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// Copyright (C) 2004, 2009, 2011 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 <unistd.h>

#include <cstdio>

#include <fstream>

#include <testsuite_performance.h>

// libstdc++/11378

int main()

{

  using namespace std;

  using namespace __gnu_test;

  time_counter time;

  resource_counter resource;

  const int iterations = 500000;

  const int chunksize = 100;

  char* chunk = new char[chunksize];

  // C

  FILE* file = fopen("tmp", "w+");

  setvbuf(file, 0, _IONBF, 0);

  start_counters(time, resource);

  for (int i = 0; i < iterations; ++i)

    fwrite(chunk, 1, chunksize, file);

  stop_counters(time, resource);

  fclose(file);

  report_performance(__FILE__, "C", time, resource);

  clear_counters(time, resource);

  // C unlocked

  file = fopen("tmp", "w+");

  setvbuf(file, 0, _IONBF, 0);

  start_counters(time, resource);

  for (int i = 0; i < iterations; ++i)

    fwrite_unlocked(chunk, 1, chunksize, file);

  stop_counters(time, resource);

  fclose(file);

  report_performance(__FILE__, "C unlocked", time, resource);

  clear_counters(time, resource);

  // C++

  filebuf buf;

  buf.pubsetbuf(0, 0);

  buf.open("tmp", ios_base::out | ios_base::in | ios_base::trunc);

  start_counters(time, resource);

  for (int i = 0; i < iterations; ++i)

    buf.sputn(chunk, chunksize);

  stop_counters(time, resource);

  report_performance(__FILE__, "C++", time, resource);

  unlink("tmp");

  delete [] chunk;

  return 0;

}