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// This file is a part of toml++ and is subject to the the terms of the MIT license.
// Copyright (c) Mark Gillard <mark.gillard@outlook.com.au>
// See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
// SPDX-License-Identifier: MIT
// This example is just a short-n-shiny benchmark.
#include "examples.h"
#include <toml++/toml.h>
using namespace std::string_view_literals;
static constexpr size_t iterations = 10000;
int main(int argc, char** argv)
{
const auto file_path = std::string(argc > 1 ? std::string_view{ argv[1] } : "benchmark_data.toml"sv);
// read the file into a string first to remove file I/O from the benchmark
std::string file_content;
{
std::ifstream file(file_path, std::ifstream::in | std::ifstream::binary | std::ifstream::ate);
if (!file)
{
std::cerr << "File '"sv << file_path << "'could not be opened for reading\n"sv;
return -1;
}
const auto file_size = file.tellg();
if (file_size == -1)
{
std::cerr << "File '"sv << file_path << "' could not be opened for reading\n"sv;
return -1;
}
file.seekg(0, std::ifstream::beg);
file_content.resize(static_cast<size_t>(file_size));
file.read(file_content.data(), static_cast<std::streamsize>(file_size));
if (!file.eof() && !file)
{
std::cerr << "Failed to read contents of file '"sv << file_path << "'\n"sv;
return -1;
}
}
// parse once to make sure it isn't garbage
{
#if TOML_EXCEPTIONS
try
{
const auto result = toml::parse(file_content, file_path);
}
catch (const toml::parse_error& err)
{
std::cerr << err << "\n";
return 1;
}
#else
const auto result = toml::parse(file_content, file_path);
if (!result)
{
std::cerr << result.error() << "\n";
return 1;
}
#endif
}
// run the benchmark
std::cout << "Parsing '"sv << file_path << "' "sv << iterations << " times...\n"sv;
const auto start = std::chrono::steady_clock::now();
for (size_t i = 0; i < iterations; i++)
std::ignore = toml::parse(file_content, file_path);
const auto cumulative_sec =
std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::steady_clock::now() - start).count();
const auto mean_sec = cumulative_sec / static_cast<double>(iterations);
std::cout << " total: "sv << cumulative_sec << " s\n"sv
<< " mean: "sv << mean_sec << " s\n"sv;
return 0;
}
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