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2a504a6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | // -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of libcu++, the C++ Standard Library for your entire system,
// 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
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCUDACXX_CXX_ATOMIC_H
#define _LIBCUDACXX_CXX_ATOMIC_H
template <typename _Tp, int _Sco>
struct __cxx_atomic_base_impl {
using __underlying_t = _Tp;
using __temporary_t = __cxx_atomic_base_impl<_Tp, _Sco>;
using __wrap_t = __cxx_atomic_base_impl<_Tp, _Sco>;
static constexpr int __sco = _Sco;
#if !defined(_LIBCUDACXX_COMPILER_GCC) || (__GNUC__ >= 5)
static_assert(is_trivially_copyable<_Tp>::value,
"std::atomic<Tp> requires that 'Tp' be a trivially copyable type");
#endif
constexpr
__cxx_atomic_base_impl() noexcept = default;
constexpr
__cxx_atomic_base_impl(__cxx_atomic_base_impl &&) noexcept = default;
_LIBCUDACXX_INLINE_VISIBILITY constexpr explicit
__cxx_atomic_base_impl(_Tp value) noexcept : __a_value(value) {}
__cxx_atomic_base_impl& operator=(const __cxx_atomic_base_impl &) noexcept = default;
_ALIGNAS(sizeof(_Tp)) _Tp __a_value;
};
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
_Tp* __cxx_get_underlying_atomic(__cxx_atomic_base_impl<_Tp, _Sco> * __a) noexcept {
return &__a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
volatile _Tp* __cxx_get_underlying_atomic(__cxx_atomic_base_impl<_Tp, _Sco> volatile* __a) noexcept {
return &__a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const _Tp* __cxx_get_underlying_atomic(__cxx_atomic_base_impl<_Tp, _Sco> const* __a) noexcept {
return &__a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const volatile _Tp* __cxx_get_underlying_atomic(__cxx_atomic_base_impl<_Tp, _Sco> const volatile* __a) noexcept {
return &__a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
__cxx_atomic_base_impl<_Tp, _Sco>* __cxx_atomic_unwrap(__cxx_atomic_base_impl<_Tp, _Sco>* __a) noexcept {
return __a;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
volatile __cxx_atomic_base_impl<_Tp, _Sco>* __cxx_atomic_unwrap(__cxx_atomic_base_impl<_Tp, _Sco> volatile* __a) noexcept {
return __a;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const __cxx_atomic_base_impl<_Tp, _Sco>* __cxx_atomic_unwrap(__cxx_atomic_base_impl<_Tp, _Sco> const* __a) noexcept {
return __a;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const volatile __cxx_atomic_base_impl<_Tp, _Sco>* __cxx_atomic_unwrap(__cxx_atomic_base_impl<_Tp, _Sco> const volatile* __a) noexcept {
return __a;
}
template <typename _Tp, int _Sco>
struct __cxx_atomic_ref_base_impl {
using __underlying_t = _Tp;
using __temporary_t = _Tp;
using __wrap_t = _Tp;
static constexpr int __sco = _Sco;
#if !defined(_LIBCUDACXX_COMPILER_GCC) || (__GNUC__ >= 5)
static_assert(is_trivially_copyable<_Tp>::value,
"std::atomic_ref<Tp> requires that 'Tp' be a trivially copyable type");
#endif
constexpr
__cxx_atomic_ref_base_impl() noexcept = delete;
constexpr
__cxx_atomic_ref_base_impl(__cxx_atomic_ref_base_impl &&) noexcept = default;
constexpr
__cxx_atomic_ref_base_impl(const __cxx_atomic_ref_base_impl &) noexcept = default;
_LIBCUDACXX_INLINE_VISIBILITY constexpr explicit
__cxx_atomic_ref_base_impl(_Tp& value) noexcept : __a_value(&value) {}
_Tp* __a_value;
};
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
_Tp* __cxx_get_underlying_atomic(__cxx_atomic_ref_base_impl<_Tp, _Sco>* __a) noexcept {
return __a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
volatile _Tp* __cxx_get_underlying_atomic(__cxx_atomic_ref_base_impl<_Tp, _Sco> volatile* __a) noexcept {
return __a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const _Tp* __cxx_get_underlying_atomic(__cxx_atomic_ref_base_impl<_Tp, _Sco> const* __a) noexcept {
return __a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const volatile _Tp* __cxx_get_underlying_atomic(__cxx_atomic_ref_base_impl<_Tp, _Sco> const volatile* __a) noexcept {
return __a->__a_value;
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
_Tp* __cxx_atomic_unwrap(__cxx_atomic_ref_base_impl<_Tp, _Sco>* __a) noexcept {
return __cxx_get_underlying_atomic(__a);
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
volatile _Tp* __cxx_atomic_unwrap(__cxx_atomic_ref_base_impl<_Tp, _Sco> volatile* __a) noexcept {
return __cxx_get_underlying_atomic(__a);
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const _Tp* __cxx_atomic_unwrap(__cxx_atomic_ref_base_impl<_Tp, _Sco> const* __a) noexcept {
return __cxx_get_underlying_atomic(__a);
}
template <typename _Tp, int _Sco>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
const volatile _Tp* __cxx_atomic_unwrap(__cxx_atomic_ref_base_impl<_Tp, _Sco> const volatile* __a) noexcept {
return __cxx_get_underlying_atomic(__a);
}
template <typename _Tp>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
_Tp* __cxx_get_underlying_atomic(_Tp* __a) noexcept {
return __a;
}
template <typename _Tp, typename _Up>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
auto __cxx_atomic_wrap_to_base(_Tp*, _Up __val) noexcept -> typename _Tp::__wrap_t {
return typename _Tp::__wrap_t(__val);
}
template <typename _Tp>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
auto __cxx_atomic_base_temporary(_Tp*) noexcept -> typename _Tp::__temporary_t {
return typename _Tp::__temporary_t();
}
template <typename _Tp>
using __cxx_atomic_underlying_t = typename _Tp::__underlying_t;
#endif //_LIBCUDACXX_CXX_ATOMIC_H
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