trace_id = strdup(A_surfxml_trace_id);
trace_file = strdup(A_surfxml_trace_file);
surf_parse_get_double(&trace_periodicity, A_surfxml_trace_periodicity);
trace_id = strdup(A_surfxml_trace_id);
trace_file = strdup(A_surfxml_trace_file);
surf_parse_get_double(&trace_periodicity, A_surfxml_trace_periodicity);