cooling_device.h

// Copyright 2015 The Chromium OS 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 THERMALD_COOLING_DEVICE_H_
#define THERMALD_COOLING_DEVICE_H_

#include "base/macros.h"
#include "base/files/file_path.h"

namespace thermald {

// Interface for interacting with a cooling device of the Linux kernel thermal
// subsystem: https://www.kernel.org/doc/Documentation/thermal/sysfs-api.txt
class CoolingDevice {
 public:
  // Constructs a cooling device which corresponds to the cooling device with
  // the specified id exposed by the kernel.
  explicit CoolingDevice(int id);

  // Set the current throttle state of the cooling device.
  bool SetThrottleState(int state);

  // Get the current throttle state of the cooling device.
  bool GetThrottleState(int *state) const;

  int id() const { return id_; }

 private:
  const int id_;
  const base::FilePath cur_state_attr_;

  DISALLOW_COPY_AND_ASSIGN(CoolingDevice);
};

}  // namespace thermald

#endif  // THERMALD_COOLING_DEVICE_H_