extern IMP _cache_getImp(Class cls, SEL sel);
extern Method _cache_getMethod(Class cls, SEL sel, IMP objc_msgForward_internal_imp);
+extern void cache_init(void);
extern void flush_cache(Class cls);
extern bool _cache_fill(Class cls, Method meth, SEL sel);
extern void _cache_addForwardEntry(Class cls, SEL sel);