| /* |
| * Copyright (C) 2018 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 <stdint.h> |
| |
| #include <memory> |
| |
| #include <benchmark/benchmark.h> |
| |
| #include <unwindstack/Maps.h> |
| #include <unwindstack/Memory.h> |
| #include <unwindstack/Regs.h> |
| #include <unwindstack/RegsGetLocal.h> |
| #include <unwindstack/Unwinder.h> |
| |
| size_t Call6(std::shared_ptr<unwindstack::Memory>& process_memory, unwindstack::Maps* maps) { |
| std::unique_ptr<unwindstack::Regs> regs(unwindstack::Regs::CreateFromLocal()); |
| unwindstack::RegsGetLocal(regs.get()); |
| unwindstack::Unwinder unwinder(32, maps, regs.get(), process_memory); |
| unwinder.Unwind(); |
| return unwinder.NumFrames(); |
| } |
| |
| size_t Call5(std::shared_ptr<unwindstack::Memory>& process_memory, unwindstack::Maps* maps) { |
| return Call6(process_memory, maps); |
| } |
| |
| size_t Call4(std::shared_ptr<unwindstack::Memory>& process_memory, unwindstack::Maps* maps) { |
| return Call5(process_memory, maps); |
| } |
| |
| size_t Call3(std::shared_ptr<unwindstack::Memory>& process_memory, unwindstack::Maps* maps) { |
| return Call4(process_memory, maps); |
| } |
| |
| size_t Call2(std::shared_ptr<unwindstack::Memory>& process_memory, unwindstack::Maps* maps) { |
| return Call3(process_memory, maps); |
| } |
| |
| size_t Call1(std::shared_ptr<unwindstack::Memory>& process_memory, unwindstack::Maps* maps) { |
| return Call2(process_memory, maps); |
| } |
| |
| static void BM_uncached_unwind(benchmark::State& state) { |
| auto process_memory = unwindstack::Memory::CreateProcessMemory(getpid()); |
| unwindstack::LocalMaps maps; |
| if (!maps.Parse()) { |
| state.SkipWithError("Failed to parse local maps."); |
| } |
| |
| for (auto _ : state) { |
| benchmark::DoNotOptimize(Call1(process_memory, &maps)); |
| } |
| } |
| BENCHMARK(BM_uncached_unwind); |
| |
| static void BM_cached_unwind(benchmark::State& state) { |
| auto process_memory = unwindstack::Memory::CreateProcessMemoryCached(getpid()); |
| unwindstack::LocalMaps maps; |
| if (!maps.Parse()) { |
| state.SkipWithError("Failed to parse local maps."); |
| } |
| |
| for (auto _ : state) { |
| benchmark::DoNotOptimize(Call1(process_memory, &maps)); |
| } |
| } |
| BENCHMARK(BM_cached_unwind); |
| |
| BENCHMARK_MAIN(); |