Move power manager to a new package.

Change-Id: I5f5a6435e64354b7d6535e8e9a63934ba7a3f448

1 files changed, 520 insertions, 0 deletions

diff --git a/services/java/com/android/server/power/ShutdownThread.java b/services/java/com/android/server/power/ShutdownThread.java
new file mode 100644
index 0000000..5f2f428
--- /dev/null
+++ b/services/java/com/android/server/power/ShutdownThread.java
@@ -0,0 +1,520 @@
+/*
+ * 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.server.power;
+
+import android.app.ActivityManagerNative;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.IActivityManager;
+import android.app.ProgressDialog;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.IBluetooth;
+import android.nfc.NfcAdapter;
+import android.nfc.INfcAdapter;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Handler;
+import android.os.PowerManager;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.SystemClock;
+import android.os.SystemProperties;
+import android.os.Vibrator;
+import android.os.SystemVibrator;
+import android.os.storage.IMountService;
+import android.os.storage.IMountShutdownObserver;
+
+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 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;
+    private static final int MAX_SHUTDOWN_WAIT_TIME = 20*1000;
+    private static final int MAX_RADIO_WAIT_TIME = 12*1000;
+
+    // length of vibration before shutting down
+    private static final int SHUTDOWN_VIBRATE_MS = 500;
+    
+    // state tracking
+    private static Object sIsStartedGuard = new Object();
+    private static boolean sIsStarted = false;
+    
+    private static boolean mReboot;
+    private static boolean mRebootSafeMode;
+    private static String mRebootReason;
+
+    // Provides shutdown assurance in case the system_server is killed
+    public static final String SHUTDOWN_ACTION_PROPERTY = "sys.shutdown.requested";
+
+    // Indicates whether we are rebooting into safe mode
+    public static final String REBOOT_SAFEMODE_PROPERTY = "persist.sys.safemode";
+
+    // static instance of this thread
+    private static final ShutdownThread sInstance = new ShutdownThread();
+    
+    private final Object mActionDoneSync = new Object();
+    private boolean mActionDone;
+    private Context mContext;
+    private PowerManager mPowerManager;
+    private PowerManager.WakeLock mCpuWakeLock;
+    private PowerManager.WakeLock mScreenWakeLock;
+    private Handler mHandler;
+
+    private static AlertDialog sConfirmDialog;
+    
+    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.
+     * @param confirm true if user confirmation is needed before shutting down.
+     */
+    public static void shutdown(final Context context, boolean confirm) {
+        mReboot = false;
+        mRebootSafeMode = false;
+        shutdownInner(context, confirm);
+    }
+
+    static void shutdownInner(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;
+            }
+        }
+
+        final int longPressBehavior = context.getResources().getInteger(
+                        com.android.internal.R.integer.config_longPressOnPowerBehavior);
+        final int resourceId = mRebootSafeMode
+                ? com.android.internal.R.string.reboot_safemode_confirm
+                : (longPressBehavior == 2
+                        ? com.android.internal.R.string.shutdown_confirm_question
+                        : com.android.internal.R.string.shutdown_confirm);
+
+        Log.d(TAG, "Notifying thread to start shutdown longPressBehavior=" + longPressBehavior);
+
+        if (confirm) {
+            final CloseDialogReceiver closer = new CloseDialogReceiver(context);
+            if (sConfirmDialog != null) {
+                sConfirmDialog.dismiss();
+            }
+            sConfirmDialog = new AlertDialog.Builder(context)
+                    .setTitle(mRebootSafeMode
+                            ? com.android.internal.R.string.reboot_safemode_title
+                            : com.android.internal.R.string.power_off)
+                    .setMessage(resourceId)
+                    .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();
+            closer.dialog = sConfirmDialog;
+            sConfirmDialog.setOnDismissListener(closer);
+            sConfirmDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
+            sConfirmDialog.show();
+        } else {
+            beginShutdownSequence(context);
+        }
+    }
+
+    private static class CloseDialogReceiver extends BroadcastReceiver
+            implements DialogInterface.OnDismissListener {
+        private Context mContext;
+        public Dialog dialog;
+
+        CloseDialogReceiver(Context context) {
+            mContext = context;
+            IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
+            context.registerReceiver(this, filter);
+        }
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            dialog.cancel();
+        }
+
+        public void onDismiss(DialogInterface unused) {
+            mContext.unregisterReceiver(this);
+        }
+    }
+
+    /**
+     * 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.
+     * @param reason code to pass to the kernel (e.g. "recovery"), or null.
+     * @param confirm true if user confirmation is needed before shutting down.
+     */
+    public static void reboot(final Context context, String reason, boolean confirm) {
+        mReboot = true;
+        mRebootSafeMode = false;
+        mRebootReason = reason;
+        shutdownInner(context, confirm);
+    }
+
+    /**
+     * Request a reboot into safe mode.  Must be called from a Looper thread in which its UI
+     * is shown.
+     *
+     * @param context Context used to display the shutdown progress dialog.
+     * @param confirm true if user confirmation is needed before shutting down.
