Eric Fiselier | 257fd69 | 2016-05-07 01:04:55 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | // UNSUPPORTED: c++98, c++03 |
| 11 | |
| 12 | // <experimental/memory_resource> |
| 13 | |
| 14 | // template <class T> class polymorphic_allocator |
| 15 | |
| 16 | // T* polymorphic_allocator<T>::deallocate(T*, size_t size) |
| 17 | |
| 18 | #include <experimental/memory_resource> |
| 19 | #include <type_traits> |
| 20 | #include <cassert> |
| 21 | |
| 22 | #include "test_memory_resource.hpp" |
| 23 | |
| 24 | namespace ex = std::experimental::pmr; |
| 25 | |
| 26 | template <size_t S, size_t Align> |
| 27 | void testForSizeAndAlign() { |
| 28 | using T = typename std::aligned_storage<S, Align>::type; |
| 29 | |
| 30 | TestResource R; |
| 31 | ex::polymorphic_allocator<T> a(&R); |
| 32 | |
| 33 | for (int N = 1; N <= 5; ++N) { |
| 34 | auto ret = a.allocate(N); |
| 35 | assert(R.checkAlloc(ret, N * sizeof(T), alignof(T))); |
| 36 | |
| 37 | a.deallocate(ret, N); |
| 38 | assert(R.checkDealloc(ret, N * sizeof(T), alignof(T))); |
| 39 | |
| 40 | R.reset(); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | int main() |
| 45 | { |
| 46 | { |
| 47 | ex::polymorphic_allocator<int> a; |
| 48 | static_assert( |
| 49 | std::is_same<decltype(a.deallocate(nullptr, 0)), void>::value, ""); |
| 50 | } |
| 51 | { |
| 52 | constexpr std::size_t MA = alignof(std::max_align_t); |
| 53 | testForSizeAndAlign<1, 1>(); |
| 54 | testForSizeAndAlign<1, 2>(); |
| 55 | testForSizeAndAlign<1, MA>(); |
| 56 | testForSizeAndAlign<2, 2>(); |
| 57 | testForSizeAndAlign<73, alignof(void*)>(); |
| 58 | testForSizeAndAlign<73, MA>(); |
| 59 | testForSizeAndAlign<13, MA>(); |
| 60 | } |
| 61 | } |