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blockchain_db: speedup tx output gathering

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We know all the data we'll want for getblocks.bin is contiguous
This commit is contained in:
moneromooo-monero 2018-12-16 13:28:49 +00:00
parent 6bc0c7e685
commit 008647d7eb
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GPG key ID: 686F07454D6CEFC3
9 changed files with 75 additions and 48 deletions
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29
src/cryptonote_core/blockchain.cpp
View file

@ -2297,6 +2297,22 @@ bool Blockchain::check_for_double_spend(const transaction& tx, key_images_contai
return true;
}
//------------------------------------------------------------------
bool Blockchain::get_tx_outputs_gindexs(const crypto::hash& tx_id, size_t n_txes, std::vector<std::vector<uint64_t>>& indexs) const
{
LOG_PRINT_L3("Blockchain::" << __func__);
CRITICAL_REGION_LOCAL(m_blockchain_lock);
uint64_t tx_index;
if (!m_db->tx_exists(tx_id, tx_index))
{
MERROR_VER("get_tx_outputs_gindexs failed to find transaction with id = " << tx_id);
return false;
}
indexs = m_db->get_tx_amount_output_indices(tx_index, n_txes);
CHECK_AND_ASSERT_MES(n_txes == indexs.size(), false, "Wrong indexs size");
return true;
}
//------------------------------------------------------------------
bool Blockchain::get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<uint64_t>& indexs) const
{
LOG_PRINT_L3("Blockchain::" << __func__);
@ -2307,16 +2323,9 @@ bool Blockchain::get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<u
MERROR_VER("get_tx_outputs_gindexs failed to find transaction with id = " << tx_id);
return false;
}
// get amount output indexes, currently referred to in parts as "output global indices", but they are actually specific to amounts
indexs = m_db->get_tx_amount_output_indices(tx_index);
if (indexs.empty())
{
// empty indexs is only valid if the vout is empty, which is legal but rare
cryptonote::transaction tx = m_db->get_tx(tx_id);
CHECK_AND_ASSERT_MES(tx.vout.empty(), false, "internal error: global indexes for transaction " << tx_id << " is empty, and tx vout is not");
}
std::vector<std::vector<uint64_t>> indices = m_db->get_tx_amount_output_indices(tx_index, 1);
CHECK_AND_ASSERT_MES(indices.size() == 1, false, "Wrong indices size");
indexs = indices.front();
return true;
}
//------------------------------------------------------------------

2
src/cryptonote_core/blockchain.h
View file

@ -516,10 +516,12 @@ namespace cryptonote
*
* @param tx_id the hash of the transaction to fetch indices for
* @param indexs return-by-reference the global indices for the transaction's outputs
* @param n_txes how many txes in a row to get results for
*
* @return false if the transaction does not exist, or if no indices are found, otherwise true
*/
bool get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<uint64_t>& indexs) const;
bool get_tx_outputs_gindexs(const crypto::hash& tx_id, size_t n_txes, std::vector<std::vector<uint64_t>>& indexs) const;
/**
* @brief stores the blockchain

5
src/cryptonote_core/cryptonote_core.cpp
View file

@ -1220,6 +1220,11 @@ namespace cryptonote
return m_blockchain_storage.get_tx_outputs_gindexs(tx_id, indexs);
}
//-----------------------------------------------------------------------------------------------
bool core::get_tx_outputs_gindexs(const crypto::hash& tx_id, size_t n_txes, std::vector<std::vector<uint64_t>>& indexs) const
{
return m_blockchain_storage.get_tx_outputs_gindexs(tx_id, n_txes, indexs);
}
//-----------------------------------------------------------------------------------------------
void core::pause_mine()
{
m_miner.pause();

1
src/cryptonote_core/cryptonote_core.h
View file

@ -534,6 +534,7 @@ namespace cryptonote
* @note see Blockchain::get_tx_outputs_gindexs
*/
bool get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<uint64_t>& indexs) const;
bool get_tx_outputs_gindexs(const crypto::hash& tx_id, size_t n_txes, std::vector<std::vector<uint64_t>>& indexs) const;
/**
* @copydoc Blockchain::get_tail_id