thermalUtilsNetlink.cpp - LeafOS-Project/android_hardware_qcom_thermal - Gitiles

 /*
  * Copyright (c) 2021, The Linux Foundation. All rights reserved.
  * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *	* Redistributions of source code must retain the above copyright
  *	  notice, this list of conditions and the following disclaimer.
  *	* Redistributions in binary form must reproduce the above
  *	  copyright notice, this list of conditions and the following
  *	  disclaimer in the documentation and/or other materials provided
  *	  with the distribution.
  *	* Neither the name of The Linux Foundation nor the names of its
  *	  contributors may be used to endorse or promote products derived
  *	  from this software without specific prior written permission.
  *
  *
  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Changes from Qualcomm Innovation Center are provided under the following license:
  *
  * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *	* Redistributions of source code must retain the above copyright
  *	  notice, this list of conditions and the following disclaimer.
  *	* Redistributions in binary form must reproduce the above
  *	  copyright notice, this list of conditions and the following
  *	  disclaimer in the documentation and/or other materials provided
  *	  with the distribution.
  *	* Neither the name of Qualcomm Innovation Center, Inc. nor the
  *	  names of its contributors may be used to endorse or promote products
  *	  derived from this software without specific prior written permission.
  *
  *
  * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
  * BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
  * AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER
  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  *(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <hidl/HidlTransportSupport.h>

 #include "thermalConfig.h"
 #include "thermalUtilsNetlink.h"

 namespace android {
 namespace hardware {
 namespace thermal {
 namespace V2_0 {
 namespace implementation {

 ThermalUtils::ThermalUtils(const ueventCB &inp_cb):
 	cfg(),
 	cmnInst(),
 	monitor(std::bind(&ThermalUtils::eventParse, this,
 				std::placeholders::_1,
 				std::placeholders::_2),
 		std::bind(&ThermalUtils::sampleParse, this,
 				std::placeholders::_1,
 				std::placeholders::_2),
 		std::bind(&ThermalUtils::eventCreateParse, this,
 				std::placeholders::_1,
 				std::placeholders::_2)),
 	cb(inp_cb)
 {
 	int ret = 0;
 	std::vector<struct therm_sensor> sensorList;
 	std::vector<struct target_therm_cfg> therm_cfg = cfg.fetchConfig();

 	is_sensor_init = false;
 	is_cdev_init = false;
 	ret = cmnInst.initThermalZones(therm_cfg);
 	if (ret > 0) {
 		is_sensor_init = true;
 		sensorList = cmnInst.fetch_sensor_list();
 		std::lock_guard<std::mutex> _lock(sens_cb_mutex);
 		for (struct therm_sensor sens: sensorList) {
 			thermalConfig[sens.tzn] = sens;
 			cmnInst.read_temperature(sens);
 			cmnInst.estimateSeverity(sens);
 			cmnInst.initThreshold(sens);
 		}
 	}
 	monitor.start();
 	ret = cmnInst.initCdev();
 	if (ret > 0) {
 		is_cdev_init = true;
 		cdevList = cmnInst.fetch_cdev_list();
 	}
 }

 void ThermalUtils::Notify(struct therm_sensor& sens)
 {
 	int severity = cmnInst.estimateSeverity(sens);
 	if (severity != -1) {
 		LOG(INFO) << "sensor: " << sens.sensor_name <<" temperature: "
 			<< sens.t.value << " old: " <<
 			(int)sens.lastThrottleStatus << " new: " <<
 			(int)sens.t.throttlingStatus << std::endl;
 		cb(sens.t);
 		cmnInst.initThreshold(sens);
 	}
 }

 void ThermalUtils::eventParse(int tzn, int trip)
 {
 	if (trip != 1)
 		return;
 	if (thermalConfig.find(tzn) == thermalConfig.end()) {
 		LOG(DEBUG) << "sensor is not monitored:" << tzn
 			<< std::endl;
 		return;
 	}
 	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
 	struct therm_sensor& sens = thermalConfig[tzn];
 	return Notify(sens);
 }

 void ThermalUtils::sampleParse(int tzn, int temp)
 {
 	if (thermalConfig.find(tzn) == thermalConfig.end()) {
 		LOG(DEBUG) << "sensor is not monitored:" << tzn
 			<< std::endl;
 		return;
 	}
 	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
 	struct therm_sensor& sens = thermalConfig[tzn];
 	sens.t.value = (float)temp / (float)sens.mulFactor;
 	return Notify(sens);
 }

