Index: chromeos/system/cpu_temp_reader.h |
diff --git a/chromeos/system/cpu_temp_reader.h b/chromeos/system/cpu_temp_reader.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..77f711ab544aa205f98573fc2d2dc75c0826527f |
--- /dev/null |
+++ b/chromeos/system/cpu_temp_reader.h |
@@ -0,0 +1,57 @@ |
+// Copyright 2017 The Chromium 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 CHROMEOS_SYSTEM_CPU_TEMP_READER_H_ |
+#define CHROMEOS_SYSTEM_CPU_TEMP_READER_H_ |
+ |
+#include <string> |
+#include <utility> |
+#include <vector> |
+ |
+#include "base/macros.h" |
+ |
+namespace chromeos { |
+namespace system { |
+ |
+// Contains info from a CPU temperature sensor. |
+struct CPUTemperatureInfo { |
stevenjb
2017/04/17 16:49:00
Make this a member of the class.
Simon Que
2017/04/17 17:07:48
Done.
|
+ // The temperature read by a CPU temperature sensor in degrees Celsius. |
+ double temp_celsius; |
stevenjb
2017/04/17 16:49:00
blank line
Simon Que
2017/04/17 17:07:48
Done.
|
+ // The name of the CPU temperature zone monitored by this sensor. Used to |
+ // identify the source of each temperature reading. Taken from sysfs "name" |
+ // or "label" field, if it exists. |
+ std::string label; |
+ |
+ bool operator<(const CPUTemperatureInfo& other) const { |
+ return std::make_pair(temp_celsius, label) < |
+ std::make_pair(other.temp_celsius, label); |
+ } |
+}; |
+ |
+// Used to read CPU temperature info from sysfs hwmon. |
+class CPUTemperatureReader { |
stevenjb
2017/04/17 16:49:00
File name should match the class name.
Simon Que
2017/04/17 17:07:48
Done.
|
+ public: |
+ CPUTemperatureReader(); |
+ |
+ // Read temperature from each thermal sensor of the CPU. Returns a vector |
+ // containing a reading from each sensor. |
+ // |
+ // This is a blocking function that performs file operations. Users of this |
+ // function can choose to call it from a task runner instead. |
stevenjb
2017/04/17 16:49:00
Instead of what? Implemented this way, callers *mu
Simon Que
2017/04/17 17:07:48
Do you have an example of Chrome code that does no
stevenjb
2017/04/17 17:24:40
I'm not sure what you mean. There is no such thing
|
+ std::vector<CPUTemperatureInfo> GetCPUTemperatures(); |
+ |
+ void set_hwmon_dir_for_test(const std::string& dir) { hwmon_dir_ = dir; } |
+ |
+ private: |
+ // Sysfs hwmon directory path. Gets initialized to a default value but can be |
+ // overriden by set_hwmon_dir_for_test(). |
+ std::string hwmon_dir_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(CPUTemperatureReader); |
+}; |
+ |
+} // namespace system |
+} // namespace chromeos |
+ |
+#endif // CHROMEOS_SYSTEM_CPU_TEMP_READER_H_ |