| #include <boost/config.hpp> |
| |
| // sp_atomic_test.cpp |
| // |
| // Copyright (c) 2008 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> |
| |
| // |
| |
| struct X |
| { |
| }; |
| |
| #define BOOST_TEST_SP_EQ( p, q ) BOOST_TEST( p == q && !( p < q ) && !( q < p ) ) |
| |
| int main() |
| { |
| boost::shared_ptr<X> px( new X ); |
| |
| { |
| boost::shared_ptr<X> p2 = boost::atomic_load( &px ); |
| BOOST_TEST_SP_EQ( p2, px ); |
| |
| boost::shared_ptr<X> px2( new X ); |
| boost::atomic_store( &px, px2 ); |
| BOOST_TEST_SP_EQ( px, px2 ); |
| |
| p2 = boost::atomic_load( &px ); |
| BOOST_TEST_SP_EQ( p2, px ); |
| BOOST_TEST_SP_EQ( p2, px2 ); |
| |
| boost::shared_ptr<X> px3( new X ); |
| boost::shared_ptr<X> p3 = boost::atomic_exchange( &px, px3 ); |
| BOOST_TEST_SP_EQ( p3, px2 ); |
| BOOST_TEST_SP_EQ( px, px3 ); |
| |
| boost::shared_ptr<X> px4( new X ); |
| boost::shared_ptr<X> cmp; |
| |
| bool r = boost::atomic_compare_exchange( &px, &cmp, px4 ); |
| BOOST_TEST( !r ); |
| BOOST_TEST_SP_EQ( px, px3 ); |
| BOOST_TEST_SP_EQ( cmp, px3 ); |
| |
| r = boost::atomic_compare_exchange( &px, &cmp, px4 ); |
| BOOST_TEST( r ); |
| BOOST_TEST_SP_EQ( px, px4 ); |
| } |
| |
| // |
| |
| px.reset(); |
| |
| { |
| boost::shared_ptr<X> p2 = boost::atomic_load_explicit( &px, boost::memory_order_acquire ); |
| BOOST_TEST_SP_EQ( p2, px ); |
| |
| boost::shared_ptr<X> px2( new X ); |
| boost::atomic_store_explicit( &px, px2, boost::memory_order_release ); |
| BOOST_TEST_SP_EQ( px, px2 ); |
| |
| boost::shared_ptr<X> p3 = boost::atomic_exchange_explicit( &px, boost::shared_ptr<X>(), boost::memory_order_acq_rel ); |
| BOOST_TEST_SP_EQ( p3, px2 ); |
| BOOST_TEST_SP_EQ( px, p2 ); |
| |
| boost::shared_ptr<X> px4( new X ); |
| boost::shared_ptr<X> cmp( px2 ); |
| |
| bool r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_acquire, boost::memory_order_relaxed ); |
| BOOST_TEST( !r ); |
| BOOST_TEST_SP_EQ( px, p2 ); |
| BOOST_TEST_SP_EQ( cmp, p2 ); |
| |
| r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_release, boost::memory_order_acquire ); |
| BOOST_TEST( r ); |
| BOOST_TEST_SP_EQ( px, px4 ); |
| } |
| |
| return boost::report_errors(); |
| } |