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1 // Copyright 2017 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 CHROMEOS_SYSTEM_CPU_TEMPERATURE_READER_H_ | |
6 #define CHROMEOS_SYSTEM_CPU_TEMPERATURE_READER_H_ | |
7 | |
8 #include <string> | |
9 #include <utility> | |
10 #include <vector> | |
11 | |
12 #include "base/bind.h" | |
13 #include "base/callback.h" | |
14 #include "base/macros.h" | |
15 | |
16 namespace chromeos { | |
17 namespace system { | |
18 | |
19 // Used to read CPU temperature info from sysfs hwmon. | |
20 class CPUTemperatureReader { | |
21 public: | |
22 // Contains info from a CPU temperature sensor. | |
23 struct CPUTemperatureInfo { | |
24 // The temperature read by a CPU temperature sensor in degrees Celsius. | |
25 double temp_celsius; | |
26 | |
27 // The name of the CPU temperature zone monitored by this sensor. Used to | |
28 // identify the source of each temperature reading. Taken from sysfs "name" | |
29 // or "label" field, if it exists. | |
30 std::string label; | |
31 | |
32 bool operator<(const CPUTemperatureInfo& other) const { | |
33 return std::make_pair(temp_celsius, label) < | |
34 std::make_pair(other.temp_celsius, label); | |
35 } | |
36 }; | |
37 | |
38 using GetCPUTemperaturesCallback = | |
39 base::Callback<void(const std::vector<CPUTemperatureInfo>&)>; | |
40 | |
41 CPUTemperatureReader(); | |
Daniel Erat
2017/04/20 21:23:53
declare a d'tor here and define it in the .cc file
Simon Que
2017/04/21 08:52:26
Done.
| |
42 | |
43 // Read temperature from each thermal sensor of the CPU. Returns a vector | |
44 // containing a reading from each sensor to |callback|. This function can be | |
Daniel Erat
2017/04/20 21:23:53
nit: change second sentence to "Asynchronously run
Simon Que
2017/04/21 08:52:26
Done.
| |
45 // called on the main UI thread. | |
46 void GetCPUTemperatures(const GetCPUTemperaturesCallback& callback); | |
47 | |
48 void set_hwmon_dir_for_test(const std::string& dir) { hwmon_dir_ = dir; } | |
Daniel Erat
2017/04/20 21:23:53
nit: inline getters/setters usually come after d't
Simon Que
2017/04/21 08:52:26
Done.
| |
49 | |
50 private: | |
51 // Sysfs hwmon directory path. Gets initialized to a default value but can be | |
52 // overriden by set_hwmon_dir_for_test(). | |
Daniel Erat
2017/04/20 21:23:53
nit: don't need second sentence
Simon Que
2017/04/21 08:52:26
Done.
| |
53 std::string hwmon_dir_; | |
54 | |
55 DISALLOW_COPY_AND_ASSIGN(CPUTemperatureReader); | |
56 }; | |
57 | |
58 } // namespace system | |
59 } // namespace chromeos | |
60 | |
61 #endif // CHROMEOS_SYSTEM_CPU_TEMPERATURE_READER_H_ | |
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