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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdint.h>
#include <math.h>
#include <sys/types.h>
#include <cutils/atomic.h>
#include <utils/Errors.h>
#include <utils/Singleton.h>
#include <binder/BinderService.h>
#include <binder/Parcel.h>
#include "BatteryService.h"
namespace android {
// ---------------------------------------------------------------------------
BatteryService::BatteryService()
: mBatteryStatService(nullptr), mLastWakeupSensorEventReportedMs(0) {}
bool BatteryService::addSensor(uid_t uid, int handle) {
Mutex::Autolock _l(mActivationsLock);
Info key(uid, handle);
ssize_t index = mActivations.indexOf(key);
if (index < 0) {
index = mActivations.add(key);
}
Info& info(mActivations.editItemAt(index));
info.count++;
return info.count == 1;
}
bool BatteryService::removeSensor(uid_t uid, int handle) {
Mutex::Autolock _l(mActivationsLock);
ssize_t index = mActivations.indexOf(Info(uid, handle));
if (index < 0) return false;
Info& info(mActivations.editItemAt(index));
info.count--;
return info.count == 0;
}
void BatteryService::enableSensorImpl(uid_t uid, int handle) {
if (checkService()) {
if (addSensor(uid, handle)) {
int64_t identity = IPCThreadState::self()->clearCallingIdentity();
mBatteryStatService->noteStartSensor(uid, handle);
IPCThreadState::self()->restoreCallingIdentity(identity);
}
}
}
void BatteryService::disableSensorImpl(uid_t uid, int handle) {
if (checkService()) {
if (removeSensor(uid, handle)) {
int64_t identity = IPCThreadState::self()->clearCallingIdentity();
mBatteryStatService->noteStopSensor(uid, handle);
IPCThreadState::self()->restoreCallingIdentity(identity);
}
}
}
void BatteryService::noteWakeupSensorEventImpl(int64_t elapsedNanos, uid_t uid, int handle) {
if (checkService()) {
int64_t identity = IPCThreadState::self()->clearCallingIdentity();
mBatteryStatService->noteWakeupSensorEvent(elapsedNanos, uid, handle);
IPCThreadState::self()->restoreCallingIdentity(identity);
}
}
bool BatteryService::checkService() {
if (mBatteryStatService == nullptr) {
const sp<IServiceManager> sm(defaultServiceManager());
if (sm != nullptr) {
const String16 name("batterystats");
mBatteryStatService = interface_cast<IBatteryStats>(sm->getService(name));
}
}
return mBatteryStatService != nullptr;
}
ANDROID_SINGLETON_STATIC_INSTANCE(BatteryService)
// ---------------------------------------------------------------------------
}; // namespace android
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