1// 2// Copyright (C) 2004, 2005 Free Software Foundation, Inc. 3// 4// This file is part of the GNU ISO C++ Library. This library is free 5// software; you can redistribute it and/or modify it under the 6// terms of the GNU General Public License as published by the 7// Free Software Foundation; either version 2, or (at your option) 8// any later version. 9// 10// This library is distributed in the hope that it will be useful, 11// but WITHOUT ANY WARRANTY; without even the implied warranty of 12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13// GNU General Public License for more details. 14// 15// You should have received a copy of the GNU General Public License along 16// with this library; see the file COPYING. If not, write to the Free 17// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 18// USA. 19 20// 20.4.1.1 allocator members 21 22#include <string> 23#include <stdexcept> 24#include <ext/mt_allocator.h> 25 26static size_t count; 27 28struct count_check 29{ 30 count_check() { } 31 ~count_check() 32 { 33 // NB: __mt_allocator doesn't clean itself up. Thus, this will not 34 // be zero. 35 if (count != 0) 36 { 37 //throw std::runtime_error("allocation/deallocation count isn't zero"); 38 printf("allocation/deallocation count is %zu \n", count); 39 } 40 } 41}; 42 43static count_check check; 44 45void* operator new(size_t size) throw(std::bad_alloc) 46{ 47 printf("operator new is called \n"); 48 void* p = malloc(size); 49 if (p == NULL) 50 throw std::bad_alloc(); 51 count++; 52 return p; 53} 54 55void operator delete(void* p) throw() 56{ 57 printf("operator delete is called \n"); 58 if (p == NULL) 59 return; 60 count--; 61} 62 63typedef char value_type; 64typedef std::char_traits<value_type> traits_type; 65using __gnu_cxx::__pool; 66using __gnu_cxx::__per_type_pool_policy; 67typedef __per_type_pool_policy<value_type, __pool, true> policy_type; 68typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type; 69typedef std::basic_string<value_type, traits_type, allocator_type> string_type; 70 71int main() 72{ 73 string_type s; 74 s += "bayou bend"; 75 return 0; 76} 77