-map_t * map_alloc (map_type_t map_type);
-uint64_t map_get (map_t *map, const void *key_data, uint32_t key_len);
-uint64_t map_set (map_t *map, const void *key_data, uint32_t key_len, uint64_t new_val);
-uint64_t map_add (map_t *map, const void *key_data, uint32_t key_len, uint64_t new_val);
-uint64_t map_cas (map_t *map, const void *key_data, uint32_t key_len, uint64_t expected_val, uint64_t new_val);
-uint64_t map_replace(map_t *map, const void *key_data, uint32_t key_len, uint64_t new_val);
-uint64_t map_remove (map_t *map, const void *key_data, uint32_t key_len);
+map_t * map_alloc (map_type_t map_type, const datatype_t *key_type);
+uint64_t map_get (map_t *map, void *key);
+uint64_t map_set (map_t *map, void *key, uint64_t new_val);
+uint64_t map_add (map_t *map, void *key, uint64_t new_val);
+uint64_t map_cas (map_t *map, void *key, uint64_t expected_val, uint64_t new_val);
+uint64_t map_replace(map_t *map, void *key, uint64_t new_val);
+uint64_t map_remove (map_t *map, void *key);