Bump version numbers

Add logic to use actual device paths for the PWM sensors instead of their
standart HWMON paths.

This was done after noticing that due to the load order of kernel modules,
the index of HWMON paths could change.

.gitignore

@@ -1,3 +1,8 @@
 oot/
 compile_commands.json
 .cache/
+pkg/
+rel_oot/
+./src
+*.pkg.tar.zst
+*.tar.gz

LICENSE

@@ -0,0 +1,674 @@
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

PKGBUILD

@@ -0,0 +1,21 @@
+pkgname=fantasize
+pkgver=0.3.0
+pkgrel=1
+pkgdesc='C++ fan control for Linux'
+url='https://github.com/Tabascl/fantasize.git'
+source=("$pkgname-$pkgver.tar.gz::https://github.com/Tabascl/fantasize/archive/refs/tags/v$pkgver.tar.gz")
+arch=('x86_64')
+license=('GPL3')
+makedepends=('git' 'meson' 'nlohmann-json' 'boost')
+sha256sums=('SKIP')
+
+build() {
+    meson setup build "$pkgname-$pkgver/app" -Dbuildtype=Release
+    cd build
+    meson compile
+}
+
+package() {
+    cd build
+    meson install
+}

README.md

@@ -0,0 +1,3 @@
+# Fantasize
+
+[Github Mirror Repo](https://github.com/Tabascl/fantasize)

app/CMakeLists.txt

@@ -1,18 +0,0 @@
-cmake_minimum_required(VERSION 3.0)
-
-project(fantasize)
-
-set(CMAKE_BUILD_TYPE Debug)
-set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-
-
-add_executable(app
-  src/main.cxx
-  src/nvidia.cxx
-  src/pwm.cxx
-)
-
-set_property(TARGET app PROPERTY CXX_STANDARD 17)
-
-target_include_directories(app PUBLIC include /opt/cuda)
-target_link_libraries(app PUBLIC sensors nvidia-ml)

app/include/App.h

@@ -0,0 +1,36 @@
+#ifndef APP_H_
+#define APP_H_
+
+#include <memory>
+
+#include <Controller.h>
+#include <FanGenerator.h>
+#include <Serializer.h>
+#include <fan/FanLabeler.h>
+#include <pwm/PWMControlFacade.h>
+#include <sensor/SensorManager.h>
+
+class App {
+public:
+  void Init();
+
+  void InitialSetup();
+  void NormalOperation();
+
+  void Shutdown();
+
+private:
+  SensorManager mSensorManager;
+  Serializer mSerializer;
+  PWMControlFacade mPWMControlFacade;
+  FanLabeler mFanLabeler;
+  FanGenerator mFanGenerator;
+
+  std::shared_ptr<Settings> mSettings;
+
+  std::unique_ptr<Controller> mController;
+
+  std::vector<std::shared_ptr<Fan>> mFans;
+};
+
+#endif // APP_H_

app/include/ConfigManager.h

@@ -0,0 +1,28 @@
+#ifndef CONFIGMANAGER_H_
+#define CONFIGMANAGER_H_
+
+#include <memory>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+
+#include <fan/Fan.h>
+
+#define CONFIG_FILE "/etc/fantasize/config.json"
+
+using json = nlohmann::json;
+
+class ConfigManager {
+public:
+  ConfigManager();
+  ~ConfigManager();
+
+  void WriteConfig();
+
+  void SaveFans(std::vector<std::shared_ptr<Fan>> fans);
+
+private:
+  json mConfig;
+};
+
+#endif // CONFIGMANAGER_H_

app/include/Controller.h

@@ -0,0 +1,31 @@
+#ifndef CONTROLLER_H_
+#define CONTROLLER_H_
+
+#include <memory>
+#include <thread>
+#include <vector>
+
+#include <Settings.h>
+#include <fan/FanCurve.h>
+
+class Controller {
+public:
+  Controller(std::shared_ptr<Settings> settings,
+             std::vector<std::shared_ptr<FanCurve>> curves);
+  ~Controller();
+
+  void StartFanControlLoop();
+  void StopFanControlLoop();
+
+private:
+  void Loop();
+
+  int mTimeout;
+
+  std::vector<std::shared_ptr<FanCurve>> mFanCurves;
+  std::atomic<bool> mRun;
+
+  std::unique_ptr<std::thread> mWorker;
+};
+
+#endif // CONTROLLER_H_

app/include/FanGenerator.h

@@ -0,0 +1,23 @@
+#ifndef MAPPING_H_
+#define MAPPING_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Fan.h>
+#include <pwm/PWMControl.h>
+#include <sensor/Sensor.h>
+
+class FanGenerator {
+public:
+  std::vector<std::shared_ptr<Fan>>
+  FindFans(std::vector<std::shared_ptr<Sensor>> rpmSensors,
+           std::vector<std::shared_ptr<PWMControl>> pwmControls);
+
+private:
+  template <class Printable>
+  void print(std::string listLabel,
+             std::vector<std::shared_ptr<Printable>> list);
+};
+
+#endif // MAPPING_H_

app/include/Printable.h

@@ -0,0 +1,11 @@
+#ifndef PRINTABLE_H_
+#define PRINTABLE_H_
+
+#include <string>
+
+class Printable {
+public:
+  virtual const std::string toString() const = 0;
+};
+
+#endif // PRINTABLE_H_

app/include/Serializable.h

@@ -0,0 +1,13 @@
+#ifndef SERIALIZABLE_H_
+#define SERIALIZABLE_H_
+
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+class Serializable {
+public:
+  virtual json toJson() const = 0;
+};
+
+#endif // SERIALIZABLE_H_

app/include/Serializer.h

@@ -0,0 +1,38 @@
+#ifndef SERIALIZER_H_
+#define SERIALIZER_H_
+
+#include <memory>
+#include <vector>
+
+#include <nlohmann/json.hpp>
+
+#include <Settings.h>
+#include <fan/Aggregators.h>
+#include <fan/Fan.h>
+#include <fan/FanCurve.h>
+#include <sensor/Sensor.h>
+
+#define SERIALIZATION_DIR "/etc/fantasize"
+#define FANS_JSON_FILENAME "fans.json"
+
+using json = nlohmann::json;
+
+class Serializer {
+public:
+  Serializer();
+  void SerializeFans(std::vector<std::shared_ptr<Fan>> fans);
+  std::vector<std::shared_ptr<Fan>>
+  DeserializeFans(std::vector<std::shared_ptr<Sensor>> availableSensors);
+  std::vector<std::shared_ptr<FanCurve>>
+  DeserializeFanCurves(std::vector<std::shared_ptr<Sensor>> availableSensors,
+                       std::vector<std::shared_ptr<Fan>> availableFans,
+                       bool &everythingFound);
+  std::shared_ptr<Settings> DeserializeSettings();
+
+private:
+  void WriteJson(json o);
+  json ReadJson();
+  std::unique_ptr<Aggregator> aggregatorFromString(std::string str) const;
+};
+
+#endif // SERIALIZER_H_

app/include/Settings.h

@@ -0,0 +1,17 @@
+#ifndef SETTINGS_H_
+#define SETTINGS_H_
+
+#define FREQUENCY_DEFAULT 1
+
+class Settings {
+public:
+  Settings(int frequency);
+
+  int Frequency() const;
+
+private:
+  void LogSettings();
+  int mFrequency;
+};
+
+#endif // SETTINGS_H_

app/include/fan/Aggregators.h

@@ -0,0 +1,27 @@
+#ifndef AGGREGATORS_H_
+#define AGGREGATORS_H_
+
+#include <sensor/Sensor.h>
+
+class Aggregator
+{
+public:
+  virtual int aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const = 0;
+  virtual const std::string toString() const = 0;
+};
+
+class AverageAggregator : public Aggregator
+{
+public:
+  int aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const override;
+  const std::string toString() const override;
+};
+
+class MaxAggregator : public Aggregator
+{
+public:
+  int aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const override;
+  const std::string toString() const override;
+};
+
+#endif // AGGERGATORS_H_

