Merge pull request #2809 from tbenz9/consensus-optimization

only update subscribers if there are any
NebulousLabs · Mar 2, 2018 · 978bed1 · 978bed1
2 parents 17432ba + a9644e3
commit 978bed1
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/modules/consensus/subscribe.go b/modules/consensus/subscribe.go
@@ -99,6 +99,9 @@ func (cs *ConsensusSet) computeConsensusChange(tx *bolt.Tx, ce changeEntry) (mod
 // consensus set. updateSubscribers does not alter the changelog, the changelog
 // must be updated beforehand.
 func (cs *ConsensusSet) updateSubscribers(ce changeEntry) {
+	if len(cs.subscribers) == 0 {
+		return
+	}
 	// Get the consensus change and send it to all subscribers.
 	var cc modules.ConsensusChange
 	err := cs.db.View(func(tx *bolt.Tx) error {