Thermal

#include <thermal.h>

Summary

Enumerations
`AThermalStatus{ ATHERMAL_STATUS_ERROR = -1, ATHERMAL_STATUS_NONE = 0, ATHERMAL_STATUS_LIGHT = 1, ATHERMAL_STATUS_MODERATE = 2, ATHERMAL_STATUS_SEVERE = 3, ATHERMAL_STATUS_CRITICAL = 4, ATHERMAL_STATUS_EMERGENCY = 5, ATHERMAL_STATUS_SHUTDOWN = 6 }`	enum

Typedefs
`AThermalManager`	typedef `struct AThermalManager` An opaque type representing a handle to a thermal manager.
`AThermal_StatusCallback)(void *data, AThermalStatus status)`	typedef `int(*` Prototype of the function that is called when thermal status changes.

Functions
`AThermal_acquireManager()`	`AThermalManager *` Acquire an instance of the thermal manager.
`AThermal_getCurrentThermalStatus(AThermalManager *manager)`	`AThermalStatus` Gets the current thermal status.
`AThermal_registerThermalStatusListener(AThermalManager manager, AThermal_StatusCallback callback, void data)`	`int` Register the thermal status listener for thermal status change.
`AThermal_releaseManager(AThermalManager *manager)`	`void` Release the thermal manager pointer acquired via AThermal_acquireManager.
`AThermal_unregisterThermalStatusListener(AThermalManager manager, AThermal_StatusCallback callback, void data)`	`int` Unregister the thermal status listener previously resgistered.

Enumerations

AThermalStatus

 AThermalStatus

Properties
`ATHERMAL_STATUS_CRITICAL`	Platform has done everything to reduce power.
`ATHERMAL_STATUS_EMERGENCY`	Key components in platform are shutting down due to thermal condition. Device functionalities will be limited.
`ATHERMAL_STATUS_ERROR`	Error in thermal status.
`ATHERMAL_STATUS_LIGHT`	Light throttling where UX is not impacted.
`ATHERMAL_STATUS_MODERATE`	Moderate throttling where UX is not largely impacted.
`ATHERMAL_STATUS_NONE`	Not under throttling.
`ATHERMAL_STATUS_SEVERE`	Severe throttling where UX is largely impacted.
`ATHERMAL_STATUS_SHUTDOWN`	Need shutdown immediately.

Typedefs

AThermalManager

struct AThermalManager AThermalManager

An opaque type representing a handle to a thermal manager.

An instance of thermal manager must be acquired prior to using thermal status APIs and must be released after use.

To use:

Create a new thermal manager instance by calling the AThermal_acquireManager function.
Get current thermal status with AThermal_getCurrentThermalStatus.
Register a thermal status listener with AThermal_registerThermalStatusListener.
Unregister a thermal status listener with AThermal_unregisterThermalStatusListener.
Release the thermal manager instance with AThermal_releaseManager.

AThermal_StatusCallback

int(* AThermal_StatusCallback)(void *data, AThermalStatus status)

Prototype of the function that is called when thermal status changes.

It's passed the updated thermal status as parameter, as well as the pointer provided by the client that registered a callback.

Functions

AThermal_acquireManager

AThermalManager * AThermal_acquireManager()

Acquire an instance of the thermal manager.

This must be freed using AThermal_releaseManager.

Details
Returns	manager instance on success, nullptr on failure.

AThermal_getCurrentThermalStatus

AThermalStatus AThermal_getCurrentThermalStatus(
  AThermalManager *manager
)

Gets the current thermal status.

Details

Parameters

manager

The manager instance to use to query the thermal status. Acquired via AThermal_acquireManager.

Returns

current thermal status, ATHERMAL_STATUS_ERROR on failure.

AThermal_registerThermalStatusListener

int AThermal_registerThermalStatusListener(
  AThermalManager *manager,
  AThermal_StatusCallback callback,
  void *data
)

Details

Parameters

`manager`	The manager instance to use to register. Acquired via AThermal_acquireManager.
`callback`	The callback function to be called when thermal status updated.
`data`	The data pointer to be passed when callback is called.

Returns

0 on success EINVAL if the listener and data pointer were previously added and not removed. EPERM if the required permission is not held. EPIPE if communication with the system service has failed.

AThermal_releaseManager

void AThermal_releaseManager(
  AThermalManager *manager
)

Release the thermal manager pointer acquired via AThermal_acquireManager.

Details

Parameters

manager

The manager to be released.

AThermal_unregisterThermalStatusListener

int AThermal_unregisterThermalStatusListener(
  AThermalManager *manager,
  AThermal_StatusCallback callback,
  void *data
)

Unregister the thermal status listener previously resgistered.

Details

Parameters

`manager`	The manager instance to use to unregister. Acquired via AThermal_acquireManager.
`callback`	The callback function to be called when thermal status updated.
`data`	The data pointer to be passed when callback is called.

Returns

0 on success EINVAL if the listener and data pointer were not previously added. EPERM if the required permission is not held. EPIPE if communication with the system service has failed.