ccoins_caching.cpp raw

   1  // Copyright (c) 2016-present The Bitcoin Core developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #include <bench/bench.h>
   6  #include <coins.h>
   7  #include <consensus/amount.h>
   8  #include <consensus/validation.h>
   9  #include <key.h>
  10  #include <policy/policy.h>
  11  #include <primitives/transaction.h>
  12  #include <script/script.h>
  13  #include <script/signingprovider.h>
  14  #include <test/util/transaction_utils.h>
  15  #include <util/check.h>
  16  
  17  #include <span>
  18  #include <vector>
  19  
  20  // Microbenchmark for simple accesses to a CCoinsViewCache database. Note from
  21  // laanwj, "replicating the actual usage patterns of the client is hard though,
  22  // many times micro-benchmarks of the database showed completely different
  23  // characteristics than e.g. reindex timings. But that's not a requirement of
  24  // every benchmark."
  25  // (https://github.com/bitcoin/bitcoin/issues/7883#issuecomment-224807484)
  26  static void CCoinsCaching(benchmark::Bench& bench)
  27  {
  28      ECC_Context ecc_context{};
  29  
  30      FillableSigningProvider keystore;
  31      CCoinsViewCache coins{&CoinsViewEmpty::Get()};
  32      std::vector<CMutableTransaction> dummyTransactions =
  33          SetupDummyInputs(keystore, coins, {11 * COIN, 50 * COIN, 21 * COIN, 22 * COIN});
  34  
  35      CMutableTransaction t1;
  36      t1.vin.resize(3);
  37      t1.vin[0].prevout.hash = dummyTransactions[0].GetHash();
  38      t1.vin[0].prevout.n = 1;
  39      t1.vin[0].scriptSig << std::vector<unsigned char>(65, 0);
  40      t1.vin[1].prevout.hash = dummyTransactions[1].GetHash();
  41      t1.vin[1].prevout.n = 0;
  42      t1.vin[1].scriptSig << std::vector<unsigned char>(65, 0) << std::vector<unsigned char>(33, 4);
  43      t1.vin[2].prevout.hash = dummyTransactions[1].GetHash();
  44      t1.vin[2].prevout.n = 1;
  45      t1.vin[2].scriptSig << std::vector<unsigned char>(65, 0) << std::vector<unsigned char>(33, 4);
  46      t1.vout.resize(2);
  47      t1.vout[0].nValue = 90 * COIN;
  48      t1.vout[0].scriptPubKey << OP_1;
  49  
  50      // Benchmark.
  51      const CTransaction tx_1(t1);
  52      bench.run([&] {
  53          assert(ValidateInputsStandardness(tx_1, coins).IsValid());
  54      });
  55  }
  56  
  57  BENCHMARK(CCoinsCaching);
  58