1 /*===-- atomic_flag_test_and_set_explicit.c ---------------------------------===
3 * The LLVM Compiler Infrastructure
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
8 *===------------------------------------------------------------------------===
10 * This file implements atomic_flag_test_and_set_explicit from C11's stdatomic.h
12 *===------------------------------------------------------------------------===
15 #include <stdatomic.h>
16 #undef atomic_flag_test_and_set_explicit
17 _Bool atomic_flag_test_and_set_explicit(volatile atomic_flag *object,
19 return __c11_atomic_exchange(&(object)->_Value, 1, order);