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/*===-- atomic_flag_test_and_set.c ------------------------------------------===
*
* The LLVM Compiler Infrastructure
*
* This file is dual licensed under the MIT and the University of Illinois Open
* Source Licenses. See LICENSE.TXT for details.
*
*===------------------------------------------------------------------------===
*
* 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
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