include/native/event.h

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00001 
00022 #ifndef _XENO_EVENT_H
00023 #define _XENO_EVENT_H
00024 
00025 #include <nucleus/synch.h>
00026 #include <native/types.h>
00027 
00028 /* Creation flags. */
00029 #define EV_PRIO  XNSYNCH_PRIO   /* Pend by task priority order. */
00030 #define EV_FIFO  XNSYNCH_FIFO   /* Pend by FIFO order. */
00031 
00032 /* Operation flags. */
00033 #define EV_ANY  0x1     /* Disjunctive wait. */
00034 #define EV_ALL  0x0     /* Conjunctive wait. */
00035 
00036 typedef struct rt_event_info {
00037 
00038     unsigned long value; /* !< Current event group value. */
00039 
00040     int nwaiters;       /* !< Number of pending tasks. */
00041 
00042     char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */
00043 
00044 } RT_EVENT_INFO;
00045 
00046 typedef struct rt_event_placeholder {
00047     xnhandle_t opaque;
00048 } RT_EVENT_PLACEHOLDER;
00049 
00050 #if (defined(__KERNEL__) || defined(__XENO_SIM__)) && !defined(DOXYGEN_CPP)
00051 
00052 #include <native/ppd.h>
00053 
00054 #define XENO_EVENT_MAGIC 0x55550404
00055 
00056 typedef struct rt_event {
00057 
00058     unsigned magic;   /* !< Magic code - must be first */
00059 
00060     xnsynch_t synch_base; /* !< Base synchronization object. */
00061 
00062     unsigned long value; /* !< Event group value. */
00063 
00064     xnhandle_t handle;  /* !< Handle in registry -- zero if unregistered. */
00065 
00066     char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */
00067 
00068 #ifdef CONFIG_XENO_OPT_PERVASIVE
00069     pid_t cpid;                 /* !< Creator's pid. */
00070 #endif /* CONFIG_XENO_OPT_PERVASIVE */
00071 
00072     xnholder_t rlink;           /* !< Link in resource queue. */
00073 
00074 #define rlink2event(ln) container_of(ln, RT_EVENT, rlink)
00075 
00076     xnqueue_t *rqueue;          /* !< Backpointer to resource queue. */
00077 
00078 } RT_EVENT;
00079 
00080 #ifdef __cplusplus
00081 extern "C" {
00082 #endif
00083 
00084 #ifdef CONFIG_XENO_OPT_NATIVE_EVENT
00085 
00086 int __native_event_pkg_init(void);
00087 
00088 void __native_event_pkg_cleanup(void);
00089 
00090 static inline void __native_event_flush_rq(xnqueue_t *rq)
00091 {
00092         xeno_flush_rq(RT_EVENT, rq, event);
00093 }
00094 
00095 #else /* !CONFIG_XENO_OPT_NATIVE_EVENT */
00096 
00097 #define __native_event_pkg_init()               ({ 0; })
00098 #define __native_event_pkg_cleanup()            do { } while(0)
00099 #define __native_event_flush_rq(rq)             do { } while(0)
00100 
00101 #endif /* !CONFIG_XENO_OPT_NATIVE_EVENT */
00102 
00103 #ifdef __cplusplus
00104 }
00105 #endif
00106 
00107 #else /* !(__KERNEL__ || __XENO_SIM__) */
00108 
00109 typedef RT_EVENT_PLACEHOLDER RT_EVENT;
00110 
00111 #ifdef __cplusplus
00112 extern "C" {
00113 #endif
00114 
00115 int rt_event_bind(RT_EVENT *event,
00116                   const char *name,
00117                   RTIME timeout);
00118 
00119 static inline int rt_event_unbind (RT_EVENT *event)
00120 
00121 {
00122     event->opaque = XN_NO_HANDLE;
00123     return 0;
00124 }
00125 
00126 #ifdef __cplusplus
00127 }
00128 #endif
00129 
00130 #endif /* __KERNEL__ || __XENO_SIM__ */
00131 
00132 #ifdef __cplusplus
00133 extern "C" {
00134 #endif
00135 
00136 /* Public interface. */
00137 
00138 int rt_event_create(RT_EVENT *event,
00139                     const char *name,
00140                     unsigned long ivalue,
00141                     int mode);
00142 
00143 int rt_event_delete(RT_EVENT *event);
00144 
00145 int rt_event_signal(RT_EVENT *event,
00146                     unsigned long mask);
00147 
00148 int rt_event_wait(RT_EVENT *event,
00149                   unsigned long mask,
00150                   unsigned long *mask_r,
00151                   int mode,
00152                   RTIME timeout);
00153 
00154 int rt_event_clear(RT_EVENT *event,
00155                    unsigned long mask,
00156                    unsigned long *mask_r);
00157 
00158 int rt_event_inquire(RT_EVENT *event,
00159                      RT_EVENT_INFO *info);
00160 
00161 #ifdef __cplusplus
00162 }
00163 #endif
00164 
00165 #endif /* !_XENO_EVENT_H */

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