include/sys/time.h

   1 #ifndef _SPL_TIME_H
   2 #define _SPL_TIME_H
   3
   4 /*
   5  * Structure returned by gettimeofday(2) system call,
   6  * and used in other calls.
   7  */
   8
   9 #ifdef  __cplusplus
  10 extern "C" {
  11 #endif
  12
  13 #include <linux/module.h>
  14 #include <linux/time.h>
  15 #include <sys/types.h>
  16
  17 extern unsigned long long monotonic_clock(void);
  18 typedef struct timespec timestruc_t;    /* definition per SVr4 */
  19 typedef longlong_t      hrtime_t;
  20
  21 #define TIME32_MAX      INT32_MAX
  22 #define TIME32_MIN      INT32_MIN
  23
  24 #define SEC             1
  25 #define MILLISEC        1000
  26 #define MICROSEC        1000000
  27 #define NANOSEC         1000000000
  28
  29 #define hz                                      \
  30 ({                                              \
  31         BUG_ON(HZ < 100 || HZ > MICROSEC);      \
  32         HZ;                                     \
  33 })
  34
  35 #define gethrestime(ts) getnstimeofday((ts))
  36
  37 static __inline__ hrtime_t
  38 gethrtime(void) {
  39         /* BUG_ON(cur_timer == timer_none); */
  40
  41         /* Solaris expects a long long here but monotonic_clock() returns an
  42          * unsigned long long.  Note that monotonic_clock() returns the number
  43          * of nanoseconds passed since kernel initialization.  Even for a signed
  44          * long long this will not "go negative" for ~292 years.
  45          */
  46         return monotonic_clock();
  47 }
  48
  49 static __inline__ time_t
  50 gethrestime_sec(void)
  51 {
  52         timestruc_t now;
  53
  54         gethrestime(&now);
  55         return (now.tv_sec);
  56 }
  57
  58
  59 #ifdef  __cplusplus
  60 }
  61 #endif
  62
  63 #endif  /* _SPL_TIME_H */