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interprocess/test/offset_ptr_test.cpp

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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2007-2012. 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)
//
// See http://www.boost.org/libs/interprocess for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#include <boost/interprocess/offset_ptr.hpp>
#include <boost/interprocess/detail/type_traits.hpp>
#include <boost/intrusive/pointer_traits.hpp>
#include <boost/core/lightweight_test.hpp>
using namespace boost::interprocess;
class Base
{
int padding;
public:
Base() : padding(0){}
int *get() { return &padding; }
virtual ~Base(){}
};
class Base2
{
int padding;
public:
Base2() : padding(0){}
int *get() { return &padding; }
virtual ~Base2(){}
};
class Base3
{
int padding;
public:
Base3() : padding(0){}
int *get() { return &padding; }
virtual ~Base3(){}
};
class Derived
: public Base
{};
class Derived3
: public Base, public Base2, public Base3
{};
class VirtualDerived
: public virtual Base
{};
class VirtualDerived3
: public virtual Base, public virtual Base2, public virtual Base3
{};
void test_types_and_conversions()
{
typedef offset_ptr<int> pint_t;
typedef offset_ptr<const int> pcint_t;
typedef offset_ptr<volatile int> pvint_t;
typedef offset_ptr<const volatile int> pcvint_t;
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_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);
pcint_t pcint(pint);
BOOST_TEST(pcint.get() == &dummy_int);
}
{ pint_t pint(&dummy_int);
pvint_t pvint(pint);
BOOST_TEST(pvint.get() == &dummy_int);
}
{ pint_t pint(&dummy_int);
pcvint_t pcvint(pint);
BOOST_TEST(pcvint.get() == &dummy_int);
}
{ pcint_t pcint(&dummy_int);
pcvint_t pcvint(pcint);
BOOST_TEST(pcvint.get() == &dummy_int);
}
{ pvint_t pvint(&dummy_int);
pcvint_t pcvint(pvint);
BOOST_TEST(pcvint.get() == &dummy_int);
}
pint_t pint(0);
pcint_t pcint(0);
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;
pcvint = &dummy_int;
{ pcint = pint;
BOOST_TEST(pcint.get() == &dummy_int);
}
{ pvint = pint;
BOOST_TEST(pvint.get() == &dummy_int);
}
{ pcvint = pint;
BOOST_TEST(pcvint.get() == &dummy_int);
}
{ pcvint = pcint;
BOOST_TEST(pcvint.get() == &dummy_int);
}
{ pcvint = pvint;
BOOST_TEST(pcvint.get() == &dummy_int);
}
BOOST_TEST(pint);
pint = 0;
BOOST_TEST(!pint);
BOOST_TEST(pint == 0);
BOOST_TEST(0 == pint);
pint = &dummy_int;
BOOST_TEST(0 != pint);
pcint = &dummy_int;
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>
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);
BOOST_TEST(!(pbase != pderi));
BOOST_TEST((pbase - pderi) == 0);
BOOST_TEST(!(pbase < pderi));
BOOST_TEST(!(pbase > pderi));
BOOST_TEST(pbase <= pderi);
BOOST_TEST((pbase >= pderi));
}
void test_base_derived()
{
typedef offset_ptr<Base> pbase_t;
typedef offset_ptr<const Base> pcbas_t;
typedef offset_ptr<Derived> pderi_t;
typedef offset_ptr<VirtualDerived> pvder_t;
test_base_derived_impl<pbase_t, pderi_t>();
test_base_derived_impl<pbase_t, pvder_t>();
test_base_derived_impl<pcbas_t, pderi_t>();
test_base_derived_impl<pcbas_t, pvder_t>();
}
void test_arithmetic()
{
