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// Copyright 2017 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.
#include <cstdint>
#include <base/macros.h>
namespace thd {
// Source Interface.
// Sources are the way to read system state in thd, be it power, temperature,
// or any other information.
class Source {
// ReadValue is implemented by each logical way of retrieving state data
// (file reading, etc).
// Returns true, and sets |value| to the current value on success.
// Returns false, and leaves |value| untouched on failure.
virtual bool ReadValue(int64_t* value_out) = 0;
Source() {}
Source(const Source&) = delete;
Source& operator=(const Source&) = delete;
virtual ~Source() {}
} // namespace thd