diff options
Diffstat (limited to 'indra/newview/llwindebug.cpp')
| -rw-r--r-- | indra/newview/llwindebug.cpp | 837 |
1 files changed, 58 insertions, 779 deletions
diff --git a/indra/newview/llwindebug.cpp b/indra/newview/llwindebug.cpp index 59bc9dc62b..551d0be8d7 100644 --- a/indra/newview/llwindebug.cpp +++ b/indra/newview/llwindebug.cpp @@ -1,98 +1,33 @@ -/** +/** * @file llwindebug.cpp * @brief Windows debugging functions * - * $LicenseInfo:firstyear=2004&license=viewergpl$ - * - * Copyright (c) 2004-2009, Linden Research, Inc. - * + * $LicenseInfo:firstyear=2004&license=viewerlgpl$ * 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 + * Copyright (C) 2010, Linden Research, Inc. * - * 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 + * 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. * - * 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. + * 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. * - * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO - * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, - * COMPLETENESS OR PERFORMANCE. + * 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 <tchar.h> -#include <tlhelp32.h> #include "llwindebug.h" -#include "llviewercontrol.h" #include "lldir.h" -#include "llsd.h" -#include "llsdserialize.h" - -#pragma warning(disable: 4200) //nonstandard extension used : zero-sized array in struct/union -#pragma warning(disable: 4100) //unreferenced formal parameter - - -/* -LLSD Block for Windows Dump Information -<llsd> - <map> - <key>Platform</key> - <string></string> - <key>Process</key> - <string></string> - <key>Module</key> - <string></string> - <key>DateModified</key> - <string></string> - <key>ExceptionCode</key> - <string></string> - <key>ExceptionRead/WriteAddress</key> - <string></string> - <key>Instruction</key> - <string></string> - <key>Registers</key> - <map> - <!-- Continued for all registers --> - <key>EIP</key> - <string>...</string> - <!-- ... --> - </map> - <key>Call Stack</key> - <array> - <!-- One map per stack frame --> - <map> - <key>ModuleName</key> - <string></string> - <key>ModuleBaseAddress</key> - <string></string> - <key>ModuleOffsetAddress</key> - <string></string> - <key>Parameters</key> - <array> - <string></string> - </array> - </map> - <!-- ... --> - </array> - </map> -</llsd> -*/ - - -extern void (*gCrashCallback)(void); // based on dbghelp.h typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType, @@ -103,527 +38,6 @@ typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hF MINIDUMPWRITEDUMP f_mdwp = NULL; -#undef UNICODE - -static LPTOP_LEVEL_EXCEPTION_FILTER gFilterFunc = NULL; - -HMODULE hDbgHelp; - -// Tool Help functions. -typedef HANDLE (WINAPI * CREATE_TOOL_HELP32_SNAPSHOT)(DWORD dwFlags, DWORD th32ProcessID); -typedef BOOL (WINAPI * MODULE32_FIRST)(HANDLE hSnapshot, LPMODULEENTRY32 lpme); -typedef BOOL (WINAPI * MODULE32_NEST)(HANDLE hSnapshot, LPMODULEENTRY32 lpme); - -CREATE_TOOL_HELP32_SNAPSHOT CreateToolhelp32Snapshot_; -MODULE32_FIRST Module32First_; -MODULE32_NEST Module32Next_; - -#define DUMP_SIZE_MAX 8000 //max size of our dump -#define CALL_TRACE_MAX ((DUMP_SIZE_MAX - 2000) / (MAX_PATH + 40)) //max number of traced calls -#define NL L"\r\n" //new line - - -typedef struct STACK -{ - STACK * Ebp; - PBYTE Ret_Addr; - DWORD Param[0]; -} STACK, * PSTACK; - -BOOL WINAPI Get_Module_By_Ret_Addr(PBYTE