICT tzp);
  27
  28 /* Compatibility with other Unix systems */
  29 int settimeofday(const struct timeval *tp, const void *tzp);
  30
  31 /* setitimer/getitimer interface */
  32 struct itimerval
  33 {
  34         struct timeval it_interval;
  35         struct timeval it_value;
  36 };
  37
  38 #define ITIMER_REAL 0
  39 #define ITIMER_VIRTUAL 1        /* Not implemented */
  40 #define ITIMER_PROF 2           /* Not implemented */
  41
  42 int getitimer(int which, struct itimerval *value);
  43 int setitimer(int which, const struct itimerval *_RESTRICT value,
  44                 struct itimerval *_RESTRICT ovalue);
  45
  46 #include <sys/select.h>
  47
  48 #endif /* _SYS__TIME_H */