diff options
Diffstat (limited to 'src/cryptonote_core/blockchain.cpp')
| -rw-r--r-- | src/cryptonote_core/blockchain.cpp | 139 |
1 files changed, 118 insertions, 21 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp index 41357e72e..8b295e304 100644 --- a/src/cryptonote_core/blockchain.cpp +++ b/src/cryptonote_core/blockchain.cpp @@ -166,6 +166,8 @@ static const struct { Blockchain::Blockchain(tx_memory_pool& tx_pool) : m_db(), m_tx_pool(tx_pool), m_hardfork(NULL), m_timestamps_and_difficulties_height(0), m_current_block_cumul_weight_limit(0), m_current_block_cumul_weight_median(0), m_enforce_dns_checkpoints(false), m_max_prepare_blocks_threads(4), m_db_sync_on_blocks(true), m_db_sync_threshold(1), m_db_sync_mode(db_async), m_db_default_sync(false), m_fast_sync(true), m_show_time_stats(false), m_sync_counter(0), m_bytes_to_sync(0), m_cancel(false), + m_long_term_block_weights_window(CRYPTONOTE_LONG_TERM_BLOCK_WEIGHT_WINDOW_SIZE), + m_long_term_effective_median_block_weight(0), m_difficulty_for_next_block_top_hash(crypto::null_hash), m_difficulty_for_next_block(1), m_btc_valid(false) @@ -500,7 +502,11 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline m_tx_pool.on_blockchain_dec(m_db->height()-1, get_tail_id()); } - update_next_cumulative_weight_limit(); + if (test_options && test_options->long_term_block_weight_window) + m_long_term_block_weights_window = test_options->long_term_block_weight_window; + + if (!update_next_cumulative_weight_limit()) + return false; return true; } //------------------------------------------------------------------ @@ -685,7 +691,7 @@ block Blockchain::pop_block_from_blockchain() m_blocks_txs_check.clear(); m_check_txin_table.clear(); - update_next_cumulative_weight_limit(); + CHECK_AND_ASSERT_THROW_MES(update_next_cumulative_weight_limit(), "Error updating next cumulative weight limit"); m_tx_pool.on_blockchain_dec(m_db->height()-1, get_tail_id()); invalidate_block_template_cache(); @@ -704,7 +710,8 @@ bool Blockchain::reset_and_set_genesis_block(const block& b) block_verification_context bvc = boost::value_initialized<block_verification_context>(); add_new_block(b, bvc); - update_next_cumulative_weight_limit(); + if (!update_next_cumulative_weight_limit()) + return false; return bvc.m_added_to_main_chain && !bvc.m_verifivation_failed; } //------------------------------------------------------------------ @@ -1202,7 +1209,7 @@ bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_bl } } - std::vector<size_t> last_blocks_weights; + std::vector<uint64_t> last_blocks_weights; get_last_n_blocks_weights(last_blocks_weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW); if (!get_block_reward(epee::misc_utils::median(last_blocks_weights), cumulative_block_weight, already_generated_coins, base_reward, version)) { @@ -1237,7 +1244,7 @@ bool Blockchain::validate_miner_transaction(const block& b, size_t cumulative_bl } //------------------------------------------------------------------ // get the block weights of the last <count> blocks, and return by reference <sz>. -void Blockchain::get_last_n_blocks_weights(std::vector<size_t>& weights, size_t count) const +void Blockchain::get_last_n_blocks_weights(std::vector<uint64_t>& weights, size_t count) const { LOG_PRINT_L3("Blockchain::" << __func__); CRITICAL_REGION_LOCAL(m_blockchain_lock); @@ -3083,6 +3090,7 @@ uint64_t Blockchain::get_dynamic_base_fee(uint64_t block_reward, size_t median_b bool Blockchain::check_fee(size_t tx_weight, uint64_t fee) const { const uint8_t version = get_current_hard_fork_version(); + const uint64_t blockchain_height = m_db->height(); uint64_t median = 0; uint64_t already_generated_coins = 0; @@ -3090,7 +3098,7 @@ bool Blockchain::check_fee(size_t tx_weight, uint64_t fee) const if (version >= HF_VERSION_DYNAMIC_FEE) { median = m_current_block_cumul_weight_limit / 2; - already_generated_coins = m_db->height() ? m_db->get_block_already_generated_coins(m_db->height() - 1) : 0; + already_generated_coins = blockchain_height ? m_db->get_block_already_generated_coins(blockchain_height - 1) : 0; if (!get_block_reward(median, 