tools/android/forwarder2/device_controller.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef TOOLS_ANDROID_FORWARDER2_DEVICE_CONTROLLER_H_
   6 #define TOOLS_ANDROID_FORWARDER2_DEVICE_CONTROLLER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/containers/hash_tables.h"
  12 #include "base/memory/linked_ptr.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "tools/android/forwarder2/socket.h"
  17
  18 namespace base {
  19 class SingleThreadTaskRunner;
  20 }  // namespace base
  21
  22 namespace forwarder2 {
  23
  24 class DeviceListener;
  25
  26 // There is a single DeviceController per device_forwarder process, and it is in
  27 // charge of managing all active redirections on the device side (one
  28 // DeviceListener each).
  29 class DeviceController {
  30  public:
  31   static scoped_ptr<DeviceController> Create(const std::string& adb_unix_socket,
  32                                              int exit_notifier_fd);
  33   ~DeviceController();
  34
  35   void Start();
  36
  37  private:
  38   typedef base::hash_map<
  39       int /* port */, linked_ptr<DeviceListener> > ListenersMap;
  40
  41   DeviceController(scoped_ptr<Socket> host_socket, int exit_notifier_fd);
  42
  43   void AcceptHostCommandSoon();
  44   void AcceptHostCommandInternal();
  45
  46   // Note that this can end up being called after the DeviceController is
  47   // destroyed which is why a weak pointer is used.
  48   static void DeleteListenerOnError(
  49       const base::WeakPtr<DeviceController>& device_controller_ptr,
  50       scoped_ptr<DeviceListener> device_listener);
  51
  52   const scoped_ptr<Socket> host_socket_;
  53   // Used to notify the controller to exit.
  54   const int exit_notifier_fd_;
  55   // Lets ensure DeviceListener instances are deleted on the thread they were
  56   // created on.
  57   const scoped_refptr<base::SingleThreadTaskRunner> construction_task_runner_;
  58   ListenersMap listeners_;
  59
  60   //WeakPtrFactory's documentation says:
  61   // Member variables should appear before the WeakPtrFactory, to ensure
  62   // that any WeakPtrs to Controller are invalidated before its members
  63   // variable's destructors are executed, rendering them invalid.
  64   base::WeakPtrFactory<DeviceController> weak_ptr_factory_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(DeviceController);
  67 };
  68
  69 }  // namespace forwarder
  70
  71 #endif  // TOOLS_ANDROID_FORWARDER2_DEVICE_CONTROLLER_H_