git.sesse.net Git - casparcg/blob - common/exception/win32_exception.cpp

   1 /*\r
   2 * Copyright 2013 Sveriges Television AB http://casparcg.com/\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../stdafx.h"\r
  23 \r
  24 #include <boost/thread.hpp>\r
  25 \r
  26 #include "win32_exception.h"\r
  27 \r
  28 #include "../log/log.h"\r
  29 #include "../concurrency/executor.h"\r
  30 \r
  31 namespace caspar {\r
  32 \r
  33 bool& installed_for_thread()\r
  34 {\r
  35         static boost::thread_specific_ptr<bool> installed;\r
  36 \r
  37         auto for_thread = installed.get();\r
  38         \r
  39         if (!for_thread)\r
  40         {\r
  41                 for_thread = new bool(false);\r
  42                 installed.reset(for_thread);\r
  43         }\r
  44 \r
  45         return *for_thread;\r
  46 }\r
  47 \r
  48 void win32_exception::install_handler() \r
  49 {\r
  50 //#ifndef _DEBUG\r
  51         _set_se_translator(win32_exception::Handler);\r
  52         installed_for_thread() = true;\r
  53 //#endif\r
  54 }\r
  55 \r
  56 void win32_exception::ensure_handler_installed_for_thread(\r
  57                 const char* thread_description)\r
  58 {\r
  59         if (!installed_for_thread())\r
  60         {\r
  61                 install_handler();\r
  62 \r
  63                 if (thread_description)\r
  64                         detail::SetThreadName(GetCurrentThreadId(), thread_description);\r
  65         }\r
  66 }\r
  67 \r
  68 void win32_exception::Handler(unsigned int errorCode, EXCEPTION_POINTERS* pInfo) {\r
  69         switch(errorCode)\r
  70         {\r
  71         case EXCEPTION_ACCESS_VIOLATION:\r
  72                 throw win32_access_violation(*(pInfo->ExceptionRecord));\r
  73                 break;\r
  74 \r
  75         default:\r
  76                 throw win32_exception(*(pInfo->ExceptionRecord));\r
  77         }\r
  78 }\r
  79 \r
  80 win32_exception::win32_exception(const EXCEPTION_RECORD& info) : message_("Win32 exception"), location_(info.ExceptionAddress), errorCode_(info.ExceptionCode)\r
  81 {\r
  82         switch(info.ExceptionCode)\r
  83         {\r
  84         case EXCEPTION_ACCESS_VIOLATION:\r
  85                 message_ = "Access violation";\r
  86                 break;\r
  87         case EXCEPTION_FLT_DIVIDE_BY_ZERO:\r
  88         case EXCEPTION_INT_DIVIDE_BY_ZERO:\r
  89                 message_ = "Divide by zero";\r
  90                 break;\r
  91         }\r
  92 }\r
  93 \r
  94 win32_access_violation::win32_access_violation(const EXCEPTION_RECORD& info) : win32_exception(info), isWrite_(false), badAddress_(0) \r
  95 {\r
  96         isWrite_ = info.ExceptionInformation[0] == 1;\r
  97         badAddress_ = reinterpret_cast<win32_exception::address>(info.ExceptionInformation[1]);\r
  98 }\r
  99 \r
 100 const char* win32_access_violation::what() const\r
 101 {\r
 102         sprintf_s<>(messageBuffer_, "Access violation at %p, trying to %s %p", location(), isWrite_?"write":"read", badAddress_);\r
 103 \r
 104         return messageBuffer_;\r
 105 }\r
 106 \r
 107 }