libstdc++-v3/testsuite/performance/25_algorithms/equal_deque_iterators.cc

// Copyright (C) 2019-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#include <deque>
#include <vector>

#include <testsuite_performance.h>

int main()
{
  using namespace __gnu_test;

  time_counter time;
  resource_counter resource;

  const std::deque<int> data(3000, 1);

  std::deque<int> d(3000, 1);

  start_counters(time, resource);
  for (int i = 0; i < 1000; ++i)
    for (int j = 0; j < 3000; ++j)
      std::equal(data.begin(), data.begin() + j, d.begin());
  stop_counters(time, resource);
  report_performance(__FILE__, "deque vs deque", time, resource);
  clear_counters(time, resource);

  std::vector<int> v(3000, 1);

  start_counters(time, resource);
  for (int i = 0; i < 1000; ++i)
    for (int j = 0; j < 3000; ++j)
      std::equal(data.begin(), data.begin() + j, v.begin());
  stop_counters(time, resource);
  report_performance(__FILE__, "deque vs vector", time, resource);
  clear_counters(time, resource);

  d.assign(3000, 1);

  start_counters(time, resource);
  for (int i = 0; i < 1000; ++i)
    for (int j = 0; j < 3000; ++j)
      std::equal(v.begin(), v.begin() + j, d.begin());
  stop_counters(time, resource);
  report_performance(__FILE__, "vector vs deque", time, resource);
  clear_counters(time, resource);

  std::vector<char> cv(3000, 1);

  start_counters(time, resource);
  for (int i = 0; i < 1000; ++i)
    for (int j = 0; j < 3000; ++j)
      std::equal(data.begin(), data.begin() + j, cv.begin());
  stop_counters(time, resource);
  report_performance(__FILE__, "int deque vs char vector", time, resource);
  clear_counters(time, resource);

  d.assign(3000, 1);

  start_counters(time, resource);
  for (int i = 0; i < 1000; ++i)
    for (int j = 0; j < 3000; ++j)
      std::equal(cv.begin(), cv.begin() + j, d.begin());
  stop_counters(time, resource);
  report_performance(__FILE__, "char vector vs int deque", time, resource);

  return 0;
}