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Improve chain state init efficiency

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Remove unnecessary slice of all block indexes and
remove DB iteration over all block indexes that
used to determined the size of the slice.
This commit is contained in:
Mikael Lindlof 2020-05-17 13:02:24 +01:00 • committed by John C. Vernaleo
parent 714de3f3c7
commit b11bf582c5
1 changed files with 2 additions and 11 deletions
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13
blockchain/chainio.go
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@ -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 {
@ -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)