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ROBLOX2016
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Library/boost/libs/smart_ptr/test/shared_ptr_alloc3_test.cpp
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PatoFlamejanteTV
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19 дек 2024, 19:11
19 дек 2024, 19:11
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#include <boost/config.hpp> // shared_ptr_alloc3_test.cpp // // Copyright (c) 2005, 2014 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/core/lightweight_test.hpp> #include <boost/shared_ptr.hpp> #include <memory> #include <cstddef> // struct D; struct X { static int instances; X(): deleted_( false ) { ++instances; } ~X() { BOOST_TEST( deleted_ ); --instances; } private: friend struct D; bool deleted_; X( X const & ); X & operator=( X const & ); }; int X::instances = 0; struct D { void operator()( X * px ) const { px->deleted_ = true; delete px; } }; int main() { BOOST_TEST( X::instances == 0 ); boost::shared_ptr<void> pv( new X, D(), std::allocator<X>() ); BOOST_TEST( X::instances == 1 ); pv.reset(); BOOST_TEST( X::instances == 0 ); pv.reset( new X, D(), std::allocator<void>() ); BOOST_TEST( X::instances == 1 ); pv.reset(); BOOST_TEST( X::instances == 0 ); return boost::report_errors(); }