/*
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* Copyright (C) 2014 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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package com.android.server;
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import java.util.Calendar;
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import android.app.ActivityManager;
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import android.app.job.JobInfo;
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import android.app.job.JobParameters;
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import android.app.job.JobScheduler;
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import android.app.job.JobService;
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import android.content.ComponentName;
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import android.content.Context;
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import android.os.RemoteException;
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import android.util.Slog;
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public class MountServiceIdler extends JobService {
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private static final String TAG = "MountServiceIdler";
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private static ComponentName sIdleService =
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new ComponentName("android", MountServiceIdler.class.getName());
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private static int MOUNT_JOB_ID = 808;
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private boolean mStarted;
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private JobParameters mJobParams;
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private Runnable mFinishCallback = new Runnable() {
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@Override
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public void run() {
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Slog.i(TAG, "Got mount service completion callback");
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synchronized (mFinishCallback) {
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if (mStarted) {
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jobFinished(mJobParams, false);
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mStarted = false;
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}
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}
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// ... and try again tomorrow
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scheduleIdlePass(MountServiceIdler.this);
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}
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};
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@Override
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public boolean onStartJob(JobParameters params) {
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// First have the activity manager do its idle maintenance. (Yes this job
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// is really more than just mount, some day it should be renamed to be system
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// idleer).
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try {
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ActivityManager.getService().performIdleMaintenance();
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} catch (RemoteException e) {
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}
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// The mount service will run an fstrim operation asynchronously
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// on a designated separate thread, so we provide it with a callback
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// that lets us cleanly end our idle timeslice. It's safe to call
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// finishIdle() from any thread.
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mJobParams = params;
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StorageManagerService ms = StorageManagerService.sSelf;
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if (ms != null) {
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synchronized (mFinishCallback) {
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mStarted = true;
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}
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ms.runIdleMaint(mFinishCallback);
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}
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return ms != null;
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}
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@Override
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public boolean onStopJob(JobParameters params) {
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// Once we kick off the fstrim we aren't actually interruptible; just note
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// that we don't need to call jobFinished(), and let everything happen in
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// the callback from the mount service.
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StorageManagerService ms = StorageManagerService.sSelf;
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if (ms != null) {
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ms.abortIdleMaint(mFinishCallback);
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synchronized (mFinishCallback) {
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mStarted = false;
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}
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}
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return false;
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}
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/**
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* Schedule the idle job that will ping the mount service
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*/
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public static void scheduleIdlePass(Context context) {
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JobScheduler tm = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE);
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Calendar calendar = tomorrowMidnight();
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final long timeToMidnight = calendar.getTimeInMillis() - System.currentTimeMillis();
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JobInfo.Builder builder = new JobInfo.Builder(MOUNT_JOB_ID, sIdleService);
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builder.setRequiresDeviceIdle(true);
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builder.setRequiresCharging(true);
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builder.setMinimumLatency(timeToMidnight);
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tm.schedule(builder.build());
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}
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private static Calendar tomorrowMidnight() {
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Calendar calendar = Calendar.getInstance();
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calendar.setTimeInMillis(System.currentTimeMillis());
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calendar.set(Calendar.HOUR_OF_DAY, 3);
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calendar.set(Calendar.MINUTE, 0);
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calendar.set(Calendar.SECOND, 0);
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calendar.set(Calendar.MILLISECOND, 0);
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calendar.add(Calendar.DAY_OF_MONTH, 1);
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return calendar;
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}
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}
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