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- //
- // sp_unique_ptr_test.cpp
- //
- // Copyright (c) 2012 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/shared_ptr.hpp>
- #include <boost/enable_shared_from_this.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/type_traits/remove_reference.hpp>
- #include <memory>
- #include <utility>
- #if !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
- struct X: public boost::enable_shared_from_this< X >
- {
- static int instances;
- X()
- {
- ++instances;
- }
- ~X()
- {
- --instances;
- }
- private:
- X( X const & );
- X & operator=( X const & );
- };
- int X::instances = 0;
- struct Y
- {
- static int instances;
- bool deleted_;
- Y(): deleted_( false )
- {
- ++instances;
- }
- ~Y()
- {
- BOOST_TEST( deleted_ );
- --instances;
- }
- private:
- Y( Y const & );
- Y & operator=( Y const & );
- };
- int Y::instances = 0;
- struct YD
- {
- void operator()( Y* p ) const
- {
- if( p )
- {
- p->deleted_ = true;
- delete p;
- }
- else
- {
- BOOST_ERROR( "YD::operator()(0) called" );
- }
- }
- };
- template<class U, class T, class D> static void test_null_unique_ptr( std::unique_ptr<T, D> p1, std::unique_ptr<T, D> p2 )
- {
- BOOST_TEST( T::instances == 0 );
- boost::shared_ptr<U> sp( std::move( p1 ) );
- BOOST_TEST( sp.get() == 0 );
- BOOST_TEST( sp.use_count() == 0 );
- sp.reset( new T, typename boost::remove_reference<D>::type() );
- BOOST_TEST( sp.get() != 0 );
- BOOST_TEST( sp.use_count() == 1 );
- BOOST_TEST( T::instances == 1 );
- sp = std::move( p2 );
- BOOST_TEST( sp.get() == 0 );
- BOOST_TEST( sp.use_count() == 0 );
- BOOST_TEST( T::instances == 0 );
- }
- int main()
- {
- {
- BOOST_TEST( X::instances == 0 );
- std::unique_ptr<X> p( new X );
- BOOST_TEST( X::instances == 1 );
- boost::shared_ptr<X> p2( std::move( p ) );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- boost::shared_ptr<X> p3 = p2->shared_from_this();
- BOOST_TEST( p2 == p3 );
- BOOST_TEST( !(p2 < p3) && !(p3 < p2) );
- p2.reset();
- p3.reset();
- BOOST_TEST( X::instances == 0 );
- p2 = std::unique_ptr<X>( new X );
- BOOST_TEST( X::instances == 1 );
- p2 = std::unique_ptr<X>( new X );
- BOOST_TEST( X::instances == 1 );
- p2.reset();
- BOOST_TEST( X::instances == 0 );
- }
- {
- BOOST_TEST( X::instances == 0 );
- std::unique_ptr<X> p( new X );
- BOOST_TEST( X::instances == 1 );
- boost::shared_ptr<X const> p2( std::move( p ) );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- boost::shared_ptr<X const> p3 = p2->shared_from_this();
- BOOST_TEST( p2 == p3 );
- BOOST_TEST( !(p2 < p3) && !(p3 < p2) );
- p2.reset();
- p3.reset();
- BOOST_TEST( X::instances == 0 );
- p2 = std::unique_ptr<X>( new X );
- BOOST_TEST( X::instances == 1 );
- p2 = std::unique_ptr<X>( new X );
- BOOST_TEST( X::instances == 1 );
- p2.reset();
- BOOST_TEST( X::instances == 0 );
- }
- {
- BOOST_TEST( X::instances == 0 );
- std::unique_ptr<X> p( new X );
- BOOST_TEST( X::instances == 1 );
- boost::shared_ptr<void> p2( std::move( p ) );
- BOOST_TEST( X::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- p2.reset();
