| /* |
| * Copyright (C) 2023 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <fcntl.h> |
| #include <sys/mman.h> |
| #include <unistd.h> |
| |
| #include <benchmark/benchmark.h> |
| |
| #include "android-base/file.h" |
| #include "android-base/logging.h" |
| |
| static void BenchmarkReadFdToString(benchmark::State& state) { |
| android::base::unique_fd fd(memfd_create("memfile", 0)); |
| CHECK(fd.get() > 0); |
| CHECK_EQ(ftruncate(fd, state.range(0)), 0); |
| for (auto _ : state) { |
| CHECK_EQ(lseek(fd, 0, SEEK_SET), 0); |
| std::string str; |
| benchmark::DoNotOptimize(android::base::ReadFdToString(fd, &str)); |
| } |
| state.SetBytesProcessed(state.iterations() * state.range(0)); |
| } |
| |
| BENCHMARK_RANGE(BenchmarkReadFdToString, 0, 1024 * 1024); |