887f355f99
This is a very simply implementation: upon receiving an IPC, if the handling thread is at a background priority (the driver will have taken care of propagating this from the calling thread), then stick it in to the background scheduling group. Plus an API to turn this off for the process, which is used by the system process. This also pulls some of the code for managing scheduling classes out of the Process JNI wrappers and in to some convenience methods in thread.h.
521 lines
20 KiB
Java
521 lines
20 KiB
Java
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server;
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import com.android.server.am.ActivityManagerService;
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import com.android.server.status.StatusBarService;
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import com.android.internal.os.BinderInternal;
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import com.android.internal.os.SamplingProfilerIntegration;
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import dalvik.system.VMRuntime;
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import android.app.ActivityManagerNative;
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import android.bluetooth.BluetoothAdapter;
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import android.content.ComponentName;
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import android.content.ContentResolver;
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import android.content.ContentService;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.IPackageManager;
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import android.database.ContentObserver;
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import android.database.Cursor;
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import android.media.AudioService;
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import android.os.*;
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import android.provider.Contacts.People;
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import android.provider.Settings;
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import android.server.BluetoothA2dpService;
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import android.server.BluetoothService;
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import android.server.search.SearchManagerService;
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import android.util.EventLog;
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import android.util.Log;
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import android.accounts.AccountManagerService;
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import java.io.File;
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import java.util.Timer;
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import java.util.TimerTask;
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class ServerThread extends Thread {
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private static final String TAG = "SystemServer";
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private final static boolean INCLUDE_DEMO = false;
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private static final int LOG_BOOT_PROGRESS_SYSTEM_RUN = 3010;
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private ContentResolver mContentResolver;
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private class AdbSettingsObserver extends ContentObserver {
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public AdbSettingsObserver() {
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super(null);
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}
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@Override
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public void onChange(boolean selfChange) {
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boolean enableAdb = (Settings.Secure.getInt(mContentResolver,
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Settings.Secure.ADB_ENABLED, 0) > 0);
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// setting this secure property will start or stop adbd
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SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0");
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}
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}
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@Override
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public void run() {
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EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN,
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SystemClock.uptimeMillis());
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ActivityManagerService.prepareTraceFile(false); // create dir
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Looper.prepare();
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android.os.Process.setThreadPriority(
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android.os.Process.THREAD_PRIORITY_FOREGROUND);
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BinderInternal.disableBackgroundScheduling(true);
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String factoryTestStr = SystemProperties.get("ro.factorytest");
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int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF
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: Integer.parseInt(factoryTestStr);
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LightsService lights = null;
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PowerManagerService power = null;
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BatteryService battery = null;
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ConnectivityService connectivity = null;
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IPackageManager pm = null;
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Context context = null;
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WindowManagerService wm = null;
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BluetoothService bluetooth = null;
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BluetoothA2dpService bluetoothA2dp = null;
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HeadsetObserver headset = null;
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DockObserver dock = null;
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// Critical services...
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try {
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Log.i(TAG, "Entropy Service");
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ServiceManager.addService("entropy", new EntropyService());
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Log.i(TAG, "Power Manager");
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power = new PowerManagerService();
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ServiceManager.addService(Context.POWER_SERVICE, power);
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Log.i(TAG, "Activity Manager");
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context = ActivityManagerService.main(factoryTest);
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Log.i(TAG, "Telephony Registry");
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ServiceManager.addService("telephony.registry", new TelephonyRegistry(context));
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AttributeCache.init(context);
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Log.i(TAG, "Package Manager");
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pm = PackageManagerService.main(context,
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factoryTest != SystemServer.FACTORY_TEST_OFF);
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ActivityManagerService.setSystemProcess();
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mContentResolver = context.getContentResolver();
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// The AccountManager must come before the ContentService
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try {
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Log.i(TAG, "Account Manager");
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ServiceManager.addService(Context.ACCOUNT_SERVICE,
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new AccountManagerService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Account Manager", e);
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}
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Log.i(TAG, "Content Manager");
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ContentService.main(context,
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factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL);
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Log.i(TAG, "System Content Providers");
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ActivityManagerService.installSystemProviders();
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Log.i(TAG, "Battery Service");
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battery = new BatteryService(context);
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ServiceManager.addService("battery", battery);
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Log.i(TAG, "Lights Service");
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lights = new LightsService(context);
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Log.i(TAG, "Vibrator Service");
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ServiceManager.addService("vibrator", new VibratorService(context));
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// only initialize the power service after we have started the
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// lights service, content providers and the battery service.
