thermal: Add AThermal_getThermalHeadroom (1900bef1) · Commits · e / os / android_frameworks_base

native/android/libandroid.map.txt

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -291,6 +291,7 @@ LIBANDROID {
	AThermal_getCurrentThermalStatus; # introduced=30		AThermal_getCurrentThermalStatus; # introduced=30
	AThermal_registerThermalStatusListener; # introduced=30		AThermal_registerThermalStatusListener; # introduced=30
	AThermal_unregisterThermalStatusListener; # introduced=30		AThermal_unregisterThermalStatusListener; # introduced=30
			AThermal_getThermalHeadroom; # introduced=31
	local:		local:
	*;		*;
	};		};

native/android/thermal.cpp

+43 −0

Original line number	Original line	Diff line number	Diff line
	@@ -18,6 +18,7 @@

	#include <cerrno>		#include <cerrno>
	#include <thread>		#include <thread>
			#include <limits>

	#include <android/thermal.h>		#include <android/thermal.h>
	#include <android/os/BnThermalStatusListener.h>		#include <android/os/BnThermalStatusListener.h>
	@@ -52,6 +53,7 @@ struct AThermalManager {
	status_t getCurrentThermalStatus(int32_t *status);		status_t getCurrentThermalStatus(int32_t *status);
	status_t addListener(AThermal_StatusCallback, void *data);		status_t addListener(AThermal_StatusCallback, void *data);
	status_t removeListener(AThermal_StatusCallback, void *data);		status_t removeListener(AThermal_StatusCallback, void *data);
			status_t getThermalHeadroom(int32_t forecastSeconds, float *result);
	private:		private:
	AThermalManager(sp<IThermalService> service);		AThermalManager(sp<IThermalService> service);
	sp<IThermalService> mThermalSvc;		sp<IThermalService> mThermalSvc;
	@@ -184,6 +186,18 @@ status_t AThermalManager::getCurrentThermalStatus(int32_t *status) {
	return OK;		return OK;
	}		}

			status_t AThermalManager::getThermalHeadroom(int32_t forecastSeconds, float *result) {
			binder::Status ret = mThermalSvc->getThermalHeadroom(forecastSeconds, result);

			if (!ret.isOk()) {
			if (ret.exceptionCode() == binder::Status::EX_SECURITY) {
			return EPERM;
			}
			return EPIPE;
			}
			return OK;
			}

	/**		/**
	* Acquire an instance of the thermal manager. This must be freed using		* Acquire an instance of the thermal manager. This must be freed using
	* {@link AThermal_releaseManager}.		* {@link AThermal_releaseManager}.
	@@ -259,3 +273,32 @@ int AThermal_unregisterThermalStatusListener(AThermalManager *manager,
	AThermal_StatusCallback callback, void *data) {		AThermal_StatusCallback callback, void *data) {
	return manager->removeListener(callback, data);		return manager->removeListener(callback, data);
	}		}

			/**
			* Provides an estimate of how much thermal headroom the device currently has
			* before hitting severe throttling.
			*
			* Note that this only attempts to track the headroom of slow-moving sensors,
			* such as the skin temperature sensor. This means that there is no benefit to
			* calling this function more frequently than about once per second, and attempts
			* to call significantly more frequently may result in the function returning {@code NaN}.
			*
			* See also PowerManager#getThermalHeadroom.
			*
			* @param manager The manager instance to use
			* @param forecastSeconds how many seconds in the future to forecast
			* @return a value greater than or equal to 0.0 where 1.0 indicates the SEVERE throttling
			* threshold. Returns NaN if the device does not support this functionality or if
			* this function is called significantly faster than once per second.
			*/
			float AThermal_getThermalHeadroom(AThermalManager *manager,
			int forecastSeconds) {
			float result = 0.0f;
			status_t ret = manager->getThermalHeadroom(forecastSeconds, &result);

			if (ret != OK) {
			result = std::numeric_limits<float>::quiet_NaN();
			}

			return result;
			}