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- #include <boost/config.hpp>
- // atomic_sp_test.cpp
- //
- // Copyright 2008, 2017 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/smart_ptr/atomic_shared_ptr.hpp>
- #include <boost/core/lightweight_test.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()
- {
- // default constructor
- {
- boost::atomic_shared_ptr<X> apx;
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( p2.get(), (X*)0 );
- BOOST_TEST_EQ( p2.use_count(), 0 );
- }
- // shared_ptr constructor
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // shared_ptr assignment
- {
- boost::shared_ptr<X> px0( new X );
- boost::atomic_shared_ptr<X> apx( px0 );
- boost::shared_ptr<X> px( new X );
- apx = px;
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // load, w/ mo
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> p2 = apx.load( boost::memory_order_acquire );
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // operator shared_ptr
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> p2 = apx;
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // store
- {
- boost::shared_ptr<X> px0( new X );
- boost::atomic_shared_ptr<X> apx( px0 );
- boost::shared_ptr<X> px( new X );
- apx.store( px );
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // store, w/ mo
- {
- boost::shared_ptr<X> px0( new X );
- boost::atomic_shared_ptr<X> apx( px0 );
- boost::shared_ptr<X> px( new X );
- apx.store( px, boost::memory_order_release );
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // exchange
- {
- boost::shared_ptr<X> px0( new X );
- boost::atomic_shared_ptr<X> apx( px0 );
- boost::shared_ptr<X> px( new X );
- boost::shared_ptr<X> p1 = apx.exchange( px );
- BOOST_TEST_EQ( px0, p1 );
- BOOST_TEST_EQ( px0.use_count(), 2 );
- BOOST_TEST_EQ( p1.use_count(), 2 );
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // exchange, w/ mo
- {
- boost::shared_ptr<X> px0( new X );
- boost::atomic_shared_ptr<X> apx( px0 );
- boost::shared_ptr<X> px( new X );
- boost::shared_ptr<X> p1 = apx.exchange( px, boost::memory_order_acq_rel );
- BOOST_TEST_EQ( px0, p1 );
- BOOST_TEST_EQ( px0.use_count(), 2 );
- BOOST_TEST_EQ( p1.use_count(), 2 );
- boost::shared_ptr<X> p2 = apx.load();
- BOOST_TEST_EQ( px, p2 );
- BOOST_TEST_EQ( px.use_count(), 3 );
- BOOST_TEST_EQ( p2.use_count(), 3 );
- }
- // compare_exchange_weak
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> px2( new X );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_weak( cmp, px2 );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_weak( cmp, px2 );
- BOOST_TEST( r );
- BOOST_TEST_SP_EQ( apx.load(), px2 );
- }
- // compare_exchange_weak, w/ mo
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> px2( new X );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_weak( cmp, px2, boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_weak( cmp, px2, boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( r );
- BOOST_TEST_SP_EQ( apx.load(), px2 );
- }
- // compare_exchange_weak, rv
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_weak( cmp, boost::shared_ptr<X>() );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_weak( cmp, boost::shared_ptr<X>() );
- BOOST_TEST( r );
- BOOST_TEST( apx.load().get() == 0 );
- BOOST_TEST( apx.load().use_count() == 0 );
- }
- // compare_exchange_weak, rv, w/ mo
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_weak( cmp, boost::shared_ptr<X>(), boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_weak( cmp, boost::shared_ptr<X>(), boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( r );
- BOOST_TEST( apx.load().get() == 0 );
- BOOST_TEST( apx.load().use_count() == 0 );
- }
- // compare_exchange_strong
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> px2( new X );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_strong( cmp, px2 );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_strong( cmp, px2 );
- BOOST_TEST( r );
- BOOST_TEST_SP_EQ( apx.load(), px2 );
- }
- // compare_exchange_strong, w/ mo
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> px2( new X );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_strong( cmp, px2, boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_strong( cmp, px2, boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( r );
- BOOST_TEST_SP_EQ( apx.load(), px2 );
- }
- // compare_exchange_strong, rv
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_strong( cmp, boost::shared_ptr<X>() );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_strong( cmp, boost::shared_ptr<X>() );
- BOOST_TEST( r );
- BOOST_TEST( apx.load().get() == 0 );
- BOOST_TEST( apx.load().use_count() == 0 );
- }
- // compare_exchange_strong, rv, w/ mo
- {
- boost::shared_ptr<X> px( new X );
- boost::atomic_shared_ptr<X> apx( px );
- boost::shared_ptr<X> cmp;
- bool r = apx.compare_exchange_strong( cmp, boost::shared_ptr<X>(), boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( !r );
- BOOST_TEST_SP_EQ( apx.load(), px );
- BOOST_TEST_SP_EQ( cmp, px );
- r = apx.compare_exchange_strong( cmp, boost::shared_ptr<X>(), boost::memory_order_seq_cst, boost::memory_order_seq_cst );
- BOOST_TEST( r );
- BOOST_TEST( apx.load().get() == 0 );
- BOOST_TEST( apx.load().use_count() == 0 );
- }
- return boost::report_errors();
- }
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