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- #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>
- #include <boost/memory_order.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();
- }
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