Improve shutdown process to send broadcast for applications.
This introduces a new class in the base platform for performing a clean
shutdown (which was copied from the classes in the policies). It
includes new features to send a shutdown broadcast for applications
to do cleanup, and ot have the activity manager pause the current
activity before proceeding with the shutdown. These facilities are
also use to write at the most recent stat files for sync, battery
and user activity.
diff --git a/core/java/com/android/internal/app/ShutdownThread.java b/core/java/com/android/internal/app/ShutdownThread.java
new file mode 100644
index 0000000..77d6e20
--- /dev/null
+++ b/core/java/com/android/internal/app/ShutdownThread.java
@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 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.internal.app;
+
+import android.app.ActivityManagerNative;
+import android.app.IActivityManager;
+import android.app.ProgressDialog;
+import android.app.AlertDialog;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.IBluetoothDevice;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.RemoteException;
+import android.os.Power;
+import android.os.ServiceManager;
+import android.os.SystemClock;
+import com.android.internal.telephony.ITelephony;
+import android.util.Log;
+import android.view.WindowManager;
+
+public final class ShutdownThread extends Thread {
+ // constants
+ private static final String TAG = "ShutdownThread";
+ private static final int MAX_NUM_PHONE_STATE_READS = 16;
+ private static final int PHONE_STATE_POLL_SLEEP_MSEC = 500;
+ // maximum time we wait for the shutdown broadcast before going on.
+ private static final int MAX_BROADCAST_TIME = 10*1000;
+
+ // state tracking
+ private static Object sIsStartedGuard = new Object();
+ private static boolean sIsStarted = false;
+
+ // static instance of this thread
+ private static final ShutdownThread sInstance = new ShutdownThread();
+
+ private final Object mBroadcastDoneSync = new Object();
+ private boolean mBroadcastDone;
+ private Context mContext;
+ private Handler mHandler;
+
+ private ShutdownThread() {
+ }
+
+ /**
+ * Request a clean shutdown, waiting for subsystems to clean up their
+ * state etc. Must be called from a Looper thread in which its UI
+ * is shown.
+ *
+ * @param context Context used to display the shutdown progress dialog.
+ */
+ public static void shutdown(final Context context, boolean confirm) {
+ // ensure that only one thread is trying to power down.
+ // any additional calls are just returned
+ synchronized (sIsStartedGuard){
+ if (sIsStarted) {
+ Log.d(TAG, "Request to shutdown already running, returning.");
+ return;
+ }
+ }
+
+ Log.d(TAG, "Notifying thread to start radio shutdown");
+
+ if (confirm) {
+ final AlertDialog dialog = new AlertDialog.Builder(context)
+ .setIcon(android.R.drawable.ic_dialog_alert)
+ .setTitle(com.android.internal.R.string.power_off)
+ .setMessage(com.android.internal.R.string.shutdown_confirm)
+ .setPositiveButton(com.android.internal.R.string.yes, new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface dialog, int which) {
+ beginShutdownSequence(context);
+ }
+ })
+ .setNegativeButton(com.android.internal.R.string.no, null)
+ .create();
+ dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
+ dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
+ dialog.show();
+ } else {
+ beginShutdownSequence(context);
+ }
+ }
+
+ private static void beginShutdownSequence(Context context) {
+ synchronized (sIsStartedGuard) {
+ sIsStarted = true;
+ }
+
+ // throw up an indeterminate system dialog to indicate radio is
+ // shutting down.
+ ProgressDialog pd = new ProgressDialog(context);
+ pd.setTitle(context.getText(com.android.internal.R.string.power_off));
+ pd.setMessage(context.getText(com.android.internal.R.string.shutdown_progress));
+ pd.setIndeterminate(true);
+ pd.setCancelable(false);
+ pd.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
+ pd.getWindow().addFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
+
+ pd.show();
+
+ // start the thread that initiates shutdown
+ sInstance.mContext = context;
+ sInstance.mHandler = new Handler() {
+ };
+ sInstance.start();
+ }
+
+ void broadcastDone() {
+ synchronized (mBroadcastDoneSync) {
+ mBroadcastDone = true;
+ mBroadcastDoneSync.notifyAll();
+ }
+ }
+
+ /**
+ * Makes sure we handle the shutdown gracefully.
