（3）程序管理

      二、啟動一個Activity的方式有以下幾種：
   （1）在應用程式中呼叫startActivity啟動指定的Activity
   （2）在Home程式中單擊一個應用圖示，啟動新的Activity
   （3）按“Back”鍵，結束當前Activity，返回到上一個Activity
   （4）長按“Home”鍵，顯示出當前正在執行的程式列表，從中選擇一個啟動
     這四種啟動方式的主體處理流程都會按照第一種啟動方式執行，後面三種方式只是在前端訊息處理上各有不同。

      三、程序資料類ProcessRecord

      該類的原始碼在~\frameworks\base\services\java\com\android\server\am路徑下。

      一般情況下，一個APK檔案執行時會對應一個程序，ProcessRecord用來記錄一個程序中的相關資訊，主要包含的變數有：
      （1）程序檔案資訊：與該程序對應的APK檔案的內部資訊，如

        final ApplicationInfo info; // all about the first app in the process
        final String processName;   // name of the process

        final ArrayMap<String, ProcessStats.ProcessState> pkgList 
            = new ArrayMap<String, ProcessStats.ProcessState>();   //儲存程序中所有APK檔案包名

      （2）程序的記憶體狀態資訊：用於Linux系統的out of memory(OOM)情況的處理，當發生記憶體緊張時，Linux系統會根據程序的記憶體狀態資訊殺掉低優先順序的程序，包括的變數有

        int maxAdj;                 // Maximum OOM adjustment for this process
        int curRawAdj;              // Current OOM unlimited adjustment for this process
        int setRawAdj;              // Last set OOM unlimited adjustment for this process
        int curAdj;                 // Current OOM adjustment for this process
        int setAdj;                 // Last set OOM adjustment for this process
       變數中Adj的含義是調整值（adjustment）

     （3）程序中包含的Activity、Provider、Service等，如下

       final ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>();
       final ArraySet<ServiceRecord> services = new ArraySet<ServiceRecord>();
       final ArraySet<ServiceRecord> executingServices = new ArraySet<ServiceRecord>();
       final ArraySet<ConnectionRecord> connections = new ArraySet<ConnectionRecord>();
       final ArraySet<ReceiverList> receivers = new ArraySet<ReceiverList>();
       final ArrayMap<String, ContentProviderRecord> pubProviders = new ArrayMap<String,             ContentProviderRecord>();
    final ArrayList<ContentProviderConnection> conProviders = new ArrayList<ContentProviderConnection>();

     四、ActivityRecord資料類（Android 2.3以前版本叫HistoryRecord類）

     ActivityManagerService使用ActivityRecord資料類來儲存每個Activity的資訊，ActivityRecord類基於IApplicationToken.Stub類，也是一個Binder,所以可以被IPC呼叫。

     主要包含的變數有：

   （1）環境資訊：Activity的工作環境，比如程序名稱、檔案路徑、資料路徑、圖示、主題等，這些資訊一般是固定的，比如以下變數

    final String packageName; // the package implementing intent's component
    final String processName; // process where this component wants to run
    final String baseDir;   // where activity source (resources etc) located
    final String resDir;   // where public activity source (public resources etc) located
    final String dataDir;   // where activity data should go
    int theme;              // resource identifier of activity's theme.
    int realTheme;          // actual theme resource we will use, never 0.

   （2）執行狀態資料資訊：如idle、stop、finishing等，一般為boolean型別，如下

    boolean haveState;      // have we gotten the last activity state?
    boolean stopped;        // is activity pause finished?
    boolean delayedResume;  // not yet resumed because of stopped app switches?
    boolean finishing;      // activity in pending finish list?
    boolean configDestroy;  // need to destroy due to config change?

   五、TaskRecord類

    ActivityManagerService中使用任務的概念來確保Activity啟動和退出的順序。
    TaskRecord中的幾個重要變數如下：
    final int taskId;       // 每個任務的標識.
    Intent intent;          // 建立該任務時對應的intent
    int numActivities;   //該任務中的Activity數目
    final ArrayList<ActivityRecord> mActivities = new ArrayList<ActivityRecord>();  //按照出現的先後順序列出該任務中的所有Activity

     六、ActivityManagerService中一些重要的與排程相關的變數

    （1）記錄最近啟動的Activity，如果RAM容量較小，則記錄的最大值為10個，否則為20個，超過該值後，Ams會捨棄最早記錄的Activity
      static final int MAX_RECENT_TASKS = ActivityManager.isLowRamDeviceStatic() ? 10 : 20;
    （2）當Ams通知應用程式啟動（Launch）某個Activity時，如果超過10s，Ams就會放棄
    static final int PROC_START_TIMEOUT = 10*1000;
    （3）當Ams啟動某個客戶程序後，客戶程序必須在10s之內報告Ams自己已經啟動，否則Ams會認為指定的客戶程序不存在
    static final int PROC_START_TIMEOUT = 10*1000;
    （4）等待序列：
    當Ams內部還沒有準備好時，如果客戶程序請求啟動某個Activity，那麼會被暫時儲存到該變數中，
      final ArrayList<PendingActivityLaunch> mPendingActivityLaunches
            = new ArrayList<PendingActivityLaunch>();
    （5）優先啟動，其次再停止。程序A1包含兩個Activity，啟動順序為A1->A2，當用戶請求啟動A2時，如果A1正在執行，Ams會先暫停A1，然後啟動A2，當A2啟動後再停止A1。
       private final ArrayList<TaskRecord> mRecentTasks = new ArrayList<TaskRecord>();

     七、startActivity()的流程
       當用戶單擊某個應用圖示後，執行程式會在該圖示的onClick()事件中呼叫startActivity()方法，該方法會呼叫startActivityForResult()，在這個方法內部會呼叫Instrumentation物件的executeStartActivity()方法，每個Activity內部都有一個Instrumentation物件的引用，它就是一個管家，ActivityThread要建立或者暫停某個Activity都是通過它實現的。

