| // |
| // weak_from_this_test2.cpp |
| // |
| // Tests weak_from_this in a destructor |
| // |
| // Copyright (c) 2014, 2015 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/smart_ptr/enable_shared_from_this.hpp> |
| #include <boost/weak_ptr.hpp> |
| #include <boost/core/lightweight_test.hpp> |
| |
| class X: public boost::enable_shared_from_this< X > |
| { |
| private: |
| |
| boost::weak_ptr<X> px_; |
| |
| public: |
| |
| X() |
| { |
| boost::weak_ptr<X> p1 = weak_from_this(); |
| BOOST_TEST( p1._empty() ); |
| BOOST_TEST( p1.expired() ); |
| } |
| |
| void check() |
| { |
| boost::weak_ptr<X> p2 = weak_from_this(); |
| BOOST_TEST( !p2.expired() ); |
| |
| BOOST_TEST( p2.lock().get() == this ); |
| |
| px_ = p2; |
| } |
| |
| ~X() |
| { |
| boost::weak_ptr<X> p3 = weak_from_this(); |
| BOOST_TEST( p3.expired() ); |
| |
| BOOST_TEST( !(px_ < p3) && !(p3 < px_) ); |
| } |
| }; |
| |
| int main() |
| { |
| { |
| boost::shared_ptr< X > px( new X ); |
| px->check(); |
| } |
| |
| return boost::report_errors(); |
| } |