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offset_ptr improvements:

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- Use simplier traits to reduce dependencies and add support for nullptr
- Add tests cover construction/assignment from literal zero and nullptr
This commit is contained in:
Ion Gaztañaga
2024-08-03 23:14:36 +02:00
parent c886f911c9
commit 39aed2f41b
2 changed files with 179 additions and 56 deletions
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103
test/offset_ptr_test.cpp
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@@ -11,7 +11,6 @@
#include <boost/interprocess/offset_ptr.hpp>
#include <boost/interprocess/detail/type_traits.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#include <boost/static_assert.hpp>
#include <boost/core/lightweight_test.hpp>
using namespace boost::interprocess;
@@ -34,15 +33,15 @@ void test_types_and_conversions()
typedef offset_ptr<volatile int> pvint_t;
typedef offset_ptr<const volatile int> pcvint_t;
BOOST_STATIC_ASSERT((ipcdetail::is_same<pint_t::element_type, int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pcint_t::element_type, const int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pvint_t::element_type, volatile int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pcvint_t::element_type, const volatile int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pint_t::element_type, int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pcint_t::element_type, const int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pvint_t::element_type, volatile int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pcvint_t::element_type, const volatile int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pint_t::value_type, int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pcint_t::value_type, int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pvint_t::value_type, int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<pcvint_t::value_type, int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pint_t::value_type, int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pcint_t::value_type, int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pvint_t::value_type, int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<pcvint_t::value_type, int>::value));
int dummy_int = 9;
{ pint_t pint(&dummy_int);
@@ -71,6 +70,39 @@ void test_types_and_conversions()
pvint_t pvint(0);
pcvint_t pcvint(0);
{
pint_t pint2 = 0;
pcint_t pcint2 = 0;
pvint_t pvint2 = 0;
pcvint_t pcvint2 = 0;
(void)pint2;
(void)pcint2;
(void)pvint2;
(void)pcvint2;
}
{
pint_t pint2 = op_nullptr_t();
pcint_t pcint2 = op_nullptr_t();
pvint_t pvint2 = op_nullptr_t();
pcvint_t pcvint2 = op_nullptr_t();
(void)pint2;
(void)pcint2;
(void)pvint2;
(void)pcvint2;
}
{
pint_t pint2((op_nullptr_t()));
pcint_t pcint2((op_nullptr_t()));
pvint_t pvint2((op_nullptr_t()));
pcvint_t pcvint2((op_nullptr_t()));
(void)pint2;
(void)pcint2;
(void)pvint2;
(void)pcvint2;
}
pint = &dummy_int;
pcint = &dummy_int;
pvint = &dummy_int;
@@ -108,6 +140,47 @@ void test_types_and_conversions()
BOOST_TEST( (pcint - pint) == 0);
BOOST_TEST( (pint - pcint) == 0);
typedef offset_ptr<void> pvoid_t;
typedef offset_ptr<const void> pcvoid_t;
typedef offset_ptr<volatile void> pvvoid_t;
typedef offset_ptr<const volatile void> pcvvoid_t;
{
pvoid_t pvoid = pint;
pcvoid_t pcvoid = pcint;
pvvoid_t pvvoid = pvint;
pcvvoid_t pcvvoid = pcvint;
(void)pvoid;
(void)pcvoid;
(void)pvvoid;
(void)pcvvoid;
}
{
pvoid_t pvoid(pint);
pcvoid_t pcvoid(pcint);
pvvoid_t pvvoid(pvint);
pcvvoid_t pcvvoid(pcvint);
(void)pvoid;
(void)pcvoid;
(void)pvvoid;
(void)pcvvoid;
}
{
pvoid_t pvoid;
pcvoid_t pcvoid;
pvvoid_t pvvoid;
pcvvoid_t pcvvoid;
pvoid = pint;
pcvoid = pcint;
pvvoid = pvint;
pcvvoid = pcvint;
(void)pvoid;
(void)pcvoid;
(void)pvvoid;
(void)pcvvoid;
}
}
template<class BasePtr, class DerivedPtr>
@@ -116,6 +189,8 @@ void test_base_derived_impl()
typename DerivedPtr::element_type d;
DerivedPtr pderi(&d);
{ BasePtr pbase2 = pderi; (void)pbase2; }
BasePtr pbase(pderi);
pbase = pderi;
BOOST_TEST(pbase == pderi);
@@ -234,10 +309,10 @@ bool test_pointer_traits()
{
typedef offset_ptr<int> OInt;
typedef boost::intrusive::pointer_traits< OInt > PTOInt;
BOOST_STATIC_ASSERT((ipcdetail::is_same<PTOInt::element_type, int>::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<PTOInt::pointer, OInt >::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<PTOInt::difference_type, OInt::difference_type >::value));
BOOST_STATIC_ASSERT((ipcdetail::is_same<PTOInt::rebind_pointer<double>::type, offset_ptr<double> >::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<PTOInt::element_type, int>::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<PTOInt::pointer, OInt >::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<PTOInt::difference_type, OInt::difference_type >::value));
BOOST_INTERPROCESS_STATIC_ASSERT((ipcdetail::is_same<PTOInt::rebind_pointer<double>::type, offset_ptr<double> >::value));
int dummy;
OInt oi(&dummy);
if(boost::intrusive::pointer_traits<OInt>::pointer_to(dummy) != oi){
@@ -253,7 +328,7 @@ struct node
void test_pointer_plus_bits()
{
BOOST_STATIC_ASSERT((boost::intrusive::max_pointer_plus_bits< offset_ptr<void>, boost::move_detail::alignment_of<node>::value >::value >= 1U));
BOOST_INTERPROCESS_STATIC_ASSERT((boost::intrusive::max_pointer_plus_bits< offset_ptr<void>, boost::move_detail::alignment_of<node>::value >::value >= 1U));
typedef boost::intrusive::pointer_plus_bits< offset_ptr<node>, 1u > ptr_plus_bits;
node n, n2;