#if !defined(__HOOK_H__)

#define __HOOK_H__ 1

#include <stdarg.h>
#include <stdatomic.h>
#include <stddef.h>

#include "xlist.h"

#define HOOK_BEFORE_EVENT (0)
#define HOOK_AFTER_EVENT  (1)

typedef int (*hook_fn_t)(int, int, int, void*, va_list);
typedef struct {
    _Atomic hook_fn_t fn;
    void*             data;
} hook_item_t;

typedef struct {
    int      maxtypes;
    xlist_t* hooks;
} hooksys_t;

extern int  xce_hook_init(hooksys_t*, int);
extern int  xce_add_hook(hooksys_t*, int, hook_fn_t, void*);
extern int  xce_disable_hook(hooksys_t*, int, hook_fn_t);
extern int  xce_run_hooks(hooksys_t*, int, int, int, ...);
extern void xce_hook_fini(hooksys_t*);

#endif