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db: speedup block addition

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by avoiding repeated (de)serialization
This commit is contained in:
moneromooo-monero
2018-11-11 13:39:00 +00:00
parent 5fb4a9719c
commit e69477bf25
4 changed files with 83 additions and 37 deletions
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src/blockchain_db/lmdb/db_lmdb.cpp
+16 -11
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@@ -865,21 +865,26 @@ uint64_t BlockchainLMDB::add_transaction_data(const crypto::hash& blk_hash, cons
cryptonote::blobdata blob = tx_to_blob(tx);
MDB_val_sized(blobval, blob);
std::stringstream ss;
binary_archive<true> ba(ss);
bool r = const_cast<cryptonote::transaction&>(tx).serialize_base(ba);
if (!r)
throw0(DB_ERROR("Failed to serialize pruned tx"));
std::string pruned = ss.str();
MDB_val_sized(pruned_blob, pruned);
unsigned int unprunable_size = tx.unprunable_size;
if (unprunable_size == 0)
{
std::stringstream ss;
binary_archive<true> ba(ss);
bool r = const_cast<cryptonote::transaction&>(tx).serialize_base(ba);
if (!r)
throw0(DB_ERROR("Failed to serialize pruned tx"));
unprunable_size = ss.str().size();
}
if (unprunable_size > blob.size())
throw0(DB_ERROR("pruned tx size is larger than tx size"));
MDB_val pruned_blob = {unprunable_size, (void*)blob.data()};
result = mdb_cursor_put(m_cur_txs_pruned, &val_tx_id, &pruned_blob, MDB_APPEND);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add pruned tx blob to db transaction: ", result).c_str()));
if (pruned.size() > blob.size())
throw0(DB_ERROR("pruned tx size is larger than tx size"));
cryptonote::blobdata prunable(blob.data() + pruned.size(), blob.size() - pruned.size());
MDB_val_sized(prunable_blob, prunable);
MDB_val prunable_blob = {blob.size() - unprunable_size, (void*)(blob.data() + unprunable_size)};
result = mdb_cursor_put(m_cur_txs_prunable, &val_tx_id, &prunable_blob, MDB_APPEND);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add prunable tx blob to db transaction: ", result).c_str()));