| /* |
| * Copyright (C) 2014 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; |
| |
| import java.util.Calendar; |
| |
| import android.app.task.Task; |
| import android.app.task.TaskManager; |
| import android.app.task.TaskParams; |
| import android.app.task.TaskService; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.util.Slog; |
| |
| public class MountServiceIdler extends TaskService { |
| private static final String TAG = "MountServiceIdler"; |
| |
| private static ComponentName sIdleService = |
| new ComponentName(MountServiceIdler.class.getPackage().getName(), |
| MountServiceIdler.class.getName()); |
| |
| private static int MOUNT_TASK_ID = 808; |
| |
| private boolean mStarted; |
| private TaskParams mTaskParams; |
| private Runnable mFinishCallback = new Runnable() { |
| @Override |
| public void run() { |
| Slog.i(TAG, "Got mount service completion callback"); |
| synchronized (mFinishCallback) { |
| if (mStarted) { |
| taskFinished(mTaskParams, false); |
| mStarted = false; |
| } |
| } |
| // ... and try again tomorrow |
| scheduleIdlePass(MountServiceIdler.this); |
| } |
| }; |
| |
| @Override |
| public boolean onStartTask(TaskParams params) { |
| // The mount service will run an fstrim operation asynchronously |
| // on a designated separate thread, so we provide it with a callback |
| // that lets us cleanly end our idle timeslice. It's safe to call |
| // finishIdle() from any thread. |
| mTaskParams = params; |
| MountService ms = MountService.sSelf; |
| if (ms != null) { |
| synchronized (mFinishCallback) { |
| mStarted = true; |
| } |
| ms.runIdleMaintenance(mFinishCallback); |
| } |
| return ms != null; |
| } |
| |
| @Override |
| public boolean onStopTask(TaskParams params) { |
| // Once we kick off the fstrim we aren't actually interruptible; just note |
| // that we don't need to call taskFinished(), and let everything happen in |
| // the callback from the mount service. |
| synchronized (mFinishCallback) { |
| mStarted = false; |
| } |
| return false; |
| } |
| |
| /** |
| * Schedule the idle job that will ping the mount service |
| */ |
| public static void scheduleIdlePass(Context context) { |
| TaskManager tm = (TaskManager) context.getSystemService(Context.TASK_SERVICE); |
| |
| Calendar calendar = tomorrowMidnight(); |
| final long timeToMidnight = calendar.getTimeInMillis() - System.currentTimeMillis(); |
| |
| Task.Builder builder = new Task.Builder(MOUNT_TASK_ID, sIdleService); |
| builder.setRequiresDeviceIdle(true); |
| builder.setRequiresCharging(true); |
| builder.setMinimumLatency(timeToMidnight); |
| tm.schedule(builder.build()); |
| } |
| |
| private static Calendar tomorrowMidnight() { |
| Calendar calendar = Calendar.getInstance(); |
| calendar.setTimeInMillis(System.currentTimeMillis()); |
| calendar.set(Calendar.HOUR, 0); |
| calendar.set(Calendar.MINUTE, 0); |
| calendar.set(Calendar.SECOND, 0); |
| calendar.set(Calendar.MILLISECOND, 0); |
| calendar.add(Calendar.DAY_OF_MONTH, 1); |
| return calendar; |
| } |
| } |