- BOOST_TEST( X::instances == 0 );
- p2 = std::unique_ptr<X>( new X );
- BOOST_TEST( X::instances == 1 );
- p2 = std::unique_ptr<X>( new X );
- BOOST_TEST( X::instances == 1 );
- p2.reset();
- BOOST_TEST( X::instances == 0 );
- }
- {
- BOOST_TEST( Y::instances == 0 );
- std::unique_ptr<Y, YD> p( new Y, YD() );
- BOOST_TEST( Y::instances == 1 );
- boost::shared_ptr<Y> p2( std::move( p ) );
- BOOST_TEST( Y::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- p2.reset();
- BOOST_TEST( Y::instances == 0 );
- p2 = std::unique_ptr<Y, YD>( new Y, YD() );
- BOOST_TEST( Y::instances == 1 );
- p2 = std::unique_ptr<Y, YD>( new Y, YD() );
- BOOST_TEST( Y::instances == 1 );
- p2.reset();
- BOOST_TEST( Y::instances == 0 );
- }
- {
- BOOST_TEST( Y::instances == 0 );
- YD yd;
- std::unique_ptr<Y, YD&> p( new Y, yd );
- BOOST_TEST( Y::instances == 1 );
- boost::shared_ptr<Y> p2( std::move( p ) );
- BOOST_TEST( Y::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- p2.reset();
- BOOST_TEST( Y::instances == 0 );
- p2 = std::unique_ptr<Y, YD&>( new Y, yd );
- BOOST_TEST( Y::instances == 1 );
- p2 = std::unique_ptr<Y, YD&>( new Y, yd );
- BOOST_TEST( Y::instances == 1 );
- p2.reset();
- BOOST_TEST( Y::instances == 0 );
- }
- {
- BOOST_TEST( Y::instances == 0 );
- YD yd;
- std::unique_ptr<Y, YD const&> p( new Y, yd );
- BOOST_TEST( Y::instances == 1 );
- boost::shared_ptr<Y> p2( std::move( p ) );
- BOOST_TEST( Y::instances == 1 );
- BOOST_TEST( p.get() == 0 );
- p2.reset();
- BOOST_TEST( Y::instances == 0 );
- p2 = std::unique_ptr<Y, YD const&>( new Y, yd );
- BOOST_TEST( Y::instances == 1 );
- p2 = std::unique_ptr<Y, YD const&>( new Y, yd );
- BOOST_TEST( Y::instances == 1 );
- p2.reset();
- BOOST_TEST( Y::instances == 0 );
- }
- {
- test_null_unique_ptr<X>( std::unique_ptr<X>(), std::unique_ptr<X>() );
- test_null_unique_ptr<X const>( std::unique_ptr<X>(), std::unique_ptr<X>() );
- test_null_unique_ptr<void>( std::unique_ptr<X>(), std::unique_ptr<X>() );
- test_null_unique_ptr<void const>( std::unique_ptr<X>(), std::unique_ptr<X>() );
- }
- {
- test_null_unique_ptr<Y>( std::unique_ptr<Y, YD>( 0, YD() ), std::unique_ptr<Y, YD>( 0, YD() ) );
- test_null_unique_ptr<Y const>( std::unique_ptr<Y, YD>( 0, YD() ), std::unique_ptr<Y, YD>( 0, YD() ) );
- test_null_unique_ptr<void>( std::unique_ptr<Y, YD>( 0, YD() ), std::unique_ptr<Y, YD>( 0, YD() ) );
- test_null_unique_ptr<void const>( std::unique_ptr<Y, YD>( 0, YD() ), std::unique_ptr<Y, YD>( 0, YD() ) );
- }
- {
- YD yd;
- test_null_unique_ptr<Y>( std::unique_ptr<Y, YD&>( 0, yd ), std::unique_ptr<Y, YD&>( 0, yd ) );
- test_null_unique_ptr<Y const>( std::unique_ptr<Y, YD&>( 0, yd ), std::unique_ptr<Y, YD&>( 0, yd ) );
- test_null_unique_ptr<void>( std::unique_ptr<Y, YD&>( 0, yd ), std::unique_ptr<Y, YD&>( 0, yd ) );
- test_null_unique_ptr<void const>( std::unique_ptr<Y, YD&>( 0, yd ), std::unique_ptr<Y, YD&>( 0, yd ) );
- }
- return boost::report_errors();
- }
- #else // !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
- int main()
- {
- return 0;
- }
- #endif
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