| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // XFAIL: !is-lockfree-runtime-function |
| |
| // <atomic> |
| |
| // template <class T> |
| // bool atomic_is_lock_free(const volatile atomic<T>* obj) noexcept; |
| // |
| // template <class T> |
| // bool atomic_is_lock_free(const atomic<T>* obj) noexcept; |
| |
| #include <atomic> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "atomic_helpers.h" |
| |
| template <class T> |
| struct TestFn { |
| void operator()() const { |
| typedef std::atomic<T> A; |
| T t = T(); |
| A a(t); |
| bool b1 = std::atomic_is_lock_free(static_cast<const A*>(&a)); |
| volatile A va(t); |
| bool b2 = std::atomic_is_lock_free(static_cast<const volatile A*>(&va)); |
| assert(b1 == b2); |
| |
| ASSERT_NOEXCEPT(std::atomic_is_lock_free(static_cast<const A*>(&a))); |
| ASSERT_NOEXCEPT(std::atomic_is_lock_free(static_cast<const volatile A*>(&va))); |
| } |
| }; |
| |
| struct A { |
| char x[4]; |
| }; |
| |
| int main(int, char**) { |
| TestFn<A>()(); |
| TestEachAtomicType<TestFn>()(); |
| return 0; |
| } |