@@ -193,24 +193,25 @@ static xid_t max(xid_t a, xid_t b) {
193193
194194static void gen_snapshot (Snapshot * s ) {
195195Transaction * t ;
196+ int n = 0 ;
196197s -> times_sent = 0 ;
197- s -> nactive = 0 ;
198- s -> xmin = MAX_XID ;
199- s -> xmax = MIN_XID ;
200- for (t = (Transaction * )active_transactions .next ;t != (Transaction * )& active_transactions ;t = (Transaction * )t -> elem .next ) {
198+ for (t = (Transaction * )active_transactions .prev ;t != (Transaction * )& active_transactions ;t = (Transaction * )t -> elem .prev ) {
199+ /*
201200if (t->xid < s->xmin) {
202201s->xmin = t->xid;
203202}
204203if (t->xid >= s->xmax) {
205204s->xmax = t->xid + 1;
206205}
207- s -> active [s -> nactive ++ ]= t -> xid ;
206+ */
207+ s -> active [n ++ ]= t -> xid ;
208208}
209- if (s -> nactive > 0 ) {
210- assert (s -> xmin < MAX_XID );
211- assert (s -> xmax > MIN_XID );
209+ s -> nactive = n ;
210+ if (n > 0 ) {
211+ s -> xmin = s -> active [0 ];
212+ s -> xmax = s -> active [n - 1 ];
212213assert (s -> xmin <=s -> xmax );
213- snapshot_sort (s );
214+ // snapshot_sort(s);
214215}else {
215216s -> xmin = s -> xmax = 0 ;
216217}