private void SessionOnExceptionOccurred(object sender, DebuggeeExceptionEventArgs args)
{
_logger.WriteLine(LoggerMessageType.Error, "{0} exception occurred in thread {1} with error code {2:X}. {3}.",
args.Exception.IsFirstChance ? "First chance" : "Last chance",
args.Thread.Id,
args.Exception.ErrorCode,
args.Exception.Message,
args.Exception.Continuable ? string.Empty : "Exception is fatal.");
}
private static void DebugSessionOnExceptionOccurred(object?sender, DebuggeeExceptionEventArgs e)
{
Utils.WriteLog("[Debugger] EXCEPTION!", ConsoleColor.Red);
Utils.WriteLog($"[Debugger] Error code: {e.Exception.ErrorCode}", ConsoleColor.Red);
Utils.WriteLog($"[Debugger] Message: {e.Exception.Message}", ConsoleColor.Red);
Utils.WriteLog($"[Debugger] Is continuable: {e.Exception.Continuable}", ConsoleColor.Red);
Utils.WriteLog($"[Debugger] Is first chance: {e.Exception.IsFirstChance}", ConsoleColor.Red);
if (e.Exception.Continuable)
{
e.Session.Continue(DebuggerAction.Continue);
}
}
private DebuggerAction HandleExceptionDebugEvent(DEBUG_EVENT debugEvent)
{
var info = debugEvent.InterpretDebugInfoAs <EXCEPTION_DEBUG_INFO>();
var process = GetProcessById((int)debugEvent.dwProcessId);
var thread = process.GetThreadById((int)debugEvent.dwThreadId);
var nextAction = DebuggerAction.Stop;
bool handled = false;
switch (info.ExceptionRecord.ExceptionCode)
{
case ExceptionCode.EXCEPTION_BREAKPOINT:
{
handled = _executionController.HandleBreakpointEvent(debugEvent, out nextAction);
break;
}
case ExceptionCode.EXCEPTION_SINGLE_STEP:
{
handled = _executionController.HandleStepEvent(debugEvent, out nextAction);
break;
}
case ExceptionCode.EXCEPTION_GUARD_PAGE:
{
handled = _executionController.HandlePageGuardViolationEvent(debugEvent, out nextAction);
break;
}
}
if (!handled)
{
// Forward exception to debugger.
var eventArgs = new DebuggeeExceptionEventArgs(thread,
new DebuggeeException((uint)info.ExceptionRecord.ExceptionCode,
info.ExceptionRecord.ExceptionCode.ToString(),
info.dwFirstChance == 1,
info.ExceptionRecord.ExceptionFlags == 0));
OnExceptionOccurred(eventArgs);
nextAction = eventArgs.NextAction;
}
return(nextAction);
}
protected virtual void OnExceptionOccurred(DebuggeeExceptionEventArgs e)
{
ExceptionOccurred?.Invoke(this, e);
}
protected virtual void OnExceptionOccurredEvent(DebuggeeExceptionEventArgs e)
{
if (ExceptionOccurred != null)
ExceptionOccurred(this, e);
}
internal void DispatchExceptionOccurredEvent(DebuggeeExceptionEventArgs e)
{
bool @break = false;
switch (e.ExceptionType)
{
case CorDebugExceptionCallbackType.Unhandled:
@break = true;
break;
case CorDebugExceptionCallbackType.FirstChance:
case CorDebugExceptionCallbackType.UserFirstChance:
@break = DebuggerBase.Instance.Settings.GetValue<bool>("Exceptions.BreakOnHandledException");
break;
case CorDebugExceptionCallbackType.CatchHandlerFound:
break;
}
if (!(e.Continue = !@break))
OnPaused(e);
OnExceptionOccurredEvent(e);
}
public void Exception(ICorDebugAppDomain pAppDomain, ICorDebugThread pThread, ICorDebugFrame pFrame, uint nOffset, CorDebugExceptionCallbackType dwEventType, uint dwFlags)
{
var domain = GetProcessWrapper(pAppDomain).GetAppDomain(pAppDomain);
var thread = domain.GetThread(pThread);
var frame = thread.CurrentFrame;
string exceptionType = string.Empty;
switch (dwEventType)
{
case CorDebugExceptionCallbackType.CatchHandlerFound: exceptionType = "Catch handler"; break;
case CorDebugExceptionCallbackType.FirstChance: exceptionType = "First chance"; break;
case CorDebugExceptionCallbackType.Unhandled: exceptionType = "Unhandled"; break;
case CorDebugExceptionCallbackType.UserFirstChance: exceptionType = "User first chance"; break;
}
Log("{0} exception occured in {1}, thread {2}, at offset {3}", exceptionType, domain.Name, thread.Id, nOffset);
var eventArgs = new DebuggeeExceptionEventArgs(domain, thread, nOffset, dwEventType);
domain.DispatchExceptionOccurredEvent(eventArgs);
FinalizeEvent(eventArgs);
}
