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 <unordered_map>
  30
  31 typedef struct _uno_Any uno_Any;
  32 typedef struct _uno_Mapping uno_Mapping;
  33
  34 int msvc_filterCppException(EXCEPTION_POINTERS*, uno_Any*, uno_Mapping*);
  35 void msvc_raiseException(uno_Any*, uno_Mapping*);
  36
  37 constexpr DWORD MSVC_EH_MAGIC_PARAM = 0x19930520;
  38 // The NT Exception code that msvcrt uses ('msc' | 0xE0000000)
  39 constexpr DWORD MSVC_EH_MAGIC_CODE = 0xE06D7363;
  40
  41 #if defined(_M_IX86)
  42 #define MSVC_EH_PARAMETERS 3 // Number of parameters in exception record for x86
  43 #elif defined(_M_AMD64) || defined(_M_ARM64)
  44 #define MSVC_EH_PARAMETERS 4 // Number of parameters in exception record for AMD64
  45 #else
  46 #error "Unsupported machine type"
  47 #endif
  48
  49 class type_info;
  50 struct RaiseInfo;
  51 typedef std::unordered_map<OUString, void*> t_string2PtrMap;
  52 typedef struct _typelib_TypeDescription typelib_TypeDescription;
  53
  54 // fixed class, because sizeof(ExceptionTypeInfo) must be sizeof(type_info)
  55 // this is tested by a static_assert, so can't break.
  56 class ExceptionTypeInfo final
  57 {
  58     friend int msvc_filterCppException(EXCEPTION_POINTERS*, uno_Any*, uno_Mapping*);
  59
  60     void* m_data;
  61     char m_d_name[1];
  62
  63 public:
  64     explicit ExceptionTypeInfo(void* data, const char* d_name) noexcept
  65         : m_data(data)
  66     {
  67         ::strcpy(m_d_name, d_name); // #100211# - checked
  68     }
  69     virtual ~ExceptionTypeInfo() noexcept;
  70 };
  71
  72 class ExceptionTypeInfoWrapper final
  73 {
  74     int type_info_size;
  75     ExceptionTypeInfo info;
  76
  77 public:
  78     explicit ExceptionTypeInfoWrapper(void* m_data, const char* m_d_name) noexcept
  79         : info(m_data, m_d_name)
  80     {
  81         type_info_size = sizeof(ExceptionTypeInfo) + strlen(m_d_name);
  82     }
  83
  84     type_info* get_type_info() { return reinterpret_cast<type_info*>(&info); }
  85     int get_type_info_size() { return type_info_size; }
  86 };
  87
  88 class RTTInfos final
  89 {
  90     osl::Mutex m_aMutex;
  91     t_string2PtrMap m_allRTTI;
  92
  93     RTTInfos() noexcept;
  94     ExceptionTypeInfoWrapper* getInfo(OUString const& rUNOname) noexcept;
  95
  96 public:
  97     ~RTTInfos();
  98
  99     static type_info* get(OUString const& rUNOname, int* len = nullptr) noexcept;
 100 };
 101
 102 class ExceptionInfos final
 103 {
 104     osl::Mutex m_aMutex;
 105     t_string2PtrMap m_allRaiseInfos;
 106
 107 public:
 108     static RaiseInfo* getRaiseInfo(typelib_TypeDescription* pTD) noexcept;
 109
 110     static DWORD allocationGranularity;
 111
 112     ExceptionInfos() noexcept;
 113     ~ExceptionInfos() noexcept;
 114 };
 115
 116 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */