1// 2004-10-10  Paolo Carlini  <pcarlini@suse.de>
2
3// Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// 20.4.1.1 allocator members
22
23#include <ext/pool_allocator.h>
24
25struct small
26{
27  char c[16];
28};
29
30struct big
31{
32  char c[64];
33};
34
35void*
36operator new(size_t n) throw(std::bad_alloc)
37{
38  static bool first = true;
39  if (!first)
40    throw std::bad_alloc();
41  first = false;
42  return std::malloc(n);
43}
44
45// http://gcc.gnu.org/ml/libstdc++/2004-10/msg00098.html
46void test01()
47{
48  using __gnu_cxx::__pool_alloc;
49
50  __pool_alloc<big> alloc_big;
51  alloc_big.allocate(1);
52
53  // The constant 20 comes from __pool_alloc_base::_M_refill. See
54  // also __pool_alloc_base::_M_allocate_chunk.
55  __pool_alloc<small> alloc_small;
56  for (unsigned int i = 0; i < 20 * sizeof(big) / sizeof(small) + 1; ++i)
57    alloc_small.allocate(1);
58}
59
60int main()
61{
62  test01();
63}
64