.

wcfs/internal/xbtree/δbtail.go

@@ -562,7 +562,7 @@ func (δTtail *_ΔTtail) _runRebuildJob(root zodb.Oid, δBtail *ΔBtail) (err er
 
 	// merge rebuild result
 	if err == nil {
-		// XXX comment about RCU snapshot
+		// vδT <- vδTnew RCU;  trackSet += δtrackSet
 		δTtail.vδT = vδTClone(δTtail.vδT)
 		δrevSet := vδTMergeInplace(&δTtail.vδT, vδTnew)
 		δBtail.trackSet.UnionInplace(δtrackSet)
@@ -586,7 +586,7 @@ func (δBtail *ΔBtail) rebuild1(root zodb.Oid) error {
 	if err != nil {
 		return err
 	}
-	// XXX comment about RCU snapshot
+	// vδT <- vδTnew RCU;  trackSet += δtrackSet
 	δTtail.vδT = vδTClone(δTtail.vδT)
 	δrevSet := vδTMergeInplace(&δTtail.vδT, vδTnew)
 	δBtail.trackSet.UnionInplace(δtrackSet)
@@ -874,7 +874,7 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
 			if err != nil {
 				return ΔB{}, err
 			}
-			// XXX comment about RCU snapshot
+			// vδT <- vδTnew RCU;  trackSet += δtrackSet
 			δTtail.vδT = vδTClone(δTtail.vδT)
 			δrevSet := vδTMergeInplace(&δTtail.vδT, vδTnew)
 			δBtail.trackSet.UnionInplace(δtrackSet)