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UnhandledExceptionHandler.h
280 lines (247 loc) · 7.68 KB
/
UnhandledExceptionHandler.h
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#pragma once
#include <Windows.h>
#include <DbgHelp.h>
#include <signal.h>
#include <sstream>
#include <stdio.h>
#include "winapi_error.h"
#include "../logger/logger.h"
static BOOLEAN processingException = FALSE;
static inline const char* exceptionDescription(const DWORD& code)
{
switch (code)
{
case EXCEPTION_ACCESS_VIOLATION:
return "EXCEPTION_ACCESS_VIOLATION";
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
return "EXCEPTION_ARRAY_BOUNDS_EXCEEDED";
case EXCEPTION_BREAKPOINT:
return "EXCEPTION_BREAKPOINT";
case EXCEPTION_DATATYPE_MISALIGNMENT:
return "EXCEPTION_DATATYPE_MISALIGNMENT";
case EXCEPTION_FLT_DENORMAL_OPERAND:
return "EXCEPTION_FLT_DENORMAL_OPERAND";
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
return "EXCEPTION_FLT_DIVIDE_BY_ZERO";
case EXCEPTION_FLT_INEXACT_RESULT:
return "EXCEPTION_FLT_INEXACT_RESULT";
case EXCEPTION_FLT_INVALID_OPERATION:
return "EXCEPTION_FLT_INVALID_OPERATION";
case EXCEPTION_FLT_OVERFLOW:
return "EXCEPTION_FLT_OVERFLOW";
case EXCEPTION_FLT_STACK_CHECK:
return "EXCEPTION_FLT_STACK_CHECK";
case EXCEPTION_FLT_UNDERFLOW:
return "EXCEPTION_FLT_UNDERFLOW";
case EXCEPTION_ILLEGAL_INSTRUCTION:
return "EXCEPTION_ILLEGAL_INSTRUCTION";
case EXCEPTION_IN_PAGE_ERROR:
return "EXCEPTION_IN_PAGE_ERROR";
case EXCEPTION_INT_DIVIDE_BY_ZERO:
return "EXCEPTION_INT_DIVIDE_BY_ZERO";
case EXCEPTION_INT_OVERFLOW:
return "EXCEPTION_INT_OVERFLOW";
case EXCEPTION_INVALID_DISPOSITION:
return "EXCEPTION_INVALID_DISPOSITION";
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
return "EXCEPTION_NONCONTINUABLE_EXCEPTION";
case EXCEPTION_PRIV_INSTRUCTION:
return "EXCEPTION_PRIV_INSTRUCTION";
case EXCEPTION_SINGLE_STEP:
return "EXCEPTION_SINGLE_STEP";
case EXCEPTION_STACK_OVERFLOW:
return "EXCEPTION_STACK_OVERFLOW";
default:
return "UNKNOWN EXCEPTION";
}
}
/* Returns the index of the last backslash in the file path */
inline int GetFilenameStart(wchar_t* path)
{
int pos = 0;
int found = 0;
if (path != NULL)
{
while (path[pos] != L'\0' && pos < MAX_PATH)
{
if (path[pos] == L'\\')
{
found = pos + 1;
}
++pos;
}
}
return found;
}
inline std::wstring GetModuleName(HANDLE process, const STACKFRAME64& stack)
{
static wchar_t modulePath[MAX_PATH]{};
const size_t size = sizeof(modulePath);
memset(&modulePath[0], '\0', size);
DWORD64 moduleBase = SymGetModuleBase64(process, stack.AddrPC.Offset);
if (!moduleBase)
{
Logger::error(L"Failed to get a module. {}", get_last_error_or_default(GetLastError()));
return std::wstring();
}
if (!GetModuleFileNameW(reinterpret_cast<HINSTANCE>(moduleBase), modulePath, MAX_PATH))
{
Logger::error(L"Failed to get a module path. {}", get_last_error_or_default(GetLastError()));
return std::wstring();
}
const int start = GetFilenameStart(modulePath);
return std::wstring(modulePath, start);
}
inline std::wstring GetName(HANDLE process, const STACKFRAME64& stack)
{
static IMAGEHLP_SYMBOL64* pSymbol = static_cast<IMAGEHLP_SYMBOL64*>(malloc(sizeof(IMAGEHLP_SYMBOL64) + MAX_PATH * sizeof(TCHAR)));
if (!pSymbol)
{
return std::wstring();
}
memset(pSymbol, '\0', sizeof(*pSymbol) + MAX_PATH);
pSymbol->MaxNameLength = MAX_PATH;
pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
DWORD64 dw64Displacement = 0;
if (!SymGetSymFromAddr64(process, stack.AddrPC.Offset, &dw64Displacement, pSymbol))
{
Logger::error(L"Failed to get a symbol. {}", get_last_error_or_default(GetLastError()));
return std::wstring();
}
std::string str = pSymbol->Name;
return std::wstring(str.begin(), str.end());
}
inline std::wstring GetLine(HANDLE process, const STACKFRAME64& stack)
{
static IMAGEHLP_LINE64 line{};
memset(&line, '\0', sizeof(IMAGEHLP_LINE64));
line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
line.LineNumber = 0;
DWORD dwDisplacement = 0;
if (!SymGetLineFromAddr64(process, stack.AddrPC.Offset, &dwDisplacement, &line))
{
return std::wstring();
}
std::string fileName(line.FileName);
return L"(" + std::wstring(fileName.begin(), fileName.end()) + L":" + std::to_wstring(line.LineNumber) + L")";
}
inline void LogStackTrace()
{
CONTEXT context;
try
{
RtlCaptureContext(&context);
}
catch (...)
