live_stream_iter->current_inactivity_ts); \
} while (0);
-BT_HIDDEN
bool lttng_live_graph_is_canceled(struct lttng_live_msg_iter *msg_iter)
{
bool ret;
return trace;
}
-BT_HIDDEN
struct lttng_live_trace *
lttng_live_session_borrow_or_create_trace_by_id(struct lttng_live_session *session,
uint64_t trace_id)
return trace;
}
-BT_HIDDEN
int lttng_live_add_session(struct lttng_live_msg_iter *lttng_live_msg_iter, uint64_t session_id,
const char *hostname, const char *session_name)
{
return;
}
-BT_HIDDEN
void lttng_live_msg_iter_finalize(bt_self_message_iterator *self_msg_iter)
{
struct lttng_live_msg_iter *lttng_live_msg_iter;
if (orig_state == LTTNG_LIVE_STREAM_QUIESCENT_NO_DATA && last_inact_ts == curr_inact_ts) {
/*
- * Because the stream is in the QUIESCENT_NO_DATA
- * state, we can assert that the last_inactivity_ts was
- * set and can be safely used in the `if` above.
- */
+ * Because the stream is in the QUIESCENT_NO_DATA
+ * state, we can assert that the last_inactivity_ts was
+ * set and can be safely used in the `if` above.
+ */
BT_ASSERT(lttng_live_stream->last_inactivity_ts.is_set);
ret = LTTNG_LIVE_ITERATOR_STATUS_AGAIN;
}
}
- BT_COMP_LOGD("Updating all streams and metadata for session: "
+ BT_COMP_LOGD("Updating all data streams: "
"session-id=%" PRIu64 ", session-name=\"%s\"",
session->id, session->session_name->str);
status = lttng_live_session_get_new_streams(session, lttng_live_msg_iter->self_msg_iter);
- if (status != LTTNG_LIVE_ITERATOR_STATUS_OK && status != LTTNG_LIVE_ITERATOR_STATUS_END) {
+ switch (status) {
+ case LTTNG_LIVE_ITERATOR_STATUS_OK:
+ break;
+ case LTTNG_LIVE_ITERATOR_STATUS_END:
+ /*
+ * We received a `_END` from the `_get_new_streams()` function,
+ * which means no more data will ever be received from the data
+ * streams of this session. But it's possible that the metadata
+ * is incomplete.
+ * The live protocol guarantees that we receive all the
+ * metadata needed before we receive data streams needing it.
+ * But it's possible to receive metadata NOT needed by
+ * data streams after the session was closed. For example, this
+ * could happen if a new event is registered and the session is
+ * stopped before any tracepoint for that event is actually
+ * fired.
+ */
+ BT_COMP_LOGD(
+ "Updating streams returned _END status. Override status to _OK in order fetch any remaining metadata:"
+ "session-id=%" PRIu64 ", session-name=\"%s\"",
+ session->id, session->session_name->str);
+ status = LTTNG_LIVE_ITERATOR_STATUS_OK;
+ break;
+ default:
goto end;
}
+ BT_COMP_LOGD("Updating metadata stream for session: "
+ "session-id=%" PRIu64 ", session-name=\"%s\"",
+ session->id, session->session_name->str);
+
trace_idx = 0;
while (trace_idx < session->traces->len) {
struct lttng_live_trace *trace =
switch (status) {
case LTTNG_LIVE_ITERATOR_STATUS_OK:
case LTTNG_LIVE_ITERATOR_STATUS_END:
+ /*
+ * A session returned `_END`. Other sessions may still
+ * be active so we override the status and continue
+ * looping if needed.
+ */
break;
default:
goto end;
struct lttng_live_msg_iter *lttng_live_msg_iter,
const bt_message *msg, int64_t last_msg_ts_ns, int64_t *ts_ns)
{
- const bt_clock_class *clock_class = NULL;
const bt_clock_snapshot *clock_snapshot = NULL;
int ret = 0;
bt_logging_level log_level = lttng_live_msg_iter->log_level;
switch (bt_message_get_type(msg)) {
case BT_MESSAGE_TYPE_EVENT:
- clock_class = bt_message_event_borrow_stream_class_default_clock_class_const(msg);
- BT_ASSERT_DBG(clock_class);
-
clock_snapshot = bt_message_event_borrow_default_clock_snapshot_const(msg);
break;
case BT_MESSAGE_TYPE_PACKET_BEGINNING:
- clock_class =
- bt_message_packet_beginning_borrow_stream_class_default_clock_class_const(msg);
- BT_ASSERT(clock_class);
-
clock_snapshot = bt_message_packet_beginning_borrow_default_clock_snapshot_const(msg);
break;
case BT_MESSAGE_TYPE_PACKET_END:
- clock_class = bt_message_packet_end_borrow_stream_class_default_clock_class_const(msg);
- BT_ASSERT(clock_class);
-
clock_snapshot = bt_message_packet_end_borrow_default_clock_snapshot_const(msg);
break;
case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
- clock_class =
- bt_message_discarded_events_borrow_stream_class_default_clock_class_const(msg);
- BT_ASSERT(clock_class);
-
clock_snapshot =
bt_message_discarded_events_borrow_beginning_default_clock_snapshot_const(msg);
break;
case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
- clock_class =
- bt_message_discarded_packets_borrow_stream_class_default_clock_class_const(msg);
- BT_ASSERT(clock_class);
-
clock_snapshot =
bt_message_discarded_packets_borrow_beginning_default_clock_snapshot_const(msg);
break;
goto end;
}
- clock_class = bt_clock_snapshot_borrow_clock_class_const(clock_snapshot);
- BT_ASSERT_DBG(clock_class);
-
ret = bt_clock_snapshot_get_ns_from_origin(clock_snapshot, ts_ns);
if (ret) {
BT_COMP_LOGE_APPEND_CAUSE(self_comp,
}
}
-BT_HIDDEN
bt_message_iterator_class_next_method_status
lttng_live_msg_iter_next(bt_self_message_iterator *self_msg_it, bt_message_array_const msgs,
uint64_t capacity, uint64_t *count)
return lttng_live_msg_iter;
}
-BT_HIDDEN
bt_message_iterator_class_initialize_method_status
lttng_live_msg_iter_init(bt_self_message_iterator *self_msg_it,
bt_self_message_iterator_configuration *config,
return status;
}
-BT_HIDDEN
bt_component_class_query_method_status lttng_live_query(bt_self_component_class_source *comp_class,
bt_private_query_executor *priv_query_exec,
const char *object, const bt_value *params,
g_free(lttng_live);
}
-BT_HIDDEN
void lttng_live_component_finalize(bt_self_component_source *component)
{
lttng_live_component *data = (lttng_live_component *) bt_self_component_get_data(
return status;
}
-BT_HIDDEN
bt_component_class_initialize_method_status
lttng_live_component_init(bt_self_component_source *self_comp_src,
bt_self_component_source_configuration *config, const bt_value *params,
projects / babeltrace.git / blobdiff