89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
#include <boost/config.hpp>
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// sp_atomic_test.cpp
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//
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// Copyright (c) 2008 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/memory_order.hpp>
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//
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struct X
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{
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};
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#define BOOST_TEST_SP_EQ( p, q ) BOOST_TEST( p == q && !( p < q ) && !( q < p ) )
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int main()
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{
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boost::shared_ptr<X> px( new X );
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{
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boost::shared_ptr<X> p2 = boost::atomic_load( &px );
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BOOST_TEST_SP_EQ( p2, px );
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boost::shared_ptr<X> px2( new X );
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boost::atomic_store( &px, px2 );
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BOOST_TEST_SP_EQ( px, px2 );
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p2 = boost::atomic_load( &px );
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BOOST_TEST_SP_EQ( p2, px );
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BOOST_TEST_SP_EQ( p2, px2 );
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boost::shared_ptr<X> px3( new X );
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boost::shared_ptr<X> p3 = boost::atomic_exchange( &px, px3 );
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BOOST_TEST_SP_EQ( p3, px2 );
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BOOST_TEST_SP_EQ( px, px3 );
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boost::shared_ptr<X> px4( new X );
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boost::shared_ptr<X> cmp;
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bool r = boost::atomic_compare_exchange( &px, &cmp, px4 );
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BOOST_TEST( !r );
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BOOST_TEST_SP_EQ( px, px3 );
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BOOST_TEST_SP_EQ( cmp, px3 );
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r = boost::atomic_compare_exchange( &px, &cmp, px4 );
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BOOST_TEST( r );
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BOOST_TEST_SP_EQ( px, px4 );
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}
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//
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px.reset();
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{
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boost::shared_ptr<X> p2 = boost::atomic_load_explicit( &px, boost::memory_order_acquire );
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BOOST_TEST_SP_EQ( p2, px );
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boost::shared_ptr<X> px2( new X );
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boost::atomic_store_explicit( &px, px2, boost::memory_order_release );
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BOOST_TEST_SP_EQ( px, px2 );
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boost::shared_ptr<X> p3 = boost::atomic_exchange_explicit( &px, boost::shared_ptr<X>(), boost::memory_order_acq_rel );
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BOOST_TEST_SP_EQ( p3, px2 );
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BOOST_TEST_SP_EQ( px, p2 );
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boost::shared_ptr<X> px4( new X );
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boost::shared_ptr<X> cmp( px2 );
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bool r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_acquire, boost::memory_order_relaxed );
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BOOST_TEST( !r );
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BOOST_TEST_SP_EQ( px, p2 );
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BOOST_TEST_SP_EQ( cmp, p2 );
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r = boost::atomic_compare_exchange_explicit( &px, &cmp, px4, boost::memory_order_release, boost::memory_order_acquire );
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BOOST_TEST( r );
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BOOST_TEST_SP_EQ( px, px4 );
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}
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return boost::report_errors();
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}
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