Ret_Addr, LPWSTR Module_Name, PBYTE & Module_Addr); -void WINAPI Get_Call_Stack(const EXCEPTION_RECORD* exception_record, - const CONTEXT* context_record, - LLSD& info); - -void printError( CHAR* msg ) -{ - DWORD eNum; - TCHAR sysMsg[256]; - TCHAR* p; - - eNum = GetLastError( ); - FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, eNum, - MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language - sysMsg, 256, NULL ); - - // Trim the end of the line and terminate it with a null - p = sysMsg; - while( ( *p > 31 ) || ( *p == 9 ) ) - ++p; - do { *p-- = 0; } while( ( p >= sysMsg ) && - ( ( *p == '.' ) || ( *p < 33 ) ) ); - - // Display the message - printf( "\n WARNING: %s failed with error %d (%s)", msg, eNum, sysMsg ); -} - -BOOL GetProcessThreadIDs(DWORD process_id, std::vector<DWORD>& thread_ids) -{ - HANDLE hThreadSnap = INVALID_HANDLE_VALUE; - THREADENTRY32 te32; - - // Take a snapshot of all running threads - hThreadSnap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 ); - if( hThreadSnap == INVALID_HANDLE_VALUE ) - return( FALSE ); - - // Fill in the size of the structure before using it. - te32.dwSize = sizeof(THREADENTRY32 ); - - // Retrieve information about the first thread, - // and exit if unsuccessful - if( !Thread32First( hThreadSnap, &te32 ) ) - { - printError( "Thread32First" ); // Show cause of failure - CloseHandle( hThreadSnap ); // Must clean up the snapshot object! - return( FALSE ); - } - - // Now walk the thread list of the system, - // and display information about each thread - // associated with the specified process - do - { - if( te32.th32OwnerProcessID == process_id ) - { - thread_ids.push_back(te32.th32ThreadID); - } - } while( Thread32Next(hThreadSnap, &te32 ) ); - -// Don't forget to clean up the snapshot object. - CloseHandle( hThreadSnap ); - return( TRUE ); -} - -BOOL GetThreadCallStack(DWORD thread_id, LLSD& info) -{ - if(GetCurrentThreadId() == thread_id) - { - // Early exit for the current thread. - // Suspending the current thread would be a bad idea. - // Plus you can't retrieve a valid current thread context. - return false; - } - - HANDLE thread_handle = INVALID_HANDLE_VALUE; - thread_handle = OpenThread(THREAD_ALL_ACCESS, FALSE, thread_id); - if(INVALID_HANDLE_VALUE == thread_handle) - { - return FALSE; - } - - BOOL result = false; - if(-1 != SuspendThread(thread_handle)) - { - CONTEXT context_struct; - context_struct.ContextFlags = CONTEXT_FULL; - if(GetThreadContext(thread_handle, &context_struct)) - { - Get_Call_Stack(NULL, &context_struct, info); - result = true; - } - ResumeThread(thread_handle); - } - else - { - // Couldn't suspend thread. - } - - CloseHandle(thread_handle); - return result; -} - - -//Windows Call Stack Construction idea from -//http://www.codeproject.com/tools/minidump.asp - -//**************************************************************************************** -BOOL WINAPI Get_Module_By_Ret_Addr(PBYTE Ret_Addr, LPWSTR Module_Name, PBYTE & Module_Addr) -//**************************************************************************************** -// Find module by Ret_Addr (address in the module). -// Return Module_Name (full path) and Module_Addr (start address). -// Return TRUE if found. -{ - MODULEENTRY32 M = {sizeof(M)}; - HANDLE hSnapshot; - - bool found = false; - - if (CreateToolhelp32Snapshot_) - { - hSnapshot = CreateToolhelp32Snapshot_(TH32CS_SNAPMODULE, 0); - - if ((hSnapshot != INVALID_HANDLE_VALUE) && - Module32First_(hSnapshot, &M)) - { - do - { - if (DWORD(Ret_Addr - M.modBaseAddr) < M.modBaseSize) - { - lstrcpyn(Module_Name, M.szExePath, MAX_PATH); - Module_Addr = M.modBaseAddr; - found = true; - break; - } - } while (Module32Next_(hSnapshot, &M)); - } - - CloseHandle(hSnapshot); - } - - return found; -} //Get_Module_By_Ret_Addr - -bool has_valid_call_before(PDWORD cur_stack_loc) -{ - PBYTE p_first_byte = (PBYTE)(*cur_stack_loc - 1); - PBYTE p_second_byte = (PBYTE)(*cur_stack_loc -2); - PBYTE p_fifth_byte = (PBYTE)(*cur_stack_loc - 5); - PBYTE p_sixth_byte = (PBYTE)(*cur_stack_loc - 6); - - // make sure we can read it - if(IsBadReadPtr(p_sixth_byte, 6 * sizeof(BYTE))) - { - return false; - } - - // check for 9a + 4 bytes - if(*p_fifth_byte == 0x9A) - { - return true; - } - - // Check for E8 + 4 bytes and last byte is 00 or FF - if(*p_fifth_byte == 0xE8 && (*p_first_byte == 0x00 || *p_first_byte == 0xFF)) - { - return true; - } - - // the other is six bytes - if(*p_sixth_byte == 0xFF || *p_second_byte == 0xFF) - { - return true; - } - - return false; -} - -PBYTE get_valid_frame(PBYTE esp) -{ - PDWORD cur_stack_loc = NULL; - const int max_search = 400; - WCHAR module_name[MAX_PATH]; - PBYTE module_addr = 0; - - // round to highest multiple of four - esp = (esp + (4 - ((int)esp % 4)) % 4); - - // scroll through stack a few hundred places. - for (cur_stack_loc = (PDWORD) esp; cur_stack_loc < (PDWORD)esp + max_search; cur_stack_loc += 1) - { - // if you can read the pointer, - if (IsBadReadPtr(cur_stack_loc, sizeof(PDWORD))) - { - continue; - } - - // check if it's in a module - if (!Get_Module_By_Ret_Addr((PBYTE)*cur_stack_loc, module_name, module_addr)) - { - continue; - } - - // check if the code before the instruction ptr is a call - if(!has_valid_call_before(cur_stack_loc)) - { - continue; - } - - // if these all pass, return that ebp, otherwise continue till we're dead - return (PBYTE)(cur_stack_loc - 1); - } - - return NULL; -} - -bool shouldUseStackWalker(PSTACK Ebp, int max_depth) -{ - WCHAR Module_Name[MAX_PATH]; - PBYTE Module_Addr = 0; - int depth = 0; - - while (depth < max_depth) - { - if (IsBadReadPtr(Ebp, sizeof(PSTACK)) || - IsBadReadPtr(Ebp->Ebp, sizeof(PSTACK)) || - Ebp->Ebp < Ebp || - Ebp->Ebp - Ebp > 0xFFFFFF || - IsBadCodePtr(FARPROC(Ebp->Ebp->Ret_Addr)) || - !Get_Module_By_Ret_Addr(Ebp->Ebp->Ret_Addr, Module_Name, Module_Addr)) - { - return true; - } - depth++; - Ebp = Ebp->Ebp; - } - - return false; -} - -//****************************************************************** -void WINAPI Get_Call_Stack(const EXCEPTION_RECORD* exception_record, - const CONTEXT* context_record, - LLSD& info) -//****************************************************************** -// Fill Str with call stack info. -// pException can be either GetExceptionInformation() or NULL. -// If pException = NULL - get current call stack. -{ - LPWSTR Module_Name = new WCHAR[MAX_PATH]; - PBYTE Module_Addr = 0; - LLSD params; - PBYTE Esp = NULL; - LLSD tmp_info; - - bool fake_frame = false; - bool ebp_used = false; - const int HEURISTIC_MAX_WALK = 20; - int heuristic_walk_i = 0; - int Ret_Addr_I = 0; - - STACK Stack = {0, 0}; - PSTACK Ebp; - - if (exception_record && context_record) //fake frame for exception address - { - Stack.Ebp = (PSTACK)(context_record->Ebp); - Stack.Ret_Addr = (PBYTE)exception_record->ExceptionAddress; - Ebp = &Stack; - Esp = (PBYTE) context_record->Esp; - fake_frame = true; - } - else if(context_record) - { - Ebp = (PSTACK)(context_record->Ebp); - Esp = (PBYTE)(context_record->Esp); - } - else - { - Ebp = (PSTACK)&exception_record - 1; //frame addr of Get_Call_Stack() - Esp = (PBYTE)&exception_record; - - // Skip frame of Get_Call_Stack(). - if (!IsBadReadPtr(Ebp, sizeof(PSTACK))) - Ebp = Ebp->Ebp; //caller ebp - } - - // Trace CALL_TRACE_MAX calls maximum - not to exceed DUMP_SIZE_MAX. - // Break trace on wrong stack frame. - for (Ret_Addr_I = 0; - heuristic_walk_i < HEURISTIC_MAX_WALK && - Ret_Addr_I < CALL_TRACE_MAX && !IsBadReadPtr(Ebp, sizeof(PSTACK)) && !IsBadCodePtr(FARPROC(Ebp->Ret_Addr)); - Ret_Addr_I++) - { - // If module with Ebp->Ret_Addr found. - if (Get_Module_By_Ret_Addr(Ebp->Ret_Addr, Module_Name, Module_Addr)) - { - // Save module's address and full path. - tmp_info["CallStack"][Ret_Addr_I]["ModuleName"] = ll_convert_wide_to_string(Module_Name); - tmp_info["CallStack"][Ret_Addr_I]["ModuleAddress"] = (int)Module_Addr; - tmp_info["CallStack"][Ret_Addr_I]["CallOffset"] = (int)(Ebp->Ret_Addr - Module_Addr); - - // Save 5 params of the call. We don't know the real number of params. - if (fake_frame && !Ret_Addr_I) //fake frame for exception address - params[0] = "Exception Offset"; - else if (!IsBadReadPtr(Ebp, sizeof(PSTACK) + 5 * sizeof(DWORD))) - { - for(int j = 0; j < 5; ++j) - { - params[j] = (int)Ebp->Param[j]; - } - } - tmp_info["CallStack"][Ret_Addr_I]["Parameters"] = params; - } - - tmp_info["CallStack"][Ret_Addr_I]["ReturnAddress"] = (int)Ebp->Ret_Addr; - - // get ready for next frame - // Set ESP to just after return address. Not the real esp, but just enough after the return address - if(!fake_frame) { - Esp = (PBYTE)Ebp + 8; - } - else - { - fake_frame = false; - } - - // is next ebp valid? - // only run if we've never found a good ebp - // and make sure the one after is valid as well - if( !ebp_used && - shouldUseStackWalker(Ebp, 2)) - { - heuristic_walk_i++; - PBYTE new_ebp = get_valid_frame(Esp); - if (new_ebp != NULL) - { - Ebp = (PSTACK)new_ebp; - } - } - else - { - ebp_used = true; - Ebp = Ebp->Ebp; - } - } -/* TODO remove or turn this code back on to edit the stack after i see a few raw ones. -Palmer - // Now go back through and edit out heuristic stacks that could very well be bogus. - // Leave the top and the last 3 stack chosen by the heuristic, however. - if(heuristic_walk_i > 2) - { - info["CallStack"][0] = tmp_info["CallStack"][0]; - std::string ttest = info["CallStack"][0]["ModuleName"]; - for(int cur_frame = 1; - (cur_frame + heuristic_walk_i - 2 < Ret_Addr_I); - ++cur_frame) - { - // edit out the middle heuristic found frames - info["CallStack"][cur_frame] = tmp_info["CallStack"][cur_frame + heuristic_walk_i - 2]; - } - } - else - { - info = tmp_info; - } -*/ - info = tmp_info; - info["HeuristicWalkI"] = heuristic_walk_i; - info["EbpUsed"] = ebp_used; - -} //Get_Call_Stack - -//*********************************** -void WINAPI Get_Version_Str(LLSD& info) -//*********************************** -// Fill Str with Windows version. -{ - OSVERSIONINFOEX V = {sizeof(OSVERSIONINFOEX)}; //EX for NT 5.0 and later - - if (!GetVersionEx((POSVERSIONINFO)&V)) - { - ZeroMemory(&V, sizeof(V)); - V.