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-rw-r--r--consensus/consensus.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/consensus/consensus.go b/consensus/consensus.go
index 5774af1a7..827175444 100644
--- a/consensus/consensus.go
+++ b/consensus/consensus.go
@@ -96,6 +96,9 @@ type Engine interface {
// APIs returns the RPC APIs this consensus engine provides.
APIs(chain ChainReader) []rpc.API
+
+ // Close terminates any background threads maintained by the consensus engine.
+ Close() error
}
// PoW is a consensus engine based on proof-of-work.