nb_trace = lttv_traceset_number(traceset);
for(i = 0 ; i < nb_trace ; i++) {
ts = (LttvTraceStats *)self->parent.parent.traces[i];
nb_trace = lttv_traceset_number(traceset);
for(i = 0 ; i < nb_trace ; i++) {
ts = (LttvTraceStats *)self->parent.parent.traces[i];