libstdc++-v3/testsuite/ext/mt_allocator/deallocate_global-4.cc

   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 <list>
  23 #include <string>
  24 #include <stdexcept>
  25 #include <ext/mt_allocator.h>
  26
  27 static size_t count;
  28
  29 struct count_check
  30 {
  31   count_check() { }
  32   ~count_check()
  33   {
  34     // NB: __mt_allocator doesn't clean itself up. Thus, this will not
  35     // be zero.
  36     if (count != 0)
  37       {
  38         //throw std::runtime_error("allocation/deallocation count isn't zero");
  39         printf("allocation/deallocation count is %zu \n", count);
  40       }
  41   }
  42 };
  43
  44 static count_check check;
  45
  46 void* operator new(size_t size) throw(std::bad_alloc)
  47 {
  48   printf("operator new is called \n");
  49   void* p = malloc(size);
  50   if (p == NULL)
  51     throw std::bad_alloc();
  52   count++;
  53   return p;
  54 }
  55
  56 void operator delete(void* p) throw()
  57 {
  58   printf("operator delete is called \n");
  59   if (p == NULL)
  60     return;
  61   count--;
  62 }
  63
  64 typedef std::string value_t;
  65 using __gnu_cxx::__pool;
  66 using __gnu_cxx::__per_type_pool_policy;
  67 typedef __per_type_pool_policy<value_t, __pool, false> policy_type;
  68 typedef __gnu_cxx::__mt_alloc<value_t, policy_type> allocator_type;
  69 typedef std::char_traits<value_t> traits_type;
  70 typedef std::list<value_t, allocator_type> list_type;
  71
  72 list_type l;
  73
  74 int main()
  75 {
  76   l.push_back("bayou bend");
  77   return 0;
  78 }