63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
// 2004-10-10 Paolo Carlini <pcarlini@suse.de>
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// Copyright (C) 2004, 2009 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// 20.4.1.1 allocator members
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#include <ext/pool_allocator.h>
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struct small
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{
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char c[16];
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};
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struct big
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{
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char c[64];
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};
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void*
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operator new(size_t n) throw(std::bad_alloc)
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{
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static bool first = true;
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if (!first)
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throw std::bad_alloc();
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first = false;
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return std::malloc(n);
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}
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// http://gcc.gnu.org/ml/libstdc++/2004-10/msg00098.html
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void test01()
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{
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using __gnu_cxx::__pool_alloc;
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__pool_alloc<big> alloc_big;
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alloc_big.allocate(1);
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// The constant 20 comes from __pool_alloc_base::_M_refill. See
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// also __pool_alloc_base::_M_allocate_chunk.
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__pool_alloc<small> alloc_small;
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for (unsigned int i = 0; i < 20 * sizeof(big) / sizeof(small) + 1; ++i)
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alloc_small.allocate(1);
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}
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int main()
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{
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test01();
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}
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