old-autovect-branch/libstdc++-v3/testsuite/tr1/2_general_utilities/memory/shared_ptr/cons/copy.cc

   1 // Copyright (C) 2005 Free Software Foundation
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 2, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
  20
  21 #include <tr1/memory>
  22 #include <testsuite_hooks.h>
  23
  24 struct A
  25 {
  26   A() { ++ctor_count; }
  27   virtual ~A() { ++dtor_count; }
  28   static long ctor_count;
  29   static long dtor_count;
  30 };
  31 long A::ctor_count = 0;
  32 long A::dtor_count = 0;
  33
  34 struct B : A
  35 {
  36   B() { ++ctor_count; }
  37   virtual ~B() { ++dtor_count; }
  38   static long ctor_count;
  39   static long dtor_count;
  40 };
  41 long B::ctor_count = 0;
  42 long B::dtor_count = 0;
  43
  44 void deleter(A* p) { delete p; }
  45
  46 struct reset_count_struct
  47 {
  48   ~reset_count_struct()
  49   {
  50     A::ctor_count = 0;
  51     A::dtor_count = 0;
  52     B::ctor_count = 0;
  53     B::dtor_count = 0;
  54   }
  55 };
  56
  57 // 2.2.3.1 shared_ptr constructors [tr.util.smartptr.shared.const]
  58
  59 // Copy construction
  60 int test01()
  61 {
  62   reset_count_struct __attribute__((unused)) reset;
  63   bool test __attribute__((unused)) = true;
  64
  65   std::tr1::shared_ptr<A> a1;
  66   std::tr1::shared_ptr<A> a2(a1);
  67   VERIFY( a2.use_count() == 0 );
  68   VERIFY( A::ctor_count == 0 );
  69   VERIFY( A::dtor_count == 0 );
  70   VERIFY( B::ctor_count == 0 );
  71   VERIFY( B::dtor_count == 0 );
  72
  73   return 0;
  74 }
  75
  76 int
  77 test02()
  78 {
  79   reset_count_struct __attribute__((unused)) reset;
  80   bool test __attribute__((unused)) = true;
  81
  82   std::tr1::shared_ptr<A> a1(new A);
  83   std::tr1::shared_ptr<A> a2(a1);
  84   VERIFY( a2.use_count() == 2 );
  85   VERIFY( A::ctor_count == 1 );
  86   VERIFY( A::dtor_count == 0 );
  87   VERIFY( B::ctor_count == 0 );
  88   VERIFY( B::dtor_count == 0 );
  89
  90   return 0;
  91 }
  92
  93 int
  94 test03()
  95 {
  96   reset_count_struct __attribute__((unused)) reset;
  97   bool test __attribute__((unused)) = true;
  98
  99   std::tr1::shared_ptr<B> b(new B);
 100   std::tr1::shared_ptr<A> a(b);
 101   VERIFY( a.use_count() == 2 );
 102   VERIFY( A::ctor_count == 1 );
 103   VERIFY( A::dtor_count == 0 );
 104   VERIFY( B::ctor_count == 1 );
 105   VERIFY( B::dtor_count == 0 );
 106
 107   return 0;
 108 }
 109
 110 int
 111 test04()
 112 {
 113   reset_count_struct __attribute__((unused)) reset;
 114   bool test __attribute__((unused)) = true;
 115
 116   std::tr1::shared_ptr<B> b(new B, &deleter);
 117   std::tr1::shared_ptr<A> a(b);
 118   VERIFY( a.use_count() == 2 );
 119   VERIFY( A::ctor_count == 1 );
 120   VERIFY( A::dtor_count == 0 );
 121   VERIFY( B::ctor_count == 1 );
 122   VERIFY( B::dtor_count == 0 );
 123
 124   return 0;
 125 }
 126
 127 int
 128 main()
 129 {
 130   test01();
 131   test02();
 132   test03();
 133   test04();
 134   return 0;
 135 }