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power.init(context, lights, ActivityManagerService.getDefault(), battery);
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Log.i(TAG, "Alarm Manager");
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AlarmManagerService alarm = new AlarmManagerService(context);
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ServiceManager.addService(Context.ALARM_SERVICE, alarm);
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Log.i(TAG, "Init Watchdog");
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Watchdog.getInstance().init(context, battery, power, alarm,
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ActivityManagerService.self());
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// Sensor Service is needed by Window Manager, so this goes first
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Log.i(TAG, "Sensor Service");
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ServiceManager.addService(Context.SENSOR_SERVICE, new SensorService(context));
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Log.i(TAG, "Window Manager");
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wm = WindowManagerService.main(context, power,
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factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL);
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ServiceManager.addService(Context.WINDOW_SERVICE, wm);
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((ActivityManagerService)ServiceManager.getService("activity"))
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.setWindowManager(wm);
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// Skip Bluetooth if we have an emulator kernel
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// TODO: Use a more reliable check to see if this product should
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// support Bluetooth - see bug 988521
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if (SystemProperties.get("ro.kernel.qemu").equals("1")) {
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Log.i(TAG, "Registering null Bluetooth Service (emulator)");
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ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);
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} else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) {
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Log.i(TAG, "Registering null Bluetooth Service (factory test)");
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ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);
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} else {
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Log.i(TAG, "Bluetooth Service");
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bluetooth = new BluetoothService(context);
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ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth);
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bluetooth.initAfterRegistration();
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bluetoothA2dp = new BluetoothA2dpService(context, bluetooth);
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ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE,
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bluetoothA2dp);
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int bluetoothOn = Settings.Secure.getInt(mContentResolver,
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Settings.Secure.BLUETOOTH_ON, 0);
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if (bluetoothOn > 0) {
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bluetooth.enable();
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}
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}
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} catch (RuntimeException e) {
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Log.e("System", "Failure starting core service", e);
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}
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StatusBarService statusBar = null;
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InputMethodManagerService imm = null;
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AppWidgetService appWidget = null;
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NotificationManagerService notification = null;
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WallpaperManagerService wallpaper = null;
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if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) {
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try {
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Log.i(TAG, "Status Bar");
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statusBar = new StatusBarService(context);
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ServiceManager.addService("statusbar", statusBar);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting StatusBarService", e);
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}
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try {
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Log.i(TAG, "Clipboard Service");
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ServiceManager.addService("clipboard", new ClipboardService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Clipboard Service", e);
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}
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try {
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Log.i(TAG, "Input Method Service");
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imm = new InputMethodManagerService(context, statusBar);
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ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Input Manager Service", e);
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}
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try {
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Log.i(TAG, "NetStat Service");
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ServiceManager.addService("netstat", new NetStatService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting NetStat Service", e);
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}
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try {
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Log.i(TAG, "Connectivity Service");
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connectivity = ConnectivityService.getInstance(context);
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ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Connectivity Service", e);
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}
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try {
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Log.i(TAG, "Accessibility Manager");
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ServiceManager.addService(Context.ACCESSIBILITY_SERVICE,
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new AccessibilityManagerService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Accessibility Manager", e);
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}
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try {
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Log.i(TAG, "Notification Manager");
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notification = new NotificationManagerService(context, statusBar, lights);
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ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Notification Manager", e);
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}
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try {
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// MountService must start after NotificationManagerService
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Log.i(TAG, "Mount Service");
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ServiceManager.addService("mount", new MountService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Mount Service", e);
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}
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try {
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Log.i(TAG, "Device Storage Monitor");
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ServiceManager.addService(DeviceStorageMonitorService.SERVICE,
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new DeviceStorageMonitorService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting DeviceStorageMonitor service", e);
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}
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try {
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Log.i(TAG, "Location Manager");
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ServiceManager.addService(Context.LOCATION_SERVICE, new LocationManagerService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Location Manager", e);
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}
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try {
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Log.i(TAG, "Search Service");
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ServiceManager.addService( Context.SEARCH_SERVICE, new SearchManagerService(context) );
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Search Service", e);
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}
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if (INCLUDE_DEMO) {
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Log.i(TAG, "Installing demo data...");
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(new DemoThread(context)).start();
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}
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try {
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Log.i(TAG, "DropBox Service");
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ServiceManager.addService(Context.DROPBOX_SERVICE,
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new DropBoxManagerService(context, new File("/data/system/dropbox")));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting DropBoxManagerService", e);
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}
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try {
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Log.i(TAG, "Checkin Service");
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Intent intent = new Intent().setComponent(new ComponentName(
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"com.google.android.server.checkin",
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"com.google.android.server.checkin.CheckinService"));
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if (context.startService(intent) == null) {
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Log.w(TAG, "Using fallback Checkin Service.");
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ServiceManager.addService("checkin", new FallbackCheckinService(context));
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}
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Checkin Service", e);
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}
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try {
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Log.i(TAG, "Wallpaper Service");
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wallpaper = new WallpaperManagerService(context);
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ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Wallpaper Service", e);
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}
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try {
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Log.i(TAG, "Audio Service");
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ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Audio Service", e);
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}
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try {
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Log.i(TAG, "Headset Observer");
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// Listen for wired headset changes
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headset = new HeadsetObserver(context);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting HeadsetObserver", e);
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}
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try {
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Log.i(TAG, "Dock Observer");
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// Listen for dock station changes
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dock = new DockObserver(context, power);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting DockObserver", e);
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}
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try {
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Log.i(TAG, "Backup Service");
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ServiceManager.addService(Context.BACKUP_SERVICE, new BackupManagerService(context));
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting Backup Service", e);
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}
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try {
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Log.i(TAG, "AppWidget Service");
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appWidget = new AppWidgetService(context);
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ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget);
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} catch (Throwable e) {
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Log.e(TAG, "Failure starting AppWidget Service", e);
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}
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try {
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com.android.server.status.StatusBarPolicy.installIcons(context, statusBar);
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} catch (Throwable e) {
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Log.e(TAG, "Failure installing status bar icons", e);
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}
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}
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// make sure the ADB_ENABLED setting value matches the secure property value
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Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED,
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"1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0);
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// register observer to listen for settings changes
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mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED),
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false, new AdbSettingsObserver());
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// Before things start rolling, be sure we have decided whether
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// we are in safe mode.
