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Improve chain state init efficiency #1580

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merged 1 commit into from
Jun 8, 2020
Merged

Improve chain state init efficiency #1580

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13 changes: 2 additions & 11 deletions blockchain/chainio.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1149,18 +1149,9 @@ func (b *BlockChain) initChainState() error {

blockIndexBucket := dbTx.Metadata().Bucket(blockIndexBucketName)

// Determine how many blocks will be loaded into the index so we can
// allocate the right amount.
var blockCount int32
cursor := blockIndexBucket.Cursor()
for ok := cursor.First(); ok; ok = cursor.Next() {
blockCount++
}
blockNodes := make([]blockNode, blockCount)

var i int32
var lastNode *blockNode
cursor = blockIndexBucket.Cursor()
cursor := blockIndexBucket.Cursor()
for ok := cursor.First(); ok; ok = cursor.Next() {
header, status, err := deserializeBlockRow(cursor.Value())
if err != nil {
Expand Down Expand Up @@ -1193,7 +1184,7 @@ func (b *BlockChain) initChainState() error {

// Initialize the block node for the block, connect it,
// and add it to the block index.
node := &blockNodes[i]
node := new(blockNode)
initBlockNode(node, header, parent)
node.status = status
b.index.addNode(node)
Expand Down