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- #include <boost/config.hpp>
- // shared_ptr_alias_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/detail/lightweight_test.hpp>
- #include <boost/shared_ptr.hpp>
- #include <utility>
- #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
- class incomplete;
- struct X
- {
- static long instances;
- int v_;
- explicit X( int v ): v_( v )
- {
- ++instances;
- }
- ~X()
- {
- v_ = 0;
- --instances;
- }
- private:
- X( X const & );
- X & operator=( X const & );
- };
- long X::instances = 0;
- int main()
- {
- BOOST_TEST( X::instances == 0 );
- {
- int m = 0;
- boost::shared_ptr< int > p;
- boost::shared_ptr< int > p2( std::move( p ), &m );
- BOOST_TEST( p2.get() == &m );
- BOOST_TEST( p2? true: false );
- BOOST_TEST( !!p2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- p2.reset( std::move( p ), 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p2? false: true );
- BOOST_TEST( !p2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- }
- {
- int m = 0;
- boost::shared_ptr< int > p( new int );
- boost::shared_ptr< int const > p2( std::move( p ), &m );
- BOOST_TEST( p2.get() == &m );
- BOOST_TEST( p2? true: false );
- BOOST_TEST( !!p2 );
- BOOST_TEST( p2.use_count() == 1 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- boost::shared_ptr< int volatile > p3;
- p2.reset( std::move( p3 ), 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p2? false: true );
- BOOST_TEST( !p2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p3.get() == 0 );
- BOOST_TEST( p3.use_count() == 0 );
- boost::shared_ptr< int const volatile > p4( new int );
- p2.reset( std::move( p4 ), &m );
- BOOST_TEST( p2.get() == &m );
- BOOST_TEST( p2.use_count() == 1 );
- BOOST_TEST( p4.get() == 0 );
- BOOST_TEST( p4.use_count() == 0 );
- }
- {
- boost::shared_ptr< int > p( new int );
- boost::shared_ptr< void const > p2( std::move( p ), 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p2? false: true );
- BOOST_TEST( !p2 );
- BOOST_TEST( p2.use_count() == 1 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- int m = 0;
- boost::shared_ptr< void volatile > p3;
- p2.reset( std::move( p3 ), &m );
- BOOST_TEST( p2.get() == &m );
- BOOST_TEST( p2? true: false );
- BOOST_TEST( !!p2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p3.get() == 0 );
- BOOST_TEST( p3.use_count() == 0 );
- boost::shared_ptr< void const volatile > p4( new int );
- p2.reset( std::move( p4 ), 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p2.use_count() == 1 );
- BOOST_TEST( p4.get() == 0 );
- BOOST_TEST( p4.use_count() == 0 );
- }
- {
- boost::shared_ptr< incomplete > p;
- boost::shared_ptr< incomplete > p2( std::move( p ), 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p2? false: true );
- BOOST_TEST( !p2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- p2.reset( std::move( p ), 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p2? false: true );
- BOOST_TEST( !p2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- }
- {
- boost::shared_ptr< X > p( new X( 5 ) ), q( p );
- boost::shared_ptr< int const > p2( std::move( q ), &q->v_ );
- BOOST_TEST( p2.get() == &p->v_ );
- BOOST_TEST( p2? true: false );
- BOOST_TEST( !!p2 );
- BOOST_TEST( p2.use_count() == p.use_count() );
- BOOST_TEST( !( p < p2 ) && !( p2 < p ) );
- BOOST_TEST( q.get() == 0 );
- BOOST_TEST( q.use_count() == 0 );
- p.reset();
- BOOST_TEST( *p2 == 5 );
- boost::shared_ptr< X const > p3( new X( 8 ) ), q3( p3 );
- p2.reset( std::move( q3 ), &q3->v_ );
- BOOST_TEST( p2.get() == &p3->v_ );
- BOOST_TEST( p2? true: false );
- BOOST_TEST( !!p2 );
- BOOST_TEST( p2.use_count() == p3.use_count() );
- BOOST_TEST( !( p3 < p2 ) && !( p2 < p3 ) );
- BOOST_TEST( q3.get() == 0 );
- BOOST_TEST( q3.use_count() == 0 );
- p3.reset();
- BOOST_TEST( *p2 == 8 );
- }
- {
- boost::shared_ptr< X > p( new X( 5 ) );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.unique() );
- BOOST_TEST( p->v_ == 5 );
- boost::shared_ptr< X > p2( std::move( p ), p.get() );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p2.unique() );
- BOOST_TEST( p2->v_ == 5 );
- boost::shared_ptr< int const > p3( std::move( p2 ), &p2->v_ );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p3.unique() );
- BOOST_TEST( *p3 == 5 );
- p3.reset();
- BOOST_TEST( X::instances == 0 );
- }
- {
- boost::shared_ptr< X > p( new X( 5 ) );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.unique() );
- BOOST_TEST( p->v_ == 5 );
- {
- boost::shared_ptr< X > p2(p);
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.get() == p2.get() );
- BOOST_TEST( p.use_count() == 2 );
- BOOST_TEST( p2.use_count() == 2 );
- boost::shared_ptr< int const > p3( std::move( p2 ), &p2->v_ );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.use_count() == 2 );
- BOOST_TEST( p2.use_count() == 0 );
- BOOST_TEST( p2.get() == 0 );
- BOOST_TEST( p3.use_count() == 2 );
- BOOST_TEST( p3.get() == &p->v_ );
- }
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.unique() );
- BOOST_TEST( p->v_ == 5 );
- }
- return boost::report_errors();
- }
- #else // defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
- int main()
- {
- return 0;
- }
- #endif
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