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 | // <experimental/memory_resource> |
| 11 | |
| 12 | // UNSUPPORTED: c++98, c++03 |
| 13 | |
| 14 | //------------------------------------------------------------------------------ |
| 15 | // TESTING void * memory_resource::allocate(size_t, size_t = max_align) |
| 16 | // |
| 17 | // Concerns: |
| 18 | // A) 'memory_resource' contains a member 'allocate' with the required |
| 19 | // signature, including the default alignment parameter. |
| 20 | // B) The return type of 'allocate' is 'void*'. |
| 21 | // C) 'allocate' is not marked as 'noexcept'. |
| 22 | // D) Invoking 'allocate' invokes 'do_allocate' with the same arguments. |
| 23 | // E) If 'do_allocate' throws then 'allocate' propagates that exception. |
| 24 | |
| 25 | #include <experimental/memory_resource> |
| 26 | #include <type_traits> |
| 27 | #include <cstddef> |
| 28 | #include <cassert> |
| 29 | |
| 30 | #include "test_macros.h" |
| 31 | #include "test_memory_resource.hpp" |
| 32 | |
| 33 | using std::experimental::pmr::memory_resource; |
| 34 | |
| 35 | int main() |
| 36 | { |
| 37 | TestResource R(42); |
| 38 | auto& P = R.getController(); |
| 39 | memory_resource& M = R; |
| 40 | { |
| 41 | static_assert( |
| 42 | std::is_same<decltype(M.allocate(0, 0)), void*>::value |
| 43 | , "Must be void*" |
| 44 | ); |
| 45 | static_assert( |
| 46 | std::is_same<decltype(M.allocate(0)), void*>::value |
| 47 | , "Must be void*" |
| 48 | ); |
| 49 | } |
| 50 | { |
| 51 | static_assert( |
| 52 | ! noexcept(M.allocate(0, 0)) |
| 53 | , "Must not be noexcept." |
| 54 | ); |
| 55 | static_assert( |
| 56 | ! noexcept(M.allocate(0)) |
| 57 | , "Must not be noexcept." |
| 58 | ); |
| 59 | } |
| 60 | { |
| 61 | int s = 42; |
| 62 | int a = 64; |
| 63 | void* p = M.allocate(s, a); |
| 64 | assert(P.alloc_count == 1); |
| 65 | assert(P.checkAlloc(p, s, a)); |
| 66 | |
| 67 | s = 128; |
| 68 | a = MaxAlignV; |
| 69 | p = M.allocate(s); |
| 70 | assert(P.alloc_count == 2); |
| 71 | assert(P.checkAlloc(p, s, a)); |
| 72 | } |
| 73 | #ifndef TEST_HAS_NO_EXCEPTIONS |
| 74 | { |
| 75 | TestResource R2; |
| 76 | auto& P = R2.getController(); |
| 77 | P.throw_on_alloc = true; |
| 78 | memory_resource& M2 = R2; |
| 79 | try { |
| 80 | M2.allocate(42); |
| 81 | assert(false); |
| 82 | } catch (TestException const&) { |
| 83 | // do nothing. |
| 84 | } catch (...) { |
| 85 | assert(false); |
| 86 | } |
| 87 | } |
| 88 | #endif |
| 89 | } |