bridges/inc/msvc/except.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #define WIN32_LEAN_AND_MEAN
  23 #include <windows.h>
  24
  25 #include <sal/config.h>
  26 #include <rtl/ustrbuf.hxx>
  27 #include <osl/mutex.hxx>
  28
  29 #include <mutex>
  30 #include <unordered_map>
  31
  32 typedef struct _uno_Any uno_Any;
  33 typedef struct _uno_Mapping uno_Mapping;
  34
  35 int msvc_filterCppException(EXCEPTION_POINTERS*, uno_Any*, uno_Mapping*);
  36 [[noreturn]] void msvc_raiseException(uno_Any*, uno_Mapping*);
  37
  38 constexpr DWORD MSVC_EH_MAGIC_PARAM = 0x19930520;
  39 // The NT Exception code that msvcrt uses ('msc' | 0xE0000000)
  40 constexpr DWORD MSVC_EH_MAGIC_CODE = 0xE06D7363;
  41
  42 #if defined(_M_IX86)
  43 #define MSVC_EH_PARAMETERS 3 // Number of parameters in exception record for x86
  44 #elif defined(_M_AMD64) || defined(_M_ARM64)
  45 #define MSVC_EH_PARAMETERS 4 // Number of parameters in exception record for AMD64
  46 #else
  47 #error "Unsupported machine type"
  48 #endif
  49
  50 class type_info;
  51 struct RaiseInfo;
  52 typedef std::unordered_map<OUString, void*> t_string2PtrMap;
  53 typedef struct _typelib_TypeDescription typelib_TypeDescription;
  54
  55 // fixed class, because sizeof(ExceptionTypeInfo) must be sizeof(type_info)
  56 // this is tested by a static_assert, so can't break.
  57 class ExceptionTypeInfo final
  58 {
  59     friend int msvc_filterCppException(EXCEPTION_POINTERS*, uno_Any*, uno_Mapping*);
  60
  61     void* m_data;
  62     char m_d_name[1];
  63
  64 public:
  65     explicit ExceptionTypeInfo(void* data, const char* d_name) noexcept
  66         : m_data(data)
  67     {
  68         ::strcpy(m_d_name, d_name); // #100211# - checked
  69     }
  70     virtual ~ExceptionTypeInfo() noexcept;
  71 };
  72
  73 class ExceptionTypeInfoWrapper final
  74 {
  75     int type_info_size;
  76     ExceptionTypeInfo info;
  77
  78 public:
  79     explicit ExceptionTypeInfoWrapper(void* m_data, const char* m_d_name) noexcept
  80         : info(m_data, m_d_name)
  81     {
  82         type_info_size = sizeof(ExceptionTypeInfo) + strlen(m_d_name);
  83     }
  84
  85     type_info* get_type_info() { return reinterpret_cast<type_info*>(&info); }
  86     int get_type_info_size() { return type_info_size; }
  87 };
  88
  89 class RTTInfos final
  90 {
  91     osl::Mutex m_aMutex;
  92     t_string2PtrMap m_allRTTI;
  93
  94     RTTInfos() noexcept;
  95     ExceptionTypeInfoWrapper* getInfo(OUString const& rUNOname) noexcept;
  96
  97 public:
  98     ~RTTInfos();
  99
 100     static type_info* get(OUString const& rUNOname, int* len = nullptr) noexcept;
 101 };
 102
 103 class ExceptionInfos final
 104 {
 105     std::mutex m_aMutex;
 106     t_string2PtrMap m_allRaiseInfos;
 107
 108 public:
 109     static RaiseInfo* getRaiseInfo(typelib_TypeDescription* pTD) noexcept;
 110
 111     static DWORD allocationGranularity;
 112
 113     ExceptionInfos() noexcept;
 114     ~ExceptionInfos() noexcept;
 115 };
 116
 117 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */