+typedef memcached_return (*memcached_trigger_key)(memcached_st *ptr,
+ const char *key, size_t key_length,
+ memcached_result_st *result);
+typedef memcached_return (*memcached_trigger_delete_key)(memcached_st *ptr,
+ const char *key, size_t key_length);
+
+typedef memcached_return (*memcached_dump_func)(memcached_st *ptr,
+ const char *key, size_t key_length, void *context);
+
+typedef struct {
+ memcached_execute_function *callback;
+ void *context;
+ unsigned int number_of_callback;
+} memcached_callback_st;