      流程圖如下所示：

     下面附上ActivityManagerService的完整原始碼，有興趣的童鞋可以深入研究。

/*
 * Copyright (C) 2006-2008 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.am;

import static android.content.pm.PackageManager.PERMISSION_GRANTED;
import static com.android.internal.util.XmlUtils.readIntAttribute;
import static com.android.internal.util.XmlUtils.readLongAttribute;
import static com.android.internal.util.XmlUtils.writeIntAttribute;
import static com.android.internal.util.XmlUtils.writeLongAttribute;
import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
import static org.xmlpull.v1.XmlPullParser.START_TAG;

import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID;

import android.app.AppOpsManager;
import android.appwidget.AppWidgetManager;
import android.util.ArrayMap;
import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.app.IAppOpsService;
import com.android.internal.app.ProcessStats;
import com.android.internal.app.ResolverActivity;
import com.android.internal.os.BackgroundThread;
import com.android.internal.os.BatteryStatsImpl;
import com.android.internal.os.ProcessCpuTracker;
import com.android.internal.os.TransferPipe;
import com.android.internal.util.FastPrintWriter;
import com.android.internal.util.FastXmlSerializer;
import com.android.internal.util.MemInfoReader;
import com.android.internal.util.Preconditions;
import com.android.server.AppOpsService;
import com.android.server.AttributeCache;
import com.android.server.IntentResolver;
import com.android.internal.app.ProcessMap;
import com.android.server.SystemServer;
import com.android.server.Watchdog;
import com.android.server.am.ActivityStack.ActivityState;
import com.android.server.firewall.IntentFirewall;
import com.android.server.pm.UserManagerService;
import com.android.server.wm.AppTransition;
import com.android.server.wm.StackBox;
import com.android.server.wm.WindowManagerService;
import com.google.android.collect.Lists;
import com.google.android.collect.Maps;

import dalvik.system.Zygote;

import libcore.io.IoUtils;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;

import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.app.ActivityManager.StackBoxInfo;
import android.app.ActivityManager.StackInfo;
import android.app.ActivityManagerNative;
import android.app.ActivityOptions;
import android.app.ActivityThread;
import android.app.AlertDialog;
import android.app.AppGlobals;
import android.app.ApplicationErrorReport;
import android.app.Dialog;
import android.app.IActivityController;
import android.app.IApplicationThread;
import android.app.IInstrumentationWatcher;
import android.app.INotificationManager;
import android.app.IProcessObserver;
import android.app.IServiceConnection;
import android.app.IStopUserCallback;
import android.app.IThumbnailReceiver;
import android.app.IUiAutomationConnection;
import android.app.IUserSwitchObserver;
import android.app.Instrumentation;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.backup.IBackupManager;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ClipData;
import android.content.ComponentCallbacks2;
import android.content.ComponentName;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.IContentProvider;
import android.content.IIntentReceiver;
import android.content.IIntentSender;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.IntentSender;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.ConfigurationInfo;
import android.content.pm.IPackageDataObserver;
import android.content.pm.IPackageManager;
import android.content.pm.InstrumentationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ParceledListSlice;
import android.content.pm.UserInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.PathPermission;
import android.content.pm.ProviderInfo;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.content.res.CompatibilityInfo;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.net.Proxy;
import android.net.ProxyProperties;
import android.net.Uri;
import android.os.Binder;
import android.os.Build;
import android.os.Bundle;
import android.os.Debug;
import android.os.DropBoxManager;
import android.os.Environment;
import android.os.FileObserver;
import android.os.FileUtils;
import android.os.Handler;
import android.os.IBinder;
import android.os.IPermissionController;
import android.os.IRemoteCallback;
import android.os.IUserManager;
import android.os.Looper;
import android.os.Message;
import android.os.Parcel;
import android.os.ParcelFileDescriptor;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.SELinux;
import android.os.ServiceManager;
import android.os.StrictMode;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UpdateLock;
import android.os.UserHandle;
import android.provider.Settings;
import android.text.format.DateUtils;
import android.text.format.Time;
import android.util.AtomicFile;
import android.util.EventLog;
import android.util.Log;
import android.util.Pair;
import android.util.PrintWriterPrinter;
import android.util.Slog;
import android.util.SparseArray;
import android.util.TimeUtils;
import android.util.Xml;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;

public final class ActivityManagerService extends ActivityManagerNative
        implements Watchdog.Monitor, BatteryStatsImpl.BatteryCallback {
    private static final String USER_DATA_DIR = "/data/user/";
    static final String TAG = "ActivityManager";
    static final String TAG_MU = "ActivityManagerServiceMU";
    static final boolean DEBUG = false;
    static final boolean localLOGV = DEBUG;
    static final boolean DEBUG_BACKUP = localLOGV || false;
    static final boolean DEBUG_BROADCAST = localLOGV || false;
    static final boolean DEBUG_BROADCAST_LIGHT = DEBUG_BROADCAST || false;
    static final boolean DEBUG_BACKGROUND_BROADCAST = DEBUG_BROADCAST || false;
    static final boolean DEBUG_CLEANUP = localLOGV || false;
    static final boolean DEBUG_CONFIGURATION = localLOGV || false;
    static final boolean DEBUG_FOCUS = false;
    static final boolean DEBUG_IMMERSIVE = localLOGV || false;
    static final boolean DEBUG_MU = localLOGV || false;
    static final boolean DEBUG_OOM_ADJ = localLOGV || false;
    static final boolean DEBUG_PAUSE = localLOGV || false;
    static final boolean DEBUG_POWER = localLOGV || false;
    static final boolean DEBUG_POWER_QUICK = DEBUG_POWER || false;
    static final boolean DEBUG_PROCESS_OBSERVERS = localLOGV || false;
    static final boolean DEBUG_PROCESSES = localLOGV || false;
    static final boolean DEBUG_PROVIDER = localLOGV || false;
    static final boolean DEBUG_RESULTS = localLOGV || false;
    static final boolean DEBUG_SERVICE = localLOGV || false;
    static final boolean DEBUG_SERVICE_EXECUTING = localLOGV || false;
    static final boolean DEBUG_STACK = localLOGV || false;
    static final boolean DEBUG_SWITCH = localLOGV || false;
    static final boolean DEBUG_TASKS = localLOGV || false;
    static final boolean DEBUG_THUMBNAILS = localLOGV || false;
    static final boolean DEBUG_TRANSITION = localLOGV || false;
    static final boolean DEBUG_URI_PERMISSION = localLOGV || false;
    static final boolean DEBUG_USER_LEAVING = localLOGV || false;
    static final boolean DEBUG_VISBILITY = localLOGV || false;
    static final boolean DEBUG_PSS = localLOGV || false;
    static final boolean DEBUG_LOCKSCREEN = localLOGV || false;
    static final boolean VALIDATE_TOKENS = false;
    static final boolean SHOW_ACTIVITY_START_TIME = true;

    // Control over CPU and battery monitoring.
    static final long BATTERY_STATS_TIME = 30*60*1000;      // write battery stats every 30 minutes.
    static final boolean MONITOR_CPU_USAGE = true;
    static final long MONITOR_CPU_MIN_TIME = 5*1000;        // don't sample cpu less than every 5 seconds.
    static final long MONITOR_CPU_MAX_TIME = 0x0fffffff;    // wait possibly forever for next cpu sample.
    static final boolean MONITOR_THREAD_CPU_USAGE = false;

    // The flags that are set for all calls we make to the package manager.
    static final int STOCK_PM_FLAGS = PackageManager.GET_SHARED_LIBRARY_FILES;

    private static final String SYSTEM_DEBUGGABLE = "ro.debuggable";

    static final boolean IS_USER_BUILD = "user".equals(Build.TYPE);