 void ThermalUtils::eventCreateParse(int tzn, const char *name)
 {
 	int ret = 0;
 	std::vector<struct therm_sensor> sensorList;
 	std::vector<struct target_therm_cfg> therm_cfg = cfg.fetchConfig();
 	std::vector<struct target_therm_cfg>::iterator it_vec;
 	std::vector<std::string>::iterator it;

 	if (isSensorInitialized())
 		return;
 	for (it_vec = therm_cfg.begin();
 		it_vec != therm_cfg.end(); it_vec++) {
 		for (it = it_vec->sensor_list.begin();
 			       it != it_vec->sensor_list.end(); it++) {
 			if (!it->compare(name))
 				break;
 		}
 		if (it != it_vec->sensor_list.end())
 			break;
 	}
 	if (it_vec == therm_cfg.end()) {
 		LOG(DEBUG) << "sensor is not monitored:" << tzn
 			<< std::endl;
 		return;
 	}
 	ret = cmnInst.initThermalZones(therm_cfg);
 	if (ret > 0) {
 		is_sensor_init = true;
 		sensorList = cmnInst.fetch_sensor_list();
 		std::lock_guard<std::mutex> _lock(sens_cb_mutex);
 		for (struct therm_sensor sens: sensorList) {
 			thermalConfig[sens.tzn] = sens;
 			cmnInst.read_temperature(sens);
 			cmnInst.estimateSeverity(sens);
 			cmnInst.initThreshold(sens);
 		}
 	}
 }

 int ThermalUtils::readTemperatures(hidl_vec<Temperature_1_0>& temp)
 {
 	std::unordered_map<int, struct therm_sensor>::iterator it;
 	int ret = 0, idx = 0;
 	std::vector<Temperature_1_0> _temp_v;

 	if (!is_sensor_init)
 		return 0;
 	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
 	for (it = thermalConfig.begin(); it != thermalConfig.end();
 			it++, idx++) {
 		struct therm_sensor& sens = it->second;
 		Temperature_1_0 _temp;

 		/* v1 supports only CPU, GPU, Battery and SKIN */
 		if (sens.t.type > TemperatureType::SKIN)
 			continue;
 		ret = cmnInst.read_temperature(sens);
 		if (ret < 0)
 			return ret;
 		Notify(sens);
 		_temp.currentValue = sens.t.value;
 		_temp.name = sens.t.name;
 		_temp.type = (TemperatureType_1_0)sens.t.type;
 		_temp.throttlingThreshold = sens.thresh.hotThrottlingThresholds[
 					(size_t)sens.throt_severity];
 		_temp.shutdownThreshold = sens.thresh.hotThrottlingThresholds[
 					(size_t)ThrottlingSeverity::SHUTDOWN];
 		_temp.vrThrottlingThreshold = sens.thresh.vrThrottlingThreshold;
 		_temp_v.push_back(_temp);
 	}

 	temp = _temp_v;
 	return temp.size();
 }

 int ThermalUtils::readTemperatures(bool filterType, TemperatureType type,
                                             hidl_vec<Temperature>& temp)
 {
 	std::unordered_map<int, struct therm_sensor>::iterator it;
 	int ret = 0;
 	std::vector<Temperature> _temp;

 	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
 	for (it = thermalConfig.begin(); it != thermalConfig.end(); it++) {
 		struct therm_sensor& sens = it->second;

 		if (filterType && sens.t.type != type)
 			continue;
 		ret = cmnInst.read_temperature(sens);
 		if (ret < 0)
 			return ret;
 		Notify(sens);
 		_temp.push_back(sens.t);
 	}

 	temp = _temp;
 	return temp.size();
 }

 int ThermalUtils::readTemperatureThreshold(bool filterType, TemperatureType type,
                                             hidl_vec<TemperatureThreshold>& thresh)
 {
 	std::unordered_map<int, struct therm_sensor>::iterator it;
 	std::vector<TemperatureThreshold> _thresh;

 	for (it = thermalConfig.begin(); it != thermalConfig.end(); it++) {
 		struct therm_sensor& sens = it->second;

 		if (filterType && sens.t.type != type)
 			continue;
 		_thresh.push_back(sens.thresh);
 	}

 	thresh = _thresh;
 	return thresh.size();
 }

 int ThermalUtils::readCdevStates(bool filterType, cdevType type,
                                             hidl_vec<CoolingDevice>& cdev_out)
 {
 	int ret = 0;
 	std::vector<CoolingDevice> _cdev;

 	for (struct therm_cdev cdev: cdevList) {

 		if (filterType && cdev.c.type != type)
 			continue;
 		ret = cmnInst.read_cdev_state(cdev);
 		if (ret < 0)
 			return ret;
 		_cdev.push_back(cdev.c);
 	}

 	cdev_out = _cdev;

 	return cdev_out.size();
 }

 int ThermalUtils::fetchCpuUsages(hidl_vec<CpuUsage>& cpu_usages)
 {
 	return cmnInst.get_cpu_usages(cpu_usages);
 }

