94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <err.h>
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#include <stdint.h>
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#include <string>
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <benchmark/benchmark.h>
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#include <unwindstack/Maps.h>
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class BenchmarkLocalUpdatableMaps : public unwindstack::LocalUpdatableMaps {
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public:
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BenchmarkLocalUpdatableMaps() : unwindstack::LocalUpdatableMaps() {}
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virtual ~BenchmarkLocalUpdatableMaps() = default;
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const std::string GetMapsFile() const override { return maps_file_; }
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void BenchmarkSetMapsFile(const std::string& maps_file) { maps_file_ = maps_file; }
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private:
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std::string maps_file_;
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};
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constexpr size_t kNumMaps = 10000;
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static void CreateInitialMap(const char* filename) {
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std::string maps;
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for (size_t i = 0; i < kNumMaps; i += 2) {
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maps += android::base::StringPrintf("%zu-%zu r-xp 0000 00:00 0 name%zu\n", i * 1000,
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(i + 1) * 1000, i);
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}
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if (!android::base::WriteStringToFile(maps, filename)) {
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errx(1, "WriteStringToFile failed");
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}
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}
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static void CreateReparseMap(const char* filename) {
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std::string maps;
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for (size_t i = 0; i < kNumMaps; i++) {
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maps += android::base::StringPrintf("%zu-%zu r-xp 0000 00:00 0 name%zu\n", i * 2000,
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(i + 1) * 2000, 2 * i);
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}
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if (!android::base::WriteStringToFile(maps, filename)) {
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errx(1, "WriteStringToFile failed");
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}
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}
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void BM_local_updatable_maps_reparse(benchmark::State& state) {
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TemporaryFile initial_map;
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CreateInitialMap(initial_map.path);
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TemporaryFile reparse_map;
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CreateReparseMap(reparse_map.path);
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for (auto _ : state) {
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BenchmarkLocalUpdatableMaps maps;
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maps.BenchmarkSetMapsFile(initial_map.path);
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if (!maps.Reparse()) {
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errx(1, "Internal Error: reparse of initial maps filed.");
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}
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if (maps.Total() != (kNumMaps / 2)) {
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errx(1, "Internal Error: Incorrect total number of maps %zu, expected %zu.", maps.Total(),
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kNumMaps / 2);
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}
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maps.BenchmarkSetMapsFile(reparse_map.path);
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if (!maps.Reparse()) {
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errx(1, "Internal Error: reparse of second set of maps filed.");
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}
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if (maps.Total() != kNumMaps) {
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errx(1, "Internal Error: Incorrect total number of maps %zu, expected %zu.", maps.Total(),
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kNumMaps);
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}
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}
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}
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BENCHMARK(BM_local_updatable_maps_reparse);
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