foster/bitcoin-bitcoin-core
0
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-02-03 09:56:38 -05:00
Code Issues Activity

refactor: Rewrite AddToBlockIndex with try_emplace

Browse source
This commit is contained in:
Carl Dong 2022-01-19 13:55:40 -05:00
parent c05cf7aa1e
commit 6c23c41561
1 changed files with 5 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
src/node/blockstorage.cpp
View file

@ -50,22 +50,17 @@ CBlockIndex* BlockManager::AddToBlockIndex(const CBlockHeader& block)
{
AssertLockHeld(cs_main);
// Check for duplicate
uint256 hash = block.GetHash();
BlockMap::iterator it = m_block_index.find(hash);
if (it != m_block_index.end()) {
return &it->second;
auto [mi, inserted] = m_block_index.try_emplace(block.GetHash(), block);
if (!inserted) {
return &mi->second;
}
CBlockIndex* pindexNew = &(*mi).second;
// Construct new block index object
CBlockIndex new_index{block};
// We assign the sequence id to blocks only when the full data is available,
// to avoid miners withholding blocks but broadcasting headers, to get a
// competitive advantage.
new_index.nSequenceId = 0;
BlockMap::iterator mi = m_block_index.insert(std::make_pair(hash, std::move(new_index))).first;
pindexNew->nSequenceId = 0;
CBlockIndex* pindexNew = &(*mi).second;
pindexNew->phashBlock = &((*mi).first);
BlockMap::iterator miPrev = m_block_index.find(block.hashPrevBlock);
if (miPrev != m_block_index.end()) {