src/device/bluetooth/bluetooth_socket_thread.h

   1 // Copyright 2014 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 DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_THREAD_H_
   6 #define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_THREAD_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/threading/thread_checker.h"
  11
  12 namespace base {
  13 class SequencedTaskRunner;
  14 class Thread;
  15 }  // namespace base
  16
  17 namespace device {
  18
  19 // Thread abstraction used by |BluetoothSocketChromeOS| and |BluetoothSocketWin|
  20 // to perform IO operations on the underlying platform sockets. An instance of
  21 // this class can be shared by many active sockets.
  22 class BluetoothSocketThread
  23     : public base::RefCountedThreadSafe<BluetoothSocketThread> {
  24  public:
  25   static scoped_refptr<BluetoothSocketThread> Get();
  26   void OnSocketActivate();
  27   void OnSocketDeactivate();
  28
  29   scoped_refptr<base::SequencedTaskRunner> task_runner() const;
  30
  31  private:
  32   friend class base::RefCountedThreadSafe<BluetoothSocketThread>;
  33   BluetoothSocketThread();
  34   virtual ~BluetoothSocketThread();
  35
  36   void EnsureStarted();
  37
  38   base::ThreadChecker thread_checker_;
  39   int active_socket_count_;
  40   scoped_ptr<base::Thread> thread_;
  41   scoped_refptr<base::SequencedTaskRunner> task_runner_;
  42
  43   DISALLOW_COPY_AND_ASSIGN(BluetoothSocketThread);
  44 };
  45
  46 }  // namespace device
  47
  48 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_THREAD_H_