Merge pull request #3716

a2b557f 6795bd0 209ec96 ed2c81e a830db2 57ea902 31a895e ba8331c f7f1917 41be339 f025ae9 ef2cb63 dcfd299 5d3e702 2704624 2771a18 0e4c7d0 (moneromooo-monero)

6 files changed, 140 insertions, 104 deletions

diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 78f61766f..1eda2cbb0 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -242,6 +242,7 @@ bool Blockchain::scan_outputkeys_for_indexes(size_t tx_version, const txin_to_ke
       MDEBUG("Additional outputs needed: " << absolute_offsets.size() - outputs.size());
       std::vector < uint64_t > add_offsets;
       std::vector<output_data_t> add_outputs;
+      add_outputs.reserve(absolute_offsets.size() - outputs.size());
       for (size_t i = outputs.size(); i < absolute_offsets.size(); i++)
         add_offsets.push_back(absolute_offsets[i]);
       try
@@ -850,6 +851,11 @@ difficulty_type Blockchain::get_difficulty_for_next_block()
 
     timestamps.clear();
     difficulties.clear();
+    if (height > offset)
+    {
+      timestamps.reserve(height - offset);
+      difficulties.reserve(height - offset);
+    }
     for (; offset < height; offset++)
     {
       timestamps.push_back(m_db->get_block_timestamp(offset));
@@ -1170,6 +1176,7 @@ void Blockchain::get_last_n_blocks_sizes(std::vector<size_t>& sz, size_t count)
   m_db->block_txn_start(true);
   // add size of last <count> blocks to vector <sz> (or less, if blockchain size < count)
   size_t start_offset = h - std::min<size_t>(h, count);
+  sz.reserve(sz.size() + h - start_offset);
   for(size_t i = start_offset; i < h; i++)
   {
     sz.push_back(m_db->get_block_size(i));
@@ -1367,6 +1374,7 @@ bool Blockchain::complete_timestamps_vector(uint64_t start_top_height, std::vect
   size_t need_elements = BLOCKCHAIN_TIMESTAMP_CHECK_WINDOW - timestamps.size();
   CHECK_AND_ASSERT_MES(start_top_height < m_db->height(), false, "internal error: passed start_height not < " << " m_db->height() -- " << start_top_height << " >= " << m_db->height());
   size_t stop_offset = start_top_height > need_elements ? start_top_height - need_elements : 0;
+  timestamps.reserve(timestamps.size() + start_top_height - stop_offset);
   while (start_top_height != stop_offset)
   {
     timestamps.push_back(m_db->get_block_timestamp(start_top_height));
@@ -1566,7 +1574,7 @@ bool Blockchain::handle_alternative_block(const block& b, const crypto::hash& id
   return true;
 }
 //------------------------------------------------------------------
-bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks, std::list<cryptonote::blobdata>& txs) const
+bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks, std::vector<cryptonote::blobdata>& txs) const
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
@@ -1580,7 +1588,7 @@ bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::list<std::
 
   for(const auto& blk : blocks)
   {
-    std::list<crypto::hash> missed_ids;
+    std::vector<crypto::hash> missed_ids;
     get_transactions_blobs(blk.second.tx_hashes, txs, missed_ids);
     CHECK_AND_ASSERT_MES(!missed_ids.size(), false, "has missed transactions in own block in main blockchain");
   }
@@ -1588,14 +1596,16 @@ bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::list<std::
   return true;
 }
 //------------------------------------------------------------------
-bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks) const
+bool Blockchain::get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks) const
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
-  if(start_offset >= m_db->height())
+  const uint64_t height = m_db->height();
+  if(start_offset >= height)
     return false;
 
-  for(size_t i = start_offset; i < start_offset + count && i < m_db->height();i++)
+  blocks.reserve(blocks.size() + height - start_offset);
+  for(size_t i = start_offset; i < start_offset + count && i < height;i++)
   {
     blocks.push_back(std::make_pair(m_db->get_block_blob_from_height(i), block()));
     if (!parse_and_validate_block_from_blob(blocks.back().first, blocks.back().second))
@@ -1620,17 +1630,20 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
   m_db->block_txn_start(true);
   rsp.current_blockchain_height = get_current_blockchain_height();
-  std::list<std::pair<cryptonote::blobdata,block>> blocks;
+  std::vector<std::pair<cryptonote::blobdata,block>> blocks;
   get_blocks(arg.blocks, blocks, rsp.missed_ids);
 
-  for (const auto& bl: blocks)
+  for (auto& bl: blocks)
   {
-    std::list<crypto::hash> missed_tx_ids;
-    std::list<cryptonote::blobdata> txs;
+    std::vector<crypto::hash> missed_tx_ids;
+    std::vector<cryptonote::blobdata> txs;
+
+    rsp.blocks.push_back(block_complete_entry());
+    block_complete_entry& e = rsp.blocks.back();
 
     // FIXME: s/rsp.missed_ids/missed_tx_id/ ?  Seems like rsp.missed_ids
     //        is for missed blocks, not missed transactions as well.
-    get_transactions_blobs(bl.second.tx_hashes, txs, missed_tx_ids);
+    get_transactions_blobs(bl.second.tx_hashes, e.txs, missed_tx_ids);
 
     if (missed_tx_ids.size() != 0)
     {
@@ -1642,35 +1655,28 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
       // append missed transaction hashes to response missed_ids field,
       // as done below if any standalone transactions were requested
       // and missed.
-      rsp.missed_ids.splice(rsp.missed_ids.end(), missed_tx_ids);
-	  m_db->block_txn_stop();
+      rsp.missed_ids.insert(rsp.missed_ids.end(), missed_tx_ids.begin(), missed_tx_ids.end());
+      m_db->block_txn_stop();
       return false;
     }
 
