| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <atomic> |
| |
| // struct atomic_flag |
| |
| // void clear(memory_order = memory_order_seq_cst); |
| // void clear(memory_order = memory_order_seq_cst) volatile; |
| |
| #include <atomic> |
| #include <cassert> |
| |
| int main() |
| { |
| { |
| std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(std::memory_order_relaxed); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(std::memory_order_release); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(std::memory_order_seq_cst); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(std::memory_order_relaxed); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(std::memory_order_release); |
| assert(f.test_and_set() == 0); |
| } |
| { |
| volatile std::atomic_flag f; |
| f.test_and_set(); |
| f.clear(std::memory_order_seq_cst); |
| assert(f.test_and_set() == 0); |
| } |
| } |