    // Maximum number of recent tasks that we can remember.
    static final int MAX_RECENT_TASKS = ActivityManager.isLowRamDeviceStatic() ? 10 : 20;

    // Amount of time after a call to stopAppSwitches() during which we will
    // prevent further untrusted switches from happening.
    static final long APP_SWITCH_DELAY_TIME = 5*1000;

    // How long we wait for a launched process to attach to the activity manager
    // before we decide it's never going to come up for real.
    static final int PROC_START_TIMEOUT = 10*1000;

    // How long we wait for a launched process to attach to the activity manager
    // before we decide it's never going to come up for real, when the process was
    // started with a wrapper for instrumentation (such as Valgrind) because it
    // could take much longer than usual.
    static final int PROC_START_TIMEOUT_WITH_WRAPPER = 300*1000;

    // How long to wait after going idle before forcing apps to GC.
    static final int GC_TIMEOUT = 5*1000;

    // The minimum amount of time between successive GC requests for a process.
    static final int GC_MIN_INTERVAL = 60*1000;

    // The minimum amount of time between successive PSS requests for a process.
    static final int FULL_PSS_MIN_INTERVAL = 10*60*1000;

    // The minimum amount of time between successive PSS requests for a process
    // when the request is due to the memory state being lowered.
    static final int FULL_PSS_LOWERED_INTERVAL = 2*60*1000;

    // The rate at which we check for apps using excessive power -- 15 mins.
    static final int POWER_CHECK_DELAY = (DEBUG_POWER_QUICK ? 2 : 15) * 60*1000;

    // The minimum sample duration we will allow before deciding we have
    // enough data on wake locks to start killing things.
    static final int WAKE_LOCK_MIN_CHECK_DURATION = (DEBUG_POWER_QUICK ? 1 : 5) * 60*1000;

    // The minimum sample duration we will allow before deciding we have
    // enough data on CPU usage to start killing things.
    static final int CPU_MIN_CHECK_DURATION = (DEBUG_POWER_QUICK ? 1 : 5) * 60*1000;

    // How long we allow a receiver to run before giving up on it.
    static final int BROADCAST_FG_TIMEOUT = 10*1000;
    static final int BROADCAST_BG_TIMEOUT = 60*1000;

    // How long we wait until we timeout on key dispatching.
    static final int KEY_DISPATCHING_TIMEOUT = 5*1000;

    // How long we wait until we timeout on key dispatching during instrumentation.
    static final int INSTRUMENTATION_KEY_DISPATCHING_TIMEOUT = 60*1000;

    // Amount of time we wait for observers to handle a user switch before
    // giving up on them and unfreezing the screen.
    static final int USER_SWITCH_TIMEOUT = 2*1000;

    // Maximum number of users we allow to be running at a time.
    static final int MAX_RUNNING_USERS = 3;

    // How long to wait in getAssistContextExtras for the activity and foreground services
    // to respond with the result.
    static final int PENDING_ASSIST_EXTRAS_TIMEOUT = 500;

    // Maximum number of persisted Uri grants a package is allowed
    static final int MAX_PERSISTED_URI_GRANTS = 128;

    static final int MY_PID = Process.myPid();

    static final String[] EMPTY_STRING_ARRAY = new String[0];

    /** Run all ActivityStacks through this */
    ActivityStackSupervisor mStackSupervisor;

    public IntentFirewall mIntentFirewall;

    private final boolean mHeadless;

    // Whether we should show our dialogs (ANR, crash, etc) or just perform their
    // default actuion automatically.  Important for devices without direct input
    // devices.
    private boolean mShowDialogs = true;

    /**
     * Description of a request to start a new activity, which has been held
     * due to app switches being disabled.
     */
    static class PendingActivityLaunch {
        final ActivityRecord r;
        final ActivityRecord sourceRecord;
        final int startFlags;
        final ActivityStack stack;

        PendingActivityLaunch(ActivityRecord _r, ActivityRecord _sourceRecord,
                int _startFlags, ActivityStack _stack) {
            r = _r;
            sourceRecord = _sourceRecord;
            startFlags = _startFlags;
            stack = _stack;
        }
    }

    final ArrayList<PendingActivityLaunch> mPendingActivityLaunches
            = new ArrayList<PendingActivityLaunch>();

    BroadcastQueue mFgBroadcastQueue;
    BroadcastQueue mBgBroadcastQueue;
    // Convenient for easy iteration over the queues. Foreground is first
    // so that dispatch of foreground broadcasts gets precedence.
    final BroadcastQueue[] mBroadcastQueues = new BroadcastQueue[2];

    BroadcastQueue broadcastQueueForIntent(Intent intent) {
        final boolean isFg = (intent.getFlags() & Intent.FLAG_RECEIVER_FOREGROUND) != 0;
        if (DEBUG_BACKGROUND_BROADCAST) {
            Slog.i(TAG, "Broadcast intent " + intent + " on "
                    + (isFg ? "foreground" : "background")
                    + " queue");
        }
        return (isFg) ? mFgBroadcastQueue : mBgBroadcastQueue;
    }

    BroadcastRecord broadcastRecordForReceiverLocked(IBinder receiver) {
        for (BroadcastQueue queue : mBroadcastQueues) {
            BroadcastRecord r = queue.getMatchingOrderedReceiver(receiver);
            if (r != null) {
                return r;
            }
        }
        return null;
    }

    /**
     * Activity we have told the window manager to have key focus.
     */
    ActivityRecord mFocusedActivity = null;

    /**
     * List of intents that were used to start the most recent tasks.
     */
    private final ArrayList<TaskRecord> mRecentTasks = new ArrayList<TaskRecord>();

    public class PendingAssistExtras extends Binder implements Runnable {
        public final ActivityRecord activity;
        public boolean haveResult = false;
        public Bundle result = null;
        public PendingAssistExtras(ActivityRecord _activity) {
            activity = _activity;
        }
        @Override
        public void run() {
            Slog.w(TAG, "getAssistContextExtras failed: timeout retrieving from " + activity);
            synchronized (this) {
                haveResult = true;
                notifyAll();
            }
        }
    }

    final ArrayList<PendingAssistExtras> mPendingAssistExtras
            = new ArrayList<PendingAssistExtras>();

    /**
     * Process management.
     */
    final ProcessList mProcessList = new ProcessList();

    /**
     * All of the applications we currently have running organized by name.
     * The keys are strings of the application package name (as
     * returned by the package manager), and the keys are ApplicationRecord
     * objects.
     */
    final ProcessMap<ProcessRecord> mProcessNames = new ProcessMap<ProcessRecord>();

    /**
     * Tracking long-term execution of processes to look for abuse and other
     * bad app behavior.
     */
    final ProcessStatsService mProcessStats;

