libstdc++-v3/testsuite/ext/throw_allocator/deallocate_global.cc

   1 //
   2 // Copyright (C) 2007 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 #include <string>
  21 #include <stdexcept>
  22 #include <ext/throw_allocator.h>
  23 #include <testsuite_hooks.h>
  24
  25 static size_t count;
  26
  27 struct count_check
  28 {
  29   count_check() {}
  30   ~count_check()
  31   {
  32     if (count != 0)
  33       throw std::runtime_error("count isn't zero");
  34   }
  35 };
  36
  37 static count_check check;
  38
  39 void* operator new(size_t size) throw(std::bad_alloc)
  40 {
  41   printf("operator new is called \n");
  42   void* p = malloc(size);
  43   if (p == NULL)
  44     throw std::bad_alloc();
  45   count++;
  46   return p;
  47 }
  48
  49 void operator delete(void* p) throw()
  50 {
  51   printf("operator delete is called \n");
  52   if (p == NULL)
  53     return;
  54   count--;
  55   if (count == 0)
  56     printf("All memory released \n");
  57   else
  58     printf("%lu allocations to be released \n",
  59            static_cast<unsigned long>(count));
  60   free(p);
  61 }
  62
  63 typedef char char_t;
  64 typedef std::char_traits<char_t> traits_t;
  65 typedef __gnu_cxx::throw_allocator<char_t> allocator_t;
  66 typedef std::basic_string<char_t, traits_t, allocator_t> string_t;
  67
  68 string_t s("bayou bend");
  69
  70 int main()
  71 {
  72   return 0;
  73 }