-    rsp.blocks.push_back(block_complete_entry());
-    block_complete_entry& e = rsp.blocks.back();
     //pack block
-    e.block = bl.first;
-    //pack transactions
-    for (const cryptonote::blobdata& tx: txs)
-      e.txs.push_back(tx);
-  }
-  //get another transactions, if need
-  std::list<cryptonote::blobdata> txs;
-  get_transactions_blobs(arg.txs, txs, rsp.missed_ids);
-  //pack aside transactions
-  for (const auto& tx: txs)
-    rsp.txs.push_back(tx);
+    e.block = std::move(bl.first);
+  }
+  //get and pack other transactions, if needed
+  std::vector<cryptonote::blobdata> txs;
+  get_transactions_blobs(arg.txs, rsp.txs, rsp.missed_ids);
 
   m_db->block_txn_stop();
   return true;
 }
 //------------------------------------------------------------------
-bool Blockchain::get_alternative_blocks(std::list<block>& blocks) const
+bool Blockchain::get_alternative_blocks(std::vector<block>& blocks) const
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
 
+  blocks.reserve(m_alternative_chains.size());
   for (const auto& alt_bl: m_alternative_chains)
   {
     blocks.push_back(alt_bl.second.bl);
@@ -2090,6 +2096,9 @@ uint64_t Blockchain::block_difficulty(uint64_t i) const
   return 0;
 }
 //------------------------------------------------------------------
+template<typename T> void reserve_container(std::vector<T> &v, size_t N) { v.reserve(N); }
+template<typename T> void reserve_container(std::list<T> &v, size_t N) { }
+//------------------------------------------------------------------
 //TODO: return type should be void, throw on exception
 //       alternatively, return true only if no blocks missed
 template<class t_ids_container, class t_blocks_container, class t_missed_container>
@@ -2098,6 +2107,7 @@ bool Blockchain::get_blocks(const t_ids_container& block_ids, t_blocks_container
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
 
+  reserve_container(blocks, block_ids.size());
   for (const auto& block_hash : block_ids)
   {
     try
@@ -2132,6 +2142,7 @@ bool Blockchain::get_transactions_blobs(const t_ids_container& txs_ids, t_tx_con
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
 
+  reserve_container(txs, txs_ids.size());
   for (const auto& tx_hash : txs_ids)
   {
     try
@@ -2158,6 +2169,7 @@ bool Blockchain::get_transactions(const t_ids_container& txs_ids, t_tx_container
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
 
+  reserve_container(txs, txs_ids.size());
   for (const auto& tx_hash : txs_ids)
   {
     try
@@ -2186,7 +2198,7 @@ bool Blockchain::get_transactions(const t_ids_container& txs_ids, t_tx_container
 // Find the split point between us and foreign blockchain and return
 // (by reference) the most recent common block hash along with up to
 // BLOCKS_IDS_SYNCHRONIZING_DEFAULT_COUNT additional (more recent) hashes.
-bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qblock_ids, std::list<crypto::hash>& hashes, uint64_t& start_height, uint64_t& current_height) const
+bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qblock_ids, std::vector<crypto::hash>& hashes, uint64_t& start_height, uint64_t& current_height) const
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
@@ -2200,6 +2212,7 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
   m_db->block_txn_start(true);
   current_height = get_current_blockchain_height();
   size_t count = 0;
+  hashes.reserve(std::max((size_t)(current_height - start_height), (size_t)BLOCKS_IDS_SYNCHRONIZING_DEFAULT_COUNT));
   for(size_t i = start_height; i < current_height && count < BLOCKS_IDS_SYNCHRONIZING_DEFAULT_COUNT; i++, count++)
   {
     hashes.push_back(m_db->get_block_hash_from_height(i));
@@ -2224,7 +2237,7 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
 // find split point between ours and foreign blockchain (or start at
 // blockchain height <req_start_block>), and return up to max_count FULL
 // blocks by reference.
-bool Blockchain::find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, size_t max_count) const
+bool Blockchain::find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata> > > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, bool get_miner_tx_hash, size_t max_count) const
 {
   LOG_PRINT_L3("Blockchain::" << __func__);
   CRITICAL_REGION_LOCAL(m_blockchain_lock);
@@ -2250,18 +2263,28 @@ bool Blockchain::find_blockchain_supplement(const uint64_t req_start_block, cons
   m_db->block_txn_start(true);
   total_height = get_current_blockchain_height();
   size_t count = 0, size = 0;
+  blocks.reserve(std::min(std::min(max_count, (size_t)10000), (size_t)(total_height - start_height)));
   for(size_t i = start_height; i < total_height && count < max_count && (size < FIND_BLOCKCHAIN_SUPPLEMENT_MAX_SIZE || count < 3); i++, count++)
   {
     blocks.resize(blocks.size()+1);
-    blocks.back().first = m_db->get_block_blob_from_height(i);
+    blocks.back().first.first = m_db->get_block_blob_from_height(i);
     block b;
-    CHECK_AND_ASSERT_MES(parse_and_validate_block_from_blob(blocks.back().first, b), false, "internal error, invalid block");
-    std::list<crypto::hash> mis;
-    get_transactions_blobs(b.tx_hashes, blocks.back().second, mis, pruned);
+    CHECK_AND_ASSERT_MES(parse_and_validate_block_from_blob(blocks.back().first.first, b), false, "internal error, invalid block");
+    blocks.back().first.second = get_miner_tx_hash ? cryptonote::get_transaction_hash(b.miner_tx) : crypto::null_hash;
+    std::vector<crypto::hash> mis;
+    std::vector<cryptonote::blobdata> txs;
+    get_transactions_blobs(b.tx_hashes, txs, mis, pruned);
     CHECK_AND_ASSERT_MES(!mis.size(), false, "internal error, transaction from block not found");
-    size += blocks.back().first.size();
-    for (const auto &t: blocks.back().second)
+    size += blocks.back().first.first.size();
+    for (const auto &t: txs)
       size += t.size();
+
+    CHECK_AND_ASSERT_MES(txs.size() == b.tx_hashes.size(), false, "mismatched sizes of b.tx_hashes and txs");
+    blocks.back().second.reserve(txs.size());
+    for (size_t i = 0; i < txs.size(); ++i)
+    {
+      blocks.back().second.push_back(std::make_pair(b.tx_hashes[i], std::move(txs[i])));
+    }
   }
   m_db->block_txn_stop();
   return true;
@@ -2795,7 +2818,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
       {
         // ND: Speedup
         // 1. Thread ring signature verification if possible.
-        tpool.submit(&waiter, boost::bind(&Blockchain::check_ring_signature, this, std::cref(tx_prefix_hash), std::cref(in_to_key.k_image), std::cref(pubkeys[sig_index]), std::cref(tx.signatures[sig_index]), std::ref(results[sig_index])));
+        tpool.submit(&waiter, boost::bind(&Blockchain::check_ring_signature, this, std::cref(tx_prefix_hash), std::cref(in_to_key.k_image), std::cref(pubkeys[sig_index]), std::cref(tx.signatures[sig_index]), std::ref(results[sig_index])), true);
       }
       else
       {
@@ -2819,7 +2842,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
     sig_index++;
   }
   if (tx.version == 1 && threads > 1)
-    waiter.wait();
+    waiter.wait(&tpool);
 
