private void OnStartDebuggingFailed(Exception exception)
{
Logger.Flush();
SendStartDebuggingError(exception);
Dispose();
}
public void Send(string cmd)
{
_logger?.WriteLine("<-" + cmd);
_logger?.Flush();
_asyncCommand.WriteLine(cmd);
}
private void TransportLoop()
{
try
{
while (!_bQuit)
{
string line = GetLine();
if (line == null)
{
break;
}
line = line.TrimEnd();
Logger?.WriteLine("->" + line);
Logger?.Flush();
try
{
if (_filterStdout)
{
line = FilterLine(line);
}
if (!String.IsNullOrWhiteSpace(line) && !line.StartsWith("-", StringComparison.Ordinal))
{
_callback.OnStdOutLine(line);
}
}
catch (ObjectDisposedException)
{
Debug.Assert(_bQuit);
break;
}
}
if (!_bQuit)
{
OnReadStreamAborted();
}
}
finally
{
lock (_locker)
{
_bQuit = true;
_streamReadCancellationTokenSource.Dispose();
// If we are shutting down without notice from the debugger (e.g., the terminal
// where the debugger was hosted was closed), at this point it's possible that
// there is a thread blocked doing a read() syscall.
ForceDisposeStreamReader(_reader);
try
{
_writer.Dispose();
}
catch
{
// This can fail flush side effects if the debugger goes down. When this happens we don't want
// to crash OpenDebugAD7/VS. Stack:
// System.IO.UnixFileStream.WriteNative(Byte[] array, Int32 offset, Int32 count)
// System.IO.UnixFileStream.FlushWriteBuffer()
// System.IO.UnixFileStream.Dispose(Boolean disposing)
// System.IO.FileStream.Dispose(Boolean disposing)
// System.IO.Stream.Close()
// System.IO.StreamWriter.Dispose(Boolean disposing)
// System.IO.TextWriter.Dispose()
}
}
}
}
// Launches a process by means of the debug engine.
// Normally, Visual Studio launches a program using the IDebugPortEx2::LaunchSuspended method and then attaches the debugger
// to the suspended program. However, there are circumstances in which the debug engine may need to launch a program
// (for example, if the debug engine is part of an interpreter and the program being debugged is an interpreted language),
// in which case Visual Studio uses the IDebugEngineLaunch2::LaunchSuspended method
// The IDebugEngineLaunch2::ResumeProcess method is called to start the process after the process has been successfully launched in a suspended state.
int IDebugEngineLaunch2.LaunchSuspended(string pszServer, IDebugPort2 port, string exe, string args, string dir, string env, string options, enum_LAUNCH_FLAGS launchFlags, uint hStdInput, uint hStdOutput, uint hStdError, IDebugEventCallback2 ad7Callback, out IDebugProcess2 process)
{
Debug.Assert(_pollThread == null);
Debug.Assert(_engineCallback == null);
Debug.Assert(_debuggedProcess == null);
Debug.Assert(_ad7ProgramId == Guid.Empty);
// Check if the logger was enabled late.
Logger.LoadMIDebugLogger(_configStore);
process = null;
_engineCallback = new EngineCallback(this, ad7Callback);
Exception exception;
try
{
// Note: LaunchOptions.GetInstance can be an expensive operation and may push a wait message loop
LaunchOptions launchOptions = LaunchOptions.GetInstance(_configStore, exe, args, dir, options, _engineCallback, TargetEngine.Native, Logger);
// We are being asked to debug a process when we currently aren't debugging anything
_pollThread = new WorkerThread(Logger);
var cancellationTokenSource = new CancellationTokenSource();
using (cancellationTokenSource)
{
_pollThread.RunOperation(ResourceStrings.InitializingDebugger, cancellationTokenSource, (HostWaitLoop waitLoop) =>
{
try
{
_debuggedProcess = new DebuggedProcess(true, launchOptions, _engineCallback, _pollThread, _breakpointManager, this, _configStore);
}
finally
{
// If there is an exception from the DebuggeedProcess constructor, it is our responsibility to dispose the DeviceAppLauncher,
// otherwise the DebuggedProcess object takes ownership.
if (_debuggedProcess == null && launchOptions.DeviceAppLauncher != null)
{
launchOptions.DeviceAppLauncher.Dispose();
}
}
_pollThread.PostedOperationErrorEvent += _debuggedProcess.OnPostedOperationError;
return(_debuggedProcess.Initialize(waitLoop, cancellationTokenSource.Token));
});
}
EngineUtils.RequireOk(port.GetProcess(_debuggedProcess.Id, out process));
return(Constants.S_OK);
}
catch (Exception e) when(ExceptionHelper.BeforeCatch(e, Logger, reportOnlyCorrupting: true))
{
exception = e;
// Return from the catch block so that we can let the exception unwind - the stack can get kind of big
}
// If we just return the exception as an HRESULT, we will loose our message, so we instead send up an error event, and then
// return E_ABORT.
Logger.Flush();
SendStartDebuggingError(exception);
Dispose();
return(Constants.E_ABORT);
}
