include/native/event.h

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#ifndef _XENO_EVENT_H
#define _XENO_EVENT_H

#include <nucleus/synch.h>
#include <native/types.h>

/* Creation flags. */
#define EV_PRIO  XNSYNCH_PRIO   /* Pend by task priority order. */
#define EV_FIFO  XNSYNCH_FIFO   /* Pend by FIFO order. */

/* Operation flags. */
#define EV_ANY  0x1     /* Disjunctive wait. */
#define EV_ALL  0x0     /* Conjunctive wait. */

typedef struct rt_event_info {

    unsigned long value; /* !< Current event group value. */

    int nwaiters;       /* !< Number of pending tasks. */

    char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */

} RT_EVENT_INFO;

typedef struct rt_event_placeholder {
    xnhandle_t opaque;
} RT_EVENT_PLACEHOLDER;

#if (defined(__KERNEL__) || defined(__XENO_SIM__)) && !defined(DOXYGEN_CPP)

#include <native/ppd.h>

#define XENO_EVENT_MAGIC 0x55550404

typedef struct rt_event {

    unsigned magic;   /* !< Magic code - must be first */

    xnsynch_t synch_base; /* !< Base synchronization object. */

    unsigned long value; /* !< Event group value. */

    xnhandle_t handle;  /* !< Handle in registry -- zero if unregistered. */

    char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */

#ifdef CONFIG_XENO_OPT_PERVASIVE
    pid_t cpid;                 /* !< Creator's pid. */
#endif /* CONFIG_XENO_OPT_PERVASIVE */

    xnholder_t rlink;           /* !< Link in resource queue. */

#define rlink2event(ln) container_of(ln, RT_EVENT, rlink)

    xnqueue_t *rqueue;          /* !< Backpointer to resource queue. */

} RT_EVENT;

#ifdef __cplusplus
extern "C" {
#endif

#ifdef CONFIG_XENO_OPT_NATIVE_EVENT

int __native_event_pkg_init(void);

void __native_event_pkg_cleanup(void);

static inline void __native_event_flush_rq(xnqueue_t *rq)
{
        xeno_flush_rq(RT_EVENT, rq, event);
}

#else /* !CONFIG_XENO_OPT_NATIVE_EVENT */

#define __native_event_pkg_init()               ({ 0; })
#define __native_event_pkg_cleanup()            do { } while(0)
#define __native_event_flush_rq(rq)             do { } while(0)

#endif /* !CONFIG_XENO_OPT_NATIVE_EVENT */

#ifdef __cplusplus
}
#endif

#else /* !(__KERNEL__ || __XENO_SIM__) */

typedef RT_EVENT_PLACEHOLDER RT_EVENT;

#ifdef __cplusplus
extern "C" {
#endif

int rt_event_bind(RT_EVENT *event,
                  const char *name,
                  RTIME timeout);

static inline int rt_event_unbind (RT_EVENT *event)

{
    event->opaque = XN_NO_HANDLE;
    return 0;
}

#ifdef __cplusplus
}
#endif

#endif /* __KERNEL__ || __XENO_SIM__ */

#ifdef __cplusplus
extern "C" {
#endif

/* Public interface. */

int rt_event_create(RT_EVENT *event,
                    const char *name,
                    unsigned long ivalue,
                    int mode);

int rt_event_delete(RT_EVENT *event);

int rt_event_signal(RT_EVENT *event,
                    unsigned long mask);

int rt_event_wait(RT_EVENT *event,
                  unsigned long mask,
                  unsigned long *mask_r,
                  int mode,
                  RTIME timeout);

int rt_event_clear(RT_EVENT *event,
                   unsigned long mask,
                   unsigned long *mask_r);

int rt_event_inquire(RT_EVENT *event,
                     RT_EVENT_INFO *info);

#ifdef __cplusplus
}
#endif

#endif /* !_XENO_EVENT_H */

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