+     */
+    public static void rebootSafeMode(final Context context, boolean confirm) {
+        mReboot = true;
+        mRebootSafeMode = true;
+        mRebootReason = null;
+        shutdownInner(context, confirm);
+    }
+
+    private static void beginShutdownSequence(Context context) {
+        synchronized (sIsStartedGuard) {
+            if (sIsStarted) {
+                Log.d(TAG, "Shutdown sequence already running, returning.");
+                return;
+            }
+            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.show();
+
+        sInstance.mContext = context;
+        sInstance.mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
+
+        // make sure we never fall asleep again
+        sInstance.mCpuWakeLock = null;
+        try {
+            sInstance.mCpuWakeLock = sInstance.mPowerManager.newWakeLock(
+                    PowerManager.PARTIAL_WAKE_LOCK, TAG + "-cpu");
+            sInstance.mCpuWakeLock.setReferenceCounted(false);
+            sInstance.mCpuWakeLock.acquire();
+        } catch (SecurityException e) {
+            Log.w(TAG, "No permission to acquire wake lock", e);
+            sInstance.mCpuWakeLock = null;
+        }
+
+        // also make sure the screen stays on for better user experience
+        sInstance.mScreenWakeLock = null;
+        if (sInstance.mPowerManager.isScreenOn()) {
+            try {
+                sInstance.mScreenWakeLock = sInstance.mPowerManager.newWakeLock(
+                        PowerManager.FULL_WAKE_LOCK, TAG + "-screen");
+                sInstance.mScreenWakeLock.setReferenceCounted(false);
+                sInstance.mScreenWakeLock.acquire();
+            } catch (SecurityException e) {
+                Log.w(TAG, "No permission to acquire wake lock", e);
+                sInstance.mScreenWakeLock = null;
+            }
+        }
+
+        // start the thread that initiates shutdown
+        sInstance.mHandler = new Handler() {
+        };
+        sInstance.start();
+    }
+
+    void actionDone() {
+        synchronized (mActionDoneSync) {
+            mActionDone = true;
+            mActionDoneSync.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() {
+        BroadcastReceiver br = new BroadcastReceiver() {
+            @Override public void onReceive(Context context, Intent intent) {
+                // We don't allow apps to cancel this, so ignore the result.
+                actionDone();
+            }
+        };
+
+        /*
+         * Write a system property in case the system_server reboots before we
+         * get to the actual hardware restart. If that happens, we'll retry at
+         * the beginning of the SystemServer startup.
+         */
+        {
+            String reason = (mReboot ? "1" : "0") + (mRebootReason != null ? mRebootReason : "");
+            SystemProperties.set(SHUTDOWN_ACTION_PROPERTY, reason);
+        }
+
+        /*
+         * If we are rebooting into safe mode, write a system property
+         * indicating so.
+         */
+        if (mRebootSafeMode) {
+            SystemProperties.set(REBOOT_SAFEMODE_PROPERTY, "1");
+        }
+
+        Log.i(TAG, "Sending shutdown broadcast...");
+        
+        // First send the high-level shut down broadcast.
+        mActionDone = false;
+        mContext.sendOrderedBroadcast(new Intent(Intent.ACTION_SHUTDOWN), null,
+                br, mHandler, 0, null, null);
+        
+        final long endTime = SystemClock.elapsedRealtime() + MAX_BROADCAST_TIME;
+        synchronized (mActionDoneSync) {
+            while (!mActionDone) {
+                long delay = endTime - SystemClock.elapsedRealtime();
+                if (delay <= 0) {
+                    Log.w(TAG, "Shutdown broadcast timed out");
+                    break;
+                }
+                try {
+                    mActionDoneSync.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) {
+            }
+        }
+
+        // Shutdown radios.
+        shutdownRadios(MAX_RADIO_WAIT_TIME);
+
+        // Shutdown MountService to ensure media is in a safe state
+        IMountShutdownObserver observer = new IMountShutdownObserver.Stub() {
+            public void onShutDownComplete(int statusCode) throws RemoteException {
+                Log.w(TAG, "Result code " + statusCode + " from MountService.shutdown");
+                actionDone();
+            }
+        };
+
+        Log.i(TAG, "Shutting down MountService");
+
+        // Set initial variables and time out time.
+        mActionDone = false;
+        final long endShutTime = SystemClock.elapsedRealtime() + MAX_SHUTDOWN_WAIT_TIME;
+        synchronized (mActionDoneSync) {
+            try {
+                final IMountService mount = IMountService.Stub.asInterface(
+                        ServiceManager.checkService("mount"));
+                if (mount != null) {
+                    mount.shutdown(observer);
+                } else {
+                    Log.w(TAG, "MountService unavailable for shutdown");
+                }
+            } catch (Exception e) {
+                Log.e(TAG, "Exception during MountService shutdown", e);
+            }
+            while (!mActionDone) {
+                long delay = endShutTime - SystemClock.elapsedRealtime();
+                if (delay <= 0) {
+                    Log.w(TAG, "Shutdown wait timed out");
+                    break;
+                }
+                try {
+                    mActionDoneSync.wait(delay);
+                } catch (InterruptedException e) {
+                }
+            }
+        }
+
+        rebootOrShutdown(mReboot, mRebootReason);
+    }
+
+    private void shutdownRadios(int timeout) {
+        // If a radio is wedged, disabling it may hang so we do this work in another thread,
+        // just in case.
