зеркало из https://github.com/microsoft/STL.git
58 строки
1.7 KiB
C++
58 строки
1.7 KiB
C++
// new standard header
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// Copyright (c) Microsoft Corporation.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#pragma once
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#ifndef _NEW_
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#define _NEW_
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#include <yvals_core.h>
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#if _STL_COMPILER_PREPROCESSOR
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#include <exception>
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#include <vcruntime_new.h>
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#pragma pack(push, _CRT_PACKING)
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#pragma warning(push, _STL_WARNING_LEVEL)
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#pragma warning(disable : _STL_DISABLED_WARNINGS)
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_STL_DISABLE_CLANG_WARNINGS
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#pragma push_macro("new")
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#undef new
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_STD_BEGIN
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#if _HAS_CXX17
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// FUNCTION TEMPLATE launder
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template <class _Ty>
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_NODISCARD constexpr _Ty* launder(_Ty* _Ptr) noexcept {
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static_assert(!is_function_v<_Ty> && !is_void_v<_Ty>,
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"N4727 21.6.4 [ptr.launder]/3: The program is ill-formed if T is a function type or cv void.");
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return __builtin_launder(_Ptr);
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}
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#if defined(_M_IX86) || defined(_M_X64) || defined(_M_ARM) || defined(_M_ARM64)
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inline constexpr size_t hardware_constructive_interference_size = 64;
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inline constexpr size_t hardware_destructive_interference_size = 64;
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#else // ^^^ supported hardware ^^^ // vvv unsupported hardware vvv
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#error Unsupported architecture
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#endif // hardware
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#endif // _HAS_CXX17
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// SUPPORT TYPES
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#if !defined(_INC_NEW) || !defined(_MSC_EXTENSIONS)
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// handler for operator new failures
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using new_handler = void(__CLRCALL_PURE_OR_CDECL*)();
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#endif // !defined(_INC_NEW) || !defined(_MSC_EXTENSIONS)
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// FUNCTION AND OBJECT DECLARATIONS
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_CRTIMP2 new_handler __cdecl set_new_handler(_In_opt_ new_handler) noexcept;
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_NODISCARD _CRTIMP2 new_handler __cdecl get_new_handler() noexcept;
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_STD_END
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#pragma pop_macro("new")
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_STL_RESTORE_CLANG_WARNINGS
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#pragma warning(pop)
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#pragma pack(pop)
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#endif // _STL_COMPILER_PREPROCESSOR
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#endif // _NEW_
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