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132 lines
4.4 KiB
132 lines
4.4 KiB
/*
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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 <inttypes.h>
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#include <malloc.h>
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#include <stdint.h>
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#include <string>
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#include <vector>
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#include <benchmark/benchmark.h>
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#include <unwindstack/Elf.h>
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#include <unwindstack/Memory.h>
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#include "Utils.h"
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static void BenchmarkSymbolLookup(benchmark::State& state, std::vector<uint64_t> offsets,
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std::string elf_file, bool expect_found, uint32_t runs = 1) {
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#if defined(__BIONIC__)
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uint64_t rss_bytes = 0;
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#endif
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uint64_t alloc_bytes = 0;
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for (auto _ : state) {
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state.PauseTiming();
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#if defined(__BIONIC__)
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mallopt(M_PURGE, 0);
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uint64_t rss_bytes_before = 0;
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GatherRss(&rss_bytes_before);
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#endif
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uint64_t alloc_bytes_before = mallinfo().uordblks;
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state.ResumeTiming();
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unwindstack::Elf elf(unwindstack::Memory::CreateFileMemory(elf_file, 0).release());
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if (!elf.Init() || !elf.valid()) {
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errx(1, "Internal Error: Cannot open elf.");
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}
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unwindstack::SharedString name;
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uint64_t offset;
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for (size_t i = 0; i < runs; i++) {
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for (auto pc : offsets) {
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bool found = elf.GetFunctionName(pc, &name, &offset);
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if (expect_found && !found) {
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errx(1, "expected pc 0x%" PRIx64 " present, but not found.", pc);
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} else if (!expect_found && found) {
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errx(1, "expected pc 0x%" PRIx64 " not present, but found.", pc);
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}
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}
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}
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state.PauseTiming();
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#if defined(__BIONIC__)
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mallopt(M_PURGE, 0);
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#endif
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alloc_bytes += mallinfo().uordblks - alloc_bytes_before;
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#if defined(__BIONIC__)
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GatherRss(&rss_bytes);
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rss_bytes -= rss_bytes_before;
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#endif
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state.ResumeTiming();
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}
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#if defined(__BIONIC__)
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state.counters["RSS_BYTES"] = rss_bytes / static_cast<double>(state.iterations());
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#endif
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state.counters["ALLOCATED_BYTES"] = alloc_bytes / static_cast<double>(state.iterations());
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}
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static void BenchmarkSymbolLookup(benchmark::State& state, uint64_t pc, std::string elf_file,
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bool expect_found, uint32_t runs = 1) {
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BenchmarkSymbolLookup(state, std::vector<uint64_t>{pc}, elf_file, expect_found, runs);
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}
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void BM_elf_and_symbol_not_present(benchmark::State& state) {
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BenchmarkSymbolLookup(state, 0, GetElfFile(), false);
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}
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BENCHMARK(BM_elf_and_symbol_not_present);
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void BM_elf_and_symbol_find_single(benchmark::State& state) {
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BenchmarkSymbolLookup(state, 0x22b2bc, GetElfFile(), true);
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}
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BENCHMARK(BM_elf_and_symbol_find_single);
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void BM_elf_and_symbol_find_single_many_times(benchmark::State& state) {
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BenchmarkSymbolLookup(state, 0x22b2bc, GetElfFile(), true, 4096);
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}
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BENCHMARK(BM_elf_and_symbol_find_single_many_times);
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void BM_elf_and_symbol_find_multiple(benchmark::State& state) {
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BenchmarkSymbolLookup(state,
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std::vector<uint64_t>{0x22b2bc, 0xd5d30, 0x1312e8, 0x13582e, 0x1389c8},
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GetElfFile(), true);
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}
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BENCHMARK(BM_elf_and_symbol_find_multiple);
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void BM_elf_and_symbol_not_present_from_sorted(benchmark::State& state) {
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BenchmarkSymbolLookup(state, 0, GetSymbolSortedElfFile(), false);
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}
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BENCHMARK(BM_elf_and_symbol_not_present_from_sorted);
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void BM_elf_and_symbol_find_single_from_sorted(benchmark::State& state) {
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BenchmarkSymbolLookup(state, 0x138638, GetSymbolSortedElfFile(), true);
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}
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BENCHMARK(BM_elf_and_symbol_find_single_from_sorted);
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void BM_elf_and_symbol_find_single_many_times_from_sorted(benchmark::State& state) {
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BenchmarkSymbolLookup(state, 0x138638, GetSymbolSortedElfFile(), true, 4096);
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}
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BENCHMARK(BM_elf_and_symbol_find_single_many_times_from_sorted);
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void BM_elf_and_symbol_find_multiple_from_sorted(benchmark::State& state) {
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BenchmarkSymbolLookup(state,
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std::vector<uint64_t>{0x138638, 0x84350, 0x14df18, 0x1f3a38, 0x1f3ca8},
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GetSymbolSortedElfFile(), true);
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}
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BENCHMARK(BM_elf_and_symbol_find_multiple_from_sorted);
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