union {
struct lttng_ust_tracer_version version;
struct lttng_ust_channel channel;
+ struct lttng_ust_stream stream;
struct lttng_ust_event event;
struct lttng_ust_context context;
} u;
uint32_t ret_code; /* enum enum lttcomm_return_code */
uint32_t ret_val; /* return value */
union {
+ struct {
+ uint64_t memory_map_size;
+ } channel;
+ struct {
+ uint64_t memory_map_size;
+ } stream;
} u;
};