text: // Copyright (c) 2011-2019 The ton Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <bench/bench.h>
  #include <consensus/validation.h>
  #include <crypto/sha256.h>
  #include <test/util.h>
  #include <txmempool.h>
  #include <validation.h>
  
  
  #include <list>
  #include <vector>
  
  static void AssembleBlock(benchmark::State& state)
  {
      const std::vector<unsigned char> op_true{OP_TRUE};
      CScriptWitness witness;
      witness.stack.push_back(op_true);
  
      uint256 witness_program;
      CSHA256().Write(&op_true[0], op_true.size()).Finalize(witness_program.begin());
  
      const CScript SCRIPT_PUB{CScript(OP_0) << std::vector<unsigned char>{witness_program.begin(), witness_program.end()}};
  
      // Collect some loose transactions that spend the coinbases of our mined blocks
      constexpr size_t NUM_BLOCKS{200};
      std::array<CTransactionRef, NUM_BLOCKS - COINBASE_MATURITY + 1> txs;
      for (size_t b{0}; b < NUM_BLOCKS; ++b) {
          CMutableTransaction tx;
          tx.vin.push_back(MineBlock(SCRIPT_PUB));
          tx.vin.back().scriptWitness = witness;
          tx.vout.emplace_back(1337, SCRIPT_PUB);
          if (NUM_BLOCKS - b >= COINBASE_MATURITY)
              txs.at(b) = MakeTransactionRef(tx);
      }
      {
          LOCK(::cs_main); // Required for ::AcceptToMemoryPool.
  
          for (const auto& txr : txs) {
              CValidationState state;
              bool ret{::AcceptToMemoryPool(::mempool, state, txr, nullptr /* pfMissingInputs */, nullptr /* plTxnReplaced */, false /* bypass_limits */, /* nAbsurdFee */ 0)};
              assert(ret);
          }
      }
  
      while (state.KeepRunning()) {
          PrepareBlock(SCRIPT_PUB);
      }
  }
  
  BENCHMARK(AssembleBlock, 700);
  