urcu_ref_init(&new_element->ref);
cds_lfht_node_init(&new_element->ht_node);
new_element->trace_chunk_registry = trace_chunk_registry;
urcu_ref_init(&new_element->ref);
cds_lfht_node_init(&new_element->ht_node);
new_element->trace_chunk_registry = trace_chunk_registry;