   if (tx.version == 1)
   {
@@ -2991,6 +3014,7 @@ bool Blockchain::check_tx_inputs(transaction& tx, tx_verification_context &tvc,
 void Blockchain::check_ring_signature(const crypto::hash &tx_prefix_hash, const crypto::key_image &key_image, const std::vector<rct::ctkey> &pubkeys, const std::vector<crypto::signature>& sig, uint64_t &result)
 {
   std::vector<const crypto::public_key *> p_output_keys;
+  p_output_keys.reserve(pubkeys.size());
   for (auto &key : pubkeys)
   {
     // rct::key and crypto::public_key have the same structure, avoid object ctor/memcpy
@@ -3087,6 +3111,7 @@ uint64_t Blockchain::get_dynamic_per_kb_fee_estimate(uint64_t grace_blocks) cons
   const uint64_t min_block_size = get_min_block_size(version);
   std::vector<size_t> sz;
   get_last_n_blocks_sizes(sz, CRYPTONOTE_REWARD_BLOCKS_WINDOW - grace_blocks);
+  sz.reserve(grace_blocks);
   for (size_t i = 0; i < grace_blocks; ++i)
     sz.push_back(min_block_size);
 
@@ -3244,6 +3269,7 @@ bool Blockchain::check_block_timestamp(const block& b, uint64_t& median_ts) cons
 
   // need most recent 60 blocks, get index of first of those
   size_t offset = h - BLOCKCHAIN_TIMESTAMP_CHECK_WINDOW;
+  timestamps.reserve(h - offset);
   for(;offset < h; ++offset)
   {
     timestamps.push_back(m_db->get_block_timestamp(offset));
@@ -3270,7 +3296,7 @@ void Blockchain::return_tx_to_pool(std::vector<transaction> &txs)
   }
 }
 //------------------------------------------------------------------
-bool Blockchain::flush_txes_from_pool(const std::list<crypto::hash> &txids)
+bool Blockchain::flush_txes_from_pool(const std::vector<crypto::hash> &txids)
 {
   CRITICAL_REGION_LOCAL(m_tx_pool);
 
@@ -3460,6 +3486,7 @@ leave:
   // Iterate over the block's transaction hashes, grabbing each
   // from the tx_pool and validating them.  Each is then added
   // to txs.  Keys spent in each are added to <keys> by the double spend check.
+  txs.reserve(bl.tx_hashes.size());
   for (const crypto::hash& tx_id : bl.tx_hashes)
   {
     transaction tx;
@@ -3873,7 +3900,7 @@ void Blockchain::output_scan_worker(const uint64_t amount, const std::vector<uin
   }
 }
 
