STL/stl/inc/xthreads.h

159 строки
5.3 KiB
C++

// xthreads.h internal header
// Copyright (c) Microsoft Corporation.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#pragma once
#ifndef _THR_XTHREADS_H
#define _THR_XTHREADS_H
#include <yvals_core.h>
#if _STL_COMPILER_PREPROCESSOR
#include <climits>
#include <xtimec.h>
#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;
};
// Size and alignment for _Mtx_internal_imp_t and _Cnd_internal_imp_t
#ifdef _CRT_WINDOWS
#ifdef _WIN64
#define _Mtx_internal_imp_size 32
#define _Mtx_internal_imp_alignment 8
#define _Cnd_internal_imp_size 16
#define _Cnd_internal_imp_alignment 8
#else // _WIN64
#define _Mtx_internal_imp_size 20
#define _Mtx_internal_imp_alignment 4
#define _Cnd_internal_imp_size 8
#define _Cnd_internal_imp_alignment 4
#endif // _WIN64
#else // _CRT_WINDOWS
#ifdef _WIN64
#define _Mtx_internal_imp_size 80
#define _Mtx_internal_imp_alignment 8
#define _Cnd_internal_imp_size 72
#define _Cnd_internal_imp_alignment 8
#else // _WIN64
#define _Mtx_internal_imp_size 48
#define _Mtx_internal_imp_alignment 4
#define _Cnd_internal_imp_size 40
#define _Cnd_internal_imp_alignment 4
#endif // _WIN64
#endif // _CRT_WINDOWS
using _Mtx_t = struct _Mtx_internal_imp_t*;
using _Cnd_t = struct _Cnd_internal_imp_t*;
enum { _Thrd_success, _Thrd_nomem, _Thrd_timedout, _Thrd_busy, _Thrd_error };
// threads
_CRTIMP2_PURE int __cdecl _Thrd_detach(_Thrd_t);
_CRTIMP2_PURE int __cdecl _Thrd_join(_Thrd_t, int*);
_CRTIMP2_PURE void __cdecl _Thrd_sleep(const xtime*);
_CRTIMP2_PURE void __cdecl _Thrd_yield();
_CRTIMP2_PURE unsigned int __cdecl _Thrd_hardware_concurrency();
_CRTIMP2_PURE _Thrd_id_t __cdecl _Thrd_id();
// mutexes
enum { // mutex types
_Mtx_plain = 0x01,
_Mtx_try = 0x02,
_Mtx_timed = 0x04,
_Mtx_recursive = 0x100
};
_CRTIMP2_PURE int __cdecl _Mtx_init(_Mtx_t*, int);
_CRTIMP2_PURE void __cdecl _Mtx_destroy(_Mtx_t);
_CRTIMP2_PURE void __cdecl _Mtx_init_in_situ(_Mtx_t, int);
_CRTIMP2_PURE void __cdecl _Mtx_destroy_in_situ(_Mtx_t);
_CRTIMP2_PURE int __cdecl _Mtx_current_owns(_Mtx_t);
_CRTIMP2_PURE int __cdecl _Mtx_lock(_Mtx_t);
_CRTIMP2_PURE int __cdecl _Mtx_trylock(_Mtx_t);
_CRTIMP2_PURE int __cdecl _Mtx_timedlock(_Mtx_t, const xtime*);
_CRTIMP2_PURE int __cdecl _Mtx_unlock(_Mtx_t); // TRANSITION, ABI: always returns _Thrd_success
_CRTIMP2_PURE void* __cdecl _Mtx_getconcrtcs(_Mtx_t);
_CRTIMP2_PURE void __cdecl _Mtx_clear_owner(_Mtx_t);
_CRTIMP2_PURE void __cdecl _Mtx_reset_owner(_Mtx_t);
// shared mutex
// these declarations must be in sync with those in sharedmutex.cpp
using _Smtx_t = void*;
void __cdecl _Smtx_lock_exclusive(_Smtx_t*);
void __cdecl _Smtx_lock_shared(_Smtx_t*);
int __cdecl _Smtx_try_lock_exclusive(_Smtx_t*);
int __cdecl _Smtx_try_lock_shared(_Smtx_t*);
void __cdecl _Smtx_unlock_exclusive(_Smtx_t*);
void __cdecl _Smtx_unlock_shared(_Smtx_t*);
// condition variables
_CRTIMP2_PURE int __cdecl _Cnd_init(_Cnd_t*);
_CRTIMP2_PURE void __cdecl _Cnd_destroy(_Cnd_t);
_CRTIMP2_PURE void __cdecl _Cnd_init_in_situ(_Cnd_t);
_CRTIMP2_PURE void __cdecl _Cnd_destroy_in_situ(_Cnd_t);
_CRTIMP2_PURE int __cdecl _Cnd_wait(_Cnd_t, _Mtx_t); // TRANSITION, ABI: Always returns _Thrd_success
_CRTIMP2_PURE int __cdecl _Cnd_timedwait(_Cnd_t, _Mtx_t, const xtime*);
_CRTIMP2_PURE int __cdecl _Cnd_broadcast(_Cnd_t); // TRANSITION, ABI: Always returns _Thrd_success
_CRTIMP2_PURE int __cdecl _Cnd_signal(_Cnd_t); // TRANSITION, ABI: Always returns _Thrd_success
_CRTIMP2_PURE void __cdecl _Cnd_register_at_thread_exit(_Cnd_t, _Mtx_t, int*);
_CRTIMP2_PURE void __cdecl _Cnd_unregister_at_thread_exit(_Mtx_t);
_CRTIMP2_PURE void __cdecl _Cnd_do_broadcast_at_thread_exit();
_END_EXTERN_C
_STD_BEGIN
enum { // constants for error codes
_DEVICE_OR_RESOURCE_BUSY,
_INVALID_ARGUMENT,
_NO_SUCH_PROCESS,
_NOT_ENOUGH_MEMORY,
_OPERATION_NOT_PERMITTED,
_RESOURCE_DEADLOCK_WOULD_OCCUR,
_RESOURCE_UNAVAILABLE_TRY_AGAIN
};
[[noreturn]] _CRTIMP2_PURE void __cdecl _Throw_C_error(int _Code);
[[noreturn]] _CRTIMP2_PURE void __cdecl _Throw_Cpp_error(int _Code);
inline int _Check_C_return(int _Res) { // throw exception on failure
if (_Res != _Thrd_success) {
_Throw_C_error(_Res);
}
return _Res;
}
_STD_END
#pragma pop_macro("new")
_STL_RESTORE_CLANG_WARNINGS
#pragma warning(pop)
#pragma pack(pop)
#endif // _STL_COMPILER_PREPROCESSOR
#endif // _THR_XTHREADS_H
/*
* 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.
*/