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author | Andrey Khalyavin <halyavin@gmail.com> | 2022-02-10 16:46:29 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:46:29 +0300 |
commit | f773626848a7c7456803654292e716b83d69cc12 (patch) | |
tree | db052dfcf9134f492bdbb962cb6c16cea58e1ed3 /contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h | |
parent | f43ab775d197d300eb67bd4497632b909cd7c2a5 (diff) | |
download | ydb-f773626848a7c7456803654292e716b83d69cc12.tar.gz |
Restoring authorship annotation for Andrey Khalyavin <halyavin@gmail.com>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h')
-rw-r--r-- | contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h | 346 |
1 files changed, 173 insertions, 173 deletions
diff --git a/contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h b/contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h index 5a745a2f00..6785232fe0 100644 --- a/contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h +++ b/contrib/libs/cxxsupp/libcxx/src/include/atomic_support.h @@ -1,176 +1,176 @@ -//===----------------------------------------------------------------------===//// -// +//===----------------------------------------------------------------------===//// +// // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===//// - -#ifndef ATOMIC_SUPPORT_H -#define ATOMIC_SUPPORT_H - -#include "__config" -#include "memory" // for __libcpp_relaxed_load - -#if defined(__clang__) && __has_builtin(__atomic_load_n) \ - && __has_builtin(__atomic_store_n) \ - && __has_builtin(__atomic_add_fetch) \ - && __has_builtin(__atomic_exchange_n) \ - && __has_builtin(__atomic_compare_exchange_n) \ - && defined(__ATOMIC_RELAXED) \ - && defined(__ATOMIC_CONSUME) \ - && defined(__ATOMIC_ACQUIRE) \ - && defined(__ATOMIC_RELEASE) \ - && defined(__ATOMIC_ACQ_REL) \ - && defined(__ATOMIC_SEQ_CST) -# define _LIBCPP_HAS_ATOMIC_BUILTINS -#elif defined(_LIBCPP_COMPILER_GCC) -# define _LIBCPP_HAS_ATOMIC_BUILTINS -#endif - -#if !defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS) -# if defined(_LIBCPP_WARNING) - _LIBCPP_WARNING("Building libc++ without __atomic builtins is unsupported") -# else -# warning Building libc++ without __atomic builtins is unsupported -# endif -#endif - -_LIBCPP_BEGIN_NAMESPACE_STD - -namespace { - -#if defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS) - -enum __libcpp_atomic_order { - _AO_Relaxed = __ATOMIC_RELAXED, - _AO_Consume = __ATOMIC_CONSUME, - _AO_Acquire = __ATOMIC_ACQUIRE, - _AO_Release = __ATOMIC_RELEASE, - _AO_Acq_Rel = __ATOMIC_ACQ_REL, - _AO_Seq = __ATOMIC_SEQ_CST -}; - -template <class _ValueType, class _FromType> -inline _LIBCPP_INLINE_VISIBILITY -void __libcpp_atomic_store(_ValueType* __dest, _FromType __val, - int __order = _AO_Seq) -{ - __atomic_store_n(__dest, __val, __order); -} - -template <class _ValueType, class _FromType> -inline _LIBCPP_INLINE_VISIBILITY -void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val) -{ - __atomic_store_n(__dest, __val, _AO_Relaxed); -} - -template <class _ValueType> -inline _LIBCPP_INLINE_VISIBILITY -_ValueType __libcpp_atomic_load(_ValueType const* __val, - int __order = _AO_Seq) -{ - return __atomic_load_n(__val, __order); -} - -template <class _ValueType, class _AddType> -inline _LIBCPP_INLINE_VISIBILITY -_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a, - int __order = _AO_Seq) -{ - return __atomic_add_fetch(__val, __a, __order); -} - -template <class _ValueType> -inline _LIBCPP_INLINE_VISIBILITY -_ValueType __libcpp_atomic_exchange(_ValueType* __target, - _ValueType __value, int __order = _AO_Seq) -{ - return __atomic_exchange_n(__target, __value, __order); -} - -template <class _ValueType> -inline _LIBCPP_INLINE_VISIBILITY -bool __libcpp_atomic_compare_exchange(_ValueType* __val, - _ValueType* __expected, _ValueType __after, - int __success_order = _AO_Seq, - int __fail_order = _AO_Seq) -{ - return __atomic_compare_exchange_n(__val, __expected, __after, true, - __success_order, __fail_order); -} - -#else // _LIBCPP_HAS_NO_THREADS - -enum __libcpp_atomic_order { - _AO_Relaxed, - _AO_Consume, - _AO_Acquire, - _AO_Release, - _AO_Acq_Rel, - _AO_Seq -}; - -template <class _ValueType, class _FromType> -inline _LIBCPP_INLINE_VISIBILITY -void __libcpp_atomic_store(_ValueType* __dest, _FromType __val, - int = 0) -{ - *__dest = __val; -} - -template <class _ValueType, class _FromType> -inline _LIBCPP_INLINE_VISIBILITY -void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val) -{ - *__dest = __val; -} - -template <class _ValueType> -inline _LIBCPP_INLINE_VISIBILITY -_ValueType __libcpp_atomic_load(_ValueType const* __val, - int = 0) -{ - return *__val; -} - -template <class _ValueType, class _AddType> -inline _LIBCPP_INLINE_VISIBILITY -_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a, - int = 0) -{ - return *__val += __a; -} - -template <class _ValueType> -inline _LIBCPP_INLINE_VISIBILITY -_ValueType __libcpp_atomic_exchange(_ValueType* __target, - _ValueType __value, int = _AO_Seq) -{ - _ValueType old = *__target; - *__target = __value; - return old; -} - -template <class _ValueType> -inline _LIBCPP_INLINE_VISIBILITY -bool __libcpp_atomic_compare_exchange(_ValueType* __val, - _ValueType* __expected, _ValueType __after, - int = 0, int = 0) -{ - if (*__val == *__expected) { - *__val = __after; - return true; - } - *__expected = *__val; - return false; -} - -#endif // _LIBCPP_HAS_NO_THREADS - -} // end namespace - -_LIBCPP_END_NAMESPACE_STD - -#endif // ATOMIC_SUPPORT_H +// +//===----------------------------------------------------------------------===//// + +#ifndef ATOMIC_SUPPORT_H +#define ATOMIC_SUPPORT_H + +#include "__config" +#include "memory" // for __libcpp_relaxed_load + +#if defined(__clang__) && __has_builtin(__atomic_load_n) \ + && __has_builtin(__atomic_store_n) \ + && __has_builtin(__atomic_add_fetch) \ + && __has_builtin(__atomic_exchange_n) \ + && __has_builtin(__atomic_compare_exchange_n) \ + && defined(__ATOMIC_RELAXED) \ + && defined(__ATOMIC_CONSUME) \ + && defined(__ATOMIC_ACQUIRE) \ + && defined(__ATOMIC_RELEASE) \ + && defined(__ATOMIC_ACQ_REL) \ + && defined(__ATOMIC_SEQ_CST) +# define _LIBCPP_HAS_ATOMIC_BUILTINS +#elif defined(_LIBCPP_COMPILER_GCC) +# define _LIBCPP_HAS_ATOMIC_BUILTINS +#endif + +#if !defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS) +# if defined(_LIBCPP_WARNING) + _LIBCPP_WARNING("Building libc++ without __atomic builtins is unsupported") +# else +# warning Building libc++ without __atomic builtins is unsupported +# endif +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace { + +#if defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS) + +enum __libcpp_atomic_order { + _AO_Relaxed = __ATOMIC_RELAXED, + _AO_Consume = __ATOMIC_CONSUME, + _AO_Acquire = __ATOMIC_ACQUIRE, + _AO_Release = __ATOMIC_RELEASE, + _AO_Acq_Rel = __ATOMIC_ACQ_REL, + _AO_Seq = __ATOMIC_SEQ_CST +}; + +template <class _ValueType, class _FromType> +inline _LIBCPP_INLINE_VISIBILITY +void __libcpp_atomic_store(_ValueType* __dest, _FromType __val, + int __order = _AO_Seq) +{ + __atomic_store_n(__dest, __val, __order); +} + +template <class _ValueType, class _FromType> +inline _LIBCPP_INLINE_VISIBILITY +void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val) +{ + __atomic_store_n(__dest, __val, _AO_Relaxed); +} + +template <class _ValueType> +inline _LIBCPP_INLINE_VISIBILITY +_ValueType __libcpp_atomic_load(_ValueType const* __val, + int __order = _AO_Seq) +{ + return __atomic_load_n(__val, __order); +} + +template <class _ValueType, class _AddType> +inline _LIBCPP_INLINE_VISIBILITY +_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a, + int __order = _AO_Seq) +{ + return __atomic_add_fetch(__val, __a, __order); +} + +template <class _ValueType> +inline _LIBCPP_INLINE_VISIBILITY +_ValueType __libcpp_atomic_exchange(_ValueType* __target, + _ValueType __value, int __order = _AO_Seq) +{ + return __atomic_exchange_n(__target, __value, __order); +} + +template <class _ValueType> +inline _LIBCPP_INLINE_VISIBILITY +bool __libcpp_atomic_compare_exchange(_ValueType* __val, + _ValueType* __expected, _ValueType __after, + int __success_order = _AO_Seq, + int __fail_order = _AO_Seq) +{ + return __atomic_compare_exchange_n(__val, __expected, __after, true, + __success_order, __fail_order); +} + +#else // _LIBCPP_HAS_NO_THREADS + +enum __libcpp_atomic_order { + _AO_Relaxed, + _AO_Consume, + _AO_Acquire, + _AO_Release, + _AO_Acq_Rel, + _AO_Seq +}; + +template <class _ValueType, class _FromType> +inline _LIBCPP_INLINE_VISIBILITY +void __libcpp_atomic_store(_ValueType* __dest, _FromType __val, + int = 0) +{ + *__dest = __val; +} + +template <class _ValueType, class _FromType> +inline _LIBCPP_INLINE_VISIBILITY +void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val) +{ + *__dest = __val; +} + +template <class _ValueType> +inline _LIBCPP_INLINE_VISIBILITY +_ValueType __libcpp_atomic_load(_ValueType const* __val, + int = 0) +{ + return *__val; +} + +template <class _ValueType, class _AddType> +inline _LIBCPP_INLINE_VISIBILITY +_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a, + int = 0) +{ + return *__val += __a; +} + +template <class _ValueType> +inline _LIBCPP_INLINE_VISIBILITY +_ValueType __libcpp_atomic_exchange(_ValueType* __target, + _ValueType __value, int = _AO_Seq) +{ + _ValueType old = *__target; + *__target = __value; + return old; +} + +template <class _ValueType> +inline _LIBCPP_INLINE_VISIBILITY +bool __libcpp_atomic_compare_exchange(_ValueType* __val, + _ValueType* __expected, _ValueType __after, + int = 0, int = 0) +{ + if (*__val == *__expected) { + *__val = __after; + return true; + } + *__expected = *__val; + return false; +} + +#endif // _LIBCPP_HAS_NO_THREADS + +} // end namespace + +_LIBCPP_END_NAMESPACE_STD + +#endif // ATOMIC_SUPPORT_H |