    /**
     * The currently running isolated processes.
     */
    final SparseArray<ProcessRecord> mIsolatedProcesses = new SparseArray<ProcessRecord>();

    /**
     * Counter for assigning isolated process uids, to avoid frequently reusing the
     * same ones.
     */
    int mNextIsolatedProcessUid = 0;

    /**
     * The currently running heavy-weight process, if any.
     */
    ProcessRecord mHeavyWeightProcess = null;

    /**
     * The last time that various processes have crashed.
     */
    final ProcessMap<Long> mProcessCrashTimes = new ProcessMap<Long>();

    /**
     * Set of applications that we consider to be bad, and will reject
     * incoming broadcasts from (which the user has no control over).
     * Processes are added to this set when they have crashed twice within
     * a minimum amount of time; they are removed from it when they are
     * later restarted (hopefully due to some user action).  The value is the
     * time it was added to the list.
     */
    final ProcessMap<Long> mBadProcesses = new ProcessMap<Long>();

    /**
     * All of the processes we currently have running organized by pid.
     * The keys are the pid running the application.
     *
     * <p>NOTE: This object is protected by its own lock, NOT the global
     * activity manager lock!
     */
    final SparseArray<ProcessRecord> mPidsSelfLocked = new SparseArray<ProcessRecord>();

    /**
     * All of the processes that have been forced to be foreground.  The key
     * is the pid of the caller who requested it (we hold a death
     * link on it).
     */
    abstract class ForegroundToken implements IBinder.DeathRecipient {
        int pid;
        IBinder token;
    }
    final SparseArray<ForegroundToken> mForegroundProcesses = new SparseArray<ForegroundToken>();

    /**
     * List of records for processes that someone had tried to start before the
     * system was ready.  We don't start them at that point, but ensure they
     * are started by the time booting is complete.
     */
    final ArrayList<ProcessRecord> mProcessesOnHold = new ArrayList<ProcessRecord>();

    /**
     * List of persistent applications that are in the process
     * of being started.
     */
    final ArrayList<ProcessRecord> mPersistentStartingProcesses = new ArrayList<ProcessRecord>();

    /**
     * Processes that are being forcibly torn down.
     */
    final ArrayList<ProcessRecord> mRemovedProcesses = new ArrayList<ProcessRecord>();

    /**
     * List of running applications, sorted by recent usage.
     * The first entry in the list is the least recently used.
     */
    final ArrayList<ProcessRecord> mLruProcesses = new ArrayList<ProcessRecord>();

    /**
     * Where in mLruProcesses that the processes hosting activities start.
     */
    int mLruProcessActivityStart = 0;

    /**
     * Where in mLruProcesses that the processes hosting services start.
     * This is after (lower index) than mLruProcessesActivityStart.
     */
    int mLruProcessServiceStart = 0;

    /**
     * List of processes that should gc as soon as things are idle.
     */
    final ArrayList<ProcessRecord> mProcessesToGc = new ArrayList<ProcessRecord>();

    /**
     * Processes we want to collect PSS data from.
     */
    final ArrayList<ProcessRecord> mPendingPssProcesses = new ArrayList<ProcessRecord>();

    /**
     * Last time we requested PSS data of all processes.
     */
    long mLastFullPssTime = SystemClock.uptimeMillis();

    /**
     * This is the process holding what we currently consider to be
     * the "home" activity.
     */
    ProcessRecord mHomeProcess;

    /**
     * This is the process holding the activity the user last visited that
     * is in a different process from the one they are currently in.
     */
    ProcessRecord mPreviousProcess;

    /**
     * The time at which the previous process was last visible.
     */
    long mPreviousProcessVisibleTime;

    /**
     * Which uses have been started, so are allowed to run code.
     */
    final SparseArray<UserStartedState> mStartedUsers = new SparseArray<UserStartedState>();

    /**
     * LRU list of history of current users.  Most recently current is at the end.
     */
    final ArrayList<Integer> mUserLru = new ArrayList<Integer>();

    /**
     * Constant array of the users that are currently started.
     */
    int[] mStartedUserArray = new int[] { 0 };

    /**
     * Registered observers of the user switching mechanics.
     */
    final RemoteCallbackList<IUserSwitchObserver> mUserSwitchObservers
            = new RemoteCallbackList<IUserSwitchObserver>();

    /**
     * Currently active user switch.
     */
    Object mCurUserSwitchCallback;

    /**
     * Packages that the user has asked to have run in screen size
     * compatibility mode instead of filling the screen.
     */
    final CompatModePackages mCompatModePackages;

    /**
     * Set of IntentSenderRecord objects that are currently active.
     */
    final HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>> mIntentSenderRecords
            = new HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>>();

    /**
     * Fingerprints (hashCode()) of stack traces that we've
     * already logged DropBox entries for.  Guarded by itself.  If
     * something (rogue user app) forces this over
     * MAX_DUP_SUPPRESSED_STACKS entries, the contents are cleared.
     */
    private final HashSet<Integer> mAlreadyLoggedViolatedStacks = new HashSet<Integer>();
    private static final int MAX_DUP_SUPPRESSED_STACKS = 5000;

    /**
     * Strict Mode background batched logging state.
     *
     * The string buffer is guarded by itself, and its lock is also
     * used to determine if another batched write is already
     * in-flight.
     */
    private final StringBuilder mStrictModeBuffer = new StringBuilder();

    /**
     * Keeps track of all IIntentReceivers that have been registered for
     * broadcasts.  Hash keys are the receiver IBinder, hash value is
     * a ReceiverList.
     */
    final HashMap<IBinder, ReceiverList> mRegisteredReceivers =
            new HashMap<IBinder, ReceiverList>();

    /**
     * Resolver for broadcast intents to registered receivers.
     * Holds BroadcastFilter (subclass of IntentFilter).
     */
    final IntentResolver<BroadcastFilter, BroadcastFilter> mReceiverResolver
            = new IntentResolver<BroadcastFilter, BroadcastFilter>() {
        @Override
        protected boolean allowFilterResult(
                BroadcastFilter filter, List<BroadcastFilter> dest) {
            IBinder target = filter.receiverList.receiver.asBinder();
            for (int i=dest.size()-1; i>=0; i--) {
                if (dest.get(i).receiverList.receiver.asBinder() == target) {
                    return false;
                }
            }
            return true;
        }

        @Override
        protected BroadcastFilter newResult(BroadcastFilter filter, int match, int userId) {
            if (userId == UserHandle.USER_ALL || filter.owningUserId == UserHandle.USER_ALL
                    || userId == filter.owningUserId) {
                return super.newResult(filter, match, userId);
            }
            return null;
        }

        @Override
        protected BroadcastFilter[] newArray(int size) {
            return new BroadcastFilter[size];
        }

        @Override
        protected boolean isPackageForFilter(String packageName, BroadcastFilter filter) {
            return packageName.equals(filter.packageName);
        }
    };

