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00016 #ifndef APR_OPTIONAL_H
00017 #define APR_OPTIONAL_H
00018
00019 #include "apu.h"
00024 #ifdef __cplusplus
00025 extern "C" {
00026 #endif
00027
00041 #define APR_OPTIONAL_FN_TYPE(name) apr_OFN_##name##_t
00042
00049 #define APR_DECLARE_OPTIONAL_FN(ret,name,args) \
00050 typedef ret (APR_OPTIONAL_FN_TYPE(name)) args
00051
00058 typedef void (apr_opt_fn_t)(void);
00060 APU_DECLARE_NONSTD(void) apr_dynamic_fn_register(const char *szName,
00061 apr_opt_fn_t *pfn);
00062
00069 #define APR_REGISTER_OPTIONAL_FN(name) do { \
00070 APR_OPTIONAL_FN_TYPE(name) *apu__opt = name; \
00071 apr_dynamic_fn_register(#name,(apr_opt_fn_t *)apu__opt); \
00072 } while (0)
00073
00077 APU_DECLARE(apr_opt_fn_t *) apr_dynamic_fn_retrieve(const char *szName);
00078
00083 #define APR_RETRIEVE_OPTIONAL_FN(name) \
00084 (APR_OPTIONAL_FN_TYPE(name) *)apr_dynamic_fn_retrieve(#name)
00085
00087 #ifdef __cplusplus
00088 }
00089 #endif
00090
00091 #endif