kernel/time/posix-timers.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #define TIMER_RETRY 1
   3
   4 struct 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         int     (*clock_get)(const clockid_t which_clock,
  10                              struct timespec64 *tp);
  11         int     (*clock_adj)(const clockid_t which_clock, struct timex *tx);
  12         int     (*timer_create)(struct k_itimer *timer);
  13         int     (*nsleep)(const clockid_t which_clock, int flags,
  14                           const struct timespec64 *);
  15         int     (*timer_set)(struct k_itimer *timr, int flags,
  16                              struct itimerspec64 *new_setting,
  17                              struct itimerspec64 *old_setting);
  18         int     (*timer_del)(struct k_itimer *timr);
  19         void    (*timer_get)(struct k_itimer *timr,
  20                              struct itimerspec64 *cur_setting);
  21         void    (*timer_rearm)(struct k_itimer *timr);
  22         int     (*timer_forward)(struct k_itimer *timr, ktime_t now);
  23         ktime_t (*timer_remaining)(struct k_itimer *timr, ktime_t now);
  24         int     (*timer_try_to_cancel)(struct k_itimer *timr);
  25         void    (*timer_arm)(struct k_itimer *timr, ktime_t expires,
  26                              bool absolute, bool sigev_none);
  27 };
  28
  29 extern const struct k_clock clock_posix_cpu;
  30 extern const struct k_clock clock_posix_dynamic;
  31 extern const struct k_clock clock_process;
  32 extern const struct k_clock clock_thread;
  33 extern const struct k_clock alarm_clock;
  34
  35 int posix_timer_event(struct k_itimer *timr, int si_private);
  36
  37 void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting);
  38 int common_timer_set(struct k_itimer *timr, int flags,
  39                      struct itimerspec64 *new_setting,
  40                      struct itimerspec64 *old_setting);
  41 int common_timer_del(struct k_itimer *timer);