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// Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

#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;

}