    /**
     * State of all active sticky broadcasts per user.  Keys are the action of the
     * sticky Intent, values are an ArrayList of all broadcasted intents with
     * that action (which should usually be one).  The SparseArray is keyed
     * by the user ID the sticky is for, and can include UserHandle.USER_ALL
     * for stickies that are sent to all users.
     */
    final SparseArray<ArrayMap<String, ArrayList<Intent>>> mStickyBroadcasts =
            new SparseArray<ArrayMap<String, ArrayList<Intent>>>();

    final ActiveServices mServices;

    /**
     * Backup/restore process management
     */
    String mBackupAppName = null;
    BackupRecord mBackupTarget = null;

    /**
     * List of PendingThumbnailsRecord objects of clients who are still
     * waiting to receive all of the thumbnails for a task.
     */
    final ArrayList<PendingThumbnailsRecord> mPendingThumbnails =
            new ArrayList<PendingThumbnailsRecord>();

    final ProviderMap mProviderMap;

    /**
     * List of content providers who have clients waiting for them.  The
     * application is currently being launched and the provider will be
     * removed from this list once it is published.
     */
    final ArrayList<ContentProviderRecord> mLaunchingProviders
            = new ArrayList<ContentProviderRecord>();

    /**
     * File storing persisted {@link #mGrantedUriPermissions}.
     */
    private final AtomicFile mGrantFile;

    /** XML constants used in {@link #mGrantFile} */
    private static final String TAG_URI_GRANTS = "uri-grants";
    private static final String TAG_URI_GRANT = "uri-grant";
    private static final String ATTR_USER_HANDLE = "userHandle";
    private static final String ATTR_SOURCE_PKG = "sourcePkg";
    private static final String ATTR_TARGET_PKG = "targetPkg";
    private static final String ATTR_URI = "uri";
    private static final String ATTR_MODE_FLAGS = "modeFlags";
    private static final String ATTR_CREATED_TIME = "createdTime";

    /**
     * Global set of specific {@link Uri} permissions that have been granted.
     * This optimized lookup structure maps from {@link UriPermission#targetUid}
     * to {@link UriPermission#uri} to {@link UriPermission}.
     */
    @GuardedBy("this")
    private final SparseArray<ArrayMap<Uri, UriPermission>>
            mGrantedUriPermissions = new SparseArray<ArrayMap<Uri, UriPermission>>();

    CoreSettingsObserver mCoreSettingsObserver;

    /**
     * Thread-local storage used to carry caller permissions over through
     * indirect content-provider access.
     */
    private class Identity {
        public int pid;
        public int uid;

        Identity(int _pid, int _uid) {
            pid = _pid;
            uid = _uid;
        }
    }

    private static ThreadLocal<Identity> sCallerIdentity = new ThreadLocal<Identity>();

    /**
     * All information we have collected about the runtime performance of
     * any user id that can impact battery performance.
     */
    final BatteryStatsService mBatteryStatsService;

    /**
     * Information about component usage
     */
    final UsageStatsService mUsageStatsService;

    /**
     * Information about and control over application operations
     */
    final AppOpsService mAppOpsService;

    /**
     * Current configuration information.  HistoryRecord objects are given
     * a reference to this object to indicate which configuration they are
     * currently running in, so this object must be kept immutable.
     */
    Configuration mConfiguration = new Configuration();

    /**
     * Current sequencing integer of the configuration, for skipping old
     * configurations.
     */
    int mConfigurationSeq = 0;

    /**
     * Hardware-reported OpenGLES version.
     */
    final int GL_ES_VERSION;

    /**
     * List of initialization arguments to pass to all processes when binding applications to them.
     * For example, references to the commonly used services.
     */
    HashMap<String, IBinder> mAppBindArgs;

    /**
     * Temporary to avoid allocations.  Protected by main lock.
     */
    final StringBuilder mStringBuilder = new StringBuilder(256);

    /**
     * Used to control how we initialize the service.
     */
    boolean mStartRunning = false;
    ComponentName mTopComponent;
    String mTopAction;
    String mTopData;
    boolean mProcessesReady = false;
    boolean mSystemReady = false;
    boolean mBooting = false;
    boolean mWaitingUpdate = false;
    boolean mDidUpdate = false;
    boolean mOnBattery = false;
    boolean mLaunchWarningShown = false;

    Context mContext;

    int mFactoryTest;

    boolean mCheckedForSetup;

    /**
     * The time at which we will allow normal application switches again,
     * after a call to {@link #stopAppSwitches()}.
     */
    long mAppSwitchesAllowedTime;

    /**
     * This is set to true after the first switch after mAppSwitchesAllowedTime
     * is set; any switches after that will clear the time.
     */
    boolean mDidAppSwitch;

    /**
     * Last time (in realtime) at which we checked for power usage.
     */
    long mLastPowerCheckRealtime;

    /**
     * Last time (in uptime) at which we checked for power usage.
     */
    long mLastPowerCheckUptime;

    /**
     * Set while we are wanting to sleep, to prevent any
     * activities from being started/resumed.
     */
    boolean mSleeping = false;

    /**
     * State of external calls telling us if the device is asleep.
     */
    boolean mWentToSleep = false;

    /**
     * State of external call telling us if the lock screen is shown.
     */
    boolean mLockScreenShown = false;

    /**
     * Set if we are shutting down the system, similar to sleeping.
     */
    boolean mShuttingDown = false;

    /**
     * Current sequence id for oom_adj computation traversal.
     */
    int mAdjSeq = 0;

    /**
     * Current sequence id for process LRU updating.
     */
    int mLruSeq = 0;

    /**
     * Keep track of the non-cached/empty process we last found, to help
     * determine how to distribute cached/empty processes next time.
     */
    int mNumNonCachedProcs = 0;

    /**
     * Keep track of the number of cached hidden procs, to balance oom adj
     * distribution between those and empty procs.
     */
    int mNumCachedHiddenProcs = 0;

    /**
     * Keep track of the number of service processes we last found, to
     * determine on the next iteration which should be B services.
     */
    int mNumServiceProcs = 0;
    int mNewNumAServiceProcs = 0;
    int mNewNumServiceProcs = 0;

    /**
     * Allow the current computed overall memory level of the system to go down?
     * This is set to false when we are killing processes for reasons other than
     * memory management, so that the now smaller process list will not be taken as
     * an indication that memory is tighter.
     */
    boolean mAllowLowerMemLevel = false;

    /**
     * The last computed memory level, for holding when we are in a state that
     * processes are going away for other reasons.
     */
    int mLastMemoryLevel = ProcessStats.ADJ_MEM_FACTOR_NORMAL;

    /**
     * The last total number of process we have, to determine if changes actually look
     * like a shrinking number of process due to lower RAM.
     */
    int mLastNumProcesses;

