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feat(c++): Add benchmark for performance evaluation (#2023)
<!-- **Thanks for contributing to Fury.** **If this is your first time opening a PR on fury, you can refer to [CONTRIBUTING.md](https://github.com/apache/fury/blob/main/CONTRIBUTING.md).** Contribution Checklist - The **Apache Fury (incubating)** community has restrictions on the naming of pr titles. You can also find instructions in [CONTRIBUTING.md](https://github.com/apache/fury/blob/main/CONTRIBUTING.md). - Fury has a strong focus on performance. If the PR you submit will have an impact on performance, please benchmark it first and provide the benchmark result here. --> ## What does this PR do? In the process of project function improvement, if there is no appropriate benchmark to test, it is difficult to judge the quality of this new function. Now, I decided to add a new benchmark to enhance FuryCpp <img width="445" alt="image" src="https://github.com/user-attachments/assets/c496bc6f-ca43-437e-961a-ba8a8c71b027" /> This is a preliminary plan. Do you have any better suggestions for using benchmark.cc? Then, on the use of `simd` to enhance FuryCpp, I will implement in the next `pr`. <!-- Describe the purpose of this PR. --> ## Related issues relate #2022 <!-- Is there any related issue? Please attach here. - #xxxx0 - #xxxx1 - #xxxx2 --> ## Does this PR introduce any user-facing change? <!-- If any user-facing interface changes, please [open an issue](https://github.com/apache/fury/issues/new/choose) describing the need to do so and update the document if necessary. --> - [ ] Does this PR introduce any public API change? - [ ] Does this PR introduce any binary protocol compatibility change? ## Benchmark google/benchmark version v1.9.1 <!-- When the PR has an impact on performance (if you don't know whether the PR will have an impact on performance, you can submit the PR first, and if it will have impact on performance, the code reviewer will explain it), be sure to attach a benchmark data here. -->
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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. | ||
| */ | ||
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| #include <benchmark/benchmark.h> | ||
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| #include <codecvt> | ||
| #include <locale> | ||
| #include <random> | ||
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| #include "string_util.h" | ||
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| #include <cstring> | ||
| #include <string> | ||
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| // Function to generate a random UTF-16 string | ||
| std::u16string generateRandomUTF16String(size_t length) { | ||
| const char charset[] = | ||
| "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; | ||
| std::default_random_engine rng(std::random_device{}()); | ||
| std::uniform_int_distribution<> dist(0, sizeof(charset) - 2); | ||
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| std::u16string result; | ||
| result.reserve(length); | ||
| for (size_t i = 0; i < length; ++i) { | ||
| result += static_cast<char16_t>(charset[dist(rng)]); | ||
| } | ||
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| return result; | ||
| } | ||
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| std::vector<std::u16string> generateUTF16String(size_t num_tests) { | ||
| std::vector<std::u16string> test_strings; | ||
| for (size_t i = 0; i < num_tests; ++i) { | ||
| test_strings.push_back(generateRandomUTF16String(num_tests)); | ||
| } | ||
| return test_strings; | ||
| } | ||
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| const std::vector<std::u16string> test_strings = generateUTF16String(1000); | ||
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| // UTF16 to UTF8 using the standard library | ||
| std::string utf16ToUtf8StandardLibrary(const std::u16string &utf16) { | ||
| std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert; | ||
| return convert.to_bytes(utf16); | ||
| } | ||
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| // UTF16 to UTF8 baseline conversion (without SIMD) | ||
| std::string utf16ToUtf8BaseLine(const std::u16string &utf16, | ||
| bool is_little_endian = true) { | ||
| size_t utf16_length = utf16.length(); | ||
| size_t utf8_length = utf16_length * 3; | ||
| std::string utf8_result(utf8_length, '\0'); | ||
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| size_t i = 0, j = 0; | ||
| while (i < utf16_length) { | ||
| char16_t utf16_char = utf16[i++]; | ||
| if (utf16_char < 0x80) { | ||
| utf8_result[j++] = static_cast<char>(utf16_char); | ||
| } else if (utf16_char < 0x800) { | ||
| utf8_result[j++] = static_cast<char>(0xC0 | (utf16_char >> 6)); | ||
| utf8_result[j++] = static_cast<char>(0x80 | (utf16_char & 0x3F)); | ||
| } else { | ||
| utf8_result[j++] = static_cast<char>(0xE0 | (utf16_char >> 12)); | ||
| utf8_result[j++] = static_cast<char>(0x80 | ((utf16_char >> 6) & 0x3F)); | ||
| utf8_result[j++] = static_cast<char>(0x80 | (utf16_char & 0x3F)); | ||
| } | ||
| } | ||
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| utf8_result.resize(j); | ||
| return utf8_result; | ||
| } | ||
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| // Benchmark function for Standard Library UTF-16 to UTF-8 conversion | ||
| static void BM_StandardLibrary(benchmark::State &state) { | ||
| for (auto _ : state) { | ||
| for (const auto &str : test_strings) { | ||
| std::string utf8 = utf16ToUtf8StandardLibrary(str); | ||
| } | ||
| } | ||
| } | ||
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| // Benchmark function for Baseline UTF-16 to UTF-8 conversion | ||
| static void BM_BaseLine(benchmark::State &state) { | ||
| for (auto _ : state) { | ||
| for (const auto &str : test_strings) { | ||
| std::string utf8 = utf16ToUtf8BaseLine(str, true); | ||
| } | ||
| } | ||
| } | ||
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| // Benchmark function for SIMD-based UTF-16 to UTF-8 conversion | ||
| static void BM_SIMD(benchmark::State &state) { | ||
| for (auto _ : state) { | ||
| for (const auto &str : test_strings) { | ||
| std::string utf8 = fury::utf16ToUtf8(str, true); | ||
| } | ||
| } | ||
| } | ||
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| BENCHMARK(BM_StandardLibrary); | ||
| BENCHMARK(BM_BaseLine); | ||
| BENCHMARK(BM_SIMD); | ||
| BENCHMARK_MAIN(); |
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