| // |
| // weak_ptr_move_test.cpp |
| // |
| // Copyright (c) 2007 Peter Dimov |
| // |
| // Distributed under the Boost Software License, Version 1.0. |
| // See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt |
| // |
| |
| #include <boost/weak_ptr.hpp> |
| #include <boost/detail/lightweight_test.hpp> |
| |
| #if defined( BOOST_HAS_RVALUE_REFS ) |
| |
| struct X |
| { |
| static long instances; |
| |
| X() |
| { |
| ++instances; |
| } |
| |
| ~X() |
| { |
| --instances; |
| } |
| |
| private: |
| |
| X( X const & ); |
| X & operator=( X const & ); |
| }; |
| |
| long X::instances = 0; |
| |
| int main() |
| { |
| BOOST_TEST( X::instances == 0 ); |
| |
| { |
| boost::shared_ptr<X> p_( new X ); |
| boost::weak_ptr<X> p( p_ ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p.use_count() == 1 ); |
| |
| boost::weak_ptr<X> p2( std::move( p ) ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p2.use_count() == 1 ); |
| BOOST_TEST( p.expired() ); |
| |
| boost::weak_ptr<void> p3( std::move( p2 ) ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p3.use_count() == 1 ); |
| BOOST_TEST( p2.expired() ); |
| |
| p_.reset(); |
| BOOST_TEST( X::instances == 0 ); |
| BOOST_TEST( p3.expired() ); |
| } |
| |
| { |
| boost::shared_ptr<X> p_( new X ); |
| boost::weak_ptr<X> p( p_ ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p.use_count() == 1 ); |
| |
| boost::weak_ptr<X> p2; |
| p2 = static_cast< boost::weak_ptr<X> && >( p ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p2.use_count() == 1 ); |
| BOOST_TEST( p.expired() ); |
| |
| boost::weak_ptr<void> p3; |
| p3 = std::move( p2 ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p3.use_count() == 1 ); |
| BOOST_TEST( p2.expired() ); |
| |
| p_.reset(); |
| BOOST_TEST( X::instances == 0 ); |
| BOOST_TEST( p3.expired() ); |
| } |
| |
| { |
| boost::shared_ptr<X> p_( new X ); |
| boost::weak_ptr<X> p( p_ ); |
| BOOST_TEST( X::instances == 1 ); |
| BOOST_TEST( p.use_count() == 1 ); |
| |
| boost::shared_ptr<X> p_2( new X ); |
| boost::weak_ptr<X> p2( p_2 ); |
| BOOST_TEST( X::instances == 2 ); |
| p2 = std::move( p ); |
| BOOST_TEST( X::instances == 2 ); |
| BOOST_TEST( p2.use_count() == 1 ); |
| BOOST_TEST( p.expired() ); |
| BOOST_TEST( p2.lock() != p_2 ); |
| |
| boost::shared_ptr<void> p_3( new X ); |
| boost::weak_ptr<void> p3( p_3 ); |
| BOOST_TEST( X::instances == 3 ); |
| p3 = std::move( p2 ); |
| BOOST_TEST( X::instances == 3 ); |
| BOOST_TEST( p3.use_count() == 1 ); |
| BOOST_TEST( p2.expired() ); |
| BOOST_TEST( p3.lock() != p_3 ); |
| } |
| |
| return boost::report_errors(); |
| } |
| |
| #else // !defined( BOOST_HAS_RVALUE_REFS ) |
| |
| int main() |
| { |
| return 0; |
| } |
| |
| #endif |