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#ifndef _linux_POSIX_TIMERS_H
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#define _linux_POSIX_TIMERS_H
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struct k_clock {
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        int res;                /* in nano seconds */
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        int (*clock_set) (struct timespec * tp);
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        int (*clock_get) (struct timespec * tp);
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        int (*nsleep) (int flags,
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                       struct timespec * new_setting,
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                       struct itimerspec * old_setting);
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        int (*timer_set) (struct k_itimer * timr, int flags,
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                          struct itimerspec * new_setting,
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                          struct itimerspec * old_setting);
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        int (*timer_del) (struct k_itimer * timr);
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        void (*timer_get) (struct k_itimer * timr,
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                           struct itimerspec * cur_setting);
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};
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struct now_struct {
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        unsigned long jiffies;
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};
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#define posix_get_now(now) (now)->jiffies = jiffies;
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#define posix_time_before(timer, now) \
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                      time_before((timer)->expires, (now)->jiffies)
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#define posix_bump_timer(timr) do { \
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                        (timr)->it_timer.expires += (timr)->it_incr; \
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                        (timr)->it_overrun++;               \
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                       }while (0)
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#endif