app/include/fan/Fan.h

@@ -0,0 +1,29 @@
+#ifndef FAN_H_
+#define FAN_H_
+
+#include <Printable.h>
+#include <Serializable.h>
+
+class Fan : public Serializable, public Printable {
+public:
+  virtual void PWM(int percent) = 0;
+  virtual int RPM() = 0;
+
+  virtual void Label(std::string label) = 0;
+
+  virtual void MinPWM(int value) = 0;
+  virtual int MinPWM() = 0;
+
+  virtual void StartPWM(int value) = 0;
+  virtual int StartPWM() = 0;
+
+  virtual void ZeroFanModeSupported(bool value) = 0;
+  virtual bool ZeroFanModeSupported() = 0;
+
+  virtual void FindPWMLimits() = 0;
+  virtual void AdjustPWMLimits() = 0;
+
+  virtual void EnforceSetValue() = 0;
+};
+
+#endif // FAN_H_

app/include/fan/FanCurve.h

@@ -0,0 +1,38 @@
+#ifndef FANCURVE_H_
+#define FANCURVE_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Aggregators.h>
+#include <fan/HwmonFan.h>
+#include <sensor/Sensor.h>
+
+struct FanStep {
+  int Temp;
+  int Percent;
+};
+
+class FanCurve {
+public:
+  FanCurve(std::vector<FanStep> steps,
+           std::vector<std::shared_ptr<Sensor>> sensors,
+           std::vector<std::shared_ptr<Fan>> fans,
+           std::unique_ptr<Aggregator> aggregator, int hysteresis);
+
+  void DoFanControl();
+
+private:
+  void PrintInfo();
+  bool ExceedsHysteresis(int temperature);
+  void ApplyFanPower(std::shared_ptr<Fan> fan, int targetFanPower);
+
+  std::vector<FanStep> mSteps;
+  std::vector<std::shared_ptr<Sensor>> mTempSensors;
+  std::vector<std::shared_ptr<Fan>> mFans;
+  std::unique_ptr<Aggregator> mAggregator;
+  int mHystersis;
+  int mLastTemperature;
+};
+
+#endif // FANCURVE_H_

app/include/fan/FanLabeler.h

@@ -0,0 +1,14 @@
+#ifndef FANLABELER_H_
+#define FANLABELER_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Fan.h>
+
+class FanLabeler {
+public:
+  void RunFanLabelInteraction(std::vector<std::shared_ptr<Fan>> fans);
+};
+
+#endif // FANLABELER_H_

app/include/fan/HwmonFan.h

@@ -0,0 +1,56 @@
+#ifndef HWMONFAN_H_
+#define HWMONFAN_H_
+
+#include <chrono>
+#include <memory>
+
+#include <fan/Fan.h>
+#include <pwm/PWMControl.h>
+#include <sensor/Sensor.h>
+
+class HwmonFan : public Fan {
+public:
+  HwmonFan(std::shared_ptr<PWMControl> pwmControl,
+           std::shared_ptr<Sensor> rpmSensor);
+
+  void PWM(int percent) override;
+  int RPM() override;
+
+  void Label(std::string label) override;
+
+  void MinPWM(int value) override;
+  int MinPWM() override;
+
+  void StartPWM(int value) override;
+  int StartPWM() override;
+
+  void ZeroFanModeSupported(bool value) override;
+  bool ZeroFanModeSupported() override;
+
+  void FindPWMLimits() override;
+  void AdjustPWMLimits() override;
+
+  void EnforceSetValue() override;
+
+  json toJson() const override;
+
+  const std::string toString() const override;
+
+private:
+  bool InhibitStopPeriodExpired();
+  void SetPower(int percent);
+
+  std::shared_ptr<PWMControl> mPWMControl;
+  std::shared_ptr<Sensor> mRpmSensor;
+  std::string mLabel;
+
+  int mMinPWM = 0;
+  int mStartPWM = 0;
+  bool mZeroFanModeSupported = false;
+  std::chrono::time_point<std::chrono::steady_clock> mLastAdjustmentTime;
+  std::chrono::time_point<std::chrono::steady_clock> mLastStartTime;
+  int mSetValue = 0;
+  bool mWasStopped = false;
+};
+
+#endif // HWMONFAN_H_

app/include/nvidia.h

@@ -1,11 +0,0 @@
-#ifndef NVIDIA_H_
-#define NVIDIA_H_
-
-class Nvidia {
-public:
-  Nvidia();
-  ~Nvidia();
-  double get_gpu_temperature();
-};
-
-#endif // NVIDIA_H_

app/include/pwm.h

@@ -1,30 +0,0 @@
-#ifndef PWM_H_
-#define PWM_H_
-
-#include <string>
-#include <unordered_map>
-
-typedef struct {
-  std::string control;
-  std::string enable;
-  std::string mode;
-} PWM_CONTROL;
-
-typedef enum { FULL_SPEED = 0, MANUAL_CONTROL, AUTOMATIC } PWM_ENABLE;
-typedef enum { DC = 0, PWM } PWM_MODE;
-
-class PWM {
-public:
-  PWM();
-  void dumpValues();
-
-  void setEnable(PWM_CONTROL control, PWM_ENABLE value);
-  void setMode(PWM_CONTROL control, PWM_MODE mode);
-  void setValuePwm(PWM_CONTROL control, int pwm);
-  void setValuePercent(PWM_CONTROL control, int percentage);
-
-private:
-  std::unordered_map<std::string, PWM_CONTROL> mPwmControls;
-};
-
-#endif // PWM_H_

app/include/pwm/PWMControl.h

@@ -0,0 +1,39 @@
+#ifndef PWMCONTROL_H_
+#define PWMCONTROL_H_
+
+#include <string>
+
+#include <Printable.h>
+#include <Serializable.h>
+
+enum class PWM_CONTROL_PROPERTY { CONTROL, ENABLE, MODE };
+enum class PWM_ENABLE { FULL_SPEED = 0, MANUAL_CONTROL };
+enum class PWM_MODE { DC = 0, PWM };
+
+class PWMControl : public Printable, public Serializable {
+public:
+  PWMControl(std::string controlPath, int deviceIndex);
+  ~PWMControl();
+
+  void SetPower(int percent);
+  int CurrentPWM();
+
+  void EnableManualControl();
+  void Reset();
+
+  const std::string toString() const override;
+
+  json toJson() const override;
+
+private:
+  std::string mConfigPath;
+  std::string mControlPath;
+  std::string mEnablePath;
+  std::string mModePath;
+  int mDeviceIndex;
+
+  std::string mInitialEnable;
+  std::string mInitialMode;
+};
+
+#endif // PWMCONTROL_H_

app/include/pwm/PWMControlFacade.h

@@ -0,0 +1,16 @@
+#ifndef PWMCONTROLFACADE_H_
+#define PWMCONTROLFACADE_H_
+
+#include <memory>
+#include <vector>
+
+#include <pwm/PWMControl.h>
+
+#define HWMON_BASE_PATH "/sys/class/hwmon"
+
+class PWMControlFacade {
+public:
+  std::vector<std::shared_ptr<PWMControl>> PWMControls();
+};
+
+#endif // PWMCONTROLFACADE_H_

app/include/sensor/GPUSensorsFacade.h

@@ -0,0 +1,14 @@
+#ifndef GPUSENSORSFACADE_H_
+#define GPUSENSORSFACADE_H_
+
+#include <memory>
+#include <vector>
+
+#include <sensor/Sensor.h>
+
+class GPUSensorsFacade {
+public:
+  std::vector<std::shared_ptr<Sensor>> TemperatureSensors();
+};
+
+#endif // GPUSENSORSFACADE_H_

app/include/sensor/LMSensor.h

@@ -0,0 +1,24 @@
+#ifndef HWMONSENSOR_H_
+#define HWMONSENSOR_H_
+
+#include <sensors/sensors.h>
+
+#include <sensor/Sensor.h>
+
+class LMSensor : public Sensor {
+public:
+  LMSensor(const sensors_chip_name *chipName, const sensors_feature *feature,
+           const sensors_subfeature *subfeature);
+
+  int value() override;
+  const std::string toString() const override;
+
+  json toJson() const override;
+
+private:
+  const sensors_chip_name *mChipName;
+  const sensors_feature *mFeature;
+  const sensors_subfeature *mSubFeature;
+};
+
+#endif // HWMONSENSOR_H_