    /**
     * The uptime of the last time we performed idle maintenance.
     */
    long mLastIdleTime = SystemClock.uptimeMillis();

    /**
     * Total time spent with RAM that has been added in the past since the last idle time.
     */
    long mLowRamTimeSinceLastIdle = 0;

    /**
     * If RAM is currently low, when that horrible situatin started.
     */
    long mLowRamStartTime = 0;

    /**
     * This is set if we had to do a delayed dexopt of an app before launching
     * it, to increasing the ANR timeouts in that case.
     */
    boolean mDidDexOpt;

    String mDebugApp = null;
    boolean mWaitForDebugger = false;
    boolean mDebugTransient = false;
    String mOrigDebugApp = null;
    boolean mOrigWaitForDebugger = false;
    boolean mAlwaysFinishActivities = false;
    IActivityController mController = null;
    String mProfileApp = null;
    ProcessRecord mProfileProc = null;
    String mProfileFile;
    ParcelFileDescriptor mProfileFd;
    int mProfileType = 0;
    boolean mAutoStopProfiler = false;
    String mOpenGlTraceApp = null;

    static class ProcessChangeItem {
        static final int CHANGE_ACTIVITIES = 1<<0;
        static final int CHANGE_IMPORTANCE= 1<<1;
        int changes;
        int uid;
        int pid;
        int importance;
        boolean foregroundActivities;
    }

    final RemoteCallbackList<IProcessObserver> mProcessObservers
            = new RemoteCallbackList<IProcessObserver>();
    ProcessChangeItem[] mActiveProcessChanges = new ProcessChangeItem[5];

    final ArrayList<ProcessChangeItem> mPendingProcessChanges
            = new ArrayList<ProcessChangeItem>();
    final ArrayList<ProcessChangeItem> mAvailProcessChanges
            = new ArrayList<ProcessChangeItem>();

    /**
     * Runtime CPU use collection thread.  This object's lock is used to
     * protect all related state.
     */
    final Thread mProcessCpuThread;

    /**
     * Used to collect process stats when showing not responding dialog.
     * Protected by mProcessCpuThread.
     */
    final ProcessCpuTracker mProcessCpuTracker = new ProcessCpuTracker(
            MONITOR_THREAD_CPU_USAGE);
    final AtomicLong mLastCpuTime = new AtomicLong(0);
    final AtomicBoolean mProcessCpuMutexFree = new AtomicBoolean(true);

    long mLastWriteTime = 0;

    /**
     * Used to retain an update lock when the foreground activity is in
     * immersive mode.
     */
    final UpdateLock mUpdateLock = new UpdateLock("immersive");

    /**
     * Set to true after the system has finished booting.
     */
    boolean mBooted = false;

    int mProcessLimit = ProcessList.MAX_CACHED_APPS;
    int mProcessLimitOverride = -1;

    WindowManagerService mWindowManager;

    static ActivityManagerService mSelf;
    static ActivityThread mSystemThread;

    int mCurrentUserId = 0;
    private UserManagerService mUserManager;

    private final class AppDeathRecipient implements IBinder.DeathRecipient {
        final ProcessRecord mApp;
        final int mPid;
        final IApplicationThread mAppThread;

        AppDeathRecipient(ProcessRecord app, int pid,
                IApplicationThread thread) {
            if (localLOGV) Slog.v(
                TAG, "New death recipient " + this
                + " for thread " + thread.asBinder());
            mApp = app;
            mPid = pid;
            mAppThread = thread;
        }

        @Override
        public void binderDied() {
            if (localLOGV) Slog.v(
                TAG, "Death received in " + this
                + " for thread " + mAppThread.asBinder());
            synchronized(ActivityManagerService.this) {
                appDiedLocked(mApp, mPid, mAppThread);
            }
        }
    }

    static final int SHOW_ERROR_MSG = 1;
    static final int SHOW_NOT_RESPONDING_MSG = 2;
    static final int SHOW_FACTORY_ERROR_MSG = 3;
    static final int UPDATE_CONFIGURATION_MSG = 4;
    static final int GC_BACKGROUND_PROCESSES_MSG = 5;
    static final int WAIT_FOR_DEBUGGER_MSG = 6;
    static final int SERVICE_TIMEOUT_MSG = 12;
    static final int UPDATE_TIME_ZONE = 13;
    static final int SHOW_UID_ERROR_MSG = 14;
    static final int IM_FEELING_LUCKY_MSG = 15;
    static final int PROC_START_TIMEOUT_MSG = 20;
    static final int DO_PENDING_ACTIVITY_LAUNCHES_MSG = 21;
    static final int KILL_APPLICATION_MSG = 22;
    static final int FINALIZE_PENDING_INTENT_MSG = 23;
    static final int POST_HEAVY_NOTIFICATION_MSG = 24;
    static final int CANCEL_HEAVY_NOTIFICATION_MSG = 25;
    static final int SHOW_STRICT_MODE_VIOLATION_MSG = 26;
    static final int CHECK_EXCESSIVE_WAKE_LOCKS_MSG = 27;
    static final int CLEAR_DNS_CACHE_MSG = 28;
    static final int UPDATE_HTTP_PROXY_MSG = 29;
    static final int SHOW_COMPAT_MODE_DIALOG_MSG = 30;
    static final int DISPATCH_PROCESSES_CHANGED = 31;
    static final int DISPATCH_PROCESS_DIED = 32;
    static final int REPORT_MEM_USAGE_MSG = 33;
    static final int REPORT_USER_SWITCH_MSG = 34;
    static final int CONTINUE_USER_SWITCH_MSG = 35;
    static final int USER_SWITCH_TIMEOUT_MSG = 36;
    static final int IMMERSIVE_MODE_LOCK_MSG = 37;
    static final int PERSIST_URI_GRANTS_MSG = 38;
    static final int REQUEST_ALL_PSS_MSG = 39;

    static final int FIRST_ACTIVITY_STACK_MSG = 100;
    static final int FIRST_BROADCAST_QUEUE_MSG = 200;
    static final int FIRST_COMPAT_MODE_MSG = 300;
    static final int FIRST_SUPERVISOR_STACK_MSG = 100;

    AlertDialog mUidAlert;
    CompatModeDialog mCompatModeDialog;
    long mLastMemUsageReportTime = 0;

    /**
     * Flag whether the current user is a "monkey", i.e. whether
     * the UI is driven by a UI automation tool.
     */
    private boolean mUserIsMonkey;

    final Handler mHandler = new Handler() {
        //public Handler() {
        //    if (localLOGV) Slog.v(TAG, "Handler started!");
        //}

