+
+int print_missing_or_multiple_domains(unsigned int sum)
+{
+ int ret = 0;
+
+ if (sum == 0) {
+ ERR("Please specify a domain (-k/-u/-j).");
+ ret = -1;
+ } else if (sum > 1) {
+ ERR("Multiple domains specified.");
+ ret = -1;
+ }
+
+ return ret;
+}
+
+/*
+ * Get the discarded events and lost packet counts.
+ */
+void print_session_stats(const char *session_name)
+{
+ int count, nb_domains, domain_idx, channel_idx;
+ struct lttng_domain *domains;
+ struct lttng_channel *channels;
+ uint64_t discarded_total = 0, lost_total = 0;
+
+ nb_domains = lttng_list_domains(session_name, &domains);
+ if (nb_domains < 0) {
+ goto end;
+ }
+ for (domain_idx = 0; domain_idx < nb_domains; domain_idx++) {
+ struct lttng_handle *handle = lttng_create_handle(session_name,
+ &domains[domain_idx]);
+
+ if (!handle) {
+ ERR("Failed to create session handle while printing session stats.");
+ goto end;
+ }
+
+ count = lttng_list_channels(handle, &channels);
+ for (channel_idx = 0; channel_idx < count; channel_idx++) {
+ int ret;
+ uint64_t discarded = 0, lost = 0;
+ struct lttng_channel *channel = &channels[channel_idx];
+
+ ret = lttng_channel_get_discarded_event_count(channel,
+ &discarded);
+ if (ret) {
+ ERR("Failed to retrieve discarded event count from channel %s",
+ channel->name);
+ }
+
+ ret = lttng_channel_get_lost_packet_count(channel,
+ &lost);
+ if (ret) {
+ ERR("Failed to retrieve lost packet count from channel %s",
+ channel->name);
+ }
+
+ discarded_total += discarded;
+ lost_total += lost;
+ }
+ lttng_destroy_handle(handle);
+ }
+ if (discarded_total > 0) {
+ MSG("[warning] %" PRIu64 " events discarded, please refer to "
+ "the documentation on channel configuration.",
+ discarded_total);
+ }
+ if (lost_total > 0) {
+ MSG("[warning] %" PRIu64 " packets lost, please refer to "
+ "the documentation on channel configuration.",
+ lost_total);
+ }
+
+end:
+ return;
+}