+ struct {
+ uint32_t data_size; /* following capture data */
+ uint32_t reloc_offset;
+ uint64_t seqnum;
+ } LTTNG_PACKED capture;
+ struct lttng_ust_counter counter;
+ struct lttng_ust_counter_global counter_global;
+ struct lttng_ust_counter_cpu counter_cpu;
+ /*
+ * For LTTNG_UST_EVENT_NOTIFIER_CREATE, a struct
+ * lttng_ust_event_notifier implicitly follows struct
+ * ustcomm_ust_msg.
+ */
+ struct {
+ /* Length of struct lttng_ust_event_notifier */
+ uint32_t len;
+ } event_notifier;