-uint64_t Blockchain::prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes)
+uint64_t Blockchain::prevalidate_block_hashes(uint64_t height, const std::vector<crypto::hash> &hashes)
 {
   // new: . . . . . X X X X X . . . . . .
   // pre: A A A A B B B B C C C C D D D D
@@ -3976,7 +4003,7 @@ uint64_t Blockchain::prevalidate_block_hashes(uint64_t height, const std::list<c
 //    vs [k_image, output_keys] (m_scan_table). This is faster because it takes advantage of bulk queries
 //    and is threaded if possible. The table (m_scan_table) will be used later when querying output
 //    keys.
-bool Blockchain::prepare_handle_incoming_blocks(const std::list<block_complete_entry> &blocks_entry)
+bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete_entry> &blocks_entry)
 {
   MTRACE("Blockchain::" << __func__);
   TIME_MEASURE_START(prepare);
@@ -4042,6 +4069,7 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::list<block_complete_e
 
     for (uint64_t i = 0; i < threads; i++)
     {
+      blocks[i].reserve(batches + 1);
       for (int j = 0; j < batches; j++)
       {
         block block;
@@ -4100,11 +4128,11 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::list<block_complete_e
       tools::threadpool::waiter waiter;
       for (uint64_t i = 0; i < threads; i++)
       {
-        tpool.submit(&waiter, boost::bind(&Blockchain::block_longhash_worker, this, thread_height, std::cref(blocks[i]), std::ref(maps[i])));
+        tpool.submit(&waiter, boost::bind(&Blockchain::block_longhash_worker, this, thread_height, std::cref(blocks[i]), std::ref(maps[i])), true);
         thread_height += blocks[i].size();
       }
 
-      waiter.wait();
+      waiter.wait(&tpool);
 
       if (m_cancel)
          return false;
@@ -4239,9 +4267,9 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::list<block_complete_e
     for (size_t i = 0; i < amounts.size(); i++)
     {
       uint64_t amount = amounts[i];
-      tpool.submit(&waiter, boost::bind(&Blockchain::output_scan_worker, this, amount, std::cref(offset_map[amount]), std::ref(tx_map[amount]), std::ref(transactions[i])));
+      tpool.submit(&waiter, boost::bind(&Blockchain::output_scan_worker, this, amount, std::cref(offset_map[amount]), std::ref(tx_map[amount]), std::ref(transactions[i])), true);
     }
-    waiter.wait();
+    waiter.wait(&tpool);
   }
   else
   {
@@ -4505,7 +4533,7 @@ void Blockchain::load_compiled_in_block_hashes()
         // for tx hashes will fail in handle_block_to_main_chain(..)
         CRITICAL_REGION_LOCAL(m_tx_pool);
 
-        std::list<transaction> txs;
+        std::vector<transaction> txs;
         m_tx_pool.get_transactions(txs);
 
         size_t blob_size;
@@ -4568,6 +4596,6 @@ bool Blockchain::for_all_outputs(uint64_t amount, std::function<bool(uint64_t he
 }
 
 namespace cryptonote {
-template bool Blockchain::get_transactions(const std::vector<crypto::hash>&, std::list<transaction>&, std::list<crypto::hash>&) const;
-template bool Blockchain::get_transactions_blobs(const std::vector<crypto::hash>&, std::list<cryptonote::blobdata>&, std::list<crypto::hash>&, bool) const;
+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 ef736d1e7..36d6b8609 100644
--- a/src/cryptonote_core/blockchain.h
+++ b/src/cryptonote_core/blockchain.h
@@ -157,7 +157,7 @@ namespace cryptonote
      *
      * @return false if start_offset > blockchain height, else true
      */
-    bool get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks, std::list<cryptonote::blobdata>& txs) const;
+    bool get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks, std::vector<cryptonote::blobdata>& txs) const;
 
     /**
      * @brief get blocks from blocks based on start height and count
@@ -168,7 +168,7 @@ namespace cryptonote
      *
      * @return false if start_offset > blockchain height, else true
      */
-    bool get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks) const;
+    bool get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks) const;
 
     /**
      * @brief compiles a list of all blocks stored as alternative chains
@@ -177,7 +177,7 @@ namespace cryptonote
      *
      * @return true
      */
-    bool get_alternative_blocks(std::list<block>& blocks) const;
+    bool get_alternative_blocks(std::vector<block>& blocks) const;
 
     /**
      * @brief returns the number of alternative blocks stored
@@ -213,7 +213,7 @@ namespace cryptonote
      *
      * @return false on erroneous blocks, else true
      */
-    bool prepare_handle_incoming_blocks(const std::list<block_complete_entry>  &blocks);
+    bool prepare_handle_incoming_blocks(const std::vector<block_complete_entry>  &blocks);
 
     /**
      * @brief incoming blocks post-processing, cleanup, and disk sync
@@ -373,7 +373,7 @@ namespace cryptonote
      *
      * @return true if a block found in common, else false
      */
-    bool find_blockchain_supplement(const std::list<crypto::hash>& qblock_ids, std::list<crypto::hash>& hashes, uint64_t& start_height, uint64_t& current_height) const;
+    bool find_blockchain_supplement(const std::list<crypto::hash>& qblock_ids, std::vector<crypto::hash>& hashes, uint64_t& start_height, uint64_t& current_height) const;
 
     /**
      * @brief get recent block hashes for a foreign chain
@@ -420,7 +420,7 @@ namespace cryptonote
      *
      * @return true if a block found in common or req_start_block specified, else false
      */
-    bool find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, size_t max_count) const;
+    bool find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata> > > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, bool get_miner_tx_hash, size_t max_count) const;
 
     /**
      * @brief retrieves a set of blocks and their transactions, and possibly other transactions
@@ -829,7 +829,7 @@ namespace cryptonote
      *
      * @return false if any removals fail, otherwise true
      */
-    bool flush_txes_from_pool(const std::list<crypto::hash> &txids);
+    bool flush_txes_from_pool(const std::vector<crypto::hash> &txids);
 
