Bitcoin Core  31.0.0
P2P Digital Currency
obfuscation.cpp
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1 // Copyright (c) The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or https://opensource.org/license/mit/.
4 
5 #include <bench/bench.h>
6 #include <random.h>
7 #include <util/obfuscation.h>
8 
9 #include <cstddef>
10 #include <vector>
11 
13 {
14  FastRandomContext frc{/*fDeterministic=*/true};
15  auto data{frc.randbytes<std::byte>(1024)};
16  const Obfuscation obfuscation{frc.randbytes<Obfuscation::KEY_SIZE>()};
17 
18  size_t offset{0};
19  bench.batch(data.size()).unit("byte").run([&] {
20  obfuscation(data, offset++); // mutated differently each time
22  });
23 }
24 
static void ObfuscationBench(benchmark::Bench &bench)
Definition: obfuscation.cpp:12
static constexpr size_t KEY_SIZE
Definition: obfuscation.h:23
Bench & run(char const *benchmarkName, Op &&op)
Repeatedly calls op() based on the configuration, and performs measurements.
Definition: nanobench.h:1234
void doNotOptimizeAway(Arg &&arg)
Makes sure none of the given arguments are optimized away by the compiler.
Definition: nanobench.h:1279
Fast randomness source.
Definition: random.h:385
BENCHMARK(ObfuscationBench)
Main entry point to nanobench&#39;s benchmarking facility.
Definition: nanobench.h:627
Bench & batch(T b) noexcept
Sets the batch size.
Definition: nanobench.h:1258