diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cryptonote_core/blockchain.cpp | 44 | ||||
| -rw-r--r-- | src/cryptonote_core/blockchain.h | 21 | ||||
| -rw-r--r-- | src/cryptonote_core/tx_pool.cpp | 22 | ||||
| -rw-r--r-- | src/cryptonote_core/tx_pool.h | 9 |
4 files changed, 94 insertions, 2 deletions
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp index 87ef47c11..4f1b028a1 100644 --- a/src/cryptonote_core/blockchain.cpp +++ b/src/cryptonote_core/blockchain.cpp @@ -158,7 +158,8 @@ 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_sz_limit(0), m_current_block_cumul_sz_median(0), m_enforce_dns_checkpoints(false), m_max_prepare_blocks_threads(4), m_db_blocks_per_sync(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_cancel(false), m_difficulty_for_next_block_top_hash(crypto::null_hash), - m_difficulty_for_next_block(1) + m_difficulty_for_next_block(1), + m_btc_valid(false) { LOG_PRINT_L3("Blockchain::" << __func__); } @@ -632,6 +633,7 @@ block Blockchain::pop_block_from_blockchain() update_next_cumulative_size_limit(); m_tx_pool.on_blockchain_dec(m_db->height()-1, get_tail_id()); + invalidate_block_template_cache(); return popped_block; } @@ -642,6 +644,7 @@ bool Blockchain::reset_and_set_genesis_block(const block& b) CRITICAL_REGION_LOCAL(m_blockchain_lock); m_timestamps_and_difficulties_height = 0; m_alternative_chains.clear(); + invalidate_block_template_cache(); m_db->reset(); m_hardfork->init(); @@ -1212,9 +1215,26 @@ bool Blockchain::create_block_template(block& b, const account_public_address& m LOG_PRINT_L3("Blockchain::" << __func__); size_t median_size; uint64_t already_generated_coins; + uint64_t pool_cookie; CRITICAL_REGION_BEGIN(m_blockchain_lock); height = m_db->height(); + if (m_btc_valid) { + // The pool cookie is atomic. The lack of locking is OK, as if it changes + // just as we compare it, we'll just use a slightly old template, but + // this would be the case anyway if we'd lock, and the change happened + // just after the block template was created + if (!memcmp(&miner_address, &m_btc_address, sizeof(cryptonote::account_public_address)) && m_btc_nonce == ex_nonce && m_btc_pool_cookie == m_tx_pool.cookie()) { + MDEBUG("Using cached template"); + m_btc.timestamp = time(NULL); // update timestamp unconditionally + b = m_btc; + diffic = m_btc_difficulty; + expected_reward = m_btc_expected_reward; + return true; + } + MDEBUG("Not using cached template: address " << (!memcmp(&miner_address, &m_btc_address, sizeof(cryptonote::account_public_address))) << ", nonce " << (m_btc_nonce == ex_nonce) << ", cookie " << (m_btc_pool_cookie == m_tx_pool.cookie())); + invalidate_block_template_cache(); + } b.major_version = m_hardfork->get_current_version(); b.minor_version = m_hardfork->get_ideal_version(); @@ -1241,6 +1261,7 @@ bool Blockchain::create_block_template(block& b, const account_public_address& m { return false; } + pool_cookie = m_tx_pool.cookie(); #if defined(DEBUG_CREATE_BLOCK_TEMPLATE) size_t real_txs_size = 0; uint64_t real_fee = 0; @@ -1355,6 +1376,8 @@ bool Blockchain::create_block_template(block& b, const account_public_address& m MDEBUG("Creating block template: miner tx size " << coinbase_blob_size << ", cumulative size " << cumulative_size << " is now good"); #endif + + cache_block_template(b, miner_address, ex_nonce, diffic, expected_reward, pool_cookie); return true; } LOG_ERROR("Failed to create_block_template with " << 10 << " tries"); @@ -3697,6 +3720,7 @@ leave: // appears to be a NOP *and* is called elsewhere. wat? m_tx_pool.on_blockchain_inc(new_height, id); get_difficulty_for_next_block(); // just to cache it + invalidate_block_template_cache(); return true; } @@ -4666,6 +4690,24 @@ bool Blockchain::for_all_outputs(uint64_t amount, std::function<bool(uint64_t he return m_db->for_all_outputs(amount, f);; } +void Blockchain::invalidate_block_template_cache() +{ + MDEBUG("Invalidating block template cache"); + m_btc_valid = false; +} + +void Blockchain::cache_block_template(const block &b, const cryptonote::account_public_address &address, const blobdata &nonce, const difficulty_type &diff, uint64_t expected_reward, uint64_t pool_cookie) +{ + MDEBUG("Setting block template cache"); + m_btc = b; + m_btc_address = address; + m_btc_nonce = nonce; + m_btc_difficulty = diff; + m_btc_expected_reward = expected_reward; + m_btc_pool_cookie = pool_cookie; + m_btc_valid = true; +} + namespace cryptonote { template bool Blockchain::get_transactions(const std::vector<crypto::hash>&, std::vector<transaction>&, std::vector<crypto::hash>&) const; template bool Blockchain::get_transactions_blobs(const std::vector<crypto::hash>&, std::vector<cryptonote::blobdata>&, std::vector<crypto::hash>&, bool) const; diff --git a/src/cryptonote_core/blockchain.h b/src/cryptonote_core/blockchain.h index d95c8ed15..238867c18 100644 --- a/src/cryptonote_core/blockchain.h +++ b/src/cryptonote_core/blockchain.h @@ -1052,6 +1052,15 @@ namespace cryptonote std::atomic<bool> m_cancel; + // block template cache + block m_btc; + account_public_address