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//===----------------------------------------------------------------------===//
//
// 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 <fstream>
#include <vector>
#include <benchmark/benchmark.h>
static void bm_ofstream_write(benchmark::State& state) {
std::vector<char> buffer;
buffer.resize(16384);
std::ofstream stream("/dev/null");
for (auto _ : state)
stream.write(buffer.data(), buffer.size());
}
BENCHMARK(bm_ofstream_write);
static void bm_ifstream_read(benchmark::State& state) {
std::vector<char> buffer;
buffer.resize(16384);
std::ofstream gen_testfile("testfile");
gen_testfile.write(buffer.data(), buffer.size());
std::ifstream stream("testfile");
assert(stream);
for (auto _ : state) {
stream.read(buffer.data(), buffer.size());
benchmark::DoNotOptimize(buffer);
stream.seekg(0);
}
}
BENCHMARK(bm_ifstream_read);
BENCHMARK_MAIN();
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