53 lines
1.0 KiB
C++
53 lines
1.0 KiB
C++
#include <boost/config.hpp>
|
|
|
|
//
|
|
// weak_from_this_test.cpp
|
|
//
|
|
// Copyright (c) 2002, 2003, 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/enable_shared_from_this.hpp>
|
|
#include <boost/shared_ptr.hpp>
|
|
#include <boost/weak_ptr.hpp>
|
|
#include <boost/detail/lightweight_test.hpp>
|
|
|
|
class V: public boost::enable_shared_from_this<V>
|
|
{
|
|
};
|
|
|
|
void test()
|
|
{
|
|
boost::shared_ptr<V> p( new V );
|
|
|
|
boost::weak_ptr<V> q = p;
|
|
BOOST_TEST( !q.expired() );
|
|
|
|
boost::weak_ptr<V> q2 = p->weak_from_this();
|
|
BOOST_TEST( !q2.expired() );
|
|
BOOST_TEST( !(q < q2) && !(q2 < q) );
|
|
|
|
V v2( *p );
|
|
|
|
boost::weak_ptr<V> q3 = v2.weak_from_this();
|
|
BOOST_TEST( q3.expired() );
|
|
|
|
*p = V();
|
|
|
|
boost::weak_ptr<V> q4 = p->weak_from_this();
|
|
BOOST_TEST( !q4.expired() );
|
|
BOOST_TEST( !(q < q4) && !(q4 < q) );
|
|
BOOST_TEST( !(q2 < q4) && !(q4 < q2) );
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test();
|
|
return boost::report_errors();
|
|
}
|