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 | // memory_resource * new_delete_resource() |
| 15 | |
| 16 | #include <experimental/memory_resource> |
| 17 | #include <type_traits> |
| 18 | #include <cassert> |
| 19 | |
| 20 | #include "count_new.hpp" |
| 21 | |
| 22 | namespace ex = std::experimental::pmr; |
| 23 | |
| 24 | struct assert_on_compare : public ex::memory_resource |
| 25 | { |
| 26 | protected: |
| 27 | virtual void * do_allocate(size_t, size_t) |
| 28 | { assert(false); } |
| 29 | |
| 30 | virtual void do_deallocate(void *, size_t, size_t) |
| 31 | { assert(false); } |
| 32 | |
| 33 | virtual bool do_is_equal(ex::memory_resource const &) const noexcept |
| 34 | { assert(false); } |
| 35 | }; |
| 36 | |
| 37 | void test_return() |
| 38 | { |
| 39 | { |
| 40 | static_assert(std::is_same< |
| 41 | decltype(ex::new_delete_resource()), ex::memory_resource* |
| 42 | >::value, ""); |
| 43 | } |
| 44 | // assert not null |
| 45 | { |
| 46 | assert(ex::new_delete_resource()); |
| 47 | } |
| 48 | // assert same return value |
| 49 | { |
| 50 | assert(ex::new_delete_resource() == ex::new_delete_resource()); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | void test_equality() |
| 55 | { |
| 56 | // Same object |
| 57 | { |
| 58 | ex::memory_resource & r1 = *ex::new_delete_resource(); |
| 59 | ex::memory_resource & r2 = *ex::new_delete_resource(); |
| 60 | // check both calls returned the same object |
| 61 | assert(&r1 == &r2); |
| 62 | // check for proper equality semantics |
| 63 | assert(r1 == r2); |
| 64 | assert(r2 == r1); |
| 65 | assert(!(r1 != r2)); |
| 66 | assert(!(r2 != r1)); |
| 67 | } |
| 68 | // Different types |
| 69 | { |
| 70 | ex::memory_resource & r1 = *ex::new_delete_resource(); |
| 71 | assert_on_compare c; |
| 72 | ex::memory_resource & r2 = c; |
| 73 | assert(r1 != r2); |
| 74 | assert(!(r1 == r2)); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | void test_allocate_deallocate() |
| 79 | { |
| 80 | ex::memory_resource & r1 = *ex::new_delete_resource(); |
| 81 | |
| 82 | globalMemCounter.reset(); |
| 83 | |
| 84 | void *ret = r1.allocate(50); |
| 85 | assert(ret); |
| 86 | assert(globalMemCounter.checkOutstandingNewEq(1)); |
| 87 | assert(globalMemCounter.checkLastNewSizeEq(50)); |
| 88 | |
| 89 | r1.deallocate(ret, 1); |
| 90 | assert(globalMemCounter.checkOutstandingNewEq(0)); |
| 91 | assert(globalMemCounter.checkDeleteCalledEq(1)); |
| 92 | |
| 93 | } |
| 94 | |
| 95 | int main() |
| 96 | { |
| 97 | static_assert(noexcept(ex::new_delete_resource()), "Must be noexcept"); |
| 98 | test_return(); |
| 99 | test_equality(); |
| 100 | test_allocate_deallocate(); |
| 101 | } |