1, already_generated_coins, base_reward, version)) return false; } @@ -3098,7 +3106,8 @@ bool Blockchain::check_fee(size_t tx_weight, uint64_t fee) const uint64_t needed_fee; if (version >= HF_VERSION_PER_BYTE_FEE) { - uint64_t fee_per_byte = get_dynamic_base_fee(base_reward, median, version); + const bool use_long_term_median_in_fee = version >= HF_VERSION_LONG_TERM_BLOCK_WEIGHT; + uint64_t fee_per_byte = get_dynamic_base_fee(base_reward, use_long_term_median_in_fee ? m_long_term_effective_median_block_weight : median, version); MDEBUG("Using " << print_money(fee_per_byte) << "/byte fee"); needed_fee = tx_weight * fee_per_byte; // quantize fee up to 8 decimals @@ -3135,6 +3144,7 @@ bool Blockchain::check_fee(size_t tx_weight, uint64_t fee) const uint64_t Blockchain::get_dynamic_base_fee_estimate(uint64_t grace_blocks) const { const uint8_t version = get_current_hard_fork_version(); + const uint64_t db_height = m_db->height(); if (version < HF_VERSION_DYNAMIC_FEE) return FEE_PER_KB; @@ -3143,7 +3153,7 @@ uint64_t Blockchain::get_dynamic_base_fee_estimate(uint64_t grace_blocks) const grace_blocks = CRYPTONOTE_REWARD_BLOCKS_WINDOW - 1; const uint64_t min_block_weight = get_min_block_weight(version); - std::vector<size_t> weights; + std::vector<uint64_t> weights; get_last_n_blocks_weights(weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW - grace_blocks); weights.reserve(grace_blocks); for (size_t i = 0; i < grace_blocks; ++i) @@ -3153,7 +3163,7 @@ uint64_t Blockchain::get_dynamic_base_fee_estimate(uint64_t grace_blocks) const if(median <= min_block_weight) median = min_block_weight; - uint64_t already_generated_coins = m_db->height() ? m_db->get_block_already_generated_coins(m_db->height() - 1) : 0; + uint64_t already_generated_coins = db_height ? m_db->get_block_already_generated_coins(db_height - 1) : 0; uint64_t base_reward; if (!get_block_reward(median, 1, already_generated_coins, base_reward, version)) { @@ -3161,7 +3171,8 @@ uint64_t Blockchain::get_dynamic_base_fee_estimate(uint64_t grace_blocks) const base_reward = BLOCK_REWARD_OVERESTIMATE; } - uint64_t fee = get_dynamic_base_fee(base_reward, median, version); + const bool use_long_term_median_in_fee = version >= HF_VERSION_LONG_TERM_BLOCK_WEIGHT; + uint64_t fee = get_dynamic_base_fee(base_reward, use_long_term_median_in_fee ? m_long_term_effective_median_block_weight : median, version); const bool per_byte = version < HF_VERSION_PER_BYTE_FEE; MDEBUG("Estimating " << grace_blocks << "-block fee at " << print_money(fee) << "/" << (per_byte ? "byte" : "kB")); return fee; @@ -3658,7 +3669,8 @@ leave: { try { - new_height = m_db->add_block(bl, block_weight, cumulative_difficulty, already_generated_coins, txs); + uint64_t long_term_block_weight = get_next_long_term_block_weight(block_weight); + new_height = m_db->add_block(bl, block_weight, long_term_block_weight, cumulative_difficulty, already_generated_coins, txs); } catch (const KEY_IMAGE_EXISTS& e) { @@ -3684,7 +3696,12 @@ leave: TIME_MEASURE_FINISH(addblock); // do this after updating the hard fork state since the weight limit may change due to fork - update_next_cumulative_weight_limit(); + if (!update_next_cumulative_weight_limit()) + { + MERROR("Failed to update next cumulative weight limit"); + pop_block_from_blockchain(); + return false; + } MINFO("+++++ BLOCK SUCCESSFULLY ADDED" << std::endl << "id:\t" << id << std::endl << "PoW:\t" << proof_of_work << std::endl << "HEIGHT " << new_height-1 << ", difficulty:\t" << current_diffic << std::endl << "block reward: " << print_money(fee_summary + base_reward) << "(" << print_money(base_reward) << " + " << print_money(fee_summary) << "), coinbase_weight: " << coinbase_weight << ", cumulative weight: " << cumulative_block_weight << ", " << block_processing_time << "(" << target_calculating_time << "/" << longhash_calculating_time << ")ms"); if(m_show_time_stats) @@ -3740,20 +3757,100 @@ bool Blockchain::check_blockchain_pruning() return m_db->check_pruning(); } //------------------------------------------------------------------ -bool Blockchain::update_next_cumulative_weight_limit() +uint64_t