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, (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, (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, (cb), (arg), int), (arg))
27 static void my_callback(const char *p)
31 static void my_callback_pre(int x, /*const*/ char *p)
35 static void my_callback_post(/*const*/ char *p, int x)
39 int main(int argc, char *argv[])
41 register_callback(my_callback, "hello world");
42 register_callback_pre(my_callback_pre, "hello world");
43 register_callback_post(my_callback_post, "hello world");