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blockchain: speed up getting N blocks weights/long term weights

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This commit is contained in:
moneromooo-monero
2019-02-21 00:13:21 +00:00
parent 49afbd0c53
commit 4b21d38dfd
8 changed files with 142 additions and 15 deletions
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24
src/cryptonote_core/blockchain.cpp
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@@ -1269,15 +1269,17 @@ void Blockchain::get_last_n_blocks_weights(std::vector<uint64_t>& weights, size_
if(h == 0)
return;
m_db->block_txn_start(true);
// add weight of last <count> blocks to vector <weights> (or less, if blockchain size < count)
size_t start_offset = h - std::min<size_t>(h, count);
weights.reserve(weights.size() + h - start_offset);
for(size_t i = start_offset; i < h; i++)
{
weights.push_back(m_db->get_block_weight(i));
}
m_db->block_txn_stop();
weights = m_db->get_block_weights(start_offset, count);
}
//------------------------------------------------------------------
void Blockchain::get_long_term_block_weights(std::vector<uint64_t>& weights, uint64_t start_height, size_t count) const
{
LOG_PRINT_L3("Blockchain::" << __func__);
CRITICAL_REGION_LOCAL(m_blockchain_lock);
weights = m_db->get_long_term_block_weights(start_height, count);
}
//------------------------------------------------------------------
uint64_t Blockchain::get_current_cumulative_block_weight_limit() const
@@ -3804,9 +3806,7 @@ uint64_t Blockchain::get_next_long_term_block_weight(uint64_t block_weight) cons
return block_weight;
std::vector<uint64_t> weights;
weights.resize(nblocks);
for (uint64_t h = 0; h < nblocks; ++h)
weights[h] = m_db->get_block_long_term_weight(db_height - nblocks + h);
get_long_term_block_weights(weights, db_height - nblocks, nblocks);
uint64_t long_term_median = epee::misc_utils::median(weights);
uint64_t long_term_effective_median_block_weight = std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, long_term_median);
@@ -3850,9 +3850,7 @@ bool Blockchain::update_next_cumulative_weight_limit(uint64_t *long_term_effecti
uint64_t nblocks = std::min<uint64_t>(m_long_term_block_weights_window, db_height);
if (nblocks == db_height)
--nblocks;
weights.resize(nblocks);
for (uint64_t h = 0; h < nblocks; ++h)
weights[h] = m_db->get_block_long_term_weight(db_height - nblocks + h - 1);
get_long_term_block_weights(weights, db_height - nblocks - 1, nblocks);
new_weights = weights;
long_term_median = epee::misc_utils::median(weights);
}