1 #include <ccan/typesafe_cb/typesafe_cb.h>
4 /* const args in callbacks should be OK. */
6 static void _register_callback(void (*cb
)(void *arg
), void *arg
)
10 #define register_callback(cb, arg) \
11 _register_callback(typesafe_cb(void, void *, (cb), (arg)), (arg))
13 static void _register_callback_pre(void (*cb
)(int x
, void *arg
), void *arg
)
17 #define register_callback_pre(cb, arg) \
18 _register_callback_pre(typesafe_cb_preargs(void, void *, (cb), (arg), int), (arg))
20 static void _register_callback_post(void (*cb
)(void *arg
, int x
), void *arg
)
24 #define register_callback_post(cb, arg) \
25 _register_callback_post(typesafe_cb_postargs(void, void *, (cb), (arg), int), (arg))
29 static void my_callback(struct undefined
*undef
)
33 static void my_callback_pre(int x
, struct undefined
*undef
)
37 static void my_callback_post(struct undefined
*undef
, int x
)
41 int main(int argc
, char *argv
[])
43 struct undefined
*handle
= NULL
;
44 void (*cb
)(struct undefined
*undef
) = my_callback
;
45 void (*pre
)(int x
, struct undefined
*undef
) = my_callback_pre
;
46 void (*post
)(struct undefined
*undef
, int x
) = my_callback_post
;
48 register_callback(cb
, handle
);
49 register_callback_pre(pre
, handle
);
50 register_callback_post(post
, handle
);