 }  // namespace implementation
 }  // namespace V2_0
 }  // namespace thermal
 }  // namespace hardware
 }  // namespace android
	/*
	* Copyright (c) 2021, The Linux Foundation. All rights reserved.
	* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following
	* disclaimer in the documentation and/or other materials provided
	* with the distribution.
	* * Neither the name of The Linux Foundation nor the names of its
	* contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	*
	* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
	* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
	* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* Changes from Qualcomm Innovation Center are provided under the following license:
	*
	* Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following
	* disclaimer in the documentation and/or other materials provided
	* with the distribution.
	* * Neither the name of Qualcomm Innovation Center, Inc. nor the
	* names of its contributors may be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	*
	* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
	* BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
	* AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
	* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	*(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include <android-base/file.h>
	#include <android-base/logging.h>
	#include <android-base/properties.h>
	#include <android-base/stringprintf.h>
	#include <android-base/strings.h>
	#include <hidl/HidlTransportSupport.h>

	#include "thermalConfig.h"
	#include "thermalUtilsNetlink.h"

	namespace android {
	namespace hardware {
	namespace thermal {
	namespace V2_0 {
	namespace implementation {

	ThermalUtils::ThermalUtils(const ueventCB &inp_cb):
	cfg(),
	cmnInst(),
	monitor(std::bind(&ThermalUtils::eventParse, this,
	std::placeholders::_1,
	std::placeholders::_2),
	std::bind(&ThermalUtils::sampleParse, this,
	std::placeholders::_1,
	std::placeholders::_2),
	std::bind(&ThermalUtils::eventCreateParse, this,
	std::placeholders::_1,
	std::placeholders::_2)),
	cb(inp_cb)
	{
	int ret = 0;
	std::vector<struct therm_sensor> sensorList;
	std::vector<struct target_therm_cfg> therm_cfg = cfg.fetchConfig();

	is_sensor_init = false;
	is_cdev_init = false;
	ret = cmnInst.initThermalZones(therm_cfg);
	if (ret > 0) {
	is_sensor_init = true;
	sensorList = cmnInst.fetch_sensor_list();
	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
	for (struct therm_sensor sens: sensorList) {
	thermalConfig[sens.tzn] = sens;
	cmnInst.read_temperature(sens);
	cmnInst.estimateSeverity(sens);
	cmnInst.initThreshold(sens);
	}
	}
	monitor.start();
	ret = cmnInst.initCdev();
	if (ret > 0) {
	is_cdev_init = true;
	cdevList = cmnInst.fetch_cdev_list();
	}
	}

	void ThermalUtils::Notify(struct therm_sensor& sens)
	{
	int severity = cmnInst.estimateSeverity(sens);
	if (severity != -1) {
	LOG(INFO) << "sensor: " << sens.sensor_name <<" temperature: "
	<< sens.t.value << " old: " <<
	(int)sens.lastThrottleStatus << " new: " <<
	(int)sens.t.throttlingStatus << std::endl;
	cb(sens.t);
	cmnInst.initThreshold(sens);
	}
	}

	void ThermalUtils::eventParse(int tzn, int trip)
	{
	if (trip != 1)
	return;
	if (thermalConfig.find(tzn) == thermalConfig.end()) {
	LOG(DEBUG) << "sensor is not monitored:" << tzn
	<< std::endl;
	return;
	}
	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
	struct therm_sensor& sens = thermalConfig[tzn];
	return Notify(sens);
	}

	void ThermalUtils::sampleParse(int tzn, int temp)
	{
	if (thermalConfig.find(tzn) == thermalConfig.end()) {
	LOG(DEBUG) << "sensor is not monitored:" << tzn
	<< std::endl;
	return;
	}
	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
	struct therm_sensor& sens = thermalConfig[tzn];
	sens.t.value = (float)temp / (float)sens.mulFactor;
	return Notify(sens);
	}

	void ThermalUtils::eventCreateParse(int tzn, const char *name)
	{
	int ret = 0;
	std::vector<struct therm_sensor> sensorList;
	std::vector<struct target_therm_cfg> therm_cfg = cfg.fetchConfig();
	std::vector<struct target_therm_cfg>::iterator it_vec;
	std::vector<std::string>::iterator it;

