1*0fca6ea1SDimitry Andric //===----------------------------------------------------------------------===// 2*0fca6ea1SDimitry Andric // 3*0fca6ea1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0fca6ea1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0fca6ea1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0fca6ea1SDimitry Andric // 7*0fca6ea1SDimitry Andric //===----------------------------------------------------------------------===// 8*0fca6ea1SDimitry Andric 9*0fca6ea1SDimitry Andric #ifndef _LIBCPP___ATOMIC_TO_GCC_ORDER_H 10*0fca6ea1SDimitry Andric #define _LIBCPP___ATOMIC_TO_GCC_ORDER_H 11*0fca6ea1SDimitry Andric 12*0fca6ea1SDimitry Andric #include <__atomic/memory_order.h> 13*0fca6ea1SDimitry Andric #include <__config> 14*0fca6ea1SDimitry Andric 15*0fca6ea1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16*0fca6ea1SDimitry Andric # pragma GCC system_header 17*0fca6ea1SDimitry Andric #endif 18*0fca6ea1SDimitry Andric 19*0fca6ea1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 20*0fca6ea1SDimitry Andric 21*0fca6ea1SDimitry Andric #if defined(__ATOMIC_RELAXED) && defined(__ATOMIC_CONSUME) && defined(__ATOMIC_ACQUIRE) && \ 22*0fca6ea1SDimitry Andric defined(__ATOMIC_RELEASE) && defined(__ATOMIC_ACQ_REL) && defined(__ATOMIC_SEQ_CST) 23*0fca6ea1SDimitry Andric 24*0fca6ea1SDimitry Andric _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) { 25*0fca6ea1SDimitry Andric // Avoid switch statement to make this a constexpr. 26*0fca6ea1SDimitry Andric return __order == memory_order_relaxed 27*0fca6ea1SDimitry Andric ? __ATOMIC_RELAXED 28*0fca6ea1SDimitry Andric : (__order == memory_order_acquire 29*0fca6ea1SDimitry Andric ? __ATOMIC_ACQUIRE 30*0fca6ea1SDimitry Andric : (__order == memory_order_release 31*0fca6ea1SDimitry Andric ? __ATOMIC_RELEASE 32*0fca6ea1SDimitry Andric : (__order == memory_order_seq_cst 33*0fca6ea1SDimitry Andric ? __ATOMIC_SEQ_CST 34*0fca6ea1SDimitry Andric : (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL : __ATOMIC_CONSUME)))); 35*0fca6ea1SDimitry Andric } 36*0fca6ea1SDimitry Andric 37*0fca6ea1SDimitry Andric _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) { 38*0fca6ea1SDimitry Andric // Avoid switch statement to make this a constexpr. 39*0fca6ea1SDimitry Andric return __order == memory_order_relaxed 40*0fca6ea1SDimitry Andric ? __ATOMIC_RELAXED 41*0fca6ea1SDimitry Andric : (__order == memory_order_acquire 42*0fca6ea1SDimitry Andric ? __ATOMIC_ACQUIRE 43*0fca6ea1SDimitry Andric : (__order == memory_order_release 44*0fca6ea1SDimitry Andric ? __ATOMIC_RELAXED 45*0fca6ea1SDimitry Andric : (__order == memory_order_seq_cst 46*0fca6ea1SDimitry Andric ? __ATOMIC_SEQ_CST 47*0fca6ea1SDimitry Andric : (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE : __ATOMIC_CONSUME)))); 48*0fca6ea1SDimitry Andric } 49*0fca6ea1SDimitry Andric 50*0fca6ea1SDimitry Andric #endif 51*0fca6ea1SDimitry Andric 52*0fca6ea1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 53*0fca6ea1SDimitry Andric 54*0fca6ea1SDimitry Andric #endif // _LIBCPP___ATOMIC_TO_GCC_ORDER_H 55