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// 2004-10-10  Paolo Carlini  <pcarlini@suse.de>

// Copyright (C) 2004, 2009 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/>.

// 20.4.1.1 allocator members

#include <ext/pool_allocator.h>

struct small

{

  char c[16];

};

struct big

{

  char c[64];

};

void*

operator new(size_t n) throw(std::bad_alloc)

{

  static bool first = true;

  if (!first)

    throw std::bad_alloc();

  first = false;

  return std::malloc(n);

}

// http://gcc.gnu.org/ml/libstdc++/2004-10/msg00098.html

void test01()

{

  using __gnu_cxx::__pool_alloc;

  __pool_alloc<big> alloc_big;

  alloc_big.allocate(1);

  // The constant 20 comes from __pool_alloc_base::_M_refill. See

  // also __pool_alloc_base::_M_allocate_chunk.

  __pool_alloc<small> alloc_small;

  for (unsigned int i = 0; i < 20 * sizeof(big) / sizeof(small) + 1; ++i)

    alloc_small.allocate(1);

}

int main()

{

  test01();

}