app/include/sensor/LMSensorsFacade.h

@@ -0,0 +1,31 @@
+#ifndef LMSENSORSFACADE_H_
+#define LMSENSORSFACADE_H_
+
+#include <memory>
+#include <vector>
+
+#include <sensors/sensors.h>
+
+#include <sensor/Sensor.h>
+
+class LMSensorsFacade {
+public:
+  LMSensorsFacade();
+  ~LMSensorsFacade();
+
+  std::vector<std::shared_ptr<Sensor>> TemperatureSensors();
+  std::vector<std::shared_ptr<Sensor>> RPMSensors();
+
+  void ReloadSensors();
+
+private:
+  template <sensors_subfeature_type T>
+  std::vector<std::shared_ptr<Sensor>> Sensors();
+  void InitSensors();
+  void CleanupSensors();
+
+private:
+  FILE *mConfigFile;
+};
+
+#endif // LMSENSORSFACADE_H_

app/include/sensor/NvidiaSensor.h

@@ -0,0 +1,18 @@
+#ifndef NVIDIASENSOR_H_
+#define NVIDIASENSOR_H_
+
+#include <sensor/Sensor.h>
+
+class NvidiaSensor : public Sensor {
+public:
+  NvidiaSensor();
+  ~NvidiaSensor();
+
+  int value() override;
+
+  const std::string toString() const override;
+
+  json toJson() const override;
+};
+
+#endif // NVIDIASENSOR_H_

app/include/sensor/Sensor.h

@@ -0,0 +1,19 @@
+#ifndef SENSOR_H_
+#define SENSOR_H_
+
+#include <Printable.h>
+#include <Serializable.h>
+
+class Sensor : public Printable, public Serializable {
+public:
+  // Read the current value
+  virtual int value() = 0;
+
+  virtual int max() const;
+  virtual void max(int value);
+
+protected:
+  int mMax = 0;
+};
+
+#endif // SENSOR_H_

app/include/sensor/SensorManager.h

@@ -0,0 +1,22 @@
+#ifndef SENSORMANAGER_H_
+#define SENSORMANAGER_H_
+
+#include <memory>
+#include <sensor/GPUSensorsFacade.h>
+#include <sensor/LMSensorsFacade.h>
+
+class SensorManager {
+public:
+  SensorManager();
+
+  std::vector<std::shared_ptr<Sensor>> TemperatureSensors();
+  std::vector<std::shared_ptr<Sensor>> RPMSensors();
+
+  void ReloadSensors();
+
+private:
+  std::unique_ptr<LMSensorsFacade> mLMSensorsFacade;
+  std::unique_ptr<GPUSensorsFacade> mGPUSensorsFacade;
+};
+
+#endif // SENSORMANAGER_H_

app/meson.build

@@ -0,0 +1,37 @@
+project('fantasize', 'cpp', version : '0.3.0', default_options : 'cpp_std=c++20')
+
+src = [
+  'src/main.cxx',
+  'src/sensor/LMSensorsFacade.cxx',
+  'src/sensor/Sensor.cxx',
+  'src/sensor/LMSensor.cxx',
+  'src/pwm/PWMControl.cxx',
+  'src/pwm/PWMControlFacade.cxx',
+  'src/fan/HwmonFan.cxx',
+  'src/fan/FanCurve.cxx',
+  'src/fan/FanLabeler.cxx',
+  'src/fan/Aggregators.cxx',
+  'src/FanGenerator.cxx',
+  'src/Serializer.cxx',
+  'src/sensor/SensorManager.cxx',
+  'src/Controller.cxx',
+  'src/Settings.cxx',
+  'src/App.cxx'
+]
+
+deps = [
+  dependency('nlohmann_json'),
+  dependency('boost', modules : ['program_options', 'log', 'log_setup', 'date_time', 'thread']),
+  dependency('tbb'),
+  meson.get_compiler('cpp').find_library('sensors')
+]
+
+inc = include_directories('include')
+
+exe = executable('fantasize',
+  src,
+  dependencies: deps,
+  install: true,
+  include_directories: inc)
+
+install_data('unit/fantasize.service', install_dir : '/usr/lib/systemd/system')

app/src/App.cxx

@@ -0,0 +1,62 @@
+#include "fan/Fan.h"
+#include "fan/FanCurve.h"
+#include <chrono>
+#include <execution>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <App.h>
+#include <memory>
+#include <thread>
+
+using namespace std;
+
+void App::Init() {
+  BOOST_LOG_FUNCTION();
+
+  bool everythingFound = false;
+
+  mFans = mSerializer.DeserializeFans(mSensorManager.RPMSensors());
+  auto fanCurves = mSerializer.DeserializeFanCurves(
+      mSensorManager.TemperatureSensors(), mFans, everythingFound);
+
+  while (!everythingFound) {
+    BOOST_LOG_TRIVIAL(info) << "Couldn't find every sensor. Retrying in 5s...";
+    this_thread::sleep_for(chrono::seconds(5));
+
+    mSensorManager.ReloadSensors();
+    mFans = mSerializer.DeserializeFans(mSensorManager.RPMSensors());
+    fanCurves = mSerializer.DeserializeFanCurves(
+        mSensorManager.TemperatureSensors(), mFans, everythingFound);
+  }
+
+  mSettings = mSerializer.DeserializeSettings();
+
+  mController = make_unique<Controller>(mSettings, fanCurves);
+}
+
+void App::InitialSetup() {
+  auto fans = mFanGenerator.FindFans(mSensorManager.RPMSensors(),
+                                     mPWMControlFacade.PWMControls());
+
+  std::for_each(std::execution::par, std::begin(fans), std::end(fans),
+                [](auto &&fan) { fan->FindPWMLimits(); });
+
+  mFanLabeler.RunFanLabelInteraction(fans);
+
+  mSerializer.SerializeFans(fans);
+
+  mFans = fans;
+}
+
+void App::NormalOperation() {
+  if (mController)
+    mController->StartFanControlLoop();
+}
+
+void App::Shutdown() {
+  mSerializer.SerializeFans(mFans);
+  mFans.clear();
+  mController.reset();
+}

app/src/ConfigManager.cxx

@@ -0,0 +1,29 @@
+#include <filesystem>
+#include <fstream>
+
+#include <ConfigManager.h>
+#include <memory>
+
+using namespace std;
+namespace fs = std::filesystem;
+
+ConfigManager::ConfigManager() {
+  if (fs::exists(CONFIG_FILE)) {
+    ifstream f(CONFIG_FILE);
+    mConfig = json::parse(f);
+  }
+}
+
+void ConfigManager::SaveFans(vector<shared_ptr<Fan>> fans) {
+  json obj;
+
+  for (auto fan : fans) {
+  }
+}
+
+ConfigManager::~ConfigManager() { WriteConfig(); }
+
+void ConfigManager::WriteConfig() {
+  ofstream f(CONFIG_FILE, ios::trunc);
+  f << mConfig.dump(2) << endl;
+}

app/src/Controller.cxx

@@ -0,0 +1,37 @@
+#include <chrono>
+#include <memory>
+
+#include <Controller.h>
+#include <fan/FanCurve.h>
+
+using namespace std;
+
+Controller::Controller(shared_ptr<Settings> settings,
+                       vector<shared_ptr<FanCurve>> curves)
+    : mTimeout((1 / settings->Frequency()) * 1000), mFanCurves(curves),
+      mRun(false) {}
+
+Controller::~Controller() { StopFanControlLoop(); }
+
+void Controller::StartFanControlLoop() {
+  mRun = true;
+  Loop();
+  // mWorker = make_unique<thread>(&Controller::Loop, this);
+}
+
+void Controller::StopFanControlLoop() {
+  mRun = false;
+  // if (mWorker->joinable())
+  //   mWorker->join();
+  // mWorker.reset();
+}
+
+void Controller::Loop() {
+  while (mRun) {
+    for (auto c : mFanCurves) {
+      c->DoFanControl();
+    }
+
+    this_thread::sleep_for(chrono::milliseconds(mTimeout));
+  }
+}

app/src/FanGenerator.cxx

@@ -0,0 +1,70 @@
+#include <chrono>
+#include <iostream>
+#include <map>
+#include <memory>
+#include <thread>
+
+#include <FanGenerator.h>
+#include <fan/HwmonFan.h>
+#include <pwm/PWMControl.h>
+
+#define SETTLE_TIMEOUT 30
+
+using namespace std;
+
+vector<shared_ptr<Fan>>
+FanGenerator::FindFans(vector<shared_ptr<Sensor>> rpmSensors,
+                       vector<shared_ptr<PWMControl>> pwmControls) {
+  print("RPM Sensors", rpmSensors);
+  print("PWM controllers", pwmControls);
+  vector<shared_ptr<Fan>> mapping;
+
+  cout << "Setting all fans to maximum speed" << endl;
+  for (auto c : pwmControls) {
+    c->EnableManualControl();
+    c->SetPower(100);
+  }
+
+  // Wait for fans to settle
+  cout << "Waiting for fans to settle" << endl;
+  this_thread::sleep_for(chrono::seconds(SETTLE_TIMEOUT));
+
+  // Record values of all RPM sensors
+  for (auto s : rpmSensors) {
+    int value = s->value();
+    s->max(value);
+
+    cout << s->toString() << " max value: " << s->max() << endl;
+  }
+
+  // Set each fan to 50% and check if a sensor matches
+  for (auto c : pwmControls) {
+    cout << "Setting " << c->toString()
+         << " to 50% and wait for it to settle..." << endl;
+    c->SetPower(50);
+
+    this_thread::sleep_for(chrono::seconds(SETTLE_TIMEOUT));
+
+    for (auto s : rpmSensors) {
+      if (s->value() < s->max() * 0.7) {
+        cout << "Found matching sensor " << s->toString() << endl;
+        mapping.push_back(make_shared<HwmonFan>(c, s));
+      }
+    }
+
+    cout << "Setting fan back to 100%" << endl;
+    c->SetPower(100);
+  }
+
+  return mapping;
+}
+
+template <class Printable>
+void FanGenerator::print(string listLabel, vector<shared_ptr<Printable>> list) {
+  cout << listLabel << ": " << endl;
+
+  for (auto i : list) {
+    cout << i->toString() << endl;
+  }
+  cout << "\n";
+}

app/src/Serializer.cxx

@@ -0,0 +1,174 @@
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <memory>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <Serializer.h>
+#include <fan/HwmonFan.h>
+#include <pwm/PWMControl.h>
+#include <sensor/LMSensor.h>
+#include <string>
+
+using namespace std;
+namespace fs = filesystem;
+
+Serializer::Serializer() {
+  if (!fs::exists(SERIALIZATION_DIR)) {
+    fs::create_directory(SERIALIZATION_DIR);
+  }
+}
+
+void Serializer::SerializeFans(vector<shared_ptr<Fan>> fans) {
+  json obj;
+
+  for (auto f : fans) {
+    obj["fans"].push_back(f->toJson());
+  }
+
+  WriteJson(obj);
+}
+
+vector<shared_ptr<Fan>>
+Serializer::DeserializeFans(vector<shared_ptr<Sensor>> availableSensors) {
+  BOOST_LOG_FUNCTION();
+
+  vector<shared_ptr<Fan>> fans;
+
+  // Create a map for the sensors first, then searching becomes cheaper
+  map<string, shared_ptr<Sensor>> sensorMap;
+  for (auto s : availableSensors) {
+    sensorMap[s->toString()] = s;
+  }
+
+  auto data = ReadJson();
+  try {
+    for (auto &el : data["fans"].items()) {
+      auto pwmControl = make_shared<PWMControl>(el.value()["PWMControl"]["Path"], el.value()["PWMControl"]["Index"]);
+      auto rpmSensor = sensorMap[el.value()["LMSensor"]];
+
+      int minPWM = el.value()["MinPWM"];
+      int startPWM = el.value()["StartPWM"];
+      string label = el.value()["Label"];
+      bool zeroFan = el.value()["ZeroFan"];
+
+      auto fan = make_shared<HwmonFan>(pwmControl, rpmSensor);
+      fan->MinPWM(minPWM);
+      fan->StartPWM(startPWM);
+      fan->Label(label);
+      fan->ZeroFanModeSupported(zeroFan);
+
+      fans.push_back(fan);
+    }
+  } catch (const std::exception &e) {
+    std::cout << "Deserialization error! Message: " << e.what() << std::endl;
+  }
+
+  BOOST_LOG_TRIVIAL(trace) << "### Available Fans";
+  for (auto f : fans) {
+    BOOST_LOG_TRIVIAL(trace) << f->toString();
+  }
+
+  return fans;
+}
+
+void Serializer::WriteJson(json o) {
+  json obj;
+
+  if (fs::exists(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME)) {
+    obj = ReadJson();
+  }
+
+  for (auto &[key, value] : o.items()) {
+    obj[key] = value;
+  }
+
+  ofstream ostrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME, ios::trunc);
+  ostrm << obj.dump(2) << "\n";
+}
+
+json Serializer::ReadJson() {
+  ifstream istrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME);
+  return json::parse(istrm);
+}
+
+vector<shared_ptr<FanCurve>> Serializer::DeserializeFanCurves(
+    std::vector<std::shared_ptr<Sensor>> availableSensors,
+    std::vector<std::shared_ptr<Fan>> availableFans, bool &everythingFound) {
+  BOOST_LOG_FUNCTION();
+
+  everythingFound = true;
+  auto data = ReadJson();
+
+  map<string, shared_ptr<Sensor>> sensorMap;
+  for (auto s : availableSensors) {
+    sensorMap[s->toString()] = s;
+  }
+
+  map<string, shared_ptr<Fan>> fanMap;
+  for (auto f : availableFans) {
+    fanMap[f->toString()] = f;
+  }
+
+  vector<shared_ptr<FanCurve>> curves;
+
+  for (auto &el : data["fancurves"].items()) {
+    vector<FanStep> steps;
+    vector<shared_ptr<Sensor>> sensors;
+    vector<shared_ptr<Fan>> fans;
+
+    for (auto &step : el.value()["FanSteps"].items()) {
+      steps.push_back(FanStep{step.value()[0], step.value()[1]});
+    }
+
+    for (auto &sensor : el.value()["Sensors"].items()) {
+      if (sensorMap.contains(sensor.value()))
+        sensors.push_back(sensorMap[sensor.value()]);
+      else {
+        BOOST_LOG_TRIVIAL(warning)
+            << "Sensor " << sensor.value() << " not found!";
+        everythingFound = false;
+      }
+    }
+
+    for (auto &fan : el.value()["Fans"].items()) {
+      if (fanMap.contains(fan.value()))
+        fans.push_back(fanMap[fan.value()]);
+    }
+
+    std::unique_ptr<Aggregator> aggregator =
+        aggregatorFromString(el.value()["AggregateFunction"]);
+
+    int hysteresis = el.value()["Hysteresis"];
+
+    curves.push_back(make_shared<FanCurve>(steps, sensors, fans,
+                                           std::move(aggregator), hysteresis));
+  }
+
+  return curves;
+}
+
+std::unique_ptr<Aggregator>
+Serializer::aggregatorFromString(std::string str) const {
+  if (str == "max")
+    return std::make_unique<MaxAggregator>();
+  else
+    return std::make_unique<AverageAggregator>();
+}
+
+shared_ptr<Settings> Serializer::DeserializeSettings() {
+  int frequency = FREQUENCY_DEFAULT;
+
+  auto data = ReadJson();
+
+  if (data.contains("settings")) {
+    auto items = data["settings"];
+
+    if (items.contains("frequency"))
+      frequency = items["frequency"];
+  }
+
+  return make_shared<Settings>(frequency);
+}

app/src/Settings.cxx

@@ -0,0 +1,17 @@
+#include <iostream>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <Settings.h>
+
+Settings::Settings(int frequency) : mFrequency(frequency) { LogSettings(); }
+
+int Settings::Frequency() const { return mFrequency; }
+
+void Settings::LogSettings() {
+  BOOST_LOG_FUNCTION();
+
+  BOOST_LOG_TRIVIAL(info) << "### Settings";
+  BOOST_LOG_TRIVIAL(info) << "Frequency: " << mFrequency << "Hz";
+}

app/src/fan/Aggregators.cxx

@@ -0,0 +1,39 @@
+#include <climits>
+#include <fan/Aggregators.h>
+
+int
+AverageAggregator::aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const
+{
+  int sum = 0;
+
+  for (auto sensor : sensors) {
+    sum += sensor->value();
+  }
+
+  return sum / sensors.size();
+}
+
+const std::string
+AverageAggregator::toString() const
+{
+  return "Average";
+}
+
+int
+MaxAggregator::aggregate(std::vector<std::shared_ptr<Sensor>> sensors) const
+{
+  int max = INT_MIN;
+
+  for (auto sensor : sensors) {
+    if (sensor->value() > max)
+      max = sensor->value();
+  }
+
+  return max;
+}
+
+const std::string
+MaxAggregator::toString() const
+{
+  return "Max";
+}

