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Add owner_equals

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This commit is contained in:
Peter Dimov
2020-05-31 21:41:06 +03:00
parent 62b0e5cdf4
commit 58915ca2fe
4 changed files with 134 additions and 0 deletions
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10
include/boost/smart_ptr/shared_ptr.hpp
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@ -777,6 +777,16 @@ public:
return pn < rhs.pn;
}
template<class Y> bool owner_equals( shared_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn == rhs.pn;
}
template<class Y> bool owner_equals( weak_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn == rhs.pn;
}
void * _internal_get_deleter( boost::detail::sp_typeinfo_ const & ti ) const BOOST_SP_NOEXCEPT
{
return pn.get_deleter( ti );

10
include/boost/smart_ptr/weak_ptr.hpp
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@ -237,6 +237,16 @@ public:
return pn < rhs.pn;
}
template<class Y> bool owner_equals( weak_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn == rhs.pn;
}
template<class Y> bool owner_equals( shared_ptr<Y> const & rhs ) const BOOST_SP_NOEXCEPT
{
return pn == rhs.pn;
}
// Tasteless as this may seem, making all members public allows member templates
// to work in the absence of member template friends. (Matthew Langston)

1
test/Jamfile
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@ -368,3 +368,4 @@ compile sp_pedantic_test.cpp
<toolset>clang:<warnings-as-errors>on ;
run sp_owner_before_test.cpp ;
run sp_owner_equals_test.cpp ;

113
test/sp_owner_equals_test.cpp Normal file
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@ -0,0 +1,113 @@
// Copyright 2020 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>
#include <boost/core/lightweight_test.hpp>
int main()
{
{
boost::shared_ptr<int> p1( new int );
boost::shared_ptr<int> p2( p1 );
BOOST_TEST( p1.owner_equals( p2 ) );
BOOST_TEST( p2.owner_equals( p1 ) );
boost::shared_ptr<int> p3( new int );
BOOST_TEST( !p1.owner_equals( p3 ) );
BOOST_TEST( !p3.owner_equals( p1 ) );
boost::shared_ptr<int> p4;
boost::shared_ptr<int> p5;
BOOST_TEST( p4.owner_equals( p5 ) );
BOOST_TEST( p5.owner_equals( p4 ) );
BOOST_TEST( !p4.owner_equals( p3 ) );
BOOST_TEST( !p3.owner_equals( p4 ) );
boost::shared_ptr<int> p6( static_cast<int*>(0) );
BOOST_TEST( !p4.owner_equals( p6 ) );
BOOST_TEST( !p6.owner_equals( p4 ) );
boost::shared_ptr<void> p7( p1 );
BOOST_TEST( p1.owner_equals( p7 ) );
BOOST_TEST( p7.owner_equals( p1 ) );
boost::shared_ptr<void> p8;
BOOST_TEST( !p1.owner_equals( p8 ) );
BOOST_TEST( !p8.owner_equals( p1 ) );
BOOST_TEST( p4.owner_equals( p8 ) );
BOOST_TEST( p8.owner_equals( p4 ) );
boost::weak_ptr<int> q1( p1 );
BOOST_TEST( p1.owner_equals( q1 ) );
BOOST_TEST( q1.owner_equals( p1 ) );
boost::weak_ptr<int> q2( p1 );
BOOST_TEST( q1.owner_equals( q2 ) );
BOOST_TEST( q2.owner_equals( q1 ) );
boost::weak_ptr<int> q3( p3 );
BOOST_TEST( !p1.owner_equals( q3 ) );
BOOST_TEST( !q3.owner_equals( p1 ) );
BOOST_TEST( !q1.owner_equals( q3 ) );
BOOST_TEST( !q3.owner_equals( q1 ) );
boost::weak_ptr<int> q4;
BOOST_TEST( p4.owner_equals( q4 ) );
BOOST_TEST( q4.owner_equals( p4 ) );
BOOST_TEST( !q1.owner_equals( q4 ) );
BOOST_TEST( !q4.owner_equals( q1 ) );
boost::weak_ptr<void> q5;
BOOST_TEST( q4.owner_equals( q5 ) );
BOOST_TEST( q5.owner_equals( q4 ) );
boost::weak_ptr<void> q7( p7 );
BOOST_TEST( p1.owner_equals( q7 ) );
BOOST_TEST( q7.owner_equals( p1 ) );
BOOST_TEST( q1.owner_equals( q7 ) );
BOOST_TEST( q7.owner_equals( q1 ) );
p1.reset();
p2.reset();
p3.reset();
p7.reset();
BOOST_TEST( q1.expired() );
BOOST_TEST( q2.expired() );
BOOST_TEST( q3.expired() );
BOOST_TEST( q7.expired() );
BOOST_TEST( q1.owner_equals( q2 ) );
BOOST_TEST( q2.owner_equals( q1 ) );
BOOST_TEST( q1.owner_equals( q7 ) );
BOOST_TEST( q7.owner_equals( q1 ) );
BOOST_TEST( !q1.owner_equals( q3 ) );
BOOST_TEST( !q3.owner_equals( q1 ) );
BOOST_TEST( !q1.owner_equals( q4 ) );
BOOST_TEST( !q4.owner_equals( q1 ) );
}
return boost::report_errors();
}