typedef offset_ptr<int> pint_t;
const int NumValues = 5;
int values[NumValues];
//Initialize p
pint_t p = values;
BOOST_TEST(p.get() == values);
//Initialize p + NumValues
pint_t pe = &values[NumValues];
BOOST_TEST(pe != p);
BOOST_TEST(pe.get() == &values[NumValues]);
//ptr - ptr
BOOST_TEST((pe - p) == NumValues);
//ptr - integer
BOOST_TEST((pe - NumValues) == p);
//ptr + integer
BOOST_TEST((p + NumValues) == pe);
//integer + ptr
BOOST_TEST((NumValues + p) == pe);
//indexing
BOOST_TEST(pint_t(&p[NumValues]) == pe);
BOOST_TEST(pint_t(&pe[-NumValues]) == p);
//ptr -= integer
pint_t p0 = pe;
p0-= NumValues;
BOOST_TEST(p == p0);
//ptr += integer
pint_t penew = p0;
penew += NumValues;
BOOST_TEST(penew == pe);
//++ptr
penew = p0;
for(int j = 0; j != NumValues; ++j, ++penew);
BOOST_TEST(penew == pe);
//--ptr
p0 = pe;
for(int j = 0; j != NumValues; ++j, --p0);
BOOST_TEST(p == p0);
//ptr++
penew = p0;
for(int j = 0; j != NumValues; ++j){
pint_t p_new_copy = penew;
BOOST_TEST(p_new_copy == penew++);
}
//ptr--
p0 = pe;
for(int j = 0; j != NumValues; ++j){
pint_t p0_copy = p0;
BOOST_TEST(p0_copy == p0--);
}
}
void test_comparison()
{
typedef offset_ptr<int> pint_t;
const int NumValues = 5;
int values[NumValues];
//Initialize p
pint_t p = values;
BOOST_TEST(p.get() == values);
//Initialize p + NumValues
pint_t pe = &values[NumValues];
BOOST_TEST(pe != p);
BOOST_TEST(pe.get() == &values[NumValues]);
//operators
BOOST_TEST(p != pe);
BOOST_TEST(p == p);
BOOST_TEST((p < pe));
BOOST_TEST((p <= pe));
BOOST_TEST((pe > p));
BOOST_TEST((pe >= p));
}
bool test_pointer_traits()
{
typedef offset_ptr<int> OInt;
typedef boost::intrusive::pointer_traits< OInt > PTOInt;
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){
return false;
}
return true;
}
struct node
{
offset_ptr<node> next;
};
void test_pointer_plus_bits()
{
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;
offset_ptr<node> pnode(&n);
BOOST_TEST(ptr_plus_bits::get_pointer(pnode) == &n);
BOOST_TEST(0 == ptr_plus_bits::get_bits(pnode));
ptr_plus_bits::set_bits(pnode, 1u);
BOOST_TEST(1 == ptr_plus_bits::get_bits(pnode));
BOOST_TEST(ptr_plus_bits::get_pointer(pnode) == &n);
ptr_plus_bits::set_pointer(pnode, &n2);
BOOST_TEST(ptr_plus_bits::get_pointer(pnode) == &n2);
BOOST_TEST(1 == ptr_plus_bits::get_bits(pnode));
ptr_plus_bits::set_bits(pnode, 0u);
BOOST_TEST(0 == ptr_plus_bits::get_bits(pnode));
BOOST_TEST(ptr_plus_bits::get_pointer(pnode) == &n2);
ptr_plus_bits::set_pointer(pnode, offset_ptr<node>());
BOOST_TEST(ptr_plus_bits::get_pointer(pnode) ==0);
BOOST_TEST(0 == ptr_plus_bits::get_bits(pnode));
ptr_plus_bits::set_bits(pnode, 1u);
BOOST_TEST(1 == ptr_plus_bits::get_bits(pnode));
BOOST_TEST(ptr_plus_bits::get_pointer(pnode) == 0);
}
void test_cast()
{
typedef offset_ptr<int> pint_t;
typedef offset_ptr<const int> pcint_t;
typedef offset_ptr<volatile int> pvint_t;
typedef offset_ptr<const volatile int> pcvint_t;
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;
int dummy_int = 9;
{ pint_t pint(&dummy_int);
pcint_t pcint(pint);
pvint_t pvint = pint;
pcvint_t pcvint = pvint;
pvoid_t pvoid = pint;
pcvoid_t pcvoid = pvoid;
pvvoid_t pvvoid = pvoid;
