xlnt/benchmarks/writer.cpp

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// Copyright (c) 2017 Thomas Fussell
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE
//
// @license: http://www.opensource.org/licenses/mit-license.php
// @author: see AUTHORS file
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#include <chrono>
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#include <iostream>
#include <helpers/timing.hpp>
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#include <xlnt/xlnt.hpp>
namespace {
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// Create a worksheet with variable width rows. Because data must be
// serialised row by row it is often the width of the rows which is most
// important.
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void writer(int cols, int rows)
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{
xlnt::workbook wb;
auto ws = wb.create_sheet();
for(int index = 0; index < rows; index++)
{
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if ((index + 1) % (rows / 10) == 0)
{
std::string progress = std::string((index + 1) / (1 + rows / 10), '.');
std::cout << "\r" << progress;
std::cout.flush();
}
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for (int i = 0; i < cols; i++)
{
ws.cell(xlnt::cell_reference(i + 1, index + 1)).value(i);
}
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}
std::cout << std::endl;
auto filename = "benchmark.xlsx";
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wb.save(filename);
}
// Create a timeit call to a function and pass in keyword arguments.
// The function is called twice, once using the standard workbook, then with the optimised one.
// 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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{
using xlnt::benchmarks::current_time;
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const auto repeat = std::size_t(3);
auto time = std::numeric_limits<std::size_t>::max();
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std::cout << cols << " cols " << rows << " rows" << std::endl;
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for(int i = 0; i < repeat; i++)
{
auto start = current_time();
fn(cols, rows);
time = std::min(current_time() - start, time);
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}
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std::cout << time / 1000.0 << std::endl;
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}
} // namespace
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int main()
{
timer(&writer, 100, 100);
timer(&writer, 1000, 100);
timer(&writer, 4000, 100);
timer(&writer, 8192, 100);
timer(&writer, 10, 10000);
timer(&writer, 4000, 1000);
return 0;
}