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case SHOW_ERROR_MSG: {
                HashMap<String, Object> data = (HashMap<String, Object>) msg.obj;
                boolean showBackground = Settings.Secure.getInt(mContext.getContentResolver(),
                        Settings.Secure.ANR_SHOW_BACKGROUND, 0) != 0;
                synchronized (ActivityManagerService.this) {
                    ProcessRecord proc = (ProcessRecord)data.get("app");
                    AppErrorResult res = (AppErrorResult) data.get("result");
                    if (proc != null && proc.crashDialog != null) {
                        Slog.e(TAG, "App already has crash dialog: " + proc);
                        if (res != null) {
                            res.set(0);
                        }
                        return;
                    }
                    if (!showBackground && UserHandle.getAppId(proc.uid)
                            >= Process.FIRST_APPLICATION_UID && proc.userId != mCurrentUserId
                            && proc.pid != MY_PID) {
                        Slog.w(TAG, "Skipping crash dialog of " + proc + ": background");
                        if (res != null) {
                            res.set(0);
                        }
                        return;
                    }
                    if (mShowDialogs && !mSleeping && !mShuttingDown) {
                        Dialog d = new AppErrorDialog(mContext,
                                ActivityManagerService.this, res, proc);
                        d.show();
                        proc.crashDialog = d;
                    } else {
                        // The device is asleep, so just pretend that the user
                        // saw a crash dialog and hit "force quit".
                        if (res != null) {
                            res.set(0);
                        }
                    }
                }

                ensureBootCompleted();
            } break;
            case SHOW_NOT_RESPONDING_MSG: {
                synchronized (ActivityManagerService.this) {
                    HashMap<String, Object> data = (HashMap<String, Object>) msg.obj;
                    ProcessRecord proc = (ProcessRecord)data.get("app");
                    if (proc != null && proc.anrDialog != null) {
                        Slog.e(TAG, "App already has anr dialog: " + proc);
                        return;
                    }

                    Intent intent = new Intent("android.intent.action.ANR");
                    if (!mProcessesReady) {
                        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
                                | Intent.FLAG_RECEIVER_FOREGROUND);
                    }
                    broadcastIntentLocked(null, null, intent,
                            null, null, 0, null, null, null, AppOpsManager.OP_NONE,
                            false, false, MY_PID, Process.SYSTEM_UID, 0 /* TODO: Verify */);

                    if (mShowDialogs) {
                        Dialog d = new AppNotRespondingDialog(ActivityManagerService.this,
                                mContext, proc, (ActivityRecord)data.get("activity"),
                                msg.arg1 != 0);
                        d.show();
                        proc.anrDialog = d;
                    } else {
                        // Just kill the app if there is no dialog to be shown.
                        killAppAtUsersRequest(proc, null);
                    }
                }

                ensureBootCompleted();
            } break;
            case SHOW_STRICT_MODE_VIOLATION_MSG: {
                HashMap<String, Object> data = (HashMap<String, Object>) msg.obj;
                synchronized (ActivityManagerService.this) {
                    ProcessRecord proc = (ProcessRecord) data.get("app");
                    if (proc == null) {
                        Slog.e(TAG, "App not found when showing strict mode dialog.");
                        break;
                    }
                    if (proc.crashDialog != null) {
                        Slog.e(TAG, "App already has strict mode dialog: " + proc);
                        return;
                    }
                    AppErrorResult res = (AppErrorResult) data.get("result");
                    if (mShowDialogs && !mSleeping && !mShuttingDown) {
                        Dialog d = new StrictModeViolationDialog(mContext,
                                ActivityManagerService.this, res, proc);
                        d.show();
                        proc.crashDialog = d;
                    } else {
                        // The device is asleep, so just pretend that the user
                        // saw a crash dialog and hit "force quit".
                        res.set(0);
                    }
                }
                ensureBootCompleted();
            } break;
            case SHOW_FACTORY_ERROR_MSG: {
                Dialog d = new FactoryErrorDialog(
                    mContext, msg.getData().getCharSequence("msg"));
                d.show();
                ensureBootCompleted();
            } break;
            case UPDATE_CONFIGURATION_MSG: {
                final ContentResolver resolver = mContext.getContentResolver();
                Settings.System.putConfiguration(resolver, (Configuration)msg.obj);
            } break;
            case GC_BACKGROUND_PROCESSES_MSG: {
                synchronized (ActivityManagerService.this) {
                    performAppGcsIfAppropriateLocked();
                }
            } break;
            case WAIT_FOR_DEBUGGER_MSG: {
                synchronized (ActivityManagerService.this) {
                    ProcessRecord app = (ProcessRecord)msg.obj;
                    if (msg.arg1 != 0) {
                        if (!app.waitedForDebugger) {
                            Dialog d = new AppWaitingForDebuggerDialog(
                                    ActivityManagerService.this,
                                    mContext, app);
                            app.waitDialog = d;
                            app.waitedForDebugger = true;
                            d.show();
                        }
                    } else {
                        if (app.waitDialog != null) {
                            app.waitDialog.dismiss();
                            app.waitDialog = null;
                        }
                    }
                }
            } break;
            case SERVICE_TIMEOUT_MSG: {
                if (mDidDexOpt) {
                    mDidDexOpt = false;
                    Message nmsg = mHandler.obtainMessage(SERVICE_TIMEOUT_MSG);
                    nmsg.obj = msg.obj;
                    mHandler.sendMessageDelayed(nmsg, ActiveServices.SERVICE_TIMEOUT);
                    return;
                }
                mServices.serviceTimeout((ProcessRecord)msg.obj);
            } break;
            case UPDATE_TIME_ZONE: {
                synchronized (ActivityManagerService.this) {
                    for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                        ProcessRecord r = mLruProcesses.get(i);
                        if (r.thread != null) {
                            try {
                                r.thread.updateTimeZone();
                            } catch (RemoteException ex) {
                                Slog.w(TAG, "Failed to update time zone for: " + r.info.processName);
                            }
                        }
                    }
                }
            } break;
            case CLEAR_DNS_CACHE_MSG: {
                synchronized (ActivityManagerService.this) {
                    for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                        ProcessRecord r = mLruProcesses.get(i);
                        if (r.thread != null) {
                            try {
                                r.thread.clearDnsCache();
                            } catch (RemoteException ex) {
                                Slog.w(TAG, "Failed to clear dns cache for: " + r.info.processName);
                            }
                        }
                    }
                }
            } break;
            case UPDATE_HTTP_PROXY_MSG: {
                ProxyProperties proxy = (ProxyProperties)msg.obj;
                String host = "";
                String port = "";
                String exclList = "";
                String pacFileUrl = null;
                if (proxy != null) {
                    host = proxy.getHost();
                    port = Integer.toString(proxy.getPort());
                    exclList = proxy.getExclusionList();
                    pacFileUrl = proxy.getPacFileUrl();
                }
                synchronized (ActivityManagerService.this) {
                    for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
                        ProcessRecord r = mLruProcesses.get(i);
                        if (r.thread != null) {
                            try {
                                r.thread.setHttpProxy(host, port, exclList, pacFileUrl);
                            } catch (RemoteException ex) {
                                Slog.w(TAG, "Failed to update http proxy for: " +
                                        r.info.processName);
                            }
                        }
                    }
                }
            } break;
            case SHOW_UID_ERROR_MSG: {
                String title = "System UIDs Inconsistent";
                String text = "UIDs on the system are inconsistent, you need to wipe your"
                        + " data partition or your device will be unstable.";
                Log.e(TAG, title + ": " + text);
                if (mShowDialogs) {
                    // XXX This is a temporary dialog, no need to localize.
                    AlertDialog d = new BaseErrorDialog(mContext);
                    d.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR);
                    d.setCancelable(false);
                    d.setTitle(title);
                    d.setMessage(text);
                    d.setButton(DialogInterface.BUTTON_POSITIVE, "I'm Feeling Lucky",
                            mHandler.obtainMessage(IM_FEELING_LUCKY_MSG));
                    mUidAlert = d;
                    d.show();
                }
            } break;
            case IM_FEELING_LUCKY_MSG: {
                if (mUidAlert != null) {
                    mUidAlert.dismiss();
                    mUidAlert = null;
                }
            } break;
            case PROC_START_TIMEOUT_MSG: {
                if (mDidDexOpt) {
                    mDidDexOpt = false;
                    Message nmsg = mHandler.obtainMessage(PROC_START_TIMEOUT_MSG);
                    nmsg.obj = msg.obj;
                    mHandler.sendMessageDelayed(nmsg, PROC_START_TIMEOUT);
                    return;
                }
                ProcessRecord app = (ProcessRecord)msg.obj;
                synchronized (ActivityManagerService.this) {
                    processStartTimedOutLocked(app);
                }
            } break;
            case DO_PENDING_ACTIVITY_LAUNCHES_MSG: {
                synchronized (ActivityManagerService.this) {
                    doPendingActivityLaunchesLocked(true);
                }
            } break;
            case KILL_APPLICATION_MSG: {
                synchronized (ActivityManagerService.this) {
                    int appid = msg.arg1;
                    boolean restart = (msg.arg2 == 1);
                    Bundle bundle = (Bundle)msg.obj;
                    String pkg = bundle.getString("pkg");
                    String reason = bundle.getString("reason");
                    forceStopPackageLocked(pkg, appid, restart, false, true, false,
                            UserHandle.USER_ALL, reason);
                }
            } break;
            case FINALIZE_PENDING_INTENT_MSG: {
                ((PendingIntentRecord)msg.obj).completeFinalize();
            } break;
            case POST_HEAVY_NOTIFICATION_MSG: {
                INotificationManager inm = NotificationManager.getService();
                if (inm == null) {
                    return;
                }

