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/*
* Copyright (C) 2016 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
*/
package com.android.server.job.controllers;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.PowerManager;
import android.os.UserHandle;
import android.util.Slog;
import com.android.internal.util.ArrayUtils;
import com.android.server.DeviceIdleController;
import com.android.server.LocalServices;
import com.android.server.job.JobSchedulerService;
import com.android.server.job.JobStore;
import java.io.PrintWriter;
import java.util.Arrays;
/**
* When device is dozing, set constraint for all jobs, except whitelisted apps, as not satisfied.
* When device is not dozing, set constraint for all jobs as satisfied.
*/
public final class DeviceIdleJobsController extends StateController {
private static final String LOG_TAG = "DeviceIdleJobsController";
private static final boolean LOG_DEBUG = false;
// Singleton factory
private static Object sCreationLock = new Object();
private static DeviceIdleJobsController sController;
private final JobSchedulerService mJobSchedulerService;
private final PowerManager mPowerManager;
private final DeviceIdleController.LocalService mLocalDeviceIdleController;
/**
* True when in device idle mode, so we don't want to schedule any jobs.
*/
private boolean mDeviceIdleMode;
private int[] mDeviceIdleWhitelistAppIds;
final JobStore.JobStatusFunctor mUpdateFunctor = new JobStore.JobStatusFunctor() {
@Override public void process(JobStatus jobStatus) {
updateTaskStateLocked(jobStatus);
}
};
/**
* Returns a singleton for the DeviceIdleJobsController
*/
public static DeviceIdleJobsController get(JobSchedulerService service) {
synchronized (sCreationLock) {
if (sController == null) {
sController = new DeviceIdleJobsController(service, service.getContext(),
service.getLock());
}
return sController;
}
}
// onReceive
private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED.equals(action)
|| PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED.equals(action)) {
updateIdleMode(mPowerManager != null
? (mPowerManager.isDeviceIdleMode()
|| mPowerManager.isLightDeviceIdleMode())
: false);
} else if (PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED.equals(action)) {
updateWhitelist();
}
}
};
private DeviceIdleJobsController(JobSchedulerService jobSchedulerService, Context context,
Object lock) {
super(jobSchedulerService, context, lock);
mJobSchedulerService = jobSchedulerService;
// Register for device idle mode changes
mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
mLocalDeviceIdleController =
LocalServices.getService(DeviceIdleController.LocalService.class);
final IntentFilter filter = new IntentFilter();
filter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
filter.addAction(PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED);
filter.addAction(PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED);
mContext.registerReceiverAsUser(
mBroadcastReceiver, UserHandle.ALL, filter, null, null);
}
void updateIdleMode(boolean enabled) {
boolean changed = false;
// Need the whitelist to be ready when going into idle
if (mDeviceIdleWhitelistAppIds == null) {
updateWhitelist();
}
synchronized (mLock) {
if (mDeviceIdleMode != enabled) {
changed = true;
}
mDeviceIdleMode = enabled;
if (LOG_DEBUG) Slog.d(LOG_TAG, "mDeviceIdleMode=" + mDeviceIdleMode);
mJobSchedulerService.getJobStore().forEachJob(mUpdateFunctor);
}
// Inform the job scheduler service about idle mode changes
if (changed) {
mStateChangedListener.onDeviceIdleStateChanged(enabled);
}
}
/**
* Fetches the latest whitelist from the device idle controller.
*/
void updateWhitelist() {
synchronized (mLock) {
if (mLocalDeviceIdleController != null) {
mDeviceIdleWhitelistAppIds =
mLocalDeviceIdleController.getPowerSaveWhitelistUserAppIds();
if (LOG_DEBUG) {
Slog.d(LOG_TAG, "Got whitelist " + Arrays.toString(mDeviceIdleWhitelistAppIds));
}
}
}
}
/**
* Checks if the given job's scheduling app id exists in the device idle user whitelist.
*/
boolean isWhitelistedLocked(JobStatus job) {
if (mDeviceIdleWhitelistAppIds != null
&& ArrayUtils.contains(mDeviceIdleWhitelistAppIds,
UserHandle.getAppId(job.getSourceUid()))) {
return true;
}
return false;
}
private void updateTaskStateLocked(JobStatus task) {
final boolean whitelisted = isWhitelistedLocked(task);
final boolean enableTask = !mDeviceIdleMode || whitelisted;
task.setDeviceNotDozingConstraintSatisfied(enableTask, whitelisted);
}
@Override
public void maybeStartTrackingJobLocked(JobStatus jobStatus, JobStatus lastJob) {
updateTaskStateLocked(jobStatus);
}
@Override
public void maybeStopTrackingJobLocked(JobStatus jobStatus, JobStatus incomingJob,
boolean forUpdate) {
}
@Override
public void dumpControllerStateLocked(final PrintWriter pw, final int filterUid) {
pw.println("DeviceIdleJobsController");
mJobSchedulerService.getJobStore().forEachJob(new JobStore.JobStatusFunctor() {
@Override public void process(JobStatus jobStatus) {
if (!jobStatus.shouldDump(filterUid)) {
return;
}
pw.print(" #");
jobStatus.printUniqueId(pw);
pw.print(" from ");
UserHandle.formatUid(pw, jobStatus.getSourceUid());
pw.print(": ");
pw.print(jobStatus.getSourcePackageName());
pw.print((jobStatus.satisfiedConstraints
& JobStatus.CONSTRAINT_DEVICE_NOT_DOZING) != 0
? " RUNNABLE" : " WAITING");
if (jobStatus.dozeWhitelisted) {
pw.print(" WHITELISTED");
}
pw.println();
}
});
}
}
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