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Diffstat (limited to 'indra/newview/llwindebug.cpp')
| -rw-r--r-- | indra/newview/llwindebug.cpp | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/indra/newview/llwindebug.cpp b/indra/newview/llwindebug.cpp new file mode 100644 index 0000000000..502fefd4ef --- /dev/null +++ b/indra/newview/llwindebug.cpp @@ -0,0 +1,188 @@ +/** + * @file llwindebug.cpp + * @brief Windows debugging functions + * + * $LicenseInfo:firstyear=2004&license=viewergpl$ + * + * Copyright (c) 2004-2009, Linden Research, Inc. + * + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 + * + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at + * http://secondlifegrid.net/programs/open_source/licensing/flossexception + * + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. + * + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. + * $/LicenseInfo$ + */ +#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 + + 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) +{ + 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"); + } +} |