                ActivityRecord root = (ActivityRecord)msg.obj;
                ProcessRecord process = root.app;
                if (process == null) {
                    return;
                }

                try {
                    Context context = mContext.createPackageContext(process.info.packageName, 0);
                    String text = mContext.getString(R.string.heavy_weight_notification,
                            context.getApplicationInfo().loadLabel(context.getPackageManager()));
                    Notification notification = new Notification();
                    notification.icon = com.android.internal.R.drawable.stat_sys_adb; //context.getApplicationInfo().icon;
                    notification.when = 0;
                    notification.flags = Notification.FLAG_ONGOING_EVENT;
                    notification.tickerText = text;
                    notification.defaults = 0; // please be quiet
                    notification.sound = null;
                    notification.vibrate = null;
                    notification.setLatestEventInfo(context, text,
                            mContext.getText(R.string.heavy_weight_notification_detail),
                            PendingIntent.getActivityAsUser(mContext, 0, root.intent,
                                    PendingIntent.FLAG_CANCEL_CURRENT, null,
                                    new UserHandle(root.userId)));

                    try {
                        int[] outId = new int[1];
                        inm.enqueueNotificationWithTag("android", "android", null,
                                R.string.heavy_weight_notification,
                                notification, outId, root.userId);
                    } catch (RuntimeException e) {
                        Slog.w(ActivityManagerService.TAG,
                                "Error showing notification for heavy-weight app", e);
                    } catch (RemoteException e) {
                    }
                } catch (NameNotFoundException e) {
                    Slog.w(TAG, "Unable to create context for heavy notification", e);
                }
            } break;
            case CANCEL_HEAVY_NOTIFICATION_MSG: {
                INotificationManager inm = NotificationManager.getService();
                if (inm == null) {
                    return;
                }
                try {
                    inm.cancelNotificationWithTag("android", null,
                            R.string.heavy_weight_notification,  msg.arg1);
                } catch (RuntimeException e) {
                    Slog.w(ActivityManagerService.TAG,
                            "Error canceling notification for service", e);
                } catch (RemoteException e) {
                }
            } break;
            case CHECK_EXCESSIVE_WAKE_LOCKS_MSG: {
                synchronized (ActivityManagerService.this) {
                    checkExcessivePowerUsageLocked(true);
                    removeMessages(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                    Message nmsg = obtainMessage(CHECK_EXCESSIVE_WAKE_LOCKS_MSG);
                    sendMessageDelayed(nmsg, POWER_CHECK_DELAY);
                }
            } break;
            case SHOW_COMPAT_MODE_DIALOG_MSG: {
                synchronized (ActivityManagerService.this) {
                    ActivityRecord ar = (ActivityRecord)msg.obj;
                    if (mCompatModeDialog != null) {
                        if (mCompatModeDialog.mAppInfo.packageName.equals(
                                ar.info.applicationInfo.packageName)) {
                            return;
                        }
                        mCompatModeDialog.dismiss();
                        mCompatModeDialog = null;
                    }
                    if (ar != null && false) {
                        if (mCompatModePackages.getPackageAskCompatModeLocked(
                                ar.packageName)) {
                            int mode = mCompatModePackages.computeCompatModeLocked(
                                    ar.info.applicationInfo);
                            if (mode == ActivityManager.COMPAT_MODE_DISABLED
                                    || mode == ActivityManager.COMPAT_MODE_ENABLED) {
                                mCompatModeDialog = new CompatModeDialog(
                                        ActivityManagerService.this, mContext,
                                        ar.info.applicationInfo);
                                mCompatModeDialog.show();
                            }
                        }
                    }
                }
                break;
            }
            case DISPATCH_PROCESSES_CHANGED: {
                dispatchProcessesChanged();
                break;
            }
            case DISPATCH_PROCESS_DIED: {
                final int pid = msg.arg1;
                final int uid = msg.arg2;
                dispatchProcessDied(pid, uid);
                break;
            }
            case REPORT_MEM_USAGE_MSG: {
                final ArrayList<ProcessMemInfo> memInfos = (ArrayList<ProcessMemInfo>)msg.obj;
                Thread thread = new Thread() {
                    @Override public void run() {