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final boolean safeMode = wm.detectSafeMode();
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if (safeMode) {
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try {
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ActivityManagerNative.getDefault().enterSafeMode();
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} catch (RemoteException e) {
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}
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}
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// It is now time to start up the app processes...
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if (notification != null) {
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notification.systemReady();
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}
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if (statusBar != null) {
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statusBar.systemReady();
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}
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wm.systemReady();
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power.systemReady();
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try {
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pm.systemReady();
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} catch (RemoteException e) {
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}
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// These are needed to propagate to the runnable below.
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final BatteryService batteryF = battery;
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final ConnectivityService connectivityF = connectivity;
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final DockObserver dockF = dock;
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final AppWidgetService appWidgetF = appWidget;
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final WallpaperManagerService wallpaperF = wallpaper;
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final InputMethodManagerService immF = imm;
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// We now tell the activity manager it is okay to run third party
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// code. It will call back into us once it has gotten to the state
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// where third party code can really run (but before it has actually
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// started launching the initial applications), for us to complete our
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// initialization.
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((ActivityManagerService)ActivityManagerNative.getDefault())
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.systemReady(new Runnable() {
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public void run() {
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Log.i(TAG, "Making services ready");
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if (batteryF != null) batteryF.systemReady();
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if (connectivityF != null) connectivityF.systemReady();
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if (dockF != null) dockF.systemReady();
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Watchdog.getInstance().start();
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// It is now okay to let the various system services start their
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// third party code...
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if (appWidgetF != null) appWidgetF.systemReady(safeMode);
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if (wallpaperF != null) wallpaperF.systemReady();
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if (immF != null) immF.systemReady();
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}
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});
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Looper.loop();
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Log.d(TAG, "System ServerThread is exiting!");
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}
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}
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class DemoThread extends Thread
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{
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DemoThread(Context context)
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{
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mContext = context;
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}
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@Override
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public void run()
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{
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try {
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Cursor c = mContext.getContentResolver().query(People.CONTENT_URI, null, null, null, null);
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boolean hasData = c != null && c.moveToFirst();
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if (c != null) {
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c.deactivate();
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}
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if (!hasData) {
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DemoDataSet dataset = new DemoDataSet();
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dataset.add(mContext);
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}
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} catch (Throwable e) {
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Log.e("SystemServer", "Failure installing demo data", e);
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}
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}
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Context mContext;
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}
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public class SystemServer
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{
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private static final String TAG = "SystemServer";
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public static final int FACTORY_TEST_OFF = 0;
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public static final int FACTORY_TEST_LOW_LEVEL = 1;
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public static final int FACTORY_TEST_HIGH_LEVEL = 2;
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static Timer timer;
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static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr
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/**
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* This method is called from Zygote to initialize the system. This will cause the native
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* services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back
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* up into init2() to start the Android services.
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*/
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native public static void init1(String[] args);
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public static void main(String[] args) {
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if (SamplingProfilerIntegration.isEnabled()) {
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SamplingProfilerIntegration.start();
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timer = new Timer();
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timer.schedule(new TimerTask() {
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@Override
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public void run() {
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SamplingProfilerIntegration.writeSnapshot("system_server");
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}
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}, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL);
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}
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// The system server has to run all of the time, so it needs to be
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// as efficient as possible with its memory usage.
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VMRuntime.getRuntime().setTargetHeapUtilization(0.8f);
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System.loadLibrary("android_servers");
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init1(args);
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}
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public static final void init2() {
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Log.i(TAG, "Entered the Android system server!");
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Thread thr = new ServerThread();
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thr.setName("android.server.ServerThread");
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thr.start();
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}
|
|
}
|