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

   1 //
   2 // Copyright (C) 2004 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  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 #include <testsuite_hooks.h>
  27
  28 static size_t count;
  29
  30 struct count_check
  31 {
  32   count_check() {}
  33   ~count_check()
  34   {
  35     if (count != 0)
  36       {
  37         // NB: __mt_allocator doesn't clean itself up. Thus, this will
  38         // not be zero.
  39       }
  40   }
  41 };
  42
  43 // First.
  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   if (count == 0)
  63     printf("All memory released \n");
  64   else
  65     printf("%u allocations to be released \n", count);
  66   free(p);
  67 }
  68
  69 typedef std::string value_t;
  70 using __gnu_cxx::__pool;
  71 using __gnu_cxx::__per_type_pool_policy;
  72 typedef __per_type_pool_policy<value_t, __pool, false> policy_type;
  73 typedef __gnu_cxx::__mt_alloc<value_t, policy_type> allocator_type;
  74 typedef std::char_traits<value_t> traits_type;
  75 typedef std::list<value_t, allocator_type> list_type;
  76
  77 // Second.
  78 list_type l;
  79
  80 int main()
  81 {
  82   l.push_back("bayou bend");
  83   return 0;
  84 }