1/*===-- atomic_flag_test_and_set_explicit.c ---------------------------------===
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 * This file implements atomic_flag_test_and_set_explicit from C11's stdatomic.h
11 *
12 *===------------------------------------------------------------------------===
13 */
14
15#ifndef __has_include
16#define __has_include(inc) 0
17#endif
18
19#if __has_include(<stdatomic.h>)
20
21#include <stdatomic.h>
22#undef atomic_flag_test_and_set_explicit
23_Bool atomic_flag_test_and_set_explicit(volatile atomic_flag *object,
24                                        memory_order order) {
25  return __c11_atomic_exchange(&(object)->_Value, 1, order);
26}
27
28#endif
29