| //===-- atomic_flag_test_and_set.c ----------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements atomic_flag_test_and_set from C11's stdatomic.h. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef __has_include |
| #define __has_include(inc) 0 |
| #endif |
| |
| #if __has_include(<stdatomic.h>) |
| |
| #include <stdatomic.h> |
| #undef atomic_flag_test_and_set |
| _Bool atomic_flag_test_and_set(volatile atomic_flag *object) { |
| return __c11_atomic_exchange(&(object)->_Value, 1, __ATOMIC_SEQ_CST); |
| } |
| |
| #endif |