Blockchain::get_next_long_term_block_weight(uint64_t block_weight) const { - uint64_t full_reward_zone = get_min_block_weight(get_current_hard_fork_version()); + PERF_TIMER(get_next_long_term_block_weight); + + const uint64_t db_height = m_db->height(); + const uint64_t nblocks = std::min<uint64_t>(m_long_term_block_weights_window, db_height); + + const uint8_t hf_version = get_current_hard_fork_version(); + if (hf_version < HF_VERSION_LONG_TERM_BLOCK_WEIGHT) + 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); + 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); + + uint64_t short_term_constraint = long_term_effective_median_block_weight + long_term_effective_median_block_weight * 2 / 5; + uint64_t long_term_block_weight = std::min<uint64_t>(block_weight, short_term_constraint); + + return long_term_block_weight; +} +//------------------------------------------------------------------ +bool Blockchain::update_next_cumulative_weight_limit(uint64_t *long_term_effective_median_block_weight) +{ + PERF_TIMER(update_next_cumulative_weight_limit); LOG_PRINT_L3("Blockchain::" << __func__); - std::vector<size_t> weights; - get_last_n_blocks_weights(weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW); - uint64_t median = epee::misc_utils::median(weights); - m_current_block_cumul_weight_median = median; - if(median <= full_reward_zone) - median = full_reward_zone; + // when we reach this, the last hf version is not yet written to the db + const uint64_t db_height = m_db->height(); + const uint8_t hf_version = get_current_hard_fork_version(); + uint64_t full_reward_zone = get_min_block_weight(hf_version); + uint64_t long_term_block_weight; + + if (hf_version < HF_VERSION_LONG_TERM_BLOCK_WEIGHT) + { + std::vector<uint64_t> weights; + get_last_n_blocks_weights(weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW); + m_current_block_cumul_weight_median = epee::misc_utils::median(weights); + long_term_block_weight = weights.back(); + } + else + { + const uint64_t block_weight = m_db->get_block_weight(db_height - 1); + + std::vector<uint64_t> weights, new_weights; + uint64_t long_term_median; + if (db_height == 1) + { + long_term_median = CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5; + } + else + { + 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); + new_weights = weights; + long_term_median = epee::misc_utils::median(weights); + } + + m_long_term_effective_median_block_weight = std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, long_term_median); + + uint64_t short_term_constraint = m_long_term_effective_median_block_weight + m_long_term_effective_median_block_weight * 2 / 5; + long_term_block_weight = std::min<uint64_t>(block_weight, short_term_constraint); + + if (new_weights.empty()) + new_weights.resize(1); + new_weights[0] = long_term_block_weight; + long_term_median = epee::misc_utils::median(new_weights); + m_long_term_effective_median_block_weight = std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, long_term_median); + short_term_constraint = m_long_term_effective_median_block_weight + m_long_term_effective_median_block_weight * 2 / 5; + + weights.clear(); + get_last_n_blocks_weights(weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW); + + uint64_t short_term_median = epee::misc_utils::median(weights); + uint64_t effective_median_block_weight = std::min<uint64_t>(std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, short_term_median), CRYPTONOTE_SHORT_TERM_BLOCK_WEIGHT_SURGE_FACTOR * m_long_term_effective_median_block_weight); + + m_current_block_cumul_weight_median = effective_median_block_weight; + } + + if (m_current_block_cumul_weight_median <= full_reward_zone) + m_current_block_cumul_weight_median = full_reward_zone; + + m_current_block_cumul_weight_limit = m_current_block_cumul_weight_median * 2; + + if (long_term_effective_median_block_weight) + *long_term_effective_median_block_weight = m_long_term_effective_median_block_weight; - m_current_block_cumul_weight_limit = median*2; return true; } //------------------------------------------------------------------ |