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/*
Copyright 2014 Glen Joseph Fernandes
(glenjofe@gmail.com)
Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
*/
#include <boost/align/aligned_allocator_adaptor.hpp>
#include <boost/align/is_aligned.hpp>
#include <boost/core/lightweight_test.hpp>
#include <new>
#include <cstring>
template<class T>
class A {
public:
typedef T value_type;
typedef T* pointer;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
template<class U>
struct rebind {
typedef A<U> other;
};
A(int state)
: state_(state) { }
template<class U>
A(const A<U>& other)
: state_(other.state()) { }
T* allocate(std::size_t size, const void* = 0) {
return static_cast<T*>(::operator new(sizeof(T) * size));
}
void deallocate(T* ptr, std::size_t) {
::operator delete(ptr);
}
void construct(T* ptr, const T& value) {
::new(static_cast<void*>(ptr)) T(value);
}
void destroy(T* ptr) {
ptr->~T();
}
int state() const {
return state_;
}
private:
int state_;
};
template<class T, class U>
inline bool
operator==(const A<T>& a, const A<U>& b)
{
return a.state() == b.state();
}
template<class T, class U>
inline bool
operator!=(const A<T>& a, const A<U>& b)
{
return !(a == b);
}
template<std::size_t Alignment>
void test_allocate()
{
{
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> a(5);
int* p = a.allocate(1);
BOOST_TEST(p != 0);
BOOST_TEST(boost::alignment::is_aligned(p, Alignment));
std::memset(p, 0, 1);
a.deallocate(p, 1);
}
{
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> a(5);
int* p = a.allocate(1);
int* q = a.allocate(1, p);
BOOST_TEST(q != 0);
BOOST_TEST(boost::alignment::is_aligned(q, Alignment));
std::memset(q, 0, 1);
a.deallocate(q, 1);
a.deallocate(p, 1);
}
{
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> a(5);
int* p = a.allocate(0);
a.deallocate(p, 0);
}
}
template<std::size_t Alignment>
void test_construct()
{
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> a(5);
int* p = a.allocate(1);
a.construct(p, 1);
BOOST_TEST(*p == 1);
a.destroy(p);
a.deallocate(p, 1);
}
template<std::size_t Alignment>
void test_constructor()
{
{
boost::alignment::aligned_allocator_adaptor<A<char>, Alignment> a(5);
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> b(a);
BOOST_TEST(b == a);
}
{
A<int> a(5);
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> b(a);
BOOST_TEST(b.base() == a);
}
}
template<std::size_t Alignment>
void test_rebind()
{
boost::alignment::aligned_allocator_adaptor<A<int>, Alignment> a(5);
typename boost::alignment::aligned_allocator_adaptor<A<int>,
Alignment>::template rebind<int>::other b(a);
BOOST_TEST(b == a);
}
template<std::size_t Alignment>
void test()
{
test_allocate<Alignment>();
test_construct<Alignment>();
test_constructor<Alignment>();
test_rebind<Alignment>();
}
int main()
{
test<1>();
test<2>();
test<4>();
test<8>();
test<16>();
test<32>();
test<64>();
test<128>();
return boost::report_errors();
}
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