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// Copyright (c) 2011-2018 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 <chainparams.h>
#include <coins.h>
#include <consensus/merkle.h>
#include <consensus/validation.h>
#include <miner.h>
#include <policy/policy.h>
#include <pow.h>
#include <scheduler.h>
#include <txdb.h>
#include <txmempool.h>
#include <util/time.h>
#include <validation.h>
#include <validationinterface.h>
#include <boost/thread.hpp>
#include <list>
#include <vector>
static void DuplicateInputs(benchmark::State& state)
{
const CScript SCRIPT_PUB{CScript(OP_TRUE)};
// Switch to regtest so we can mine faster
// Also segwit is active, so we can include witness transactions
SelectParams(CBaseChainParams::REGTEST);
InitScriptExecutionCache();
boost::thread_group thread_group;
CScheduler scheduler;
const CChainParams& chainparams = Params();
{
LOCK(cs_main);
::pblocktree.reset(new CBlockTreeDB(1 << 20, true));
::pcoinsdbview.reset(new CCoinsViewDB(1 << 23, true));
::pcoinsTip.reset(new CCoinsViewCache(pcoinsdbview.get()));
}
{
thread_group.create_thread(std::bind(&CScheduler::serviceQueue, &scheduler));
GetMainSignals().RegisterBackgroundSignalScheduler(scheduler);
LoadGenesisBlock(chainparams);
CValidationState cvstate;
ActivateBestChain(cvstate, chainparams);
assert(::chainActive.Tip() != nullptr);
const bool witness_enabled{IsWitnessEnabled(::chainActive.Tip(), chainparams.GetConsensus())};
assert(witness_enabled);
}
CBlock block{};
CMutableTransaction coinbaseTx{};
CMutableTransaction naughtyTx{};
CBlockIndex* pindexPrev = ::chainActive.Tip();
assert(pindexPrev != nullptr);
block.nBits = GetNextWorkRequired(pindexPrev, &block, chainparams.GetConsensus());
block.nNonce = 0;
auto nHeight = pindexPrev->nHeight + 1;
// Make a coinbase TX
coinbaseTx.vin.resize(1);
coinbaseTx.vin[0].prevout.SetNull();
coinbaseTx.vout.resize(1);
coinbaseTx.vout[0].scriptPubKey = SCRIPT_PUB;
coinbaseTx.vout[0].nValue = GetBlockSubsidy(nHeight, chainparams.GetConsensus());
coinbaseTx.vin[0].scriptSig = CScript() << nHeight << OP_0;
naughtyTx.vout.resize(1);
naughtyTx.vout[0].nValue = 0;
naughtyTx.vout[0].scriptPubKey = SCRIPT_PUB;
uint64_t n_inputs = (((MAX_BLOCK_SERIALIZED_SIZE / WITNESS_SCALE_FACTOR) - (CTransaction(coinbaseTx).GetTotalSize() + CTransaction(naughtyTx).GetTotalSize())) / 41) - 100;
for (uint64_t x = 0; x < (n_inputs - 1); ++x) {
naughtyTx.vin.emplace_back(GetRandHash(), 0, CScript(), 0);
}
naughtyTx.vin.emplace_back(naughtyTx.vin.back());
block.vtx.push_back(MakeTransactionRef(std::move(coinbaseTx)));
block.vtx.push_back(MakeTransactionRef(std::move(naughtyTx)));
block.hashMerkleRoot = BlockMerkleRoot(block);
while (state.KeepRunning()) {
CValidationState cvstate{};
assert(!CheckBlock(block, cvstate, chainparams.GetConsensus(), false, false));
assert(cvstate.GetRejectReason() == "bad-txns-inputs-duplicate");
}
thread_group.interrupt_all();
thread_group.join_all();
GetMainSignals().FlushBackgroundCallbacks();
GetMainSignals().UnregisterBackgroundSignalScheduler();
}
BENCHMARK(DuplicateInputs, 10);
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