     /**
      * @brief return a histogram of outputs on the blockchain
@@ -952,7 +952,7 @@ namespace cryptonote
 
     bool is_within_compiled_block_hash_area(uint64_t height) const;
     bool is_within_compiled_block_hash_area() const { return is_within_compiled_block_hash_area(m_db->height()); }
-    uint64_t prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes);
+    uint64_t prevalidate_block_hashes(uint64_t height, const std::vector<crypto::hash> &hashes);
 
     void lock();
     void unlock();
diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index 7fc81a87d..910bf0c1f 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -323,19 +323,19 @@ namespace cryptonote
     top_id = m_blockchain_storage.get_tail_id(height);
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks, std::list<cryptonote::blobdata>& txs) const
+  bool core::get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks, std::vector<cryptonote::blobdata>& txs) const
   {
     return m_blockchain_storage.get_blocks(start_offset, count, blocks, txs);
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks) const
+  bool core::get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks) const
   {
     return m_blockchain_storage.get_blocks(start_offset, count, blocks);
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_blocks(uint64_t start_offset, size_t count, std::list<block>& blocks) const
+  bool core::get_blocks(uint64_t start_offset, size_t count, std::vector<block>& blocks) const
   {
-    std::list<std::pair<cryptonote::blobdata, cryptonote::block>> bs;
+    std::vector<std::pair<cryptonote::blobdata, cryptonote::block>> bs;
     if (!m_blockchain_storage.get_blocks(start_offset, count, bs))
       return false;
     for (const auto &b: bs)
@@ -343,7 +343,7 @@ namespace cryptonote
     return true;
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<cryptonote::blobdata>& txs, std::list<crypto::hash>& missed_txs) const
+  bool core::get_transactions(const std::vector<crypto::hash>& txs_ids, std::vector<cryptonote::blobdata>& txs, std::vector<crypto::hash>& missed_txs) const
   {
     return m_blockchain_storage.get_transactions_blobs(txs_ids, txs, missed_txs);
   }
@@ -354,12 +354,12 @@ namespace cryptonote
     return true;
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<transaction>& txs, std::list<crypto::hash>& missed_txs) const
+  bool core::get_transactions(const std::vector<crypto::hash>& txs_ids, std::vector<transaction>& txs, std::vector<crypto::hash>& missed_txs) const
   {
     return m_blockchain_storage.get_transactions(txs_ids, txs, missed_txs);
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_alternative_blocks(std::list<block>& blocks) const
+  bool core::get_alternative_blocks(std::vector<block>& blocks) const
   {
     return m_blockchain_storage.get_alternative_blocks(blocks);
   }
@@ -672,7 +672,7 @@ namespace cryptonote
     return true;
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::handle_incoming_txs(const std::list<blobdata>& tx_blobs, std::vector<tx_verification_context>& tvc, bool keeped_by_block, bool relayed, bool do_not_relay)
+  bool core::handle_incoming_txs(const std::vector<blobdata>& tx_blobs, std::vector<tx_verification_context>& tvc, bool keeped_by_block, bool relayed, bool do_not_relay)
   {
     TRY_ENTRY();
     CRITICAL_REGION_LOCAL(m_incoming_tx_lock);
@@ -683,7 +683,7 @@ namespace cryptonote
     tvc.resize(tx_blobs.size());
     tools::threadpool& tpool = tools::threadpool::getInstance();
     tools::threadpool::waiter waiter;
-    std::list<blobdata>::const_iterator it = tx_blobs.begin();
+    std::vector<blobdata>::const_iterator it = tx_blobs.begin();
     for (size_t i = 0; i < tx_blobs.size(); i++, ++it) {
       tpool.submit(&waiter, [&, i, it] {
         try
@@ -697,7 +697,7 @@ namespace cryptonote
         }
       });
     }
-    waiter.wait();
+    waiter.wait(&tpool);
     it = tx_blobs.begin();
     for (size_t i = 0; i < tx_blobs.size(); i++, ++it) {
       if (!results[i].res)
@@ -725,7 +725,7 @@ namespace cryptonote
         });
       }
     }
-    waiter.wait();
+    waiter.wait(&tpool);
 
