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
