DeviceIdleJobsController.java revision e9a988caca733d2f292991a52a0047685a69812f 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16
17package com.android.server.job.controllers;
18
19import android.content.BroadcastReceiver;
20import android.content.Context;
21import android.content.Intent;
22import android.content.IntentFilter;
23import android.os.PowerManager;
24import android.os.UserHandle;
25import android.util.Slog;
26
27import com.android.internal.util.ArrayUtils;
28import com.android.server.DeviceIdleController;
29import com.android.server.LocalServices;
30import com.android.server.job.JobSchedulerService;
31import com.android.server.job.JobStore;
32
33import java.io.PrintWriter;
34import java.util.Arrays;
35
36/**
37 * When device is dozing, set constraint for all jobs, except whitelisted apps, as not satisfied.
38 * When device is not dozing, set constraint for all jobs as satisfied.
39 */
40public class DeviceIdleJobsController extends StateController {
41
42    private static final String LOG_TAG = "DeviceIdleJobsController";
43    private static final boolean LOG_DEBUG = false;
44
45    // Singleton factory
46    private static Object sCreationLock = new Object();
47    private static DeviceIdleJobsController sController;
48
49    private final JobSchedulerService mJobSchedulerService;
50    private final PowerManager mPowerManager;
51    private final DeviceIdleController.LocalService mLocalDeviceIdleController;
52
53    /**
54     * True when in device idle mode, so we don't want to schedule any jobs.
55     */
56    private boolean mDeviceIdleMode;
57    private int[] mDeviceIdleWhitelistAppIds;
58
59    final JobStore.JobStatusFunctor mUpdateFunctor = new JobStore.JobStatusFunctor() {
60        @Override public void process(JobStatus jobStatus) {
61            updateTaskStateLocked(jobStatus);
62        }
63    };
64
65    /**
66     * Returns a singleton for the DeviceIdleJobsController
67     */
68    public static DeviceIdleJobsController get(JobSchedulerService service) {
69        synchronized (sCreationLock) {
70            if (sController == null) {
71                sController = new DeviceIdleJobsController(service, service.getContext(),
72                        service.getLock());
73            }
74            return sController;
75        }
76    }
77
78    // onReceive
79    private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
80        @Override
81        public void onReceive(Context context, Intent intent) {
82            final String action = intent.getAction();
83            if (PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED.equals(action)
84                    || PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED.equals(action)) {
85                updateIdleMode(mPowerManager != null
86                        ? (mPowerManager.isDeviceIdleMode()
87                                || mPowerManager.isLightDeviceIdleMode())
88                        : false);
89            } else if (PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED.equals(action)) {
90                updateWhitelist();
91            }
92        }
93    };
94
95    private DeviceIdleJobsController(JobSchedulerService jobSchedulerService, Context context,
96            Object lock) {
97        super(jobSchedulerService, context, lock);
98
99        mJobSchedulerService = jobSchedulerService;
100        // Register for device idle mode changes
101        mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
102        mLocalDeviceIdleController =
103                LocalServices.getService(DeviceIdleController.LocalService.class);
104        final IntentFilter filter = new IntentFilter();
105        filter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
106        filter.addAction(PowerManager.ACTION_LIGHT_DEVICE_IDLE_MODE_CHANGED);
107        filter.addAction(PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED);
108        mContext.registerReceiverAsUser(
109                mBroadcastReceiver, UserHandle.ALL, filter, null, null);
110    }
111
112    void updateIdleMode(boolean enabled) {
113        boolean changed = false;
114        // Need the whitelist to be ready when going into idle
115        if (mDeviceIdleWhitelistAppIds == null) {
116            updateWhitelist();
117        }
118        synchronized (mLock) {
119            if (mDeviceIdleMode != enabled) {
120                changed = true;
121            }
122            mDeviceIdleMode = enabled;
123            if (LOG_DEBUG) Slog.d(LOG_TAG, "mDeviceIdleMode=" + mDeviceIdleMode);
124            mJobSchedulerService.getJobStore().forEachJob(mUpdateFunctor);
125        }
126        // Inform the job scheduler service about idle mode changes
127        if (changed) {
128            mStateChangedListener.onDeviceIdleStateChanged(enabled);
129        }
130    }
131
132    /**
133     * Fetches the latest whitelist from the device idle controller.
134     */
135    void updateWhitelist() {
136        synchronized (mLock) {
137            if (mLocalDeviceIdleController != null) {
138                mDeviceIdleWhitelistAppIds =
139                        mLocalDeviceIdleController.getPowerSaveWhitelistUserAppIds();
140                if (LOG_DEBUG) {
141                    Slog.d(LOG_TAG, "Got whitelist " + Arrays.toString(mDeviceIdleWhitelistAppIds));
142                }
143            }
144        }
145    }
146
147    /**
148     * Checks if the given job's scheduling app id exists in the device idle user whitelist.
149     */
150    boolean isWhitelistedLocked(JobStatus job) {
151        if (mDeviceIdleWhitelistAppIds != null
152                && ArrayUtils.contains(mDeviceIdleWhitelistAppIds,
153                        UserHandle.getAppId(job.getSourceUid()))) {
154            return true;
155        }
156        return false;
157    }
158
159    private void updateTaskStateLocked(JobStatus task) {
160        boolean enableTask = !mDeviceIdleMode || isWhitelistedLocked(task);
161        task.setDeviceNotDozingConstraintSatisfied(enableTask);
162    }
163
164    @Override
165    public void maybeStartTrackingJobLocked(JobStatus jobStatus, JobStatus lastJob) {
166        synchronized (mLock) {
167            updateTaskStateLocked(jobStatus);
168        }
169    }
170
171    @Override
172    public void maybeStopTrackingJobLocked(JobStatus jobStatus, JobStatus incomingJob, boolean forUpdate) {
173    }
174
175    @Override
176    public void dumpControllerStateLocked(final PrintWriter pw, final int filterUid) {
177        pw.println("DeviceIdleJobsController");
178        mJobSchedulerService.getJobStore().forEachJob(new JobStore.JobStatusFunctor() {
179            @Override public void process(JobStatus jobStatus) {
180                if (!jobStatus.shouldDump(filterUid)) {
181                    return;
182                }
183                pw.print("  #");
184                jobStatus.printUniqueId(pw);
185                pw.print(" from ");
186                UserHandle.formatUid(pw, jobStatus.getSourceUid());
187                pw.print(": ");
188                pw.print(jobStatus.getSourcePackageName());
189                pw.print(", runnable=");
190                pw.println((jobStatus.satisfiedConstraints
191                        & JobStatus.CONSTRAINT_DEVICE_NOT_DOZING) != 0);
192            }
193        });
194    }
195}