     bool ok = true;
     it = tx_blobs.begin();
@@ -752,7 +752,7 @@ namespace cryptonote
   //-----------------------------------------------------------------------------------------------
   bool core::handle_incoming_tx(const blobdata& tx_blob, tx_verification_context& tvc, bool keeped_by_block, bool relayed, bool do_not_relay)
   {
-    std::list<cryptonote::blobdata> tx_blobs;
+    std::vector<cryptonote::blobdata> tx_blobs;
     tx_blobs.push_back(tx_blob);
     std::vector<tx_verification_context> tvcv(1);
     bool r = handle_incoming_txs(tx_blobs, tvcv, keeped_by_block, relayed, do_not_relay);
@@ -918,8 +918,8 @@ namespace cryptonote
       const uint64_t end = start_offset + count - 1;
       m_blockchain_storage.for_blocks_range(start_offset, end,
         [this, &emission_amount, &total_fee_amount](uint64_t, const crypto::hash& hash, const block& b){
-      std::list<transaction> txs;
-      std::list<crypto::hash> missed_txs;
+      std::vector<transaction> txs;
+      std::vector<crypto::hash> missed_txs;
       uint64_t coinbase_amount = get_outs_money_amount(b.miner_tx);
       this->get_transactions(b.tx_hashes, txs, missed_txs);      
       uint64_t tx_fee_amount = 0;
@@ -1015,7 +1015,7 @@ namespace cryptonote
   bool core::relay_txpool_transactions()
   {
     // we attempt to relay txes that should be relayed, but were not
-    std::list<std::pair<crypto::hash, cryptonote::blobdata>> txs;
+    std::vector<std::pair<crypto::hash, cryptonote::blobdata>> txs;
     if (m_mempool.get_relayable_transactions(txs) && !txs.empty())
     {
       cryptonote_connection_context fake_context = AUTO_VAL_INIT(fake_context);
@@ -1033,7 +1033,7 @@ namespace cryptonote
   //-----------------------------------------------------------------------------------------------
   void core::on_transaction_relayed(const cryptonote::blobdata& tx_blob)
   {
-    std::list<std::pair<crypto::hash, cryptonote::blobdata>> txs;
+    std::vector<std::pair<crypto::hash, cryptonote::blobdata>> txs;
     cryptonote::transaction tx;
     crypto::hash tx_hash, tx_prefix_hash;
     if (!parse_and_validate_tx_from_blob(tx_blob, tx, tx_hash, tx_prefix_hash))
@@ -1055,9 +1055,9 @@ namespace cryptonote
     return m_blockchain_storage.find_blockchain_supplement(qblock_ids, resp);
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, size_t max_count) const
+  bool core::find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata> > > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, bool get_miner_tx_hash, size_t max_count) const
   {
-    return m_blockchain_storage.find_blockchain_supplement(req_start_block, qblock_ids, blocks, total_height, start_height, pruned, max_count);
+    return m_blockchain_storage.find_blockchain_supplement(req_start_block, qblock_ids, blocks, total_height, start_height, pruned, get_miner_tx_hash, max_count);
   }
   //-----------------------------------------------------------------------------------------------
   bool core::get_random_outs_for_amounts(const COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS::request& req, COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS::response& res) const
@@ -1112,7 +1112,7 @@ namespace cryptonote
   {
     block_verification_context bvc = boost::value_initialized<block_verification_context>();
     m_miner.pause();
-    std::list<block_complete_entry> blocks;
+    std::vector<block_complete_entry> blocks;
     try
     {
       blocks.push_back(get_block_complete_entry(b, m_mempool));
@@ -1136,8 +1136,8 @@ namespace cryptonote
       cryptonote_connection_context exclude_context = boost::value_initialized<cryptonote_connection_context>();
       NOTIFY_NEW_BLOCK::request arg = AUTO_VAL_INIT(arg);
       arg.current_blockchain_height = m_blockchain_storage.get_current_blockchain_height();
-      std::list<crypto::hash> missed_txs;
-      std::list<cryptonote::blobdata> txs;
+      std::vector<crypto::hash> missed_txs;
+      std::vector<cryptonote::blobdata> txs;
       m_blockchain_storage.get_transactions_blobs(b.tx_hashes, txs, missed_txs);
       if(missed_txs.size() &&  m_blockchain_storage.get_block_id_by_height(get_block_height(b)) != get_block_hash(b))
       {
@@ -1173,7 +1173,7 @@ namespace cryptonote
   }
 
   //-----------------------------------------------------------------------------------------------
-  bool core::prepare_handle_incoming_blocks(const std::list<block_complete_entry> &blocks)
+  bool core::prepare_handle_incoming_blocks(const std::vector<block_complete_entry> &blocks)
   {
     m_incoming_tx_lock.lock();
     m_blockchain_storage.prepare_handle_incoming_blocks(blocks);
@@ -1266,7 +1266,7 @@ namespace cryptonote
     return true;
   }
   //-----------------------------------------------------------------------------------------------
-  bool core::get_pool_transactions(std::list<transaction>& txs, bool include_sensitive_data) const
+  bool core::get_pool_transactions(std::vector<transaction>& txs, bool include_sensitive_data) const
   {
     m_mempool.get_transactions(txs, include_sensitive_data);
     return true;
@@ -1554,7 +1554,7 @@ namespace cryptonote
     return m_target_blockchain_height;
   }
   //-----------------------------------------------------------------------------------------------
-  uint64_t core::prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes)
+  uint64_t core::prevalidate_block_hashes(uint64_t height, const std::vector<crypto::hash> &hashes)
   {
     return get_blockchain_storage().prevalidate_block_hashes(height, hashes);
   }
diff --git a/src/cryptonote_core/cryptonote_core.h b/src/cryptonote_core/cryptonote_core.h
index 91bd50729..03000383e 100644
--- a/src/cryptonote_core/cryptonote_core.h
+++ b/src/cryptonote_core/cryptonote_core.h
@@ -133,7 +133,7 @@ namespace cryptonote
       *
       * @return true if the transactions made it to the transaction pool, otherwise false
       */
-     bool handle_incoming_txs(const std::list<blobdata>& tx_blobs, std::vector<tx_verification_context>& tvc, bool keeped_by_block, bool relayed, bool do_not_relay);
+     bool handle_incoming_txs(const std::vector<blobdata>& tx_blobs, std::vector<tx_verification_context>& tvc, bool keeped_by_block, bool relayed, bool do_not_relay);
 
      /**
       * @brief handles an incoming block
@@ -156,7 +156,7 @@ namespace cryptonote
       *
       * @note see Blockchain::prepare_handle_incoming_blocks
       */
-     bool prepare_handle_incoming_blocks(const std::list<block_complete_entry>  &blocks);
+     bool prepare_handle_incoming_blocks(const std::vector<block_complete_entry>  &blocks);
 
