dash/src/bench/duplicate_inputs.cpp
Wladimir J. van der Laan d413109da5 Merge #13558: Drop unused GetType() from CSizeComputer
893628be0166b4096b6e52f516e0f65bb63a75a2 Drop minor GetSerializeSize template (Ben Woosley)
da74db0940720407fafaf3582bbaf9c81a4d3b4d Drop unused GetType() from CSizeComputer (Ben Woosley)

Pull request description:

  Based on conversation in #13462, it seems the serialization `GetType` has very narrow use/effect. In every case except for `CAddress`, which specifically relates to a network peer's address, not a wallet address etc., the serialized representation of an object is irrespective of its destination / type.

  This removes the unused `GetType` method from `CSizeComputer` as a step to further narrowing that use.

Tree-SHA512: e72b8e9e5160396691e05aeaee3aba5a57935a75bd5005cfcc7fb51c936f3d1728a397f999da5c36696506dd815fafa5c738f3894df8864f25f91f639eba9c3d
2022-05-30 01:11:03 -04:00

66 lines
2.2 KiB
C++

// 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 <consensus/merkle.h>
#include <consensus/validation.h>
#include <policy/policy.h>
#include <pow.h>
#include <test/util/setup_common.h>
#include <txmempool.h>
#include <validation.h>
static void DuplicateInputs(benchmark::Bench& bench)
{
RegTestingSetup test_setup;
const CScript SCRIPT_PUB{CScript(OP_TRUE)};
const CChainParams& chainparams = Params();
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(block.nBits, 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 = (((MaxBlockSize() / ::GetSerializeSize(CTransaction(), PROTOCOL_VERSION)) - (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);
bench.minEpochIterations(10).run([&] {
CValidationState cvstate{};
assert(!CheckBlock(block, cvstate, chainparams.GetConsensus(), false, false));
assert(cvstate.GetRejectReason() == "bad-txns-inputs-duplicate");
});
}
BENCHMARK(DuplicateInputs);