Init last commit cache

core/blockchain.go

@@ -65,6 +65,7 @@ const (
 	badBlockLimit       = 10
 	triesInMemory       = 128
 	shardCacheLimit     = 2
+	commitsCacheLimit   = 10
 	epochCacheLimit     = 10
 
 	// BlocksPerEpoch is the number of blocks in one epoch
@@ -168,26 +169,28 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *par
 	futureBlocks, _ := lru.New(maxFutureBlocks)
 	badBlocks, _ := lru.New(badBlockLimit)
 	shardCache, _ := lru.New(shardCacheLimit)
+	commitsCache, _ := lru.New(commitsCacheLimit)
 	epochCache, _ := lru.New(epochCacheLimit)
 
 	bc := &BlockChain{
-		chainConfig:     chainConfig,
-		cacheConfig:     cacheConfig,
-		db:              db,
-		triegc:          prque.New(nil),
-		stateCache:      state.NewDatabase(db),
-		quit:            make(chan struct{}),
-		shouldPreserve:  shouldPreserve,
-		bodyCache:       bodyCache,
-		bodyRLPCache:    bodyRLPCache,
-		receiptsCache:   receiptsCache,
-		blockCache:      blockCache,
-		futureBlocks:    futureBlocks,
-		shardStateCache: shardCache,
-		epochCache:      epochCache,
-		engine:          engine,
-		vmConfig:        vmConfig,
-		badBlocks:       badBlocks,
+		chainConfig:      chainConfig,
+		cacheConfig:      cacheConfig,
+		db:               db,
+		triegc:           prque.New(nil),
+		stateCache:       state.NewDatabase(db),
+		quit:             make(chan struct{}),
+		shouldPreserve:   shouldPreserve,
+		bodyCache:        bodyCache,
+		bodyRLPCache:     bodyRLPCache,
+		receiptsCache:    receiptsCache,
+		blockCache:       blockCache,
+		futureBlocks:     futureBlocks,
+		shardStateCache:  shardCache,
+		lastCommitsCache: commitsCache,
+		epochCache:       epochCache,
+		engine:           engine,
+		vmConfig:         vmConfig,
+		badBlocks:        badBlocks,
 	}
 	bc.SetValidator(NewBlockValidator(chainConfig, bc, engine))
 	bc.SetProcessor(NewStateProcessor(chainConfig, bc, engine))