app/src/fan/FanCurve.cxx

@@ -0,0 +1,128 @@
+#include <iostream>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <fan/FanCurve.h>
+#include <memory>
+
+using namespace std;
+
+FanCurve::FanCurve(std::vector<FanStep> steps,
+                   std::vector<std::shared_ptr<Sensor>> sensors,
+                   std::vector<std::shared_ptr<Fan>> fans,
+                   std::unique_ptr<Aggregator> aggregator, int hysteresis)
+    : mSteps(steps), mTempSensors(sensors), mFans(fans),
+      mAggregator(std::move(aggregator)), mHystersis(hysteresis),
+      mLastTemperature(INT_MIN) {
+  PrintInfo();
+}
+
+void FanCurve::DoFanControl() {
+  BOOST_LOG_FUNCTION()
+
+  BOOST_LOG_TRIVIAL(trace) << "## Fans in curve";
+  for (auto f : mFans)
+    BOOST_LOG_TRIVIAL(trace) << f->toString();
+
+  BOOST_LOG_TRIVIAL(trace) << "## Sensors in curve";
+  for (auto s : mTempSensors)
+    BOOST_LOG_TRIVIAL(trace) << s->toString();
+
+  int temp = mAggregator->aggregate(mTempSensors);
+
+  int t0 = 0, t1 = 0, p0 = 0, p1 = 0;
+  int targetFanPower;
+
+  if (temp <= mSteps[0].Temp) {
+    targetFanPower = mSteps[0].Percent;
+  } else if (temp > mSteps[mSteps.size() - 1].Temp) {
+    targetFanPower = mSteps[mSteps.size() - 1].Percent;
+  } else {
+    for (int i = 0; i < (int)mSteps.size(); i++) {
+      if (temp > mSteps[i].Temp) {
+        t0 = mSteps[i].Temp;
+        p0 = mSteps[i].Percent;
+
+        t1 = mSteps[i + 1].Temp;
+        p1 = mSteps[i + 1].Percent;
+      }
+    }
+
+    targetFanPower = p0 + ((p1 - p0) / (t1 - t0)) * (temp - t0);
+  }
+
+  BOOST_LOG_TRIVIAL(trace) << "Current temp: " << temp;
+  BOOST_LOG_TRIVIAL(trace) << "Last temp: " << mLastTemperature;
+
+  BOOST_LOG_TRIVIAL(trace) << "# Hysteresis check";
+  if (ExceedsHysteresis(temp)) {
+    BOOST_LOG_TRIVIAL(trace) << "passed";
+    for (auto f : mFans) {
+      ApplyFanPower(f, targetFanPower);
+
+      mLastTemperature = temp;
+    }
+  } else {
+    for (auto f : mFans)
+      f->EnforceSetValue();
+
+    BOOST_LOG_TRIVIAL(trace) << "not passed";
+  }
+}
+
+void FanCurve::PrintInfo() {
+  BOOST_LOG_FUNCTION()
+
+  BOOST_LOG_TRIVIAL(info) << "### Fan curve:";
+
+  stringstream sStream;
+  sStream << "Steps: ";
+  for (auto s : mSteps) {
+    sStream << "[ " << s.Temp << "C, " << s.Percent << "% ] ";
+  }
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+
+  sStream.str(string());
+
+  sStream << "Sensors: ";
+  for (auto s : mTempSensors) {
+    sStream << s->toString() << ", ";
+  }
+
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+
+  sStream.str(string());
+
+  sStream << "Fans: ";
+  for (auto s : mFans) {
+    sStream << s->toString() << ", ";
+  }
+
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+
+  sStream.str(string());
+
+  sStream << "Aggregate function: " << mAggregator->toString();
+
+  BOOST_LOG_TRIVIAL(info) << sStream.str();
+}
+
+bool FanCurve::ExceedsHysteresis(int temperature) {
+  int lowThreshold = mLastTemperature - mHystersis;
+  int highThreshold = mLastTemperature + mHystersis;
+
+  return temperature <= lowThreshold || temperature >= highThreshold;
+}
+
+void FanCurve::ApplyFanPower(std::shared_ptr<Fan> fan, int targetFanPower) {
+  BOOST_LOG_FUNCTION();
+
+  if (!fan->ZeroFanModeSupported() && fan->RPM() <= 0) {
+    BOOST_LOG_TRIVIAL(warning) << "Fan " << fan->toString() << " stopped completely!";
+    fan->PWM(fan->StartPWM());
+    fan->AdjustPWMLimits();
+  } else {
+    fan->PWM(targetFanPower);
+  }
+}

app/src/fan/FanLabeler.cxx

@@ -0,0 +1,41 @@
+#include <iostream>
+#include <string>
+
+#include <fan/FanLabeler.h>
+
+using namespace std;
+
+void FanLabeler::RunFanLabelInteraction(
+    std::vector<std::shared_ptr<Fan>> fans) {
+  cout << "Setting all fans to their minimum value" << endl;
+
+  for (auto f : fans) {
+    f->PWM(0);
+  }
+
+  cout << endl;
+
+  for (auto f : fans) {
+    cout << "Setting fan " << f->toString() << " to max power" << endl;
+
+    f->PWM(100);
+
+    cout << "Look inside your PC and check which fan is\n"
+            "spinning fastest and enter a name for it.\n"
+            "Just press enter to skip."
+         << endl;
+
+    std::string name;
+    getline(cin, name);
+
+    if (!name.empty()) {
+      cout << "Setting " << name << " as label for this fan." << endl;
+      f->Label(name);
+    }
+
+    cout << "Resetting fan to lowest value\n\n" << endl;
+    f->PWM(0);
+  }
+
+  cout << "Done!\n" << endl;
+}

app/src/fan/HwmonFan.cxx

@@ -0,0 +1,148 @@
+#include <chrono>
+#include <iostream>
+#include <ostream>
+#include <thread>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <fan/HwmonFan.h>
+#include <pwm/PWMControl.h>
+
+#define TIMEOUT 10
+#define INHIBIT_STOP_PERIOD 120
+#define STEP 2
+
+using namespace std;
+
+HwmonFan::HwmonFan(std::shared_ptr<PWMControl> pwmControl,
+                   std::shared_ptr<Sensor> rpmSensor)
+    : mPWMControl(pwmControl), mRpmSensor(rpmSensor) {
+  mPWMControl->EnableManualControl();
+}
+
+void HwmonFan::PWM(int percent) {
+  if (percent < mMinPWM) {
+    if (mZeroFanModeSupported && InhibitStopPeriodExpired()) {
+      SetPower(percent);
+      mWasStopped = true;
+    } else {
+      SetPower(mMinPWM);
+    }
+  } else {
+    if (mWasStopped) {
+      mWasStopped = false;
+      mLastStartTime = chrono::steady_clock::now();
+      SetPower(mStartPWM);
+    } else {
+      SetPower(percent);
+    }
+  }
+}
+
+bool HwmonFan::InhibitStopPeriodExpired() {
+  BOOST_LOG_FUNCTION();
+
+  auto result = chrono::steady_clock::now() - mLastStartTime >
+                chrono::duration(chrono::seconds(INHIBIT_STOP_PERIOD));
+
+  BOOST_LOG_TRIVIAL(trace) << "Inhibit-Stop period expired:"
+                           << (result ? "true" : "false");
+
+  return result;
+}
+
+void HwmonFan::SetPower(int percent) {
+  mPWMControl->SetPower(percent);
+  mSetValue = percent;
+}
+
+int HwmonFan::RPM() { return mRpmSensor->value(); }
+
+void HwmonFan::Label(std::string label) { mLabel = label; }
+
+void HwmonFan::MinPWM(int value) { mMinPWM = value; }
+
+int HwmonFan::MinPWM() { return mMinPWM; }
+
+void HwmonFan::StartPWM(int value) { mStartPWM = value; }
+
+int HwmonFan::StartPWM() { return mStartPWM; }
+
+void HwmonFan::ZeroFanModeSupported(bool value) {
+  mZeroFanModeSupported = value;
+}
+
+bool HwmonFan::ZeroFanModeSupported() { return mZeroFanModeSupported; }
+
+void HwmonFan::FindPWMLimits() {
+  cout << "Looking for minimal PWM" << endl;
+  int minPWM = 0;
+  mMinPWM = 0;
+  mStartPWM = 0;
+
+  for (int curPWM = 100; curPWM > 0; curPWM -= STEP) {
+    PWM(curPWM);
+    this_thread::sleep_for(chrono::seconds(TIMEOUT));
+
+    if (RPM() <= 0) {
+      minPWM = curPWM + STEP;
+      break;
+    }
+  }
+
+  cout << "Setting minimal PWM: " << minPWM << endl;
+  mMinPWM = minPWM;
+
+  if (minPWM == 0) {
+    cout << "Fan never stopped. ";
+  } else {
+    int startPWM = 0;
+
+    cout << "Looking for start PWM!" << endl;
+    for (int curPWM = minPWM - STEP; curPWM < 100; curPWM += STEP) {
+      PWM(curPWM);
+      this_thread::sleep_for(chrono::seconds(TIMEOUT));
+
+      if (RPM() > 0) {
+        cout << "Setting start PWM: " << startPWM << endl;
+        startPWM = curPWM;
+        break;
+      }
+    }
+
+    mStartPWM = startPWM;
+  }
+}
+
+void HwmonFan::AdjustPWMLimits() {
+  BOOST_LOG_FUNCTION()
+
+  chrono::time_point now = chrono::steady_clock::now();
+
+  if ((now - mLastAdjustmentTime) >
+      chrono::duration(chrono::seconds(TIMEOUT))) {
+    BOOST_LOG_TRIVIAL(info) << "Increasing minimal fan speed";
+
+    mLastAdjustmentTime = now;
+    mMinPWM += 2;
+  }
+}
+
+void HwmonFan::EnforceSetValue() { mPWMControl->SetPower(mSetValue); }
+
+json HwmonFan::toJson() const {
+  json obj;
+  obj = {mPWMControl->toJson(),   mRpmSensor->toJson(),
+         {"Label", mLabel},       {"MinPWM", mMinPWM},
+         {"StartPWM", mStartPWM}, {"ZeroFan", mZeroFanModeSupported}};
+  return obj;
+}
+
+const string HwmonFan::toString() const {
+  if (!mLabel.empty()) {
+    return mLabel;
+  } else {
+    return mPWMControl->toString();
+  }
+}

