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/*
* 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 <android-base/strings.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();
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