/indra/newview/llwindebug.cpp
C++ | 191 lines | 122 code | 31 blank | 38 comment | 15 complexity | 19c343004ff573d8636b5bbfabb8847e MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file llwindebug.cpp
- * @brief Windows debugging functions
- *
- * $LicenseInfo:firstyear=2004&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #include "llviewerprecompiledheaders.h"
- #include "llwindebug.h"
- #include "lldir.h"
- // based on dbghelp.h
- typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
- CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
- CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
- CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam
- );
- MINIDUMPWRITEDUMP f_mdwp = NULL;
- class LLMemoryReserve {
- public:
- LLMemoryReserve();
- ~LLMemoryReserve();
- void reserve();
- void release();
- protected:
- unsigned char *mReserve;
- static const size_t MEMORY_RESERVATION_SIZE;
- };
- LLMemoryReserve::LLMemoryReserve() :
- mReserve(NULL)
- {
- };
- LLMemoryReserve::~LLMemoryReserve()
- {
- release();
- }
- // I dunno - this just seemed like a pretty good value.
- const size_t LLMemoryReserve::MEMORY_RESERVATION_SIZE = 5 * 1024 * 1024;
- void LLMemoryReserve::reserve()
- {
- if(NULL == mReserve)
- mReserve = new unsigned char[MEMORY_RESERVATION_SIZE];
- };
- void LLMemoryReserve::release()
- {
- delete [] mReserve;
- mReserve = NULL;
- };
- static LLMemoryReserve gEmergencyMemoryReserve;
- LONG NTAPI vectoredHandler(PEXCEPTION_POINTERS exception_infop)
- {
- LLWinDebug::instance().generateMinidump(exception_infop);
- return EXCEPTION_CONTINUE_SEARCH;
- }
- // static
- void LLWinDebug::init()
- {
- static bool s_first_run = true;
- // Load the dbghelp dll now, instead of waiting for the crash.
- // Less potential for stack mangling
- // Don't install vectored exception handler if being debugged.
- if(IsDebuggerPresent()) return;
- if (s_first_run)
- {
- // First, try loading from the directory that the app resides in.
- std::string local_dll_name = gDirUtilp->findFile("dbghelp.dll", gDirUtilp->getWorkingDir(), gDirUtilp->getExecutableDir());
- HMODULE hDll = NULL;
- hDll = LoadLibraryA(local_dll_name.c_str());
- if (!hDll)
- {
- hDll = LoadLibrary(L"dbghelp.dll");
- }
- if (!hDll)
- {
- LL_WARNS("AppInit") << "Couldn't find dbghelp.dll!" << LL_ENDL;
- }
- else
- {
- f_mdwp = (MINIDUMPWRITEDUMP) GetProcAddress(hDll, "MiniDumpWriteDump");
- if (!f_mdwp)
- {
- FreeLibrary(hDll);
- hDll = NULL;
- }
- }
- gEmergencyMemoryReserve.reserve();
- s_first_run = false;
- // Add this exeption hanlder to save windows style minidump.
- AddVectoredExceptionHandler(0, &vectoredHandler);
- }
- }
- void LLWinDebug::writeDumpToFile(MINIDUMP_TYPE type, MINIDUMP_EXCEPTION_INFORMATION *ExInfop, const std::string& filename)
- {
- // Temporary fix to switch out the code that writes the DMP file.
- // Fix coming that doesn't write a mini dump file for regular C++ exceptions.
- const bool enable_write_dump_file = false;
- if ( enable_write_dump_file )
- {
- if(f_mdwp == NULL || gDirUtilp == NULL)
- {
- return;
- }
- else
- {
- std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, filename);
- HANDLE hFile = CreateFileA(dump_path.c_str(),
- GENERIC_WRITE,
- FILE_SHARE_WRITE,
- NULL,
- CREATE_ALWAYS,
- FILE_ATTRIBUTE_NORMAL,
- NULL);
- if (hFile != INVALID_HANDLE_VALUE)
- {
- // Write the dump, ignoring the return value
- f_mdwp(GetCurrentProcess(),
- GetCurrentProcessId(),
- hFile,
- type,
- ExInfop,
- NULL,
- NULL);
- CloseHandle(hFile);
- }
- }
- }
- }
- // static
- void LLWinDebug::generateMinidump(struct _EXCEPTION_POINTERS *exception_infop)
- {
- std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,
- "SecondLifeException");
- if (exception_infop)
- {
- // Since there is exception info... Release the hounds.
- gEmergencyMemoryReserve.release();
- _MINIDUMP_EXCEPTION_INFORMATION ExInfo;
- ExInfo.ThreadId = ::GetCurrentThreadId();
- ExInfo.ExceptionPointers = exception_infop;
- ExInfo.ClientPointers = NULL;
- writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLife.dmp");
- }
- }