Dianne Hackborn | 55280a9 | 2009-05-07 15:53:46 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2008 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 | |
| 17 | |
| 18 | package com.android.internal.app; |
| 19 | |
| 20 | import android.app.ActivityManagerNative; |
| 21 | import android.app.IActivityManager; |
| 22 | import android.app.ProgressDialog; |
| 23 | import android.app.AlertDialog; |
| 24 | import android.bluetooth.BluetoothDevice; |
| 25 | import android.bluetooth.IBluetoothDevice; |
| 26 | import android.content.BroadcastReceiver; |
| 27 | import android.content.Context; |
| 28 | import android.content.DialogInterface; |
| 29 | import android.content.Intent; |
| 30 | import android.os.Handler; |
| 31 | import android.os.RemoteException; |
| 32 | import android.os.Power; |
| 33 | import android.os.ServiceManager; |
| 34 | import android.os.SystemClock; |
| 35 | import com.android.internal.telephony.ITelephony; |
| 36 | import android.util.Log; |
| 37 | import android.view.WindowManager; |
| 38 | |
| 39 | public final class ShutdownThread extends Thread { |
| 40 | // constants |
| 41 | private static final String TAG = "ShutdownThread"; |
| 42 | private static final int MAX_NUM_PHONE_STATE_READS = 16; |
| 43 | private static final int PHONE_STATE_POLL_SLEEP_MSEC = 500; |
| 44 | // maximum time we wait for the shutdown broadcast before going on. |
| 45 | private static final int MAX_BROADCAST_TIME = 10*1000; |
| 46 | |
| 47 | // state tracking |
| 48 | private static Object sIsStartedGuard = new Object(); |
| 49 | private static boolean sIsStarted = false; |
| 50 | |
| 51 | // static instance of this thread |
| 52 | private static final ShutdownThread sInstance = new ShutdownThread(); |
| 53 | |
| 54 | private final Object mBroadcastDoneSync = new Object(); |
| 55 | private boolean mBroadcastDone; |
| 56 | private Context mContext; |
| 57 | private Handler mHandler; |
| 58 | |
| 59 | private ShutdownThread() { |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Request a clean shutdown, waiting for subsystems to clean up their |
| 64 | * state etc. Must be called from a Looper thread in which its UI |
| 65 | * is shown. |
| 66 | * |
| 67 | * @param context Context used to display the shutdown progress dialog. |
| 68 | */ |
| 69 | public static void shutdown(final Context context, boolean confirm) { |
| 70 | // ensure that only one thread is trying to power down. |
| 71 | // any additional calls are just returned |
| 72 | synchronized (sIsStartedGuard){ |
| 73 | if (sIsStarted) { |
| 74 | Log.d(TAG, "Request to shutdown already running, returning."); |
| 75 | return; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | Log.d(TAG, "Notifying thread to start radio shutdown"); |
| 80 | |
| 81 | if (confirm) { |
| 82 | final AlertDialog dialog = new AlertDialog.Builder(context) |
| 83 | .setIcon(android.R.drawable.ic_dialog_alert) |
| 84 | .setTitle(com.android.internal.R.string.power_off) |
| 85 | .setMessage(com.android.internal.R.string.shutdown_confirm) |
| 86 | .setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() { |
| 87 | public void onClick(DialogInterface dialog, int which) { |
| 88 | beginShutdownSequence(context); |
| 89 | } |
| 90 | }) |
| 91 | .setNegativeButton(com.android.internal.R.string.no, null) |
| 92 | .create(); |
| 93 | dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); |
| 94 | dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND); |
| 95 | dialog.show(); |
| 96 | } else { |
| 97 | beginShutdownSequence(context); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | private static void beginShutdownSequence(Context context) { |
| 102 | synchronized (sIsStartedGuard) { |
| 103 | sIsStarted = true; |
| 104 | } |
| 105 | |
| 106 | // throw up an indeterminate system dialog to indicate radio is |
| 107 | // shutting down. |
| 108 | ProgressDialog pd = new ProgressDialog(context); |
| 109 | pd.setTitle(context.getText(com.android.internal.R.string.power_off)); |
| 110 | pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress)); |
| 111 | pd.setIndeterminate(true); |
| 112 | pd.setCancelable(false); |
| 113 | pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); |
| 114 | pd.getWindow().addFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND); |
| 115 | |
