| /* |
| * Copyright (C) 2016 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.pm; |
| |
| import android.app.AppGlobals; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.IOtaDexopt; |
| import android.content.pm.PackageParser; |
| import android.content.pm.PackageParser.Package; |
| import android.content.pm.ResolveInfo; |
| import android.os.Environment; |
| import android.os.RemoteException; |
| import android.os.ResultReceiver; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.os.storage.StorageManager; |
| import android.util.ArraySet; |
| import android.util.Log; |
| |
| import dalvik.system.DexFile; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Date; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Set; |
| |
| import static com.android.server.pm.Installer.DEXOPT_OTA; |
| |
| /** |
| * A service for A/B OTA dexopting. |
| * |
| * {@hide} |
| */ |
| public class OtaDexoptService extends IOtaDexopt.Stub { |
| private final static String TAG = "OTADexopt"; |
| private final static boolean DEBUG_DEXOPT = true; |
| // Apps used in the last 7 days. |
| private final static long DEXOPT_LRU_THRESHOLD_IN_MINUTES = 7 * 24 * 60; |
| |
| private final Context mContext; |
| private final PackageDexOptimizer mPackageDexOptimizer; |
| private final PackageManagerService mPackageManagerService; |
| |
| // TODO: Evaluate the need for WeakReferences here. |
| private List<PackageParser.Package> mDexoptPackages; |
| |
| public OtaDexoptService(Context context, PackageManagerService packageManagerService) { |
| this.mContext = context; |
| this.mPackageManagerService = packageManagerService; |
| |
| // Use the package manager install and install lock here for the OTA dex optimizer. |
| mPackageDexOptimizer = new OTADexoptPackageDexOptimizer(packageManagerService.mInstaller, |
| packageManagerService.mInstallLock, context); |
| } |
| |
| public static OtaDexoptService main(Context context, |
| PackageManagerService packageManagerService) { |
| OtaDexoptService ota = new OtaDexoptService(context, packageManagerService); |
| ServiceManager.addService("otadexopt", ota); |
| |
| return ota; |
| } |
| |
| @Override |
| public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err, |
| String[] args, ResultReceiver resultReceiver) throws RemoteException { |
| (new OtaDexoptShellCommand(this)).exec( |
| this, in, out, err, args, resultReceiver); |
| } |
| |
| @Override |
| public synchronized void prepare() throws RemoteException { |
| if (mDexoptPackages != null) { |
| throw new IllegalStateException("already called prepare()"); |
| } |
| |
| mDexoptPackages = new LinkedList<>(); |
| |
| ArrayList<PackageParser.Package> pkgs; |
| synchronized (mPackageManagerService.mPackages) { |
| pkgs = new ArrayList<PackageParser.Package>(mPackageManagerService.mPackages.values()); |
| } |
| |
| // Sort apps by importance for dexopt ordering. Important apps are given more priority |
| // in case the device runs out of space. |
| |
| // Give priority to core apps. |
| for (PackageParser.Package pkg : pkgs) { |
| if (pkg.coreApp) { |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Adding core app " + mDexoptPackages.size() + ": " + pkg.packageName); |
| } |
| mDexoptPackages.add(pkg); |
| } |
| } |
| pkgs.removeAll(mDexoptPackages); |
| |
| // Give priority to system apps that listen for pre boot complete. |
| Intent intent = new Intent(Intent.ACTION_PRE_BOOT_COMPLETED); |
| ArraySet<String> pkgNames = getPackageNamesForIntent(intent, UserHandle.USER_SYSTEM); |
| for (PackageParser.Package pkg : pkgs) { |
| if (pkgNames.contains(pkg.packageName)) { |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Adding pre boot system app " + mDexoptPackages.size() + ": " + |
| pkg.packageName); |
| } |
| mDexoptPackages.add(pkg); |