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95356df8 | 1 | // 2004-10-10 Paolo Carlini <pcarlini@suse.de> |
2 | ||
f1717362 | 3 | // Copyright (C) 2004-2016 Free Software Foundation, Inc. |
95356df8 | 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 | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
95356df8 | 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 | |
6bc9506f | 17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
95356df8 | 19 | |
20 | // 20.4.1.1 allocator members | |
21 | ||
22 | #include <ext/pool_allocator.h> | |
23 | ||
24 | struct small | |
25 | { | |
26 | char c[16]; | |
27 | }; | |
28 | ||
29 | struct big | |
30 | { | |
31 | char c[64]; | |
32 | }; | |
33 | ||
34 | void* | |
35 | operator 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 | |
45 | void 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; | |
16171c51 | 55 | for (unsigned int i = 0; i < 20 * sizeof(big) / sizeof(small) + 1; ++i) |
95356df8 | 56 | alloc_small.allocate(1); |
57 | } | |
58 | ||
59 | int main() | |
60 | { | |
61 | test01(); | |
62 | } |