| /* |
| * Copyright (C) 2020 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 <err.h> |
| #include <inttypes.h> |
| #include <malloc.h> |
| #include <stdint.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include <android-base/file.h> |
| #include <android-base/strings.h> |
| #include <benchmark/benchmark.h> |
| |
| #include <unwindstack/Elf.h> |
| #include <unwindstack/Memory.h> |
| |
| #if defined(__BIONIC__) |
| |
| #include <meminfo/procmeminfo.h> |
| #include <procinfo/process_map.h> |
| |
| static void Gather(uint64_t* rss_bytes) { |
| android::meminfo::ProcMemInfo proc_mem(getpid()); |
| const std::vector<android::meminfo::Vma>& maps = proc_mem.MapsWithoutUsageStats(); |
| for (auto& vma : maps) { |
| if (vma.name == "[anon:libc_malloc]" || android::base::StartsWith(vma.name, "[anon:scudo:") || |
| android::base::StartsWith(vma.name, "[anon:GWP-ASan")) { |
| android::meminfo::Vma update_vma(vma); |
| if (!proc_mem.FillInVmaStats(update_vma)) { |
| err(1, "FillInVmaStats failed\n"); |
| } |
| *rss_bytes += update_vma.usage.rss; |
| } |
| } |
| } |
| #endif |
| |
| static void BenchmarkSymbolLookup(benchmark::State& state, std::vector<uint64_t> offsets, |
| std::string elf_file, bool expect_found) { |
| #if defined(__BIONIC__) |
| uint64_t rss_bytes = 0; |
| #endif |
| uint64_t alloc_bytes = 0; |
| for (auto _ : state) { |
| state.PauseTiming(); |
| unwindstack::Elf elf(unwindstack::Memory::CreateFileMemory(elf_file, 0).release()); |
| if (!elf.Init() || !elf.valid()) { |
| errx(1, "Internal Error: Cannot open elf."); |
| } |
| |
| #if defined(__BIONIC__) |
| mallopt(M_PURGE, 0); |
| uint64_t rss_bytes_before = 0; |
| Gather(&rss_bytes_before); |
| #endif |
| uint64_t alloc_bytes_before = mallinfo().uordblks; |
| state.ResumeTiming(); |
| |
| for (auto pc : offsets) { |
| std::string name; |
| uint64_t offset; |
| bool found = elf.GetFunctionName(pc, &name, &offset); |
| if (expect_found && !found) { |
| errx(1, "expected pc 0x%" PRIx64 " present, but not found.", pc); |
| } else if (!expect_found && found) { |
| errx(1, "expected pc 0x%" PRIx64 " not present, but found.", pc); |
| } |
| } |
| |
| state.PauseTiming(); |
| #if defined(__BIONIC__) |
| mallopt(M_PURGE, 0); |
| #endif |
| alloc_bytes += mallinfo().uordblks - alloc_bytes_before; |
| #if defined(__BIONIC__) |
| Gather(&rss_bytes); |
| rss_bytes -= rss_bytes_before; |
| #endif |
| state.ResumeTiming(); |
| } |
| |
| #if defined(__BIONIC__) |
| state.counters["RSS_BYTES"] = rss_bytes / static_cast<double>(state.iterations()); |
| #endif |
| state.counters["ALLOCATED_BYTES"] = alloc_bytes / static_cast<double>(state.iterations()); |
| } |
| |
| static void BenchmarkSymbolLookup(benchmark::State& state, uint64_t pc, std::string elf_file, |
| bool expect_found) { |
| BenchmarkSymbolLookup(state, std::vector<uint64_t>{pc}, elf_file, expect_found); |
| } |
| |
| std::string GetElfFile() { |
| return android::base::GetExecutableDirectory() + "/benchmarks/files/libart_arm.so"; |
| } |
| |
| std::string GetSortedElfFile() { |
| return android::base::GetExecutableDirectory() + "/benchmarks/files/boot_arm.oat"; |
| } |
| |
| void BM_symbol_not_present(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, 0, GetElfFile(), false); |
| } |
| BENCHMARK(BM_symbol_not_present); |
| |
| void BM_symbol_find_single(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, 0x22b2bc, GetElfFile(), true); |
| } |
| BENCHMARK(BM_symbol_find_single); |
| |
| void BM_symbol_find_single_many_times(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, std::vector<uint64_t>(15, 0x22b2bc), GetElfFile(), true); |
| } |
| BENCHMARK(BM_symbol_find_single_many_times); |
| |
| void BM_symbol_find_multiple(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, |
| std::vector<uint64_t>{0x22b2bc, 0xd5d30, 0x1312e8, 0x13582e, 0x1389c8}, |
| GetElfFile(), true); |
| } |
| BENCHMARK(BM_symbol_find_multiple); |
| |
| void BM_symbol_not_present_from_sorted(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, 0, GetSortedElfFile(), false); |
| } |
| BENCHMARK(BM_symbol_not_present_from_sorted); |
| |
| void BM_symbol_find_single_from_sorted(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, 0x138638, GetSortedElfFile(), true); |
| } |
| BENCHMARK(BM_symbol_find_single_from_sorted); |
| |
| void BM_symbol_find_single_many_times_from_sorted(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, std::vector<uint64_t>(15, 0x138638), GetSortedElfFile(), true); |
| } |
| BENCHMARK(BM_symbol_find_single_many_times_from_sorted); |
| |
| void BM_symbol_find_multiple_from_sorted(benchmark::State& state) { |
| BenchmarkSymbolLookup(state, |
| std::vector<uint64_t>{0x138638, 0x84350, 0x14df18, 0x1f3a38, 0x1f3ca8}, |
| GetSortedElfFile(), true); |
| } |
| BENCHMARK(BM_symbol_find_multiple_from_sorted); |