| 1 | #ifndef _linux_POSIX_TIMERS_H |
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| 2 | #define _linux_POSIX_TIMERS_H |
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| 3 | |
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| 4 | |
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| 5 | struct k_clock { |
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| 6 | int res; /* in nano seconds */ |
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| 7 | int (*clock_getres) (clockid_t which_clock, struct timespec *tp); |
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| 8 | struct k_clock_abs *abs_struct; |
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| 9 | int (*clock_set) (clockid_t which_clock, struct timespec * tp); |
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| 10 | int (*clock_get) (clockid_t which_clock, struct timespec * tp); |
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| 11 | int (*timer_create) (struct k_itimer *timer); |
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| 12 | int (*nsleep) (clockid_t which_clock, int flags, struct timespec *); |
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| 13 | int (*timer_set) (struct k_itimer * timr, int flags, |
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| 14 | struct itimerspec * new_setting, |
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| 15 | struct itimerspec * old_setting); |
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| 16 | int (*timer_del) (struct k_itimer * timr); |
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| 17 | #define TIMER_RETRY 1 |
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| 18 | void (*timer_get) (struct k_itimer * timr, |
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| 19 | struct itimerspec * cur_setting); |
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| 20 | }; |
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| 21 | |
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| 22 | void register_posix_clock(clockid_t clock_id, struct k_clock *new_clock); |
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| 23 | |
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| 24 | /* Error handlers for timer_create, nanosleep and settime */ |
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| 25 | int do_posix_clock_notimer_create(struct k_itimer *timer); |
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| 26 | int do_posix_clock_nonanosleep(clockid_t, int flags, struct timespec *); |
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| 27 | int do_posix_clock_nosettime(clockid_t, struct timespec *tp); |
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| 28 | |
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| 29 | /* function to call to trigger timer event */ |
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| 30 | int posix_timer_event(struct k_itimer *timr, int si_private); |
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| 31 | |
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| 32 | struct now_struct { |
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| 33 | unsigned long jiffies; |
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| 34 | }; |
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| 35 | |
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| 36 | #define posix_get_now(now) (now)->jiffies = jiffies; |
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| 37 | #define posix_time_before(timer, now) \ |
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| 38 | time_before((timer)->expires, (now)->jiffies) |
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| 39 | |
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| 40 | #define posix_bump_timer(timr, now) \ |
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| 41 | do { \ |
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| 42 | long delta, orun; \ |
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| 43 | delta = now.jiffies - (timr)->it.real.timer.expires; \ |
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| 44 | if (delta >= 0) { \ |
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| 45 | orun = 1 + (delta / (timr)->it.real.incr); \ |
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| 46 | (timr)->it.real.timer.expires += \ |
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| 47 | orun * (timr)->it.real.incr; \ |
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| 48 | (timr)->it_overrun += orun; \ |
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| 49 | } \ |
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| 50 | }while (0) |
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| 51 | |
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| 52 | int posix_cpu_clock_getres(clockid_t which_clock, struct timespec *); |
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| 53 | int posix_cpu_clock_get(clockid_t which_clock, struct timespec *); |
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| 54 | int posix_cpu_clock_set(clockid_t which_clock, const struct timespec *tp); |
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| 55 | int posix_cpu_timer_create(struct k_itimer *); |
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| 56 | int posix_cpu_nsleep(clockid_t, int, struct timespec *); |
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| 57 | int posix_cpu_timer_set(struct k_itimer *, int, |
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| 58 | struct itimerspec *, struct itimerspec *); |
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| 59 | int posix_cpu_timer_del(struct k_itimer *); |
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| 60 | void posix_cpu_timer_get(struct k_itimer *, struct itimerspec *); |
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| 61 | |
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| 62 | void posix_cpu_timer_schedule(struct k_itimer *); |
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| 63 | |
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| 64 | void run_posix_cpu_timers(struct task_struct *); |
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| 65 | void posix_cpu_timers_exit(struct task_struct *); |
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| 66 | void posix_cpu_timers_exit_group(struct task_struct *); |
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| 67 | |
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| 68 | void set_process_cpu_timer(struct task_struct *, unsigned int, |
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| 69 | cputime_t *, cputime_t *); |
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| 70 | |
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| 71 | #endif |
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