app/src/main.cxx

@@ -1,54 +1,97 @@
-#include <nvidia.h>
+#include <csignal>
-#include <pwm.h>
-#include <sensors/sensors.h>
-
 #include <iostream>
 
-int main() {
+#include <boost/date_time/posix_time/posix_time_types.hpp>
-  auto config = std::fopen("/etc/conf.d/sensors", "r");
+#include <boost/log/attributes/named_scope.hpp>
-  if (sensors_init(config) != 0) {
+#include <boost/log/core.hpp>
-    std::cout << "Fuck" << std::endl;
+#include <boost/log/expressions.hpp>
-    return 1;
+#include <boost/log/expressions/formatters/named_scope.hpp>
+#include <boost/log/expressions/message.hpp>
+#include <boost/log/support/date_time.hpp>
+#include <boost/log/trivial.hpp>
+#include <boost/log/utility/setup.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/log/utility/setup/console.hpp>
+#include <boost/program_options.hpp>
+#include <boost/program_options/options_description.hpp>
+#include <boost/program_options/parsers.hpp>
+#include <boost/program_options/value_semantic.hpp>
+#include <boost/program_options/variables_map.hpp>
+
+#include <App.h>
+
+#define PROJECT_VERSION "v0.3.0"
+
+namespace po = boost::program_options;
+namespace logging = boost::log;
+
+App app;
+
+void signal_handler(int s) { app.Shutdown(); }
+
+void InitLogging(bool verbose) {
+  logging::add_console_log(
+      std::clog,
+      logging::keywords::format =
+          (logging::expressions::stream
+           << "["
+           << logging::expressions::format_date_time<boost::posix_time::ptime>(
+                  "TimeStamp", "%Y-%m-%d %H:%M:%S")
+           << "]["
+           << logging::expressions::format_named_scope(
+                  "Scope", logging::keywords::format = "%c")
+           << "]"
+           << "[" << logging::trivial::severity << "] "
+           << logging::expressions::smessage));
+
+  logging::add_common_attributes();
+  logging::core::get()->add_global_attribute(
+      "Scope", logging::attributes::named_scope());
+
+  BOOST_LOG_FUNCTION();
+
+  if (!verbose) {
+    logging::core::get()->set_filter(logging::trivial::severity >=
+                                     logging::trivial::info);
+  } else {
+    BOOST_LOG_TRIVIAL(info) << "Verbose logging enabled";
   }
+}
 
-  int c = 0;
+int main(int argc, char **argv) {
-  for (const sensors_chip_name *i;
+  BOOST_LOG_FUNCTION()
-       (i = sensors_get_detected_chips(0, &c)) != NULL;) {
+  BOOST_LOG_TRIVIAL(info) << "Version: " << PROJECT_VERSION;
-    std::cout << i->prefix << std::endl;
 
-    int d = 0;
+  signal(SIGINT, signal_handler);
-    for (const sensors_feature *j; (j = sensors_get_features(i, &d)) != NULL;) {
+  signal(SIGTERM, signal_handler);
-      const sensors_subfeature *temp_feature =
-          sensors_get_subfeature(i, j, SENSORS_SUBFEATURE_TEMP_INPUT);
-      if (temp_feature) {
-        std::cout << sensors_get_label(i, j);
 
-        double value;
+  po::options_description desc("Allowed options");
-        if (sensors_get_value(i, temp_feature->number, &value) == 0)
+  desc.add_options()("help,h", "produce help message")(
-          std::cout << ": " << value << " C" << std::endl;
+      "setup,s", po::bool_switch(),
-      }
+      "run initial setup")("verbose,v", po::bool_switch(), "print debug info");
 
-      const sensors_subfeature *fan_feature =
+  po::variables_map vm;
-          sensors_get_subfeature(i, j, SENSORS_SUBFEATURE_FAN_INPUT);
+  po::store(po::parse_command_line(argc, argv, desc), vm);
+  po::notify(vm);
 
-      if (fan_feature) {
+  try {
-        std::cout << sensors_get_label(i, j);
+    InitLogging(vm["verbose"].as<bool>());
 
-        double value;
+    if (vm.count("help")) {
-        if (sensors_get_value(i, fan_feature->number, &value) == 0)
+      std::cout << desc << "\n";
-          std::cout << ": " << value << " RPM" << std::endl;
+      return 0;
-      }
     }
 
-    std::cout << std::endl;
+    if (vm.count("setup") && vm["setup"].as<bool>()) {
+      app.InitialSetup();
+    } else {
+      app.Init();
+      app.NormalOperation();
+    }
+  } catch (const std::exception &e) {
+    std::cout << "An exception was caught: " << e.what() << std::endl;
   }
 
-  Nvidia nv;
+  app.Shutdown();
-  auto temp = nv.get_gpu_temperature();
-  std::cout << "\nGPU Temp: " << temp << std::endl;
-
-  PWM pwm;
-  pwm.dumpValues();
-
   return 0;
 }

app/src/nvidia.cxx

@@ -1,16 +0,0 @@
-#include <include/nvml.h>
-#include <nvidia.h>
-
-Nvidia::Nvidia() { nvmlInit_v2(); }
-Nvidia::~Nvidia() { nvmlShutdown(); }
-
-double Nvidia::get_gpu_temperature() {
-  nvmlDevice_t device;
-
-  nvmlDeviceGetHandleByIndex_v2(0, &device);
-
-  unsigned int temp;
-  nvmlDeviceGetTemperature(device, NVML_TEMPERATURE_GPU, &temp);
-
-  return static_cast<double>(temp);
-}

