mirror of https://github.com/bitcoin/bitcoin
86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
// Copyright (c) 2016-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <bench/bench.h>
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#include <key.h>
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#include <script/script.h>
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#include <script/interpreter.h>
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#include <streams.h>
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#include <test/util/transaction_utils.h>
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#include <array>
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// Microbenchmark for verification of a basic P2WPKH script. Can be easily
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// modified to measure performance of other types of scripts.
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static void VerifyScriptBench(benchmark::Bench& bench)
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{
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ECC_Start();
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const uint32_t flags{SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_P2SH};
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const int witnessversion = 0;
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// Key pair.
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CKey key;
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static const std::array<unsigned char, 32> vchKey = {
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{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
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}
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};
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key.Set(vchKey.begin(), vchKey.end(), false);
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CPubKey pubkey = key.GetPubKey();
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uint160 pubkeyHash;
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CHash160().Write(pubkey).Finalize(pubkeyHash);
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// Script.
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CScript scriptPubKey = CScript() << witnessversion << ToByteVector(pubkeyHash);
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CScript scriptSig;
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CScript witScriptPubkey = CScript() << OP_DUP << OP_HASH160 << ToByteVector(pubkeyHash) << OP_EQUALVERIFY << OP_CHECKSIG;
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const CMutableTransaction& txCredit = BuildCreditingTransaction(scriptPubKey, 1);
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CMutableTransaction txSpend = BuildSpendingTransaction(scriptSig, CScriptWitness(), CTransaction(txCredit));
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CScriptWitness& witness = txSpend.vin[0].scriptWitness;
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witness.stack.emplace_back();
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key.Sign(SignatureHash(witScriptPubkey, txSpend, 0, SIGHASH_ALL, txCredit.vout[0].nValue, SigVersion::WITNESS_V0), witness.stack.back());
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witness.stack.back().push_back(static_cast<unsigned char>(SIGHASH_ALL));
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witness.stack.push_back(ToByteVector(pubkey));
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// Benchmark.
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bench.run([&] {
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ScriptError err;
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bool success = VerifyScript(
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txSpend.vin[0].scriptSig,
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txCredit.vout[0].scriptPubKey,
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&txSpend.vin[0].scriptWitness,
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flags,
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MutableTransactionSignatureChecker(&txSpend, 0, txCredit.vout[0].nValue, MissingDataBehavior::ASSERT_FAIL),
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&err);
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assert(err == SCRIPT_ERR_OK);
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assert(success);
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});
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ECC_Stop();
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}
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static void VerifyNestedIfScript(benchmark::Bench& bench)
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{
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std::vector<std::vector<unsigned char>> stack;
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CScript script;
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for (int i = 0; i < 100; ++i) {
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script << OP_1 << OP_IF;
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}
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for (int i = 0; i < 1000; ++i) {
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script << OP_1;
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}
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for (int i = 0; i < 100; ++i) {
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script << OP_ENDIF;
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}
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bench.run([&] {
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auto stack_copy = stack;
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ScriptError error;
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bool ret = EvalScript(stack_copy, script, 0, BaseSignatureChecker(), SigVersion::BASE, &error);
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assert(ret);
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});
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}
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BENCHMARK(VerifyScriptBench, benchmark::PriorityLevel::HIGH);
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BENCHMARK(VerifyNestedIfScript, benchmark::PriorityLevel::HIGH);
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