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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_THREAD_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_THREAD_H_
#include <atomic>
#include <memory>
#include "base/atomicops.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread_checker.h"
#include "device/bluetooth/bluetooth_export.h"
namespace base {
class SequencedTaskRunner;
class Thread;
} // namespace base
namespace device {
// Thread abstraction used by |BluetoothSocketBlueZ| and |BluetoothSocketWin|
// to perform IO operations on the underlying platform sockets. An instance of
// this class can be shared by many active sockets.
class DEVICE_BLUETOOTH_EXPORT BluetoothSocketThread
: public base::RefCountedThreadSafe<BluetoothSocketThread> {
public:
static scoped_refptr<BluetoothSocketThread> Get();
BluetoothSocketThread(const BluetoothSocketThread&) = delete;
BluetoothSocketThread& operator=(const BluetoothSocketThread&) = delete;
static void CleanupForTesting();
void OnSocketActivate();
void OnSocketDeactivate();
scoped_refptr<base::SequencedTaskRunner> task_runner() const;
private:
friend class base::RefCountedThreadSafe<BluetoothSocketThread>;
BluetoothSocketThread();
virtual ~BluetoothSocketThread();
void EnsureStarted();
base::ThreadChecker thread_checker_;
std::atomic<int> active_socket_count_{0};
std::unique_ptr<base::Thread> thread_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
};
} // namespace device
#endif // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_THREAD_H_
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