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// Copyright (c) 2011-2020 The Bitcoin 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/mining.h>
#include <test/util/setup_common.h>
#include <test/util/wallet.h>
#include <txmempool.h>
#include <validation.h>
#include <vector>
static void AssembleBlock(benchmark::Bench& bench)
{
const auto test_setup = MakeNoLogFileContext<const TestingSetup>();
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(test_setup->m_node, 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) {
const MempoolAcceptResult res = ::AcceptToMemoryPool(::ChainstateActive(), *test_setup->m_node.mempool, txr, false /* bypass_limits */);
assert(res.m_result_type == MempoolAcceptResult::ResultType::VALID);
}
}
bench.run([&] {
PrepareBlock(test_setup->m_node, SCRIPT_PUB);
});
}
BENCHMARK(AssembleBlock);
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