{
Logger::error(L"Failed to capture context. {}", get_last_error_or_default(GetLastError()));
return;
}
STACKFRAME64 stack;
memset(&stack, 0, sizeof(STACKFRAME64));
HANDLE process = GetCurrentProcess();
HANDLE thread = GetCurrentThread();
#ifdef _M_ARM64
stack.AddrPC.Offset = context.Pc;
stack.AddrStack.Offset = context.Sp;
stack.AddrFrame.Offset = context.Fp;
#else
stack.AddrPC.Offset = context.Rip;
stack.AddrStack.Offset = context.Rsp;
stack.AddrFrame.Offset = context.Rbp;
#endif
stack.AddrPC.Mode = AddrModeFlat;
stack.AddrStack.Mode = AddrModeFlat;
stack.AddrFrame.Mode = AddrModeFlat;
BOOL result = false;
std::wstringstream ss;
for (;;)
{
result = StackWalk64(
#ifdef _M_ARM64
IMAGE_FILE_MACHINE_ARM64,
#else
IMAGE_FILE_MACHINE_AMD64,
#endif
process,
thread,
&stack,
&context,
NULL,
SymFunctionTableAccess64,
SymGetModuleBase64,
NULL);
if (!result)
{
break;
}
ss << GetModuleName(process, stack) << "!" << GetName(process, stack) << GetLine(process, stack) << std::endl;
}
Logger::error(L"STACK TRACE\r\n{}", ss.str());
Logger::flush();
}
inline LONG WINAPI UnhandledExceptionHandler(PEXCEPTION_POINTERS info)
{
if (!processingException)
{
bool headerLogged = false;
try
{
const char* exDescription = "Exception code not available";
processingException = true;
if (info != NULL && info->ExceptionRecord != NULL && info->ExceptionRecord->ExceptionCode != NULL)
{
exDescription = exceptionDescription(info->ExceptionRecord->ExceptionCode);
}
headerLogged = true;
Logger::error(exDescription);
LogStackTrace();
}
catch (...)
{
Logger::error("Failed to log stack trace");
Logger::flush();
}
processingException = false;
}
return EXCEPTION_CONTINUE_SEARCH;
}
/* Handler to trap abort() calls */
inline void AbortHandler(int /*signal_number*/)
{
Logger::error("--- ABORT");
try
{
LogStackTrace();
}
catch (...)
{
Logger::error("Failed to log stack trace on abort");
Logger::flush();
}
}
inline void InitSymbols()
{
// Preload symbols so they will be available in case of out-of-memory exception
SymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_UNDNAME);
HANDLE process = GetCurrentProcess();
if (!SymInitialize(process, NULL, TRUE))
{
Logger::error(L"Failed to initialize symbol handler. {}", get_last_error_or_default(GetLastError()));
}
}
inline void InitUnhandledExceptionHandler(void)
{
try
{
InitSymbols();
// Global handler for unhandled exceptions
SetUnhandledExceptionFilter(UnhandledExceptionHandler);
// Handler for abort()
signal(SIGABRT, &AbortHandler);
}
catch (...)
{
Logger::error("Failed to init global unhandled exception handler");
}
}