1//===-- atomic_flag_test_and_set_explicit.c -------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file implements atomic_flag_test_and_set_explicit from C11's stdatomic.h 10// 11//===----------------------------------------------------------------------===// 12 13#ifndef __has_include 14#define __has_include(inc) 0 15#endif 16 17#if __has_include(<stdatomic.h>) 18 19#include <stdatomic.h> 20#undef atomic_flag_test_and_set_explicit 21_Bool atomic_flag_test_and_set_explicit(volatile atomic_flag *object, 22 memory_order order) { 23 return __c11_atomic_exchange(&(object)->_Value, 1, order); 24} 25 26#endif 27