+ * Shuts off power regardless of radio and bluetooth state if the alloted time has passed.
+ */
+ public void run() {
+ boolean bluetoothOff;
+ boolean radioOff;
+
+ BroadcastReceiver br = new BroadcastReceiver() {
+ @Override public void onReceive(Context context, Intent intent) {
+ // We don't allow apps to cancel this, so ignore the result.
+ broadcastDone();
+ }
+ };
+
+ Log.i(TAG, "Sending shutdown broadcast...");
+
+ // First send the high-level shut down broadcast.
+ mBroadcastDone = false;
+ mContext.sendOrderedBroadcast(new Intent(Intent.ACTION_SHUTDOWN), null,
+ br, mHandler, 0, null, null);
+
+ final long endTime = System.currentTimeMillis() + MAX_BROADCAST_TIME;
+ synchronized (mBroadcastDoneSync) {
+ while (!mBroadcastDone) {
+ long delay = endTime - System.currentTimeMillis();
+ if (delay <= 0) {
+ Log.w(TAG, "Shutdown broadcast timed out");
+ break;
+ }
+ try {
+ mBroadcastDoneSync.wait(delay);
+ } catch (InterruptedException e) {
+ }
+ }
+ }
+
+ Log.i(TAG, "Shutting down activity manager...");
+
+ final IActivityManager am =
+ ActivityManagerNative.asInterface(ServiceManager.checkService("activity"));
+ if (am != null) {
+ try {
+ am.shutdown(MAX_BROADCAST_TIME);
+ } catch (RemoteException e) {
+ }
+ }
+
+ final ITelephony phone =
+ ITelephony.Stub.asInterface(ServiceManager.checkService("phone"));
+ final IBluetoothDevice bluetooth =
+ IBluetoothDevice.Stub.asInterface(ServiceManager.checkService(
+ Context.BLUETOOTH_SERVICE));
+
+ try {
+ bluetoothOff = bluetooth == null ||
+ bluetooth.getBluetoothState() == BluetoothDevice.BLUETOOTH_STATE_OFF;
+ if (!bluetoothOff) {
+ Log.w(TAG, "Disabling Bluetooth...");
+ bluetooth.disable(false); // disable but don't persist new state
+ }
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
+ bluetoothOff = true;
+ }
+
+ try {
+ radioOff = phone == null || !phone.isRadioOn();
+ if (!radioOff) {
+ Log.w(TAG, "Turning off radio...");
+ phone.setRadio(false);
+ }
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during radio shutdown", ex);
+ radioOff = true;
+ }
+
+ Log.i(TAG, "Waiting for Bluetooth and Radio...");
+
+ // Wait a max of 32 seconds for clean shutdown
+ for (int i = 0; i < MAX_NUM_PHONE_STATE_READS; i++) {
+ if (!bluetoothOff) {
+ try {
+ bluetoothOff =
+ bluetooth.getBluetoothState() == BluetoothDevice.BLUETOOTH_STATE_OFF;
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
+ bluetoothOff = true;
+ }
+ }
+ if (!radioOff) {
+ try {
+ radioOff = !phone.isRadioOn();
+ } catch (RemoteException ex) {
+ Log.e(TAG, "RemoteException during radio shutdown", ex);
+ radioOff = true;
+ }
+ }
+ if (radioOff && bluetoothOff) {
+ Log.i(TAG, "Radio and Bluetooth shutdown complete.");
+ break;
+ }
+ SystemClock.sleep(PHONE_STATE_POLL_SLEEP_MSEC);
+ }
+
+ //shutdown power
+ Log.i(TAG, "Performing low-level shutdown...");
+ Power.shutdown();
+ }
+}