extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream);
int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,
extern void lttng_ustconsumer_del_stream(struct lttng_consumer_stream *stream);
int lttng_ustconsumer_read_subbuffer(struct lttng_consumer_stream *stream,