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); - GetVersionEx((POSVERSIONINFO)&V); - } - - if (V.dwPlatformId != VER_PLATFORM_WIN32_NT) - V.dwBuildNumber = LOWORD(V.dwBuildNumber); //for 9x HIWORD(dwBuildNumber) = 0x04xx - - info["Platform"] = llformat("Windows: %d.%d.%d, SP %d.%d, Product Type %d", //SP - service pack, Product Type - VER_NT_WORKSTATION,... - V.dwMajorVersion, V.dwMinorVersion, V.dwBuildNumber, V.wServicePackMajor, V.wServicePackMinor, V.wProductType); -} //Get_Version_Str - -//************************************************************* -LLSD WINAPI Get_Exception_Info(PEXCEPTION_POINTERS pException) -//************************************************************* -// Allocate Str[DUMP_SIZE_MAX] and return Str with dump, if !pException - just return call stack in Str. -{ - LLSD info; - LPWSTR Str; - int Str_Len; -// int i; - LPWSTR Module_Name = new WCHAR[MAX_PATH]; - PBYTE Module_Addr; - HANDLE hFile; - FILETIME Last_Write_Time; - FILETIME Local_File_Time; - SYSTEMTIME T; - - Str = new WCHAR[DUMP_SIZE_MAX]; - Str_Len = 0; - if (!Str) - return NULL; - - Get_Version_Str(info); - - GetModuleFileName(NULL, Str, MAX_PATH); - info["Process"] = ll_convert_wide_to_string(Str); - info["ThreadID"] = (S32)GetCurrentThreadId(); - - // If exception occurred. - if (pException) - { - EXCEPTION_RECORD & E = *pException->ExceptionRecord; - CONTEXT & C = *pException->ContextRecord; - - // If module with E.ExceptionAddress found - save its path and date. - if (Get_Module_By_Ret_Addr((PBYTE)E.ExceptionAddress, Module_Name, Module_Addr)) - { - info["Module"] = ll_convert_wide_to_string(Module_Name); - - if ((hFile = CreateFile(Module_Name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, - FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE) - { - if (GetFileTime(hFile, NULL, NULL, &Last_Write_Time)) - { - FileTimeToLocalFileTime(&Last_Write_Time, &Local_File_Time); - FileTimeToSystemTime(&Local_File_Time, &T); - - info["DateModified"] = llformat("%02d/%02d/%d", T.wMonth, T.wDay, T.wYear); - } - CloseHandle(hFile); - } - } - else - { - info["ExceptionAddr"] = (int)E.ExceptionAddress; - } - - info["ExceptionCode"] = (int)E.ExceptionCode; - - /* - //TODO: Fix this - if (E.ExceptionCode == EXCEPTION_ACCESS_VIOLATION) - { - // Access violation type - Write/Read. - LLSD exception_info; - exception_info["Type"] = E.ExceptionInformation[0] ? "Write" : "Read"; - exception_info["Address"] = llformat("%08x", E.ExceptionInformation[1]); - info["Exception Information"] = exception_info; - } - */ - - - // Save instruction that caused exception. - /* - std::string str; - for (i = 0; i < 16; i++) - str += llformat(" %02X", PBYTE(E.ExceptionAddress)[i]); - info["Instruction"] = str; - */ - LLSD registers; - registers["EAX"] = (int)C.Eax; - registers["EBX"] = (int)C.Ebx; - registers["ECX"] = (int)C.Ecx; - registers["EDX"] = (int)C.Edx; - registers["ESI"] = (int)C.Esi; - registers["EDI"] = (int)C.Edi; - registers["ESP"] = (int)C.Esp; - registers["EBP"] = (int)C.Ebp; - registers["EIP"] = (int)C.Eip; - registers["EFlags"] = (int)C.EFlags; - info["Registers"] = registers; - } //if (pException) - - // Save call stack info. - Get_Call_Stack(pException->ExceptionRecord, pException->ContextRecord, info); - - return info; -} //Get_Exception_Info - -#define UNICODE - class LLMemoryReserve { public: @@ -663,66 +77,23 @@ void