boostorg/smart_ptr
1
0
Fork 1
mirror of https://github.com/boostorg/smart_ptr.git synced 2025-11-02 16:51:59 +01:00
Code Issues Packages Projects Releases Wiki Activity

Atomic access added.

Browse Source 
[SVN r44636]
This commit is contained in:
Peter Dimov
2008-04-20 14:59:12 +00:00
parent 35f2af947c
commit 04be979670
4 changed files with 187 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
test/Jamfile.v2
View File

@@ -44,5 +44,6 @@ import testing ;
[ run spinlock_try_test.cpp : : : <threading>multi : spinlock_try_test.mt ]
[ run spinlock_pool_test.cpp ]
[ run sp_accept_owner_test.cpp ]
[ run sp_atomic_test.cpp ]
;
}

87
test/sp_atomic_test.cpp Normal file
View File

@@ -0,0 +1,87 @@
#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 = px.atomic_load();
BOOST_TEST_SP_EQ( p2, px );
boost::shared_ptr<X> px2( new X );
px.atomic_store( px2 );
BOOST_TEST_SP_EQ( px, px2 );
p2 = px.atomic_load();
BOOST_TEST_SP_EQ( p2, px );
BOOST_TEST_SP_EQ( p2, px2 );
boost::shared_ptr<X> px3( new X );
boost::shared_ptr<X> p3 = px.atomic_swap( 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 = px.atomic_compare_swap( cmp, px4 );
BOOST_TEST( !r );
BOOST_TEST_SP_EQ( px, px3 );
BOOST_TEST_SP_EQ( cmp, px3 );
r = px.atomic_compare_swap( cmp, px4 );
BOOST_TEST( r );
BOOST_TEST_SP_EQ( px, px4 );
}
//
px.reset();
{
boost::shared_ptr<X> p2 = px.atomic_load( boost::memory_order_acquire );
BOOST_TEST_SP_EQ( p2, px );
boost::shared_ptr<X> px2( new X );
px.atomic_store( px2, boost::memory_order_release );
BOOST_TEST_SP_EQ( px, px2 );
boost::shared_ptr<X> p3 = px.atomic_swap( 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 = px.atomic_compare_swap( 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 = px.atomic_compare_swap( cmp, px4, boost::memory_order_release, boost::memory_order_acquire );
BOOST_TEST( r );
BOOST_TEST_SP_EQ( px, px4 );
}
return boost::report_errors();
}