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__msvc_threads_core.hpp
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__msvc_threads_core.hpp
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// __msvc_threads_core.hpp internal header (core)
// Copyright (c) Microsoft Corporation.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#ifndef __MSVC_THREADS_CORE_HPP
#define __MSVC_THREADS_CORE_HPP
#include <yvals_core.h>
#if _STL_COMPILER_PREPROCESSOR
#include <type_traits>
#pragma pack(push, _CRT_PACKING)
#pragma warning(push, _STL_WARNING_LEVEL)
#pragma warning(disable : _STL_DISABLED_WARNINGS)
_STL_DISABLE_CLANG_WARNINGS
#pragma push_macro("new")
#undef new
extern "C" {
using _Thrd_id_t = unsigned int;
struct _Thrd_t { // thread identifier for Win32
void* _Hnd; // Win32 HANDLE
_Thrd_id_t _Id;
};
using _Smtx_t = void*;
enum class _Thrd_result : int { _Success, _Nomem, _Timedout, _Busy, _Error };
struct _Stl_critical_section {
void* _Unused = nullptr; // TRANSITION, ABI: was the vptr
_Smtx_t _M_srw_lock = nullptr;
};
struct _Mtx_internal_imp_t {
#if defined(_CRT_WINDOWS) || defined(UNDOCKED_WINDOWS_UCRT)
#ifdef _WIN64
static constexpr size_t _Critical_section_size = 16;
#else // ^^^ defined(_WIN64) / !defined(_WIN64) vvv
static constexpr size_t _Critical_section_size = 8;
#endif // ^^^ !defined(_WIN64) ^^^
#else // ^^^ Windows private STL / public STL vvv
#ifdef _WIN64
static constexpr size_t _Critical_section_size = 64;
#else // ^^^ defined(_WIN64) / !defined(_WIN64) vvv
static constexpr size_t _Critical_section_size = 36;
#endif // ^^^ !defined(_WIN64) ^^^
#endif // ^^^ public STL ^^^
static constexpr size_t _Critical_section_align = alignof(void*);
int _Type{};
union {
_Stl_critical_section _Critical_section{};
_STD _Aligned_storage_t<_Critical_section_size, _Critical_section_align> _Cs_storage;
};
long _Thread_id{};
int _Count{};
};
// Size and alignment for _Cnd_internal_imp_t
#if defined(_CRT_WINDOWS) // for Windows-internal code
_INLINE_VAR constexpr size_t _Cnd_internal_imp_size = 2 * sizeof(void*);
#elif defined(_WIN64) // ordinary 64-bit code
_INLINE_VAR constexpr size_t _Cnd_internal_imp_size = 72;
#else // vvv ordinary 32-bit code vvv
_INLINE_VAR constexpr size_t _Cnd_internal_imp_size = 40;
#endif // ^^^ ordinary 32-bit code ^^^
_INLINE_VAR constexpr size_t _Cnd_internal_imp_alignment = alignof(void*);
using _Mtx_t = _Mtx_internal_imp_t*;
#ifdef _M_CEE // avoid warning LNK4248: unresolved typeref token for '_Cnd_internal_imp_t'; image may not run
using _Cnd_t = void*;
#else // ^^^ defined(_M_CEE) / !defined(_M_CEE) vvv
struct _Cnd_internal_imp_t;
using _Cnd_t = _Cnd_internal_imp_t*;
#endif // ^^^ !defined(_M_CEE) ^^^
} // extern "C"
#pragma pop_macro("new")
_STL_RESTORE_CLANG_WARNINGS
#pragma warning(pop)
#pragma pack(pop)
#endif // _STL_COMPILER_PREPROCESSOR
#endif // __MSVC_THREADS_CORE_HPP
/*
* This file is derived from software bearing the following
* restrictions:
*
* (c) Copyright William E. Kempf 2001
*
* Permission to use, copy, modify, distribute and sell this
* software and its documentation for any purpose is hereby
* granted without fee, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation. William E. Kempf makes no representations
* about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*/