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| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 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 | #ifndef _LIBCPP___ATOMIC_TO_GCC_ORDER_H |
| 10 | #define _LIBCPP___ATOMIC_TO_GCC_ORDER_H |
| 11 | |
| 12 | #include <__atomic/memory_order.h> |
| 13 | #include <__config> |
| 14 | |
| 15 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 16 | # pragma GCC system_header |
| 17 | #endif |
| 18 | |
| 19 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 20 | |
| 21 | #if defined(__ATOMIC_RELAXED) && defined(__ATOMIC_CONSUME) && defined(__ATOMIC_ACQUIRE) && \ |
| 22 | defined(__ATOMIC_RELEASE) && defined(__ATOMIC_ACQ_REL) && defined(__ATOMIC_SEQ_CST) |
| 23 | |
| 24 | _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) { |
| 25 | // Avoid switch statement to make this a constexpr. |
| 26 | return __order == memory_order_relaxed |
| 27 | ? __ATOMIC_RELAXED |
| 28 | : (__order == memory_order_acquire |
| 29 | ? __ATOMIC_ACQUIRE |
| 30 | : (__order == memory_order_release |
| 31 | ? __ATOMIC_RELEASE |
| 32 | : (__order == memory_order_seq_cst |
| 33 | ? __ATOMIC_SEQ_CST |
| 34 | : (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL : __ATOMIC_CONSUME)))); |
| 35 | } |
| 36 | |
| 37 | _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) { |
| 38 | // Avoid switch statement to make this a constexpr. |
| 39 | return __order == memory_order_relaxed |
| 40 | ? __ATOMIC_RELAXED |
| 41 | : (__order == memory_order_acquire |
| 42 | ? __ATOMIC_ACQUIRE |
| 43 | : (__order == memory_order_release |
| 44 | ? __ATOMIC_RELAXED |
| 45 | : (__order == memory_order_seq_cst |
| 46 | ? __ATOMIC_SEQ_CST |
| 47 | : (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE : __ATOMIC_CONSUME)))); |
| 48 | } |
| 49 | |
| 50 | #endif |
| 51 | |
| 52 | _LIBCPP_END_NAMESPACE_STD |
| 53 | |
| 54 | #endif // _LIBCPP___ATOMIC_TO_GCC_ORDER_H |
| 55 |
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