LLMemoryReserve::release() static LLMemoryReserve gEmergencyMemoryReserve; -#ifndef _M_IX86 - #error "The following code only works for x86!" -#endif -LPTOP_LEVEL_EXCEPTION_FILTER WINAPI MyDummySetUnhandledExceptionFilter( - LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter) -{ - if(lpTopLevelExceptionFilter == gFilterFunc) - return gFilterFunc; - llinfos << "Someone tried to set the exception filter. Listing call stack modules" << llendl; - LLSD cs_info; - Get_Call_Stack(NULL, NULL, cs_info); - - if(cs_info.has("CallStack") && cs_info["CallStack"].isArray()) - { - LLSD cs = cs_info["CallStack"]; - for(LLSD::array_iterator i = cs.beginArray(); - i != cs.endArray(); - ++i) - { - llinfos << "Module: " << (*i)["ModuleName"] << llendl; - } - } - - return gFilterFunc; -} - -BOOL PreventSetUnhandledExceptionFilter() +LONG NTAPI vectoredHandler(PEXCEPTION_POINTERS exception_infop) { - HMODULE hKernel32 = LoadLibrary(_T("kernel32.dll")); - if (hKernel32 == NULL) - return FALSE; - - void *pOrgEntry = GetProcAddress(hKernel32, "SetUnhandledExceptionFilter"); - if(pOrgEntry == NULL) - return FALSE; - - unsigned char newJump[ 100 ]; - DWORD dwOrgEntryAddr = (DWORD)pOrgEntry; - dwOrgEntryAddr += 5; // add 5 for 5 op-codes for jmp far - void *pNewFunc = &MyDummySetUnhandledExceptionFilter; - DWORD dwNewEntryAddr = (DWORD) pNewFunc; - DWORD dwRelativeAddr = dwNewEntryAddr - dwOrgEntryAddr; - - newJump[ 0 ] = 0xE9; // JMP absolute - memcpy(&newJump[ 1 ], &dwRelativeAddr, sizeof(pNewFunc)); - SIZE_T bytesWritten; - BOOL bRet = WriteProcessMemory(GetCurrentProcess(), - pOrgEntry, newJump, sizeof(pNewFunc) + 1, &bytesWritten); - return bRet; + LLWinDebug::instance().generateMinidump(exception_infop); + return EXCEPTION_CONTINUE_SEARCH; } // static -void LLWinDebug::initExceptionHandler(LPTOP_LEVEL_EXCEPTION_FILTER filter_func) +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. @@ -753,160 +124,68 @@ void LLWinDebug::initExceptionHandler(LPTOP_LEVEL_EXCEPTION_FILTER filter_func) gEmergencyMemoryReserve.reserve(); s_first_run = false; - } - - // Try to get Tool Help library functions. - HMODULE hKernel32; - hKernel32 = GetModuleHandle(_T("KERNEL32")); - CreateToolhelp32Snapshot_ = (CREATE_TOOL_HELP32_SNAPSHOT)GetProcAddress(hKernel32, "CreateToolhelp32Snapshot"); - Module32First_ = (MODULE32_FIRST)GetProcAddress(hKernel32, "Module32FirstW"); - Module32Next_ = (MODULE32_NEST)GetProcAddress(hKernel32, "Module32NextW"); - - LPTOP_LEVEL_EXCEPTION_FILTER prev_filter; - prev_filter = SetUnhandledExceptionFilter(filter_func); - - // *REMOVE:Mani - //PreventSetUnhandledExceptionFilter(); - if(prev_filter != gFilterFunc) - { - LL_WARNS("AppInit") - << "Replacing unknown exception (" << (void *)prev_filter << ") with (" << (void *)filter_func << ") !" << LL_ENDL; + // Add this exeption hanlder to save windows style minidump. + AddVectoredExceptionHandler(0, &vectoredHandler); } - - gFilterFunc = filter_func; } -bool LLWinDebug::checkExceptionHandler() +void LLWinDebug::writeDumpToFile(MINIDUMP_TYPE type, MINIDUMP_EXCEPTION_INFORMATION *ExInfop, const std::string& filename) { - bool ok = true; - LPTOP_LEVEL_EXCEPTION_FILTER prev_filter; - prev_filter = SetUnhandledExceptionFilter(gFilterFunc); - - if (prev_filter != gFilterFunc) + // 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 ) { - LL_WARNS("AppInit") << "Our exception handler (" << (void *)gFilterFunc << ") replaced with " << prev_filter << "!" << LL_ENDL; - ok = false; - } - - if (prev_filter == NULL) - { - ok = FALSE; - if (gFilterFunc == NULL) + if(f_mdwp == NULL || gDirUtilp == NULL) { - LL_WARNS("AppInit") << "Exception handler uninitialized." << LL_ENDL; + return; } else { - LL_WARNS("AppInit") << "Our exception handler (" << (void *)gFilterFunc << ") replaced with NULL!" << LL_ENDL; - } - } + std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, filename); - return ok; -} + HANDLE hFile = CreateFileA(dump_path.c_str(), + GENERIC_WRITE, + FILE_SHARE_WRITE, + NULL, + CREATE_ALWAYS, + FILE_ATTRIBUTE_NORMAL, + NULL); -void LLWinDebug::writeDumpToFile(MINIDUMP_TYPE type, MINIDUMP_EXCEPTION_INFORMATION *ExInfop, const std::string& filename) -{ - if(f_mdwp == NULL || gDirUtilp == NULL) - { - return; - //write_debug("No way to generate a minidump, no MiniDumpWriteDump function!\n"); - } - 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); - if (hFile != INVALID_HANDLE_VALUE) - { - // Write the dump, ignoring the return value - f_mdwp(GetCurrentProcess(), - GetCurrentProcessId(), - hFile, - type, - ExInfop, - NULL, - NULL); + CloseHandle(hFile); + } - CloseHandle(hFile); } - } } // static -void LLWinDebug::generateCrashStacks(struct _EXCEPTION_POINTERS *exception_infop) +void LLWinDebug::generateMinidump(struct _EXCEPTION_POINTERS *exception_infop) { - // *NOTE:Mani - This method is no longer the exception handler. - // Its called from viewer_windows_exception_handler() and other places. - - // - // Let go of a bunch of reserved memory to give library calls etc - // a chance to execute normally in the case that we ran out of - // memory. - // - LLSD info; std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "SecondLifeException"); - std::string log_path = dump_path + ".log"; - if (exception_infop) { // Since there is exception info... Release the hounds. gEmergencyMemoryReserve.release(); - if(gSavedSettings.getControl("SaveMinidump").notNull() && gSavedSettings.getBOOL("SaveMinidump")) - { - _MINIDUMP_EXCEPTION_INFORMATION ExInfo; - - ExInfo.ThreadId = ::GetCurrentThreadId(); - ExInfo.ExceptionPointers = exception_infop; - ExInfo.ClientPointers = NULL; - - writeDumpToFile(MiniDumpNormal, &ExInfo, "SecondLife.dmp"); - writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLifePlus.dmp"); - } + _MINIDUMP_EXCEPTION_INFORMATION ExInfo; - info = Get_Exception_Info(exception_infop); + ExInfo.ThreadId = ::GetCurrentThreadId(); + ExInfo.ExceptionPointers = exception_infop; + ExInfo.ClientPointers = NULL; + writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLife.dmp"); } - - LLSD threads; - std::vector<DWORD> thread_ids; - GetProcessThreadIDs(GetCurrentProcessId(), thread_ids); - - for(std::vector<DWORD>::iterator th_itr = thread_ids.begin(); - th_itr != thread_ids.end(); - ++th_itr) - { - LLSD thread_info; - if(*th_itr != GetCurrentThreadId()) - { - GetThreadCallStack(*th_itr, thread_info); - } - - if(thread_info) - { - threads[llformat("ID %d", *th_itr)] = thread_info; - } - } - - info["Threads"] = threads; - - llofstream out_file(log_path); - LLSDSerialize::toPrettyXML(info, out_file); - out_file.close(); -} - -void LLWinDebug::clearCrashStacks() -{ - LLSD info; - std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "SecondLifeException.log"); - LLFile::remove(dump_path); } |