1// 2004-10-10  Paolo Carlini  <pcarlini@suse.de>
2
3// Copyright (C) 2004-2015 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10//
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15//
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20// 20.4.1.1 allocator members
21
22#include <ext/pool_allocator.h>
23
24struct small
25{
26  char c[16];
27};
28
29struct big
30{
31  char c[64];
32};
33
34void*
35operator new(size_t n) throw(std::bad_alloc)
36{
37  static bool first = true;
38  if (!first)
39    throw std::bad_alloc();
40  first = false;
41  return std::malloc(n);
42}
43
44// http://gcc.gnu.org/ml/libstdc++/2004-10/msg00098.html
45void test01()
46{
47  using __gnu_cxx::__pool_alloc;
48
49  __pool_alloc<big> alloc_big;
50  alloc_big.allocate(1);
51
52  // The constant 20 comes from __pool_alloc_base::_M_refill. See
53  // also __pool_alloc_base::_M_allocate_chunk.
54  __pool_alloc<small> alloc_small;
55  for (unsigned int i = 0; i < 20 * sizeof(big) / sizeof(small) + 1; ++i)
56    alloc_small.allocate(1);
57}
58
59int main()
60{
61  test01();
62}
63