mirror of https://github.com/tfussell/xlnt
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
// Copyright (c) 2017-2018 Thomas Fussell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE
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//
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// @license: http://www.opensource.org/licenses/mit-license.php
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// @author: see AUTHORS file
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#include <chrono>
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#include <iostream>
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#include <helpers/timing.hpp>
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#include <xlnt/xlnt.hpp>
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namespace {
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// Create a worksheet with variable width rows. Because data must be
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// serialised row by row it is often the width of the rows which is most
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// important.
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void writer(int cols, int rows)
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{
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xlnt::workbook wb;
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auto ws = wb.create_sheet();
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for(int index = 0; index < rows; index++)
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{
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if (rows >= 10 && (index + 1) % (rows / 10) == 0)
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{
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std::string progress = std::string((index + 1) / (1 + rows / 10), '.');
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std::cout << "\r" << progress;
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}
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for (int i = 0; i < cols; i++)
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{
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ws.cell(xlnt::cell_reference(i + 1, index + 1)).value(i);
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}
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}
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std::cout << '\n';
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auto filename = "benchmark.xlsx";
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wb.save(filename);
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}
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// Create a timeit call to a function and pass in keyword arguments.
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// The function is called twice, once using the standard workbook, then with the optimised one.
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// Time from the best of three is taken.
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void timer(std::function<void(int, int)> fn, int cols, int rows)
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{
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const auto repeat = std::size_t(3);
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std::chrono::duration<double, std::milli> time{};
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std::cout << cols << " cols " << rows << " rows" << std::endl;
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fn(rows, cols); // 1 cold run
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for(int i = 0; i < repeat; i++)
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{
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auto start = std::chrono::high_resolution_clock::now();
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fn(cols, rows);
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time += std::chrono::high_resolution_clock::now() - start;
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}
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std::cout << time.count() / repeat << " ms per iteration" << '\n' << '\n';
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}
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} // namespace
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int main()
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{
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timer(&writer, 10000, 1);
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timer(&writer, 1000, 10);
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timer(&writer, 100, 100);
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timer(&writer, 10, 1000);
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timer(&writer, 1, 10000);
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return 0;
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}
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