X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fposix-timers.h;h=a7dd38f30ade61d1cf6fba16d7f7f60b3e8cc944;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=ec4910e37c65c5a396057bd62841c64d8ee13698;hpb=9bf4aaab3e101692164d49b7ca357651eb691cb6;p=linux-2.6.git

diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index ec4910e37..a7dd38f30 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -3,42 +3,116 @@
 
 #include <linux/spinlock.h>
 #include <linux/list.h>
+#include <linux/sched.h>
 
-struct k_clock_abs {
-	struct list_head list;
-	spinlock_t lock;
+union cpu_time_count {
+	cputime_t cpu;
+	unsigned long long sched;
 };
+
+struct cpu_timer_list {
+	struct list_head entry;
+	union cpu_time_count expires, incr;
+	struct task_struct *task;
+	int firing;
+};
+
+#define CPUCLOCK_PID(clock)		((pid_t) ~((clock) >> 3))
+#define CPUCLOCK_PERTHREAD(clock) \
+	(((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0)
+#define CPUCLOCK_PID_MASK	7
+#define CPUCLOCK_PERTHREAD_MASK	4
+#define CPUCLOCK_WHICH(clock)	((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK)
+#define CPUCLOCK_CLOCK_MASK	3
+#define CPUCLOCK_PROF		0
+#define CPUCLOCK_VIRT		1
+#define CPUCLOCK_SCHED		2
+#define CPUCLOCK_MAX		3
+
+#define MAKE_PROCESS_CPUCLOCK(pid, clock) \
+	((~(clockid_t) (pid) << 3) | (clockid_t) (clock))
+#define MAKE_THREAD_CPUCLOCK(tid, clock) \
+	MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK)
+
+/* POSIX.1b interval timer structure. */
+struct k_itimer {
+	struct list_head list;		/* free/ allocate list */
+	spinlock_t it_lock;
+	clockid_t it_clock;		/* which timer type */
+	timer_t it_id;			/* timer id */
+	int it_overrun;			/* overrun on pending signal  */
+	int it_overrun_last;		/* overrun on last delivered signal */
+	int it_requeue_pending;		/* waiting to requeue this timer */
+#define REQUEUE_PENDING 1
+	int it_sigev_notify;		/* notify word of sigevent struct */
+	int it_sigev_signo;		/* signo word of sigevent struct */
+	sigval_t it_sigev_value;	/* value word of sigevent struct */
+	struct task_struct *it_process;	/* process to send signal to */
+	struct sigqueue *sigq;		/* signal queue entry. */
+	union {
+		struct {
+			struct hrtimer timer;
+			ktime_t interval;
+		} real;
+		struct cpu_timer_list cpu;
+		struct {
+			unsigned int clock;
+			unsigned int node;
+			unsigned long incr;
+			unsigned long expires;
+		} mmtimer;
+	} it;
+};
+
 struct k_clock {
-	int res;		/* in nano seconds */
-	struct k_clock_abs *abs_struct;
-	int (*clock_set) (struct timespec * tp);
-	int (*clock_get) (struct timespec * tp);
-	int (*nsleep) (int flags,
-		       struct timespec * new_setting,
-		       struct itimerspec * old_setting);
+	int res;		/* in nanoseconds */
+	int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
+	int (*clock_set) (const clockid_t which_clock, struct timespec * tp);
+	int (*clock_get) (const clockid_t which_clock, struct timespec * tp);
+	int (*timer_create) (struct k_itimer *timer);
+	int (*nsleep) (const clockid_t which_clock, int flags,
+		       struct timespec *, struct timespec __user *);
+	long (*nsleep_restart) (struct restart_block *restart_block);
 	int (*timer_set) (struct k_itimer * timr, int flags,
 			  struct itimerspec * new_setting,
 			  struct itimerspec * old_setting);
 	int (*timer_del) (struct k_itimer * timr);
+#define TIMER_RETRY 1
 	void (*timer_get) (struct k_itimer * timr,
 			   struct itimerspec * cur_setting);
 };
-struct now_struct {
-	unsigned long jiffies;
-};
 
-#define posix_get_now(now) (now)->jiffies = jiffies;
-#define posix_time_before(timer, now) \
-                      time_before((timer)->expires, (now)->jiffies)
-
-#define posix_bump_timer(timr, now)					\
-         do {								\
-              long delta, orun;						\
-	      delta = now.jiffies - (timr)->it_timer.expires;		\
-              if (delta >= 0) {						\
-	           orun = 1 + (delta / (timr)->it_incr);		\
-	          (timr)->it_timer.expires += orun * (timr)->it_incr;	\
-                  (timr)->it_overrun += orun;				\
-              }								\
-            }while (0)
+void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);
+
+/* error handlers for timer_create, nanosleep and settime */
+int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *,
+			       struct timespec __user *);
+int do_posix_clock_nosettime(const clockid_t, struct timespec *tp);
+
+/* function to call to trigger timer event */
+int posix_timer_event(struct k_itimer *timr, int si_private);
+
+int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts);
+int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts);
+int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts);
+int posix_cpu_timer_create(struct k_itimer *timer);
+int posix_cpu_nsleep(const clockid_t which_clock, int flags,
+		     struct timespec *rqtp, struct timespec __user *rmtp);
+long posix_cpu_nsleep_restart(struct restart_block *restart_block);
+int posix_cpu_timer_set(struct k_itimer *timer, int flags,
+			struct itimerspec *new, struct itimerspec *old);
+int posix_cpu_timer_del(struct k_itimer *timer);
+void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp);
+
+void posix_cpu_timer_schedule(struct k_itimer *timer);
+
+void run_posix_cpu_timers(struct task_struct *task);
+void posix_cpu_timers_exit(struct task_struct *task);
+void posix_cpu_timers_exit_group(struct task_struct *task);
+
+void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
+			   cputime_t *newval, cputime_t *oldval);
+
+long clock_nanosleep_restart(struct restart_block *restart_block);
+
 #endif