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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libstdc++-v3/] [testsuite/] [ext/] [pool_allocator/] [allocate_chunk.cc] - Rev 565
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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(); }
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