pcvvoid_t pcvvoid = pvoid;
pcvvoid = pvvoid;
//Test valid static_cast conversions required by Allocator::pointer
//requirements (void_pointer -> pointer, const_void_pointer -> const_pointer)
pint = static_cast<pint_t>(pvoid);
pcint = static_cast<pcint_t>(pcvoid);
BOOST_TEST(pint == pvoid);
BOOST_TEST(pcint == pint);
//Test valid static_pointer_cast conversions
{
pint = static_pointer_cast<int>(pvoid);
pcint = static_pointer_cast<const int>(pcvoid);
pvint = static_pointer_cast<volatile int>(pvoid);
pcvint = static_pointer_cast<const volatile int>(pvoid);
BOOST_TEST(pint == pvoid);
BOOST_TEST(pcint == pcvoid);
BOOST_TEST(pcint == pint);
BOOST_TEST(pvint == pint);
BOOST_TEST(pcvint == pint);
Derived d;
offset_ptr<Derived> pd(&d);
offset_ptr<Base> pb;
//Downcast
pb = static_pointer_cast<Base>(pd);
//Upcast
pd = static_pointer_cast<Derived>(pb);
Derived3 d3;
offset_ptr<Derived3> pd3(&d3);
offset_ptr<Base3> pb3;
//Downcast
pb3 = static_pointer_cast<Base3>(pd3);
//Upcast
pd3 = static_pointer_cast<Derived3>(pb3);
//Test addresses don't match in multiple inheritance
BOOST_TEST((pvoid_t)pb3 != (pvoid_t)pd3);
BOOST_TEST(pb3.get() == static_cast<Base3*>(pd3.get()));
}
//Test valid const_pointer_cast conversions
{
pint = const_pointer_cast<int>(pcint);
pint = const_pointer_cast<int>(pvint);
pint = const_pointer_cast<int>(pcvint);
pvint = const_pointer_cast<volatile int>(pcint);
pvint = const_pointer_cast<volatile int>(pcvint);
pcint = const_pointer_cast<const int>(pvint);
pcint = const_pointer_cast<const int>(pcvint);
//Test valid reinterpret_pointer_cast conversions
pint = reinterpret_pointer_cast<int>(pvoid);
pcint = reinterpret_pointer_cast<const int>(pcvoid);
pvint = reinterpret_pointer_cast<volatile int>(pvoid);
pcvint = reinterpret_pointer_cast<const volatile int>(pvoid);
}
//Test valid dynamic_pointer_cast conversions
{
{
Derived3 d3;
offset_ptr<Derived3> pd3(&d3);
offset_ptr<Base2> pb2;
//Downcast
pb2 = dynamic_pointer_cast<Base2>(pd3);
//Upcast
pd3 = dynamic_pointer_cast<Derived3>(pb2);
BOOST_TEST((pvoid_t)pb2 != (pvoid_t)pd3);
BOOST_TEST(pb2.get() == dynamic_cast<Base2*>(&d3));
BOOST_TEST(static_cast<void*>(pb2.get()) != static_cast<void*>(pd3.get()));
}
{
VirtualDerived3 vd3;
offset_ptr<VirtualDerived3> pdv3(&vd3);
offset_ptr<Base3> pb3;
offset_ptr<Base2> pb2;
offset_ptr<Base> pb;
//Downcast
pb3 = dynamic_pointer_cast<Base3>(pdv3);
pb2 = dynamic_pointer_cast<Base2>(pdv3);
pb = dynamic_pointer_cast<Base> (pdv3);
//Upcast
pdv3 = dynamic_pointer_cast<VirtualDerived3>(pb);
pdv3 = dynamic_pointer_cast<VirtualDerived3>(pb2);
pdv3 = dynamic_pointer_cast<VirtualDerived3>(pb3);
//Test addresses don't match in multiple inheritance
BOOST_TEST((pvoid_t)pb2 != (pvoid_t)pdv3);
BOOST_TEST(pb2.get() != static_cast<void*>(pdv3.get()));
BOOST_TEST((pvoid_t)pb3 != (pvoid_t)pdv3);
BOOST_TEST(pb3.get() != static_cast<void*>(pdv3.get()));
}
}
}
}
int main()
{
test_types_and_conversions();
test_base_derived();
test_arithmetic();
test_comparison();
test_pointer_traits();
test_pointer_plus_bits();
test_cast();
return ::boost::report_errors();
}
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