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52 lines
1.3 KiB
52 lines
1.3 KiB
#include <ccan/typesafe_cb/typesafe_cb.h> |
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#include <stdlib.h> |
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/* const args in callbacks should be OK. */ |
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static void _register_callback(void (*cb)(void *arg), void *arg) |
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{ |
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} |
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#define register_callback(cb, arg) \ |
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_register_callback(typesafe_cb(void, void *, (cb), (arg)), (arg)) |
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static void _register_callback_pre(void (*cb)(int x, void *arg), void *arg) |
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{ |
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} |
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#define register_callback_pre(cb, arg) \ |
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_register_callback_pre(typesafe_cb_preargs(void, void *, (cb), (arg), int), (arg)) |
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static void _register_callback_post(void (*cb)(void *arg, int x), void *arg) |
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{ |
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} |
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#define register_callback_post(cb, arg) \ |
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_register_callback_post(typesafe_cb_postargs(void, void *, (cb), (arg), int), (arg)) |
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struct undefined; |
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static void my_callback(struct undefined *undef) |
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{ |
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} |
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static void my_callback_pre(int x, struct undefined *undef) |
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{ |
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} |
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static void my_callback_post(struct undefined *undef, int x) |
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{ |
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} |
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int main(int argc, char *argv[]) |
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{ |
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struct undefined *handle = NULL; |
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void (*cb)(struct undefined *undef) = my_callback; |
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void (*pre)(int x, struct undefined *undef) = my_callback_pre; |
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void (*post)(struct undefined *undef, int x) = my_callback_post; |
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register_callback(cb, handle); |
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register_callback_pre(pre, handle); |
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register_callback_post(post, handle); |
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return 0; |
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}
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