trace updater (#2109)

[bytom/bytom.git] / protocol / protocol.go

diff --git a/protocol/protocol.go b/protocol/protocol.go
index d85f70c..7aed23a 100644 (file)
--- a/protocol/protocol.go
+++ b/protocol/protocol.go
@@ -138,6 +138,13 @@ func (c *Chain) BestBlockHash() *bc.Hash {
        return &bestHash
 }
 
+// BestChain return the current height and block hash of the chain
+func (c *Chain) BestChain() (uint64, bc.Hash) {
+       c.cond.L.Lock()
+       defer c.cond.L.Unlock()
+       return c.bestBlockHeader.Height, c.bestBlockHeader.Hash()
+}
+
 // AllValidators return all validators has vote num
 func (c *Chain) AllValidators(blockHash *bc.Hash) ([]*state.Validator, error) {
        parentCheckpoint, err := c.casper.ParentCheckpoint(blockHash)