	if (isSensorInitialized())
	return;
	for (it_vec = therm_cfg.begin();
	it_vec != therm_cfg.end(); it_vec++) {
	for (it = it_vec->sensor_list.begin();
	it != it_vec->sensor_list.end(); it++) {
	if (!it->compare(name))
	break;
	}
	if (it != it_vec->sensor_list.end())
	break;
	}
	if (it_vec == therm_cfg.end()) {
	LOG(DEBUG) << "sensor is not monitored:" << tzn
	<< std::endl;
	return;
	}
	ret = cmnInst.initThermalZones(therm_cfg);
	if (ret > 0) {
	is_sensor_init = true;
	sensorList = cmnInst.fetch_sensor_list();
	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
	for (struct therm_sensor sens: sensorList) {
	thermalConfig[sens.tzn] = sens;
	cmnInst.read_temperature(sens);
	cmnInst.estimateSeverity(sens);
	cmnInst.initThreshold(sens);
	}
	}
	}

	int ThermalUtils::readTemperatures(hidl_vec<Temperature_1_0>& temp)
	{
	std::unordered_map<int, struct therm_sensor>::iterator it;
	int ret = 0, idx = 0;
	std::vector<Temperature_1_0> _temp_v;

	if (!is_sensor_init)
	return 0;
	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
	for (it = thermalConfig.begin(); it != thermalConfig.end();
	it++, idx++) {
	struct therm_sensor& sens = it->second;
	Temperature_1_0 _temp;

	/* v1 supports only CPU, GPU, Battery and SKIN */
	if (sens.t.type > TemperatureType::SKIN)
	continue;
	ret = cmnInst.read_temperature(sens);
	if (ret < 0)
	return ret;
	Notify(sens);
	_temp.currentValue = sens.t.value;
	_temp.name = sens.t.name;
	_temp.type = (TemperatureType_1_0)sens.t.type;
	_temp.throttlingThreshold = sens.thresh.hotThrottlingThresholds[
	(size_t)sens.throt_severity];
	_temp.shutdownThreshold = sens.thresh.hotThrottlingThresholds[
	(size_t)ThrottlingSeverity::SHUTDOWN];
	_temp.vrThrottlingThreshold = sens.thresh.vrThrottlingThreshold;
	_temp_v.push_back(_temp);
	}

	temp = _temp_v;
	return temp.size();
	}

	int ThermalUtils::readTemperatures(bool filterType, TemperatureType type,
	hidl_vec<Temperature>& temp)
	{
	std::unordered_map<int, struct therm_sensor>::iterator it;
	int ret = 0;
	std::vector<Temperature> _temp;

	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
	for (it = thermalConfig.begin(); it != thermalConfig.end(); it++) {
	struct therm_sensor& sens = it->second;

	if (filterType && sens.t.type != type)
	continue;
	ret = cmnInst.read_temperature(sens);
	if (ret < 0)
	return ret;
	Notify(sens);
	_temp.push_back(sens.t);
	}

	temp = _temp;
	return temp.size();
	}

	int ThermalUtils::readTemperatureThreshold(bool filterType, TemperatureType type,
	hidl_vec<TemperatureThreshold>& thresh)
	{
	std::unordered_map<int, struct therm_sensor>::iterator it;
	std::vector<TemperatureThreshold> _thresh;

	for (it = thermalConfig.begin(); it != thermalConfig.end(); it++) {
	struct therm_sensor& sens = it->second;

	if (filterType && sens.t.type != type)
	continue;
	_thresh.push_back(sens.thresh);
	}

	thresh = _thresh;
	return thresh.size();
	}

	int ThermalUtils::readCdevStates(bool filterType, cdevType type,
	hidl_vec<CoolingDevice>& cdev_out)
	{
	int ret = 0;
	std::vector<CoolingDevice> _cdev;

	for (struct therm_cdev cdev: cdevList) {

	if (filterType && cdev.c.type != type)
	continue;
	ret = cmnInst.read_cdev_state(cdev);
	if (ret < 0)
	return ret;
	_cdev.push_back(cdev.c);
	}

	cdev_out = _cdev;

	return cdev_out.size();
	}

	int ThermalUtils::fetchCpuUsages(hidl_vec<CpuUsage>& cpu_usages)
	{
	return cmnInst.get_cpu_usages(cpu_usages);
	}

	} // namespace implementation
	} // namespace V2_0
	} // namespace thermal
	} // namespace hardware
	} // namespace android