app/src/pwm.cxx

@@ -1,56 +0,0 @@
-#include <pwm.h>
-
-#include <filesystem>
-#include <iostream>
-#include <regex>
-
-namespace fs = std::filesystem;
-using namespace std;
-
-#define HWMON_BASE_PATH "/sys/class/hwmon"
-
-#define PWM_POSTFIX_ENABLE "_enable"
-#define PWM_POSTFIX_MODE "_mode"
-
-PWM::PWM() {
-  const regex re_ctrl_enable("pwm[0-9]_enable");
-  const regex re_ctrl_mode("pwm[0-9]_mode");
-  const regex re_ctrl("pwm[0-9]");
-
-  if (!fs::exists(HWMON_BASE_PATH)) {
-    cerr << HWMON_BASE_PATH << " doesn't exist" << endl;
-  } else {
-    for (const fs::directory_entry &hwmon_device :
-         fs::directory_iterator{HWMON_BASE_PATH}) {
-      cout << hwmon_device << endl;
-
-      for (const fs::directory_entry &control :
-           fs::directory_iterator{hwmon_device}) {
-        auto filename = control.path().filename().string();
-
-        if (regex_match(filename, re_ctrl)) {
-          auto controlPath = control.path().string();
-
-          fs::path path_ctrl_enable(
-              string(controlPath + string(PWM_POSTFIX_ENABLE)));
-          fs::path path_ctrl_mode(
-              string(controlPath + string(PWM_POSTFIX_MODE)));
-
-          if (fs::exists(path_ctrl_enable) && fs::exists(path_ctrl_mode))
-            cout << control << endl;
-
-          mPwmControls.insert(
-              {controlPath, PWM_CONTROL{controlPath, path_ctrl_enable.string(),
-                                        path_ctrl_mode.string()}});
-        }
-      }
-    }
-  }
-}
-
-void PWM::dumpValues() {
-  for (auto control : mPwmControls) {
-    cout << control.second.control << ", " << control.second.enable << ", "
-         << control.second.mode << endl;
-  }
-}

app/src/pwm/PWMControl.cxx

@@ -0,0 +1,102 @@
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+#include <pwm/PWMControl.h>
+
+#define PWM_POSTFIX_ENABLE "_enable"
+#define PWM_POSTFIX_MODE "_mode"
+
+#define PWM_MAX_VALUE 255
+
+using namespace std;
+namespace fs = filesystem;
+
+PWMControl::PWMControl(string controlPath, int deviceIndex)
+    : mConfigPath(controlPath), mDeviceIndex(deviceIndex) {
+  auto path = fs::path{controlPath};
+
+  int fileCount =
+      distance(fs::directory_iterator(path), fs::directory_iterator{});
+  if (fileCount != 1)
+    throw runtime_error("More than one HWMON device present, unsupported");
+
+  for (auto de : fs::directory_iterator(path)) {
+    auto testPath = de.path();
+    mControlPath =
+        fs::path{de.path() / (string("pwm").append(to_string(deviceIndex)))}
+            .string();
+  }
+
+  mEnablePath = fs::path{mControlPath + PWM_POSTFIX_ENABLE}.string();
+  mModePath = fs::path{mControlPath + PWM_POSTFIX_MODE}.string();
+
+  ifstream istrm;
+
+  istrm.open(mEnablePath);
+  istrm >> mInitialEnable;
+  istrm.close();
+
+  istrm.open(mInitialMode);
+  istrm >> mInitialMode;
+  istrm.close();
+}
+
+PWMControl::~PWMControl() {
+  BOOST_LOG_FUNCTION();
+
+  BOOST_LOG_TRIVIAL(trace) << "Cleanup";
+  Reset();
+}
+
+void PWMControl::SetPower(int percent) {
+  BOOST_LOG_FUNCTION();
+
+  int pwmValue = (PWM_MAX_VALUE * percent) / 100;
+
+  if (pwmValue != CurrentPWM()) {
+    BOOST_LOG_TRIVIAL(trace) << "Updating control value of " << toString()
+                             << " to " << percent << "% (" << pwmValue << ")";
+    ofstream ostrm(mControlPath, ios::trunc);
+    ostrm << pwmValue;
+    ostrm.close();
+  }
+}
+
+int PWMControl::CurrentPWM() {
+  int value;
+  ifstream istrm;
+
+  istrm.open(mControlPath);
+  istrm >> value;
+
+  return value;
+}
+
+void PWMControl::EnableManualControl() {
+  ofstream ostrm(mEnablePath, ios::trunc);
+  ostrm << static_cast<int>(PWM_ENABLE::MANUAL_CONTROL);
+  ostrm.close();
+}
+
+void PWMControl::Reset() {
+  ofstream ostrm(mEnablePath, ios::trunc);
+
+  ostrm << mInitialEnable;
+  ostrm.close();
+
+  ostrm.open(mModePath, ios::trunc);
+  ostrm << mInitialMode;
+
+  ostrm.close();
+}
+
+const string PWMControl::toString() const { return fs::path(mControlPath); }
+
+json PWMControl::toJson() const {
+  json obj = {"PWMControl", {{"Path", mConfigPath}, {"Index", mDeviceIndex}}};
+  return obj;
+}

app/src/pwm/PWMControlFacade.cxx

@@ -0,0 +1,44 @@
+#include <filesystem>
+#include <iostream>
+#include <regex>
+#include <string>
+
+#include <pwm/PWMControlFacade.h>
+
+using namespace std;
+namespace fs = std::filesystem;
+
+vector<shared_ptr<PWMControl>> PWMControlFacade::PWMControls() {
+  vector<shared_ptr<PWMControl>> controls;
+
+  const regex re_ctrl_enable("pwm[0-9]_enable");
+  const regex re_ctrl_mode("pwm[0-9]_mode");
+  const regex re_ctrl("pwm[0-9]");
+
+  if (!fs::exists(HWMON_BASE_PATH)) {
+    cout << HWMON_BASE_PATH << " doesn't exist" << endl;
+  } else {
+    for (const fs::directory_entry &hwmon_device :
+         fs::directory_iterator{HWMON_BASE_PATH}) {
+
+      // Resolve symlink to get device path instead of hwmon path, the latter of
+      // which can change
+      fs::path actual_path =
+          fs::canonical(HWMON_BASE_PATH / fs::read_symlink(hwmon_device));
+
+      for (const fs::directory_entry &control :
+           fs::directory_iterator{actual_path}) {
+        auto filename = control.path().filename().string();
+
+        if (regex_match(filename, re_ctrl)) {
+          auto controlIndex = filename.back() - '0';
+          auto controlPath = actual_path.parent_path();
+
+          controls.push_back(make_shared<PWMControl>(controlPath, controlIndex));
+        }
+      }
+    }
+  }
+
+  return controls;
+}

app/src/sensor/GPUSensorsFacade.cxx

@@ -0,0 +1,9 @@
+#include <sensor/GPUSensorsFacade.h>
+
+#include <sensor/NvidiaSensor.h>
+
+using namespace std;
+
+vector<shared_ptr<Sensor>> GPUSensorsFacade::TemperatureSensors() {
+  return vector<shared_ptr<Sensor>>{make_shared<NvidiaSensor>()};
+}

app/src/sensor/LMSensor.cxx

@@ -0,0 +1,30 @@
+#include <iostream>
+
+#include <boost/json/kind.hpp>
+#include <sensor/LMSensor.h>
+#include <sensors/sensors.h>
+
+using namespace std;
+
+LMSensor::LMSensor(const sensors_chip_name *chipName,
+                   const sensors_feature *feature,
+                   const sensors_subfeature *subfeature)
+    : mChipName(chipName), mFeature(feature), mSubFeature(subfeature) {}
+
+int LMSensor::value() {
+  double value;
+  sensors_get_value(mChipName, mSubFeature->number, &value);
+
+  return static_cast<int>(value);
+}
+
+const string LMSensor::toString() const {
+  ostringstream os;
+  os << mChipName->prefix << "." << sensors_get_label(mChipName, mFeature);
+  return os.str();
+}
+
+json LMSensor::toJson() const {
+  json obj = {"LMSensor", toString()};
+  return obj;
+}

