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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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