/*===-- atomic_flag_test_and_set.c ------------------------------------------===
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*
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* The LLVM Compiler Infrastructure
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*
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* This file is dual licensed under the MIT and the University of Illinois Open
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* Source Licenses. See LICENSE.TXT for details.
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*
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*===------------------------------------------------------------------------===
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*
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* This file implements atomic_flag_test_and_set from C11's stdatomic.h.
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*
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*===------------------------------------------------------------------------===
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*/
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#ifndef __has_include
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#define __has_include(inc) 0
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#endif
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#if __has_include(<stdatomic.h>)
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#include <stdatomic.h>
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#undef atomic_flag_test_and_set
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_Bool atomic_flag_test_and_set(volatile atomic_flag *object) {
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return __c11_atomic_exchange(&(object)->_Value, 1, __ATOMIC_SEQ_CST);
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}
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#endif
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