event.h

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#ifndef __SOLAR_CAPTURE_EVENT_H__
#define __SOLAR_CAPTURE_EVENT_H__

#include <sys/epoll.h>

struct sc_attr;
struct sc_thread;
struct sc_callback;

typedef void (sc_callback_handler_fn)(struct sc_callback*, void* event_info);


struct sc_callback {
  void*                    cb_private;  
  sc_callback_handler_fn*  cb_handler_fn; 
  struct sc_dlist          cb_link; 
};


extern int sc_callback_alloc(struct sc_callback** cb_out,
                             const struct sc_attr* attr,
                             struct sc_thread* thread);


extern void sc_callback_free(struct sc_callback* cb);


static inline int sc_callback_is_active(const struct sc_callback* cb)
{
  return cb->cb_link.next != &cb->cb_link;
}


static inline void sc_callback_remove(struct sc_callback* cb)
{
  sc_dlist_remove(&cb->cb_link);
  sc_dlist_init(&cb->cb_link);
}


extern void sc_callback_on_idle(struct sc_callback* cb);


extern int sc_epoll_ctl(struct sc_thread* thread, int op, int fd,
                        unsigned events, struct sc_callback* cb);


#endif  /* __SOLAR_CAPTURE_EVENT_H__ */