app/src/sensor/LMSensorsFacade.cxx

@@ -0,0 +1,61 @@
+#include <stdexcept>
+
+#include <sensors/sensors.h>
+
+#include <sensor/LMSensorsFacade.h>
+
+#include <sensor/LMSensor.h>
+#include <sensor/NvidiaSensor.h>
+
+using namespace std;
+
+#define CONFIG_FILE "/etc/conf.d/sensors"
+
+LMSensorsFacade::LMSensorsFacade() : mConfigFile(fopen(CONFIG_FILE, "r")) {
+  InitSensors();
+}
+
+LMSensorsFacade::~LMSensorsFacade() { CleanupSensors(); }
+
+std::vector<std::shared_ptr<Sensor>> LMSensorsFacade::TemperatureSensors() {
+  return Sensors<SENSORS_SUBFEATURE_TEMP_INPUT>();
+}
+
+std::vector<std::shared_ptr<Sensor>> LMSensorsFacade::RPMSensors() {
+  return Sensors<SENSORS_SUBFEATURE_FAN_INPUT>();
+}
+
+template <sensors_subfeature_type T>
+std::vector<std::shared_ptr<Sensor>> LMSensorsFacade::Sensors() {
+  std::vector<std::shared_ptr<Sensor>> sensors;
+
+  int c = 0;
+  for (const sensors_chip_name *chipName;
+       (chipName = sensors_get_detected_chips(0, &c)) != NULL;) {
+
+    int d = 0;
+    for (const sensors_feature *feature;
+         (feature = sensors_get_features(chipName, &d)) != NULL;) {
+      auto subFeature = sensors_get_subfeature(chipName, feature, T);
+      if (subFeature) {
+        sensors.push_back(
+            std::make_shared<LMSensor>(chipName, feature, subFeature));
+      }
+    }
+  }
+
+  return sensors;
+}
+
+void LMSensorsFacade::ReloadSensors() {
+  CleanupSensors();
+  InitSensors();
+}
+
+void LMSensorsFacade::InitSensors() {
+  if (sensors_init(mConfigFile) != 0) {
+    throw runtime_error("Config file doesn't exist");
+  }
+}
+
+void LMSensorsFacade::CleanupSensors() { sensors_cleanup(); }

app/src/sensor/NvidiaSensor.cxx

@@ -0,0 +1,26 @@
+#include <include/nvml.h>
+
+#include <sensor/NvidiaSensor.h>
+
+using namespace std;
+
+NvidiaSensor::NvidiaSensor() { nvmlInit_v2(); }
+NvidiaSensor::~NvidiaSensor() { nvmlShutdown(); }
+
+int NvidiaSensor::value() {
+  nvmlDevice_t device;
+
+  nvmlDeviceGetHandleByIndex_v2(0, &device);
+
+  unsigned int temp;
+  nvmlDeviceGetTemperature(device, NVML_TEMPERATURE_GPU, &temp);
+
+  return static_cast<int>(temp);
+}
+
+const std::string NvidiaSensor::toString() const { return "NvidiaGPU"; }
+
+json NvidiaSensor::toJson() const {
+  json obj = {"NvidiaSensor", toString()};
+  return obj;
+}

app/src/sensor/Sensor.cxx

@@ -0,0 +1,5 @@
+#include <sensor/Sensor.h>
+
+int Sensor::max() const { return mMax; }
+
+void Sensor::max(int value) { mMax = value; }

app/src/sensor/SensorManager.cxx

@@ -0,0 +1,35 @@
+#include <sensor/SensorManager.h>
+
+#include <boost/log/attributes/named_scope.hpp>
+#include <boost/log/trivial.hpp>
+
+using namespace std;
+
+SensorManager::SensorManager()
+    : mLMSensorsFacade(make_unique<LMSensorsFacade>()),
+      mGPUSensorsFacade(make_unique<GPUSensorsFacade>()) {}
+
+vector<shared_ptr<Sensor>> SensorManager::TemperatureSensors() {
+  BOOST_LOG_FUNCTION();
+
+  vector<shared_ptr<Sensor>> tempSensors;
+
+  tempSensors = mLMSensorsFacade->TemperatureSensors();
+
+  BOOST_LOG_TRIVIAL(trace) << "### Temperature sensors:";
+  for (auto s : tempSensors) {
+    BOOST_LOG_TRIVIAL(trace) << s->toString();
+  }
+
+  //   auto gpuSensors = mGPUSensorsFacade->TemperatureSensors();
+  //  tempSensors.insert(tempSensors.end(), gpuSensors.begin(),
+  //  gpuSensors.end());
+
+  return tempSensors;
+}
+
+vector<shared_ptr<Sensor>> SensorManager::RPMSensors() {
+  return mLMSensorsFacade->RPMSensors();
+}
+
+void SensorManager::ReloadSensors() { mLMSensorsFacade->ReloadSensors(); }

app/unit/fantasize.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Fantasize fan control service
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/fantasize
+Restart=always
+
+[Install]
+WantedBy=graphical.target

doc/Application Overview.drawio

@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2022-09-24T19:31:05.408Z" agent="5.0 (X11)" etag="F8WQQZ1xw24pL79IvZh_" version="20.2.2" type="device"><diagram id="bxDzWbPEviacuxaYKsiD" name="Page-1">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</diagram></mxfile>

doc/ApplicationStart.plantuml

@@ -0,0 +1,17 @@
+@startuml
+
+start
+:Initialization;
+
+if (Config exists) then (yes)
+  :Load config;
+else (no)
+  :Do first-start initialization;
+endif
+
+:Load Fan Curves;
+:Enter fan control loop;
+
+stop
+
+@enduml

doc/Class.plantuml

@@ -0,0 +1,119 @@
+@startuml
+
+package sensor {
+        interface Sensor {
+                + {abstract} int Value()
+        }
+
+        class LMSensor {
+                - string Label
+
+                + int Value()
+        }
+
+        class GPUSensor {
+                + int Value()
+        }
+
+        class LMSensorsFacade
+        {
+                + List<Sensor> RPMSensors()
+                + List<Sensor> TemperatureSensors()
+        }
+
+        class GPUSensorsFacade
+        {
+                + List<Sensor> TemperatureSensors()
+        }
+
+        class SensorManager
+        {
+                - LMSensorsFacade
+                - GPUSensorsFacade
+
+                + List<Sensor> RPMSensors()
+                + List<Sensor> TemperatureSensors()
+        }
+}
+
+package fan
+{
+        class HWMONFan {
+                - string Label
+                - Sensor RPMSensor
+                - PWMControl PWMControl
+
+                + int RPM()
+                + void PWMPercent(int value)
+        }
+
+        class FanGenerator
+        {
+                + FanList FindFans(List<RPMSensor>, List<PWMControl>)
+        }
+
+        struct FanStep
+        {
+                int Temp
+                int Percent
+        }
+
+        class FanCurve
+        {
+                - List<FanStep> Steps
+                - List<Sensor> TempSensor
+                - List<HWMONFan> Fan
+
+                + DoFanControl()
+        }
+
+        class FanController
+        {
+                - List<FanCurve>
+
+                + void StartFanControlLoop()
+        }
+}
+
+package pwm
+{
+        class PWMControl {
+                + void PWMPercent(int value)
+                + int PWM()
+        }
+
+        class PWMControlFacade {
+                + List<PWMControl> PWMControls()
+        }
+}
+
+class ConfigManager
+{
+
+}
+
+HWMONFan -- Sensor
+HWMONFan -- PWMControl
+HWMONFan -- FanCurve
+
+PWMControlFacade -- PWMControl
+
+Sensor <|-- LMSensor
+Sensor <|-- GPUSensor
+
+SensorManager - Sensor
+
+LMSensor -- LMSensorsFacade
+GPUSensor -- GPUSensorsFacade
+LMSensorsFacade -- SensorManager
+GPUSensorsFacade -- SensorManager
+
+FanGenerator -- HWMONFan
+FanGenerator -- SensorManager : uses >
+FanGenerator -- PWMControlFacade : uses >
+
+Sensor - FanCurve
+FanCurve -- FanStep
+
+FanCurve -- FanController
+@enduml

doc/Initialization.plantuml

@@ -0,0 +1,23 @@
+@startuml
+participant main
+participant LMSensorsFacade as lms
+participant GPUSensor as gpus
+participant PWMControlFactory as pwmfc
+
+main -> lms: RPMSensors()
+main <-- lms: vector<Sensor>
+
+main -> lms: TemperatureSensors()
+main <-- lms: vector<Sensor>
+
+main -> gpus: GPUSensor()
+main <-- gpus: Sensor
+note right
+        Add GPUSensor to list
+        of temperature sensors
+end note
+
+main -> pwmfc: PWMControllers()
+main <-- pwmfc: vector<PWMControl>
+
+@enduml

doc/InteractiveMapping.plantuml

@@ -0,0 +1,7 @@
+@startuml
+actor User as usr
+participant Interface as if
+
+
+
+@enduml