[Chromoting] The desktop process now creates a pre-connected pipe and passes (with some help of the…

remoting/host/desktop_session_win.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_HOST_DESKTOP_SESSION_WIN_H_
 #define REMOTING_HOST_DESKTOP_SESSION_WIN_H_
 
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/win/scoped_handle.h"
+#include "ipc/ipc_platform_file.h"
 #include "remoting/host/desktop_session.h"
 #include "remoting/host/win/wts_console_observer.h"
 #include "remoting/host/worker_process_ipc_delegate.h"
 
-namespace base {
-class SingleThreadTaskRunner;
-}  // namespace base
+namespace tracked_objects {
+class Location;
+}  // namespace tracked_objects
 
 namespace remoting {
 
+class AutoThreadTaskRunner;
 class DaemonProcess;
 class WorkerProcessLauncher;
 class WtsConsoleMonitor;
 
 // DesktopSession implementation which attaches to the host's physical console.
 // Receives IPC messages from the desktop process, running in the console
 // session, via |WorkerProcessIpcDelegate|, and monitors console session
 // attach/detach events via |WtsConsoleObserer|.
 // TODO(alexeypa): replace |WtsConsoleObserver| with an interface capable of
 // monitoring both the console and RDP connections. See http://crbug.com/137696.
 class DesktopSessionWin
     : public DesktopSession,
       public WorkerProcessIpcDelegate,
       public WtsConsoleObserver {
  public:
   // Passes the owning |daemon_process|, a unique identifier of the desktop
   // session |id| and the interface for monitoring console session attach/detach
   // events. Both |daemon_process| and |monitor| must outlive |this|.
   DesktopSessionWin(
-    scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-    scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
+    scoped_refptr<AutoThreadTaskRunner> main_task_runner,
+    scoped_refptr<AutoThreadTaskRunner> io_task_runner,
     DaemonProcess* daemon_process,
     int id,
     WtsConsoleMonitor* monitor);
   virtual ~DesktopSessionWin();
 
   // WorkerProcessIpcDelegate implementation.
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OnPermanentError() OVERRIDE;
 
   // WtsConsoleObserver implementation.
   virtual void OnSessionAttached(uint32 session_id) OVERRIDE;
   virtual void OnSessionDetached() OVERRIDE;
 
  private:
+  // ChromotingDesktopDaemonMsg_DesktopAttached handler.
+  void OnDesktopSessionAgentAttached(IPC::PlatformFileForTransit desktop_pipe);
+
+  // Restarts the desktop process.
+  void RestartDesktopProcess(const tracked_objects::Location& location);
+
   // Task runner on which public methods of this class should be called.
-  scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
+  scoped_refptr<AutoThreadTaskRunner> main_task_runner_;
 
   // Message loop used by the IPC channel.
-  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
+  scoped_refptr<AutoThreadTaskRunner> io_task_runner_;
 
   // Contains the full path to the desktop binary.
   FilePath desktop_binary_;
 
+  // Handle of the desktop process.
+  base::win::ScopedHandle desktop_process_;
+
   // Launches and monitors the desktop process.
   scoped_ptr<WorkerProcessLauncher> launcher_;
 
   // Pointer used to unsubscribe from session attach and detach events.
   WtsConsoleMonitor* monitor_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopSessionWin);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_DESKTOP_SESSION_WIN_H_