ceph/src/boost/libs/smart_ptr/test/auto_ptr_rv_test.cpp

   1 #include <boost/config.hpp>
   2
   3 //
   4 //  auto_ptr_rv_test.cpp
   5 //
   6 //  Copyright (c) 2006 Peter Dimov
   7 //
   8 // Distributed under the Boost Software License, Version 1.0.
   9 // See accompanying file LICENSE_1_0.txt or copy at
  10 // http://www.boost.org/LICENSE_1_0.txt
  11 //
  12
  13 #if defined( BOOST_NO_AUTO_PTR )
  14
  15 int main()
  16 {
  17 }
  18
  19 #else
  20
  21 #include <boost/shared_ptr.hpp>
  22 #include <boost/detail/lightweight_test.hpp>
  23 #include <memory>
  24
  25 struct X
  26 {
  27     static long instances;
  28
  29     X()
  30     {
  31         ++instances;
  32     }
  33
  34     ~X()
  35     {
  36         --instances;
  37     }
  38
  39     static std::auto_ptr<X> create()
  40     {
  41         return std::auto_ptr<X>( new X );
  42     }
  43
  44 private:
  45
  46     X( X const & );
  47     X & operator=( X const & );
  48 };
  49
  50 long X::instances = 0;
  51
  52 int main()
  53 {
  54     BOOST_TEST( X::instances == 0 );
  55
  56     {
  57         boost::shared_ptr<X> p( X::create() );
  58         BOOST_TEST( X::instances == 1 );
  59
  60         p = X::create();
  61         BOOST_TEST( X::instances == 1 );
  62
  63         p.reset();
  64         BOOST_TEST( X::instances == 0 );
  65
  66         p = X::create();
  67         BOOST_TEST( X::instances == 1 );
  68     }
  69
  70     BOOST_TEST( X::instances == 0 );
  71
  72     {
  73         boost::shared_ptr<X const> p( X::create() );
  74         BOOST_TEST( X::instances == 1 );
  75
  76         p = X::create();
  77         BOOST_TEST( X::instances == 1 );
  78
  79         p.reset();
  80         BOOST_TEST( X::instances == 0 );
  81
  82         p = X::create();
  83         BOOST_TEST( X::instances == 1 );
  84     }
  85
  86     BOOST_TEST( X::instances == 0 );
  87
  88     {
  89         boost::shared_ptr<void> p( X::create() );
  90         BOOST_TEST( X::instances == 1 );
  91
  92         p = X::create();
  93         BOOST_TEST( X::instances == 1 );
  94
  95         p.reset();
  96         BOOST_TEST( X::instances == 0 );
  97
  98         p = X::create();
  99         BOOST_TEST( X::instances == 1 );
 100     }
 101
 102     BOOST_TEST( X::instances == 0 );
 103
 104     {
 105         boost::shared_ptr<void const> p( X::create() );
 106         BOOST_TEST( X::instances == 1 );
 107
 108         p = X::create();
 109         BOOST_TEST( X::instances == 1 );
 110
 111         p.reset();
 112         BOOST_TEST( X::instances == 0 );
 113
 114         p = X::create();
 115         BOOST_TEST( X::instances == 1 );
 116     }
 117
 118     BOOST_TEST( X::instances == 0 );
 119
 120     return boost::report_errors();
 121 }
 122
 123 #endif // #if defined( BOOST_NO_AUTO_PTR )