+/*
+ * Get run-time attributes if the session has been started (discarded events,
+ * lost packets).
+ */
+static int get_kernel_runtime_stats(struct ltt_session *session,
+ struct ltt_kernel_channel *kchan, uint64_t *discarded_events,
+ uint64_t *lost_packets)
+{
+ int ret;
+
+ if (!session->has_been_started) {
+ ret = 0;
+ *discarded_events = 0;
+ *lost_packets = 0;
+ goto end;
+ }
+
+ ret = consumer_get_discarded_events(session->id, kchan->fd,
+ session->kernel_session->consumer,
+ discarded_events);
+ if (ret < 0) {
+ goto end;
+ }
+
+ ret = consumer_get_lost_packets(session->id, kchan->fd,
+ session->kernel_session->consumer,
+ lost_packets);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+/*
+ * Get run-time attributes if the session has been started (discarded events,
+ * lost packets).
+ */
+static int get_ust_runtime_stats(struct ltt_session *session,
+ struct ltt_ust_channel *uchan, uint64_t *discarded_events,
+ uint64_t *lost_packets)
+{
+ int ret;
+ struct ltt_ust_session *usess;
+
+ usess = session->ust_session;
+
+ if (!usess || !session->has_been_started) {
+ *discarded_events = 0;
+ *lost_packets = 0;
+ ret = 0;
+ goto end;
+ }
+
+ if (usess->buffer_type == LTTNG_BUFFER_PER_UID) {
+ ret = ust_app_uid_get_channel_runtime_stats(usess->id,
+ &usess->buffer_reg_uid_list,
+ usess->consumer, uchan->id,
+ uchan->attr.overwrite,
+ discarded_events,
+ lost_packets);
+ } else if (usess->buffer_type == LTTNG_BUFFER_PER_PID) {
+ ret = ust_app_pid_get_channel_runtime_stats(usess,
+ uchan, usess->consumer,
+ uchan->attr.overwrite,
+ discarded_events,
+ lost_packets);
+ if (ret < 0) {
+ goto end;
+ }
+ *discarded_events += uchan->per_pid_closed_app_discarded;
+ *lost_packets += uchan->per_pid_closed_app_lost;
+ } else {
+ ERR("Unsupported buffer type");
+ ret = -1;
+ goto end;
+ }
+
+end:
+ return ret;
+}
+