From 3d3d5235aaaa48fc6aeb5d81e2a21cdab54f804f Mon Sep 17 00:00:00 2001 From: Tobias Brunner Date: Wed, 20 May 2020 17:34:39 +0200 Subject: [PATCH] object: Add helper for callbacks with two void pointers --- src/libstrongswan/utils/utils/object.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/libstrongswan/utils/utils/object.h b/src/libstrongswan/utils/utils/object.h index 24169dafcd..174ea812a1 100644 --- a/src/libstrongswan/utils/utils/object.h +++ b/src/libstrongswan/utils/utils/object.h @@ -123,4 +123,15 @@ static typeof(_cb_##name) *name = (typeof(_cb_##name)*)_cb_##name; \ static ret _cb_##name(param1, ##__VA_ARGS__) +/** + * Same as CALLBACK(), but for two void* arguments (e.g. for comparisons). + */ +#define CALLBACK2(name, ret, param1, param2, ...) \ + static ret _cb_##name(union {void *_generic; param1;} \ + __attribute__((transparent_union)), \ + union {void *_generic; param2;} \ + __attribute__((transparent_union)), ##__VA_ARGS__); \ + static typeof(_cb_##name) *name = (typeof(_cb_##name)*)_cb_##name; \ + static ret _cb_##name(param1, param2, ##__VA_ARGS__) + #endif /** OBJECT_H_ @} */ -- 2.47.2