Support for "read committed read consistency" mode in monitoring tables

doc/README.monitoring_tables

@@ -119,6 +119,7 @@ Monitoring tables
           1: concurrency
           2: read committed record version
           3: read committed no record version
+		  4: read committed read consistency
       - MON$LOCK_TIMEOUT (lock timeout)
           -1: infinite wait
           0: no wait

src/jrd/Monitoring.cpp

@@ -978,8 +978,10 @@ void Monitoring::putTransaction(SnapshotData::DumpRecord& record, const jrd_tra*
 		temp = iso_mode_consistency;
 	else if (transaction->tra_flags & TRA_read_committed)
 	{
-		temp = (transaction->tra_flags & TRA_rec_version) ?
-			iso_mode_rc_version : iso_mode_rc_no_version;
+		temp = (transaction->tra_flags & TRA_read_consistency) ?
+			iso_mode_rc_read_consistency :
+			(transaction->tra_flags & TRA_rec_version) ?
+				iso_mode_rc_version : iso_mode_rc_no_version;
 	}
 	else
 		temp = iso_mode_concurrency;

src/jrd/constants.h

@@ -265,7 +265,8 @@ enum tra_iso_mode_t {
 	iso_mode_consistency = 0,
 	iso_mode_concurrency = 1,
 	iso_mode_rc_version = 2,
-	iso_mode_rc_no_version = 3
+	iso_mode_rc_no_version = 3,
+	iso_mode_rc_read_consistency = 4
 };
 
 // statistics groups