- if (!is_local_trace || !new_trace_chunk) {
- /* Not an error. */
- goto end;
- }
-
- if (!update_stream_trace_chunk) {
- goto end;
- }
-
- channel_hash = consumer_data.stream_per_chan_id_ht->hash_fct(
- &channel->key, lttng_ht_seed);
- rcu_read_lock();
- cds_lfht_for_each_entry_duplicate(consumer_data.stream_per_chan_id_ht->ht,
- channel_hash,
- consumer_data.stream_per_chan_id_ht->match_fct,
- &channel->key, &iter, stream, node_channel_id.node) {
- bool acquired_reference, should_regenerate_metadata = false;
-
- acquired_reference = lttng_trace_chunk_get(channel->trace_chunk);
- assert(acquired_reference);
-
- pthread_mutex_lock(&stream->lock);
-
- /*
- * On a transition from "no-chunk" to a new chunk, a metadata
- * stream's content must be entirely dumped. This must occcur
- * _after_ the creation of the metadata stream's output files
- * as the consumption thread (not necessarily the one executing
- * this) may start to consume during the call to
- * consumer_metadata_stream_dump().
- */
- should_regenerate_metadata =
- stream->metadata_flag &&
- !stream->trace_chunk && channel->trace_chunk;
- stream->trace_chunk = channel->trace_chunk;
- ret = consumer_stream_create_output_files(stream, true);
- if (ret) {
- pthread_mutex_unlock(&stream->lock);
- goto end_rcu_unlock;
- }
- if (should_regenerate_metadata) {
- ret = consumer_metadata_stream_dump(stream);
- }
- pthread_mutex_unlock(&stream->lock);
- if (ret) {
- goto end_rcu_unlock;
- }
- }
-end_rcu_unlock:
- rcu_read_unlock();