map
typedef std::map<int, const char *> EnumMap;
typedef std::map<int, TypeHandler *> SelectMap;
typedef std::map<const char*, int32, ident_compare_t> sym_tab_t;
typedef std::map<const char*, type_t, ident_compare_t> type_tab_t;
typedef std::map<const char*, define_t, ident_compare_t> define_tab_t;
typedef std::map<int, service_connection*> ServiceSocketMap;
map(struct dir_info *d, size_t sz, int zero_fill)