LXR linux/kernel/time/posix-timers.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#define TIMER_RETRY 1
   3
   4struct k_clock {
   5        int     (*clock_getres)(const clockid_t which_clock,
   6                                struct timespec64 *tp);
   7        int     (*clock_set)(const clockid_t which_clock,
   8                             const struct timespec64 *tp);
   9        /* Returns the clock value in the current time namespace. */
  10        int     (*clock_get_timespec)(const clockid_t which_clock,
  11                                      struct timespec64 *tp);
  12        /* Returns the clock value in the root time namespace. */
  13        ktime_t (*clock_get_ktime)(const clockid_t which_clock);
  14        int     (*clock_adj)(const clockid_t which_clock, struct __kernel_timex *tx);
  15        int     (*timer_create)(struct k_itimer *timer);
  16        int     (*nsleep)(const clockid_t which_clock, int flags,
  17                          const struct timespec64 *);
  18        int     (*timer_set)(struct k_itimer *timr, int flags,
  19                             struct itimerspec64 *new_setting,
  20                             struct itimerspec64 *old_setting);
  21        int     (*timer_del)(struct k_itimer *timr);
  22        void    (*timer_get)(struct k_itimer *timr,
  23                             struct itimerspec64 *cur_setting);
  24        void    (*timer_rearm)(struct k_itimer *timr);
  25        s64     (*timer_forward)(struct k_itimer *timr, ktime_t now);
  26        ktime_t (*timer_remaining)(struct k_itimer *timr, ktime_t now);
  27        int     (*timer_try_to_cancel)(struct k_itimer *timr);
  28        void    (*timer_arm)(struct k_itimer *timr, ktime_t expires,
  29                             bool absolute, bool sigev_none);
  30        void    (*timer_wait_running)(struct k_itimer *timr);
  31};
  32
  33extern const struct k_clock clock_posix_cpu;
  34extern const struct k_clock clock_posix_dynamic;
  35extern const struct k_clock clock_process;
  36extern const struct k_clock clock_thread;
  37extern const struct k_clock alarm_clock;
  38
  39int posix_timer_event(struct k_itimer *timr, int si_private);
  40
  41void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting);
  42int common_timer_set(struct k_itimer *timr, int flags,
  43                     struct itimerspec64 *new_setting,
  44                     struct itimerspec64 *old_setting);
  45int common_timer_del(struct k_itimer *timer);
  46