include/linux/posix-timers.h

   1 #ifndef _linux_POSIX_TIMERS_H
   2 #define _linux_POSIX_TIMERS_H
   3
   4 struct k_clock {
   5         int res;                /* in nano seconds */
   6         int (*clock_set) (struct timespec * tp);
   7         int (*clock_get) (struct timespec * tp);
   8         int (*nsleep) (int flags,
   9                        struct timespec * new_setting,
  10                        struct itimerspec * old_setting);
  11         int (*timer_set) (struct k_itimer * timr, int flags,
  12                           struct itimerspec * new_setting,
  13                           struct itimerspec * old_setting);
  14         int (*timer_del) (struct k_itimer * timr);
  15         void (*timer_get) (struct k_itimer * timr,
  16                            struct itimerspec * cur_setting);
  17 };
  18 struct now_struct {
  19         unsigned long jiffies;
  20 };
  21
  22 #define posix_get_now(now) (now)->jiffies = jiffies;
  23 #define posix_time_before(timer, now) \
  24                       time_before((timer)->expires, (now)->jiffies)
  25
  26 #define posix_bump_timer(timr) do { \
  27                         (timr)->it_timer.expires += (timr)->it_incr; \
  28                         (timr)->it_overrun++;               \
  29                        }while (0)
  30 #endif