      /**
       * @copydoc Blockchain::cleanup_handle_incoming_blocks
@@ -308,25 +308,25 @@ namespace cryptonote
      void get_blockchain_top(uint64_t& height, crypto::hash& top_id) const;
 
      /**
-      * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&, std::list<transaction>&) const
+      * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::vector<std::pair<cryptonote::blobdata,block>>&, std::vector<transaction>&) const
       *
-      * @note see Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&, std::list<transaction>&) const
+      * @note see Blockchain::get_blocks(uint64_t, size_t, std::vector<std::pair<cryptonote::blobdata,block>>&, std::vector<transaction>&) const
       */
-     bool get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks, std::list<cryptonote::blobdata>& txs) const;
+     bool get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks, std::vector<cryptonote::blobdata>& txs) const;
 
      /**
-      * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
+      * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::vector<std::pair<cryptonote::blobdata,block>>&) const
       *
-      * @note see Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
+      * @note see Blockchain::get_blocks(uint64_t, size_t, std::vector<std::pair<cryptonote::blobdata,block>>&) const
       */
-     bool get_blocks(uint64_t start_offset, size_t count, std::list<std::pair<cryptonote::blobdata,block>>& blocks) const;
+     bool get_blocks(uint64_t start_offset, size_t count, std::vector<std::pair<cryptonote::blobdata,block>>& blocks) const;
 
      /**
-      * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
+      * @copydoc Blockchain::get_blocks(uint64_t, size_t, std::vector<std::pair<cryptonote::blobdata,block>>&) const
       *
-      * @note see Blockchain::get_blocks(uint64_t, size_t, std::list<std::pair<cryptonote::blobdata,block>>&) const
+      * @note see Blockchain::get_blocks(uint64_t, size_t, std::vector<std::pair<cryptonote::blobdata,block>>&) const
       */
-     bool get_blocks(uint64_t start_offset, size_t count, std::list<block>& blocks) const;
+     bool get_blocks(uint64_t start_offset, size_t count, std::vector<block>& blocks) const;
 
      /**
       * @copydoc Blockchain::get_blocks(const t_ids_container&, t_blocks_container&, t_missed_container&) const
@@ -351,14 +351,14 @@ namespace cryptonote
       *
       * @note see Blockchain::get_transactions
       */
-     bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<cryptonote::blobdata>& txs, std::list<crypto::hash>& missed_txs) const;
+     bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::vector<cryptonote::blobdata>& txs, std::vector<crypto::hash>& missed_txs) const;
 
      /**
       * @copydoc Blockchain::get_transactions
       *
       * @note see Blockchain::get_transactions
       */
-     bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::list<transaction>& txs, std::list<crypto::hash>& missed_txs) const;
+     bool get_transactions(const std::vector<crypto::hash>& txs_ids, std::vector<transaction>& txs, std::vector<crypto::hash>& missed_txs) const;
 
      /**
       * @copydoc Blockchain::get_block_by_hash
@@ -370,9 +370,9 @@ namespace cryptonote
      /**
       * @copydoc Blockchain::get_alternative_blocks
       *
-      * @note see Blockchain::get_alternative_blocks(std::list<block>&) const
+      * @note see Blockchain::get_alternative_blocks(std::vector<block>&) const
       */
-     bool get_alternative_blocks(std::list<block>& blocks) const;
+     bool get_alternative_blocks(std::vector<block>& blocks) const;
 
      /**
       * @copydoc Blockchain::get_alternative_blocks_count
@@ -429,7 +429,7 @@ namespace cryptonote
       *
       * @note see tx_memory_pool::get_transactions
       */
-     bool get_pool_transactions(std::list<transaction>& txs, bool include_unrelayed_txes = true) const;
+     bool get_pool_transactions(std::vector<transaction>& txs, bool include_unrelayed_txes = true) const;
 
      /**
       * @copydoc tx_memory_pool::get_txpool_backlog
@@ -512,11 +512,11 @@ namespace cryptonote
      bool find_blockchain_supplement(const std::list<crypto::hash>& qblock_ids, NOTIFY_RESPONSE_CHAIN_ENTRY::request& resp) const;
 
      /**
-      * @copydoc Blockchain::find_blockchain_supplement(const uint64_t, const std::list<crypto::hash>&, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >&, uint64_t&, uint64_t&, size_t) const
+      * @copydoc Blockchain::find_blockchain_supplement(const uint64_t, const std::list<crypto::hash>&, std::vector<std::pair<cryptonote::blobdata, std::vector<cryptonote::blobdata> > >&, uint64_t&, uint64_t&, size_t) const
       *
-      * @note see Blockchain::find_blockchain_supplement(const uint64_t, const std::list<crypto::hash>&, std::list<std::pair<cryptonote::blobdata, std::list<transaction> > >&, uint64_t&, uint64_t&, size_t) const
+      * @note see Blockchain::find_blockchain_supplement(const uint64_t, const std::list<crypto::hash>&, std::vector<std::pair<cryptonote::blobdata, std::vector<transaction> > >&, uint64_t&, uint64_t&, size_t) const
       */
-     bool find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::list<std::pair<cryptonote::blobdata, std::list<cryptonote::blobdata> > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, size_t max_count) const;
+     bool find_blockchain_supplement(const uint64_t req_start_block, const std::list<crypto::hash>& qblock_ids, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata> > > >& blocks, uint64_t& total_height, uint64_t& start_height, bool pruned, bool get_miner_tx_hash, size_t max_count) const;
 
