126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ThermalService.h"
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#include <android/os/IThermalService.h>
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#include <android/os/IThermalEventListener.h>
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#include <android/os/Temperature.h>
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#include <binder/IPCThreadState.h>
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#include <binder/IServiceManager.h>
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#include <utils/Errors.h>
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#include <utils/Mutex.h>
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#include <utils/String16.h>
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namespace android {
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namespace os {
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/**
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* Notify registered listeners of a thermal throttling start/stop event.
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* @param temperature the temperature at which the event was generated
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*/
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binder::Status ThermalService::notifyThrottling(
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const bool isThrottling, const Temperature& temperature) {
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Mutex::Autolock _l(mListenersLock);
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mThrottled = isThrottling;
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mThrottleTemperature = temperature;
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for (size_t i = 0; i < mListeners.size(); i++) {
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mListeners[i]->notifyThrottling(isThrottling, temperature);
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}
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return binder::Status::ok();
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}
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/**
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* Query whether the system is currently thermal throttling.
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* @return true if currently thermal throttling, else false
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*/
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binder::Status ThermalService::isThrottling(bool* _aidl_return) {
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Mutex::Autolock _l(mListenersLock);
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*_aidl_return = mThrottled;
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return binder::Status::ok();
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}
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/**
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* Register a new thermal event listener.
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* @param listener the client's IThermalEventListener instance to which
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* notifications are to be sent
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*/
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binder::Status ThermalService::registerThermalEventListener(
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const sp<IThermalEventListener>& listener) {
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{
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if (listener == NULL)
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return binder::Status::ok();
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Mutex::Autolock _l(mListenersLock);
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// check whether this is a duplicate
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for (size_t i = 0; i < mListeners.size(); i++) {
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if (IInterface::asBinder(mListeners[i]) ==
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IInterface::asBinder(listener)) {
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return binder::Status::ok();
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}
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}
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mListeners.add(listener);
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IInterface::asBinder(listener)->linkToDeath(this);
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}
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return binder::Status::ok();
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}
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/**
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* Unregister a previously-registered thermal event listener.
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* @param listener the client's IThermalEventListener instance to which
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* notifications are to no longer be sent
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*/
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binder::Status ThermalService::unregisterThermalEventListener(
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const sp<IThermalEventListener>& listener) {
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if (listener == NULL)
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return binder::Status::ok();
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Mutex::Autolock _l(mListenersLock);
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for (size_t i = 0; i < mListeners.size(); i++) {
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if (IInterface::asBinder(mListeners[i]) ==
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IInterface::asBinder(listener)) {
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IInterface::asBinder(mListeners[i])->unlinkToDeath(this);
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mListeners.removeAt(i);
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break;
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}
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}
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return binder::Status::ok();
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}
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void ThermalService::binderDied(const wp<IBinder>& who) {
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Mutex::Autolock _l(mListenersLock);
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for (size_t i = 0; i < mListeners.size(); i++) {
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if (IInterface::asBinder(mListeners[i]) == who) {
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mListeners.removeAt(i);
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break;
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}
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}
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}
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/**
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* Publish the supplied ThermalService to servicemanager.
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*/
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void ThermalService::publish(
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const sp<ThermalService>& service) {
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defaultServiceManager()->addService(String16("thermalservice"),
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service);
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}
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} // namespace os
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} // namespace android
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