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Update benchmark project for code changes + enable ARM64 build
By design the benchmark project is not build as it relies on Google Benchmark that is retrieved using vcpkg. Vcpkg is now part of Visual Studio 2022, so building with VS 2022 works. One of the build steps of the CI pipeline build CharLS however with VS 2019 to ensure that VS 2019 still can be used. Enabled benchmark in the solution file for x86 and X64 would break VS 2019. ARM64 build are only support in VS 2022, so enabling that version doesn't break VS 2019.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // Copyright (c) Team CharLS. | ||
| // SPDX-License-Identifier: BSD-3-Clause | ||
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| #include <benchmark/benchmark.h> | ||
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| #include "../include/charls/charls.hpp" | ||
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| #include <filesystem> | ||
| #include <fstream> | ||
| #include <iomanip> | ||
| #include <iostream> | ||
| #include <vector> | ||
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| #pragma warning(disable : 26409) // Avoid calling new explicitly (triggered by BENCHMARK macro) | ||
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| using namespace charls; | ||
| using std::byte; | ||
| using std::ifstream; | ||
| using std::ios; | ||
| using std::vector; | ||
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| template<typename Container> | ||
| void read(std::istream& input, Container& destination) | ||
| { | ||
| input.read(reinterpret_cast<char*>(destination.data()), static_cast<std::streamsize>(destination.size())); | ||
| } | ||
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| vector<byte> read_file(const char* filename, long offset = 0, size_t bytes = 0) | ||
| try | ||
| { | ||
| ifstream input; | ||
| input.exceptions(ios::eofbit | ios::failbit | ios::badbit); | ||
| input.open(filename, ios::in | ios::binary); | ||
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| input.seekg(0, ios::end); | ||
| const auto byte_count_file{static_cast<int>(input.tellg())}; | ||
| input.seekg(offset, ios::beg); | ||
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| if (offset < 0) | ||
| { | ||
| offset = static_cast<long>(byte_count_file - bytes); | ||
| } | ||
| if (bytes == 0) | ||
| { | ||
| bytes = static_cast<size_t>(byte_count_file) - offset; | ||
| } | ||
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| vector<byte> buffer(bytes); | ||
| read(input, buffer); | ||
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| return buffer; | ||
| } | ||
| catch (const std::ifstream::failure&) | ||
| { | ||
| std::cout << "Failed to open/read file: " << std::filesystem::absolute(filename) << "\n"; | ||
| throw; | ||
| } | ||
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| static void bm_decode(benchmark::State& state) | ||
| { | ||
| const auto source{read_file("d:/benchmark-test-image.jls")}; | ||
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| // Pre-allocate the destination outside the measurement loop. | ||
| // std::vector initializes its elements and this step needs to be excluded from the measurement. | ||
| vector<byte> destination(jpegls_decoder{source, true}.get_destination_size()); | ||
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| for (const auto _ : state) | ||
| { | ||
| jpegls_decoder decoder(source.data(), source.size()); | ||
| decoder.decode(destination); | ||
| } | ||
| } | ||
| BENCHMARK(bm_decode); |
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