diff options
| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2018-10-31 18:52:28 +0000 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2018-11-04 13:23:00 +0000 |
| commit | 6f7a5fd4f70ee981c4a4eb82adb0349a2c033a6b (patch) | |
| tree | b1a3e7c17ce921f464fd9479e1b18252d67d76c0 | |
| parent | db_lmdb: save some string copies for readonly db keys/values (diff) | |
| download | monero-6f7a5fd4f70ee981c4a4eb82adb0349a2c033a6b.tar.xz | |
db_lmdb: slight speedup getting array data from the blockchain
| -rw-r--r-- | src/blockchain_db/lmdb/db_lmdb.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp index d642069f8..c4b161899 100644 --- a/src/blockchain_db/lmdb/db_lmdb.cpp +++ b/src/blockchain_db/lmdb/db_lmdb.cpp @@ -3160,6 +3160,7 @@ void BlockchainLMDB::get_output_tx_and_index_from_global(const std::vector<uint6 LOG_PRINT_L3("BlockchainLMDB::" << __func__); check_open(); tx_out_indices.clear(); + tx_out_indices.reserve(global_indices.size()); TXN_PREFIX_RDONLY(); RCURSOR(output_txs); @@ -3174,9 +3175,8 @@ void BlockchainLMDB::get_output_tx_and_index_from_global(const std::vector<uint6 else if (get_result) throw0(DB_ERROR("DB error attempting to fetch output tx hash")); - outtx *ot = (outtx *)v.mv_data; - auto result = tx_out_index(ot->tx_hash, ot->local_index); - tx_out_indices.push_back(result); + const outtx *ot = (const outtx *)v.mv_data; + tx_out_indices.push_back(tx_out_index(ot->tx_hash, ot->local_index)); } TXN_POSTFIX_RDONLY(); @@ -3188,6 +3188,7 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui TIME_MEASURE_START(db3); check_open(); outputs.clear(); + outputs.reserve(offsets.size()); TXN_PREFIX_RDONLY(); @@ -3211,19 +3212,19 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui else if (get_result) throw0(DB_ERROR(lmdb_error("Error attempting to retrieve an output pubkey from the db", get_result).c_str())); - output_data_t data; if (amount == 0) { const outkey *okp = (const outkey *)v.mv_data; - data = okp->data; + outputs.push_back(okp->data); } else { const pre_rct_outkey *okp = (const pre_rct_outkey *)v.mv_data; + outputs.resize(outputs.size() + 1); + output_data_t &data = outputs.back(); memcpy(&data, &okp->data, sizeof(pre_rct_output_data_t)); data.commitment = rct::zeroCommit(amount); } - outputs.push_back(data); } TXN_POSTFIX_RDONLY(); @@ -3239,6 +3240,7 @@ void BlockchainLMDB::get_output_tx_and_index(const uint64_t& amount, const std:: indices.clear(); std::vector <uint64_t> tx_indices; + tx_indices.reserve(offsets.size()); TXN_PREFIX_RDONLY(); RCURSOR(output_amounts); |