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// Copyright (c) 2011-2022 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/amount.h>
#include <kernel/cs_main.h>
#include <policy/ephemeral_policy.h>
#include <policy/policy.h>
#include <primitives/transaction.h>
#include <script/script.h>
#include <sync.h>
#include <test/util/setup_common.h>
#include <txmempool.h>
#include <util/check.h>
#include <cstdint>
#include <memory>
#include <vector>
static void AddTx(const CTransactionRef& tx, CTxMemPool& pool) EXCLUSIVE_LOCKS_REQUIRED(cs_main, pool.cs)
{
int64_t nTime{0};
unsigned int nHeight{1};
uint64_t sequence{0};
bool spendsCoinbase{false};
unsigned int sigOpCost{4};
uint64_t fee{0};
LockPoints lp;
pool.addUnchecked(CTxMemPoolEntry(
tx, fee, nTime, nHeight, sequence,
spendsCoinbase, sigOpCost, lp));
}
static void MempoolCheckEphemeralSpends(benchmark::Bench& bench)
{
const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
int number_outputs{1000};
if (bench.complexityN() > 1) {
number_outputs = static_cast<int>(bench.complexityN());
}
// Tx with many outputs
CMutableTransaction tx1;
tx1.vin.resize(1);
tx1.vout.resize(number_outputs);
for (size_t i = 0; i < tx1.vout.size(); i++) {
tx1.vout[i].scriptPubKey = CScript();
// Each output progressively larger
tx1.vout[i].nValue = i * CENT;
}
const auto& parent_txid = tx1.GetHash();
// Spends all outputs of tx1, other details don't matter
CMutableTransaction tx2;
tx2.vin.resize(tx1.vout.size());
for (size_t i = 0; i < tx2.vin.size(); i++) {
tx2.vin[0].prevout.hash = parent_txid;
tx2.vin[0].prevout.n = i;
}
tx2.vout.resize(1);
CTxMemPool& pool = *Assert(testing_setup->m_node.mempool);
LOCK2(cs_main, pool.cs);
// Create transaction references outside the "hot loop"
const CTransactionRef tx1_r{MakeTransactionRef(tx1)};
const CTransactionRef tx2_r{MakeTransactionRef(tx2)};
AddTx(tx1_r, pool);
uint32_t iteration{0};
TxValidationState dummy_state;
Txid dummy_txid;
bench.run([&]() NO_THREAD_SAFETY_ANALYSIS {
CheckEphemeralSpends({tx2_r}, /*dust_relay_rate=*/CFeeRate(iteration * COIN / 10), pool, dummy_state, dummy_txid);
iteration++;
});
}
BENCHMARK(MempoolCheckEphemeralSpends, benchmark::PriorityLevel::HIGH);
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