libstdc++-v3/testsuite/ext/malloc_allocator/deallocate_global.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 <string>
  23 #include <stdexcept>
  24 #include <ext/malloc_allocator.h>
  25 #include <testsuite_hooks.h>
  26
  27 static size_t count;
  28
  29 struct count_check
  30 {
  31   count_check() {}
  32   ~count_check()
  33   {
  34     if (count != 0)
  35       throw std::runtime_error("count isn't zero");
  36   }
  37 };
  38
  39 static count_check check;
  40
  41 void* operator new(size_t size) throw(std::bad_alloc)
  42 {
  43   printf("operator new is called \n");
  44   void* p = malloc(size);
  45   if (p == NULL)
  46     throw std::bad_alloc();
  47   count++;
  48   return p;
  49 }
  50
  51 void operator delete(void* p) throw()
  52 {
  53   printf("operator delete is called \n");
  54   if (p == NULL)
  55     return;
  56   count--;
  57   if (count == 0)
  58     printf("All memory released \n");
  59   else
  60     printf("%lu allocations to be released \n",
  61            static_cast<unsigned long>(count));
  62   free(p);
  63 }
  64
  65 typedef char char_t;
  66 typedef std::char_traits<char_t> traits_t;
  67 typedef __gnu_cxx::malloc_allocator<char_t> allocator_t;
  68 typedef std::basic_string<char_t, traits_t, allocator_t> string_t;
  69
  70 string_t s("bayou bend");
  71
  72 int main()
  73 {
  74   return 0;
  75 }