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apr_optional.h

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00001 /* ====================================================================
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00054 
00055 #ifndef APR_OPTIONAL_H
00056 #define APR_OPTIONAL_H
00057 
00058 #include "apu.h"
00063 #ifdef __cplusplus
00064 extern "C" {
00065 #endif
00066 
00080 #define APR_OPTIONAL_FN_TYPE(name) apr_OFN_##name##_t
00081 
00088 #define APR_DECLARE_OPTIONAL_FN(ret,name,args) \
00089 typedef ret (APR_OPTIONAL_FN_TYPE(name)) args
00090 
00097 typedef void (apr_opt_fn_t)(void);
00099 APU_DECLARE_NONSTD(void) apr_dynamic_fn_register(const char *szName, 
00100                                                   apr_opt_fn_t *pfn);
00101     
00103 APU_DECLARE_NONSTD(void) apr_register_optional_fn(const char *szName, 
00104                                                   apr_opt_fn_t *pfn);
00105 
00112 #define APR_REGISTER_OPTIONAL_FN(name) do { \
00113   APR_OPTIONAL_FN_TYPE(name) *apu__opt = name; \
00114   apr_dynamic_fn_register(#name,(apr_opt_fn_t *)apu__opt); \
00115 } while (0)
00116 
00120 APU_DECLARE(apr_opt_fn_t *) apr_dynamic_fn_retrieve(const char *szName);
00121 
00123 APU_DECLARE(apr_opt_fn_t *) apr_retrieve_optional_fn(const char *szName);
00124 
00129 #define APR_RETRIEVE_OPTIONAL_FN(name) \
00130         (APR_OPTIONAL_FN_TYPE(name) *)apr_dynamic_fn_retrieve(#name)
00131 
00133 #ifdef __cplusplus
00134 }
00135 #endif
00136 
00137 #endif /* APR_OPTIONAL_H */

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