      /**
       * @brief gets some stats about the daemon
@@ -763,7 +763,7 @@ namespace cryptonote
       *
       * @return number of usable blocks
       */
-     uint64_t prevalidate_block_hashes(uint64_t height, const std::list<crypto::hash> &hashes);
+     uint64_t prevalidate_block_hashes(uint64_t height, const std::vector<crypto::hash> &hashes);
 
      /**
       * @brief get free disk space on the blockchain partition
diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp
index 9df3b458b..8dee2b922 100644
--- a/src/cryptonote_core/tx_pool.cpp
+++ b/src/cryptonote_core/tx_pool.cpp
@@ -558,11 +558,12 @@ namespace cryptonote
   }
   //---------------------------------------------------------------------------------
   //TODO: investigate whether boolean return is appropriate
-  bool tx_memory_pool::get_relayable_transactions(std::list<std::pair<crypto::hash, cryptonote::blobdata>> &txs) const
+  bool tx_memory_pool::get_relayable_transactions(std::vector<std::pair<crypto::hash, cryptonote::blobdata>> &txs) const
   {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
     const uint64_t now = time(NULL);
+    txs.reserve(m_blockchain.get_txpool_tx_count());
     m_blockchain.for_all_txpool_txes([this, now, &txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *){
       // 0 fee transactions are never relayed
       if(meta.fee > 0 && !meta.do_not_relay && now - meta.last_relayed_time > get_relay_delay(now, meta.receive_time))
@@ -590,7 +591,7 @@ namespace cryptonote
     return true;
   }
   //---------------------------------------------------------------------------------
-  void tx_memory_pool::set_relayed(const std::list<std::pair<crypto::hash, cryptonote::blobdata>> &txs)
+  void tx_memory_pool::set_relayed(const std::vector<std::pair<crypto::hash, cryptonote::blobdata>> &txs)
   {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
@@ -623,10 +624,11 @@ namespace cryptonote
     return m_blockchain.get_txpool_tx_count(include_unrelayed_txes);
   }
   //---------------------------------------------------------------------------------
-  void tx_memory_pool::get_transactions(std::list<transaction>& txs, bool include_unrelayed_txes) const
+  void tx_memory_pool::get_transactions(std::vector<transaction>& txs, bool include_unrelayed_txes) const
   {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
+    txs.reserve(m_blockchain.get_txpool_tx_count(include_unrelayed_txes));
     m_blockchain.for_all_txpool_txes([&txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
       transaction tx;
       if (!parse_and_validate_tx_from_blob(*bd, tx))
@@ -644,6 +646,7 @@ namespace cryptonote
   {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
+    txs.reserve(m_blockchain.get_txpool_tx_count(include_unrelayed_txes));
     m_blockchain.for_all_txpool_txes([&txs](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
       txs.push_back(txid);
       return true;
@@ -655,6 +658,7 @@ namespace cryptonote
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
     const uint64_t now = time(NULL);
+    backlog.reserve(m_blockchain.get_txpool_tx_count(include_unrelayed_txes));
     m_blockchain.for_all_txpool_txes([&backlog, now](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
       backlog.push_back({meta.blob_size, meta.fee, meta.receive_time - now});
       return true;
@@ -743,6 +747,8 @@ namespace cryptonote
   {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
+    tx_infos.reserve(m_blockchain.get_txpool_tx_count());
+    key_image_infos.reserve(m_blockchain.get_txpool_tx_count());
     m_blockchain.for_all_txpool_txes([&tx_infos, key_image_infos, include_sensitive_data](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
       tx_info txi;
       txi.id_hash = epee::string_tools::pod_to_hex(txid);
@@ -813,6 +819,8 @@ namespace cryptonote
   {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
     CRITICAL_REGION_LOCAL1(m_blockchain);
+    tx_infos.reserve(m_blockchain.get_txpool_tx_count());
+    key_image_infos.reserve(m_blockchain.get_txpool_tx_count());
     m_blockchain.for_all_txpool_txes([&tx_infos, key_image_infos](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
       cryptonote::rpc::tx_in_pool txi;
       txi.tx_hash = txid;
diff --git a/src/cryptonote_core/tx_pool.h b/src/cryptonote_core/tx_pool.h
index 4ce2f085d..5ccb71196 100644
--- a/src/cryptonote_core/tx_pool.h
+++ b/src/cryptonote_core/tx_pool.h
@@ -237,7 +237,7 @@ namespace cryptonote
      * @param include_unrelayed_txes include unrelayed txes in the result
      *
      */
-    void get_transactions(std::list<transaction>& txs, bool include_unrelayed_txes = true) const;
+    void get_transactions(std::vector<transaction>& txs, bool include_unrelayed_txes = true) const;
 
     /**
      * @brief get a list of all transaction hashes in the pool
@@ -324,14 +324,14 @@ namespace cryptonote
      *
      * @return true
      */
-    bool get_relayable_transactions(std::list<std::pair<crypto::hash, cryptonote::blobdata>>& txs) const;
+    bool get_relayable_transactions(std::vector<std::pair<crypto::hash, cryptonote::blobdata>>& txs) const;
 
     /**
      * @brief tell the pool that certain transactions were just relayed
      *
      * @param txs the list of transactions (and their hashes)
      */
-    void set_relayed(const std::list<std::pair<crypto::hash, cryptonote::blobdata>>& txs);
+    void set_relayed(const std::vector<std::pair<crypto::hash, cryptonote::blobdata>>& txs);
 
     /**
      * @brief get the total number of transactions in the pool