| 116 | pd.show(); |
| 117 | |
| 118 | // start the thread that initiates shutdown |
| 119 | sInstance.mContext = context; |
| 120 | sInstance.mHandler = new Handler() { |
| 121 | }; |
| 122 | sInstance.start(); |
| 123 | } |
| 124 | |
| 125 | void broadcastDone() { |
| 126 | synchronized (mBroadcastDoneSync) { |
| 127 | mBroadcastDone = true; |
| 128 | mBroadcastDoneSync.notifyAll(); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Makes sure we handle the shutdown gracefully. |
| 134 | * Shuts off power regardless of radio and bluetooth state if the alloted time has passed. |
| 135 | */ |
| 136 | public void run() { |
| 137 | boolean bluetoothOff; |
| 138 | boolean radioOff; |
| 139 | |
| 140 | BroadcastReceiver br = new BroadcastReceiver() { |
| 141 | @Override public void onReceive(Context context, Intent intent) { |
| 142 | // We don't allow apps to cancel this, so ignore the result. |
| 143 | broadcastDone(); |
| 144 | } |
| 145 | }; |
| 146 | |
| 147 | Log.i(TAG, "Sending shutdown broadcast..."); |
| 148 | |
| 149 | // First send the high-level shut down broadcast. |
| 150 | mBroadcastDone = false; |
| 151 | mContext.sendOrderedBroadcast(new Intent(Intent.ACTION_SHUTDOWN), null, |
| 152 | br, mHandler, 0, null, null); |
| 153 | |
| 154 | final long endTime = System.currentTimeMillis() + MAX_BROADCAST_TIME; |
| 155 | synchronized (mBroadcastDoneSync) { |
| 156 | while (!mBroadcastDone) { |
| 157 | long delay = endTime - System.currentTimeMillis(); |
| 158 | if (delay <= 0) { |
| 159 | Log.w(TAG, "Shutdown broadcast timed out"); |
| 160 | break; |
| 161 | } |
| 162 | try { |
| 163 | mBroadcastDoneSync.wait(delay); |
| 164 | } catch (InterruptedException e) { |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | Log.i(TAG, "Shutting down activity manager..."); |
| 170 | |
| 171 | final IActivityManager am = |
| 172 | ActivityManagerNative.asInterface(ServiceManager.checkService("activity")); |
| 173 | if (am != null) { |
| 174 | try { |
| 175 | am.shutdown(MAX_BROADCAST_TIME); |
| 176 | } catch (RemoteException e) { |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | final ITelephony phone = |
| 181 | ITelephony.Stub.asInterface(ServiceManager.checkService("phone")); |
| 182 | final IBluetoothDevice bluetooth = |
| 183 | IBluetoothDevice.Stub.asInterface(ServiceManager.checkService( |
| 184 | Context.BLUETOOTH_SERVICE)); |
| 185 | |
| 186 | try { |
| 187 | bluetoothOff = bluetooth == null || |
| 188 | bluetooth.getBluetoothState() == BluetoothDevice.BLUETOOTH_STATE_OFF; |
| 189 | if (!bluetoothOff) { |
| 190 | Log.w(TAG, "Disabling Bluetooth..."); |
| 191 | bluetooth.disable(false); // disable but don't persist new state |
| 192 | } |
| 193 | } catch (RemoteException ex) { |
| 194 | Log.e(TAG, "RemoteException during bluetooth shutdown", ex); |
| 195 | bluetoothOff = true; |
| 196 | } |
| 197 | |
| 198 | try { |
| 199 | radioOff = phone == null || !phone.isRadioOn(); |
| 200 | if (!radioOff) { |
| 201 | Log.w(TAG, "Turning off radio..."); |
| 202 | phone.setRadio(false); |
| 203 | } |
| 204 | } catch (RemoteException ex) { |
| 205 | Log.e(TAG, "RemoteException during radio shutdown", ex); |
| 206 | radioOff = true; |
| 207 | } |
| 208 | |
| 209 | Log.i(TAG, "Waiting for Bluetooth and Radio..."); |
| 210 | |
| 211 | // Wait a max of 32 seconds for clean shutdown |
| 212 | for (int i = 0; i < MAX_NUM_PHONE_STATE_READS; i++) { |
| 213 | if (!bluetoothOff) { |
| 214 | try { |
| 215 | bluetoothOff = |
| 216 | bluetooth.getBluetoothState() == BluetoothDevice.BLUETOOTH_STATE_OFF; |
| 217 | } catch (RemoteException ex) { |
| 218 | Log.e(TAG, "RemoteException during bluetooth shutdown", ex); |
| 219 | bluetoothOff = true; |
| 220 | } |
| 221 | } |
| 222 | if (!radioOff) { |
| 223 | try { |
| 224 | radioOff = !phone.isRadioOn(); |
| 225 | } catch (RemoteException ex) { |
| 226 | Log.e(TAG, "RemoteException during radio shutdown", ex); |
| 227 | radioOff = true; |
| 228 | } |
| 229 | } |
| 230 | if (radioOff && bluetoothOff) { |
| 231 | Log.i(TAG, "Radio and Bluetooth shutdown complete."); |
| 232 | break; |
| 233 | } |
| 234 | SystemClock.sleep(PHONE_STATE_POLL_SLEEP_MSEC); |
| 235 | } |
| 236 | |
| 237 | //shutdown power |
| 238 | Log.i(TAG, "Performing low-level shutdown..."); |
| 239 | Power.shutdown(); |
| 240 | } |
| 241 | } |