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00020 #ifndef _RTAI_NUCLEUS_TIMER_H
00021 #define _RTAI_NUCLEUS_TIMER_H
00022
00023 #include <nucleus/queue.h>
00024
00025 #if defined(__KERNEL__) || defined(__RTAI_UVM__) || defined(__RTAI_SIM__)
00026
00027
00028 #define XNTIMER_WHEELSIZE 64
00029 #define XNTIMER_WHEELMASK (XNTIMER_WHEELSIZE - 1)
00030
00031 #define XNTIMER_ENABLED 0x00000001
00032 #define XNTIMER_DEQUEUED 0x00000002
00033 #define XNTIMER_KILLED 0x00000004
00034
00035
00036 #define XNTIMER_SPARE0 0x01000000
00037 #define XNTIMER_SPARE1 0x02000000
00038 #define XNTIMER_SPARE2 0x04000000
00039 #define XNTIMER_SPARE3 0x08000000
00040 #define XNTIMER_SPARE4 0x10000000
00041 #define XNTIMER_SPARE5 0x20000000
00042 #define XNTIMER_SPARE6 0x40000000
00043 #define XNTIMER_SPARE7 0x80000000
00044
00045 #define XNTIMER_LOPRIO (-999999999)
00046 #define XNTIMER_STDPRIO 0
00047 #define XNTIMER_HIPRIO 999999999
00048
00049 #define XNTIMER_KEEPER_ID 0
00050
00051 struct xnsched;
00052
00053 typedef struct xntimer {
00054
00055 xnholder_t link;
00056
00057 #define link2timer(laddr) \
00058 ((xntimer_t *)(((char *)laddr) - (int)(&((xntimer_t *)0)->link)))
00059
00060 xnflags_t status;
00061
00062 xnticks_t date;
00063
00064 xnticks_t interval;
00065
00066 int prio;
00067
00068 struct xnsched *sched;
00069
00070
00071 void (*handler)(void *cookie);
00072
00073 void *cookie;
00074
00075 XNARCH_DECL_DISPLAY_CONTEXT();
00076
00077 } xntimer_t;
00078
00079 #define xntimer_date(t) ((t)->date)
00080 #if defined(CONFIG_SMP) && defined(CONFIG_RTAI_OPT_PERCPU_TIMER)
00081 #define xntimer_sched(t) ((t)->sched)
00082 #elif defined(CONFIG_SMP)
00083 #define xntimer_sched(t) (xnpod_sched_slot(XNTIMER_KEEPER_ID))
00084 #else
00085 #define xntimer_sched(t) xnpod_current_sched()
00086 #endif
00087 #define xntimer_interval(t) ((t)->interval)
00088 #define xntimer_set_cookie(t,c) ((t)->cookie = (c))
00089 #define xntimer_set_priority(t,p) ((t)->prio = (p))
00090
00091 static inline int xntimer_active_p (xntimer_t *timer) {
00092 return !testbits(timer->status,XNTIMER_DEQUEUED);
00093 }
00094
00095 #ifdef __cplusplus
00096 extern "C" {
00097 #endif
00098
00099 void xntimer_init(xntimer_t *timer,
00100 void (*handler)(void *cookie),
00101 void *cookie);
00102
00103 void xntimer_destroy(xntimer_t *timer);
00104
00105 void xntimer_do_timers(void);
00106
00107 int xntimer_start(xntimer_t *timer,
00108 xnticks_t value,
00109 xnticks_t interval);
00110
00111 void xntimer_stop_timer_inner(xntimer_t *timer);
00112
00136 static inline void xntimer_stop(xntimer_t *timer)
00137 {
00138 if (!testbits(timer->status,XNTIMER_DEQUEUED))
00139 xntimer_stop_timer_inner(timer);
00140 }
00141
00142 void xntimer_freeze(void);
00143
00144 xnticks_t xntimer_get_date(xntimer_t *timer);
00145
00146 xnticks_t xntimer_get_timeout(xntimer_t *timer);
00147
00148 #if defined(CONFIG_SMP) && defined(CONFIG_RTAI_OPT_PERCPU_TIMER)
00149 int xntimer_set_sched(xntimer_t *timer, struct xnsched *sched);
00150 #else
00151 #define xntimer_set_sched(timer,sched)
00152 #endif
00153
00154 #ifdef __cplusplus
00155 }
00156 #endif
00157
00158 #endif
00159
00160 #endif