forked from OSchip/llvm-project
34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include <algorithm>
|
|
#include <array>
|
|
#include <cstddef>
|
|
#include <functional>
|
|
#include <random>
|
|
|
|
#include "benchmark/benchmark.h"
|
|
|
|
constexpr std::size_t MAX_BUFFER_LEN = 256;
|
|
constexpr std::size_t MAX_SEED_LEN = 16;
|
|
|
|
static void BM_SeedSeq_Generate(benchmark::State& state) {
|
|
std::array<std::uint32_t, MAX_BUFFER_LEN> buffer;
|
|
std::array<std::uint32_t, MAX_SEED_LEN> seeds;
|
|
{
|
|
std::random_device rd;
|
|
std::generate(std::begin(seeds), std::begin(seeds) + state.range(0), [&]() { return rd(); });
|
|
}
|
|
std::seed_seq seed(std::begin(seeds), std::begin(seeds) + state.range(0));
|
|
for (auto _ : state) {
|
|
seed.generate(std::begin(buffer), std::begin(buffer) + state.range(1));
|
|
}
|
|
}
|
|
BENCHMARK(BM_SeedSeq_Generate)->Ranges({{1, MAX_SEED_LEN}, {1, MAX_BUFFER_LEN}});
|
|
|
|
BENCHMARK_MAIN();
|