1 #ifndef _linux_POSIX_TIMERS_H
2 #define _linux_POSIX_TIMERS_H
4 #include <linux/spinlock.h>
5 #include <linux/list.h>
6 #include <linux/sched.h>
10 unsigned long long sched;
13 struct cpu_timer_list {
14 struct list_head entry;
15 union cpu_time_count expires, incr;
16 struct task_struct *task;
20 #define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3))
21 #define CPUCLOCK_PERTHREAD(clock) \
22 (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0)
23 #define CPUCLOCK_PID_MASK 7
24 #define CPUCLOCK_PERTHREAD_MASK 4
25 #define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK)
26 #define CPUCLOCK_CLOCK_MASK 3
27 #define CPUCLOCK_PROF 0
28 #define CPUCLOCK_VIRT 1
29 #define CPUCLOCK_SCHED 2
30 #define CPUCLOCK_MAX 3
32 #define MAKE_PROCESS_CPUCLOCK(pid, clock) \
33 ((~(clockid_t) (pid) << 3) | (clockid_t) (clock))
34 #define MAKE_THREAD_CPUCLOCK(tid, clock) \
35 MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK)
37 /* POSIX.1b interval timer structure. */
39 struct list_head list; /* free/ allocate list */
41 clockid_t it_clock; /* which timer type */
42 timer_t it_id; /* timer id */
43 int it_overrun; /* overrun on pending signal */
44 int it_overrun_last; /* overrun on last delivered signal */
45 int it_requeue_pending; /* waiting to requeue this timer */
46 #define REQUEUE_PENDING 1
47 int it_sigev_notify; /* notify word of sigevent struct */
48 int it_sigev_signo; /* signo word of sigevent struct */
49 sigval_t it_sigev_value; /* value word of sigevent struct */
50 struct task_struct *it_process; /* process to send signal to */
51 struct sigqueue *sigq; /* signal queue entry. */
57 struct cpu_timer_list cpu;
62 unsigned long expires;
68 int res; /* in nanoseconds */
69 int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
70 int (*clock_set) (const clockid_t which_clock, struct timespec * tp);
71 int (*clock_get) (const clockid_t which_clock, struct timespec * tp);
72 int (*timer_create) (struct k_itimer *timer);
73 int (*nsleep) (const clockid_t which_clock, int flags,
74 struct timespec *, struct timespec __user *);
75 int (*timer_set) (struct k_itimer * timr, int flags,
76 struct itimerspec * new_setting,
77 struct itimerspec * old_setting);
78 int (*timer_del) (struct k_itimer * timr);
80 void (*timer_get) (struct k_itimer * timr,
81 struct itimerspec * cur_setting);
84 void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);
86 /* error handlers for timer_create, nanosleep and settime */
87 int do_posix_clock_notimer_create(struct k_itimer *timer);
88 int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *,
89 struct timespec __user *);
90 int do_posix_clock_nosettime(const clockid_t, struct timespec *tp);
92 /* function to call to trigger timer event */
93 int posix_timer_event(struct k_itimer *timr, int si_private);
95 int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts);
96 int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts);
97 int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts);
98 int posix_cpu_timer_create(struct k_itimer *timer);
99 int posix_cpu_nsleep(const clockid_t which_clock, int flags,
100 struct timespec *rqtp, struct timespec __user *rmtp);
101 int posix_cpu_timer_set(struct k_itimer *timer, int flags,
102 struct itimerspec *new, struct itimerspec *old);
103 int posix_cpu_timer_del(struct k_itimer *timer);
104 void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp);
106 void posix_cpu_timer_schedule(struct k_itimer *timer);
108 void run_posix_cpu_timers(struct task_struct *task);
109 void posix_cpu_timers_exit(struct task_struct *task);
110 void posix_cpu_timers_exit_group(struct task_struct *task);
112 void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
113 cputime_t *newval, cputime_t *oldval);