m_btc_address; + blobdata m_btc_nonce; + difficulty_type m_btc_difficulty; + uint64_t m_btc_pool_cookie; + uint64_t m_btc_expected_reward; + bool m_btc_valid; + /** * @brief collects the keys for all outputs being "spent" as an input * @@ -1407,5 +1416,17 @@ namespace cryptonote * that implicit data. */ bool expand_transaction_2(transaction &tx, const crypto::hash &tx_prefix_hash, const std::vector<std::vector<rct::ctkey>> &pubkeys); + + /** + * @brief invalidates any cached block template + */ + void invalidate_block_template_cache(); + + /** + * @brief stores a new cached block template + * + * At some point, may be used to push an update to miners + */ + void cache_block_template(const block &b, const cryptonote::account_public_address &address, const blobdata &nonce, const difficulty_type &diff, uint64_t expected_reward, uint64_t pool_cookie); }; } // namespace cryptonote diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp index eac0f1f57..5807867d9 100644 --- a/src/cryptonote_core/tx_pool.cpp +++ b/src/cryptonote_core/tx_pool.cpp @@ -102,7 +102,7 @@ namespace cryptonote } //--------------------------------------------------------------------------------- //--------------------------------------------------------------------------------- - tx_memory_pool::tx_memory_pool(Blockchain& bchs): m_blockchain(bchs), m_txpool_max_size(DEFAULT_TXPOOL_MAX_SIZE), m_txpool_size(0) + tx_memory_pool::tx_memory_pool(Blockchain& bchs): m_blockchain(bchs), m_txpool_max_size(DEFAULT_TXPOOL_MAX_SIZE), m_txpool_size(0), m_cookie(0) { } @@ -306,6 +306,8 @@ namespace cryptonote tvc.m_verifivation_failed = false; m_txpool_size += blob_size; + ++m_cookie; + MINFO("Transaction added to pool: txid " << id << " bytes: " << blob_size << " fee/byte: " << (fee / (double)blob_size)); prune(m_txpool_max_size); @@ -341,6 +343,7 @@ namespace cryptonote bytes = m_txpool_max_size; CRITICAL_REGION_LOCAL1(m_blockchain); LockedTXN lock(m_blockchain); + bool changed = false; // this will never remove the first one, but we don't care auto it = --m_txs_by_fee_and_receive_time.end(); @@ -377,6 +380,7 @@ namespace cryptonote remove_transaction_keyimages(tx); MINFO("Pruned tx " << txid << " from txpool: size: " << it->first.second << ", fee/byte: " << it->first.first); m_txs_by_fee_and_receive_time.erase(it--); + changed = true; } catch (const std::exception &e) { @@ -384,6 +388,8 @@ namespace cryptonote return; } } + if (changed) + ++m_cookie; if (m_txpool_size > bytes) MINFO("Pool size after pruning is larger than limit: " << m_txpool_size << "/" << bytes); } @@ -401,6 +407,7 @@ namespace cryptonote auto ins_res = kei_image_set.insert(id); CHECK_AND_ASSERT_MES(ins_res.second, false, "internal error: try to insert duplicate iterator in key_image set"); } + ++m_cookie; return true; } //--------------------------------------------------------------------------------- @@ -435,6 +442,7 @@ namespace cryptonote } } + ++m_cookie; return true; } //--------------------------------------------------------------------------------- @@ -480,6 +488,7 @@ namespace cryptonote } m_txs_by_fee_and_receive_time.erase(sorted_it); + ++m_cookie; return true; } //--------------------------------------------------------------------------------- @@ -553,6 +562,7 @@ namespace cryptonote // ignore error } } + ++m_cookie; } return true; } @@ -1051,6 +1061,7 @@ namespace cryptonote { CRITICAL_REGION_LOCAL(m_transactions_lock); CRITICAL_REGION_LOCAL1(m_blockchain); + bool changed = false; LockedTXN lock(m_blockchain); for(size_t i = 0; i!= tx.vin.size(); i++) { @@ -1071,6 +1082,7 @@ namespace cryptonote { MDEBUG("Marking " << txid << " as double spending " << itk.k_image); meta.double_spend_seen = true; + changed = true; try { m_blockchain.update_txpool_tx(txid, meta); @@ -1084,6 +1096,8 @@ namespace cryptonote } } } + if (changed) + ++m_cookie; } //--------------------------------------------------------------------------------- std::string tx_memory_pool::print_pool(bool short_format) const @@ -1305,6 +1319,8 @@ namespace cryptonote } } } + if (n_removed > 0) + ++m_cookie; return n_removed; } //--------------------------------------------------------------------------------- @@ -1361,6 +1377,10 @@ namespace cryptonote } } } + + m_cookie = 0; + + // Ignore deserialization error return true; } diff --git a/src/cryptonote_core/tx_pool.h b/src/cryptonote_core/tx_pool.h index 4ade7ddbe..4abfef85c 100644 --- a/src/cryptonote_core/tx_pool.h +++ b/src/cryptonote_core/tx_pool.h @@ -362,6 +362,13 @@ namespace cryptonote */ size_t validate(uint8_t version); + /** + * @brief return the cookie + * + * @return the cookie + */ + uint64_t cookie() const { return m_cookie; } + /** * @brief get the cumulative txpool size in bytes * @@ -549,6 +556,8 @@ private: //!< container for transactions organized by fee per size and receive time sorted_tx_container m_txs_by_fee_and_receive_time; + std::atomic<uint64_t> m_cookie; //!< incremented at each change + /** * @brief get an iterator to a transaction in the sorted container * |