| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // UNSUPPORTED: libcpp-has-no-threads |
| |
| // <atomic> |
| |
| // struct atomic_flag |
| |
| // bool atomic_flag_test_and_set_explicit(volatile atomic_flag*, memory_order); |
| // bool atomic_flag_test_and_set_explicit(atomic_flag*, memory_order); |
| |
| #include <atomic> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_relaxed) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_consume) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acquire) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_release) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acq_rel) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_seq_cst) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_relaxed) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_consume) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acquire) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_release) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acq_rel) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.clear(); |
| assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_seq_cst) == 0); |
| assert(f.test_and_set() == 1); |
| } |
| |
| return 0; |
| } |