+        final long endTime = SystemClock.elapsedRealtime() + timeout;
+        final boolean[] done = new boolean[1];
+        Thread t = new Thread() {
+            public void run() {
+                boolean nfcOff;
+                boolean bluetoothOff;
+                boolean radioOff;
+
+                final INfcAdapter nfc =
+                        INfcAdapter.Stub.asInterface(ServiceManager.checkService("nfc"));
+                final ITelephony phone =
+                        ITelephony.Stub.asInterface(ServiceManager.checkService("phone"));
+                final IBluetooth bluetooth =
+                        IBluetooth.Stub.asInterface(ServiceManager.checkService(
+                                BluetoothAdapter.BLUETOOTH_SERVICE));
+
+                try {
+                    nfcOff = nfc == null ||
+                             nfc.getState() == NfcAdapter.STATE_OFF;
+                    if (!nfcOff) {
+                        Log.w(TAG, "Turning off NFC...");
+                        nfc.disable(false); // Don't persist new state
+                    }
+                } catch (RemoteException ex) {
+                Log.e(TAG, "RemoteException during NFC shutdown", ex);
+                    nfcOff = true;
+                }
+
+                try {
+                    bluetoothOff = bluetooth == null ||
+                                   bluetooth.getBluetoothState() == BluetoothAdapter.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 NFC, Bluetooth and Radio...");
+
+                while (SystemClock.elapsedRealtime() < endTime) {
+                    if (!bluetoothOff) {
+                        try {
+                            bluetoothOff =
+                                    bluetooth.getBluetoothState() == BluetoothAdapter.STATE_OFF;
+                        } catch (RemoteException ex) {
+                            Log.e(TAG, "RemoteException during bluetooth shutdown", ex);
+                            bluetoothOff = true;
+                        }
+                        if (bluetoothOff) {
+                            Log.i(TAG, "Bluetooth turned off.");
+                        }
+                    }
+                    if (!radioOff) {
+                        try {
+                            radioOff = !phone.isRadioOn();
+                        } catch (RemoteException ex) {
+                            Log.e(TAG, "RemoteException during radio shutdown", ex);
+                            radioOff = true;
+                        }
+                        if (radioOff) {
+                            Log.i(TAG, "Radio turned off.");
+                        }
+                    }
+                    if (!nfcOff) {
+                        try {
+                            nfcOff = nfc.getState() == NfcAdapter.STATE_OFF;
+                        } catch (RemoteException ex) {
+                            Log.e(TAG, "RemoteException during NFC shutdown", ex);
+                            nfcOff = true;
+                        }
+                        if (radioOff) {
+                            Log.i(TAG, "NFC turned off.");
+                        }
+                    }
+
+                    if (radioOff && bluetoothOff && nfcOff) {
+                        Log.i(TAG, "NFC, Radio and Bluetooth shutdown complete.");
+                        done[0] = true;
+                        break;
+                    }
+                    SystemClock.sleep(PHONE_STATE_POLL_SLEEP_MSEC);
+                }
+            }
+        };
+
+        t.start();
+        try {
+            t.join(timeout);
+        } catch (InterruptedException ex) {
+        }
+        if (!done[0]) {
+            Log.w(TAG, "Timed out waiting for NFC, Radio and Bluetooth shutdown.");
+        }
+    }
+
+    /**
+     * Do not call this directly. Use {@link #reboot(Context, String, boolean)}
+     * or {@link #shutdown(Context, boolean)} instead.
+     *
+     * @param reboot true to reboot or false to shutdown
+     * @param reason reason for reboot
+     */
+    public static void rebootOrShutdown(boolean reboot, String reason) {
+        if (reboot) {
+            Log.i(TAG, "Rebooting, reason: " + reason);
+            try {
+                PowerManagerService.lowLevelReboot(reason);
+            } catch (Exception e) {
+                Log.e(TAG, "Reboot failed, will attempt shutdown instead", e);
+            }
+        } else if (SHUTDOWN_VIBRATE_MS > 0) {
+            // vibrate before shutting down
+            Vibrator vibrator = new SystemVibrator();
+            try {
+                vibrator.vibrate(SHUTDOWN_VIBRATE_MS);
+            } catch (Exception e) {
+                // Failure to vibrate shouldn't interrupt shutdown.  Just log it.
+                Log.w(TAG, "Failed to vibrate during shutdown.", e);
+            }
+
+            // vibrator is asynchronous so we need to wait to avoid shutting down too soon.
+            try {
+                Thread.sleep(SHUTDOWN_VIBRATE_MS);
+            } catch (InterruptedException unused) {
+            }
+        }
+
+        // Shutdown power
+        Log.i(TAG, "Performing low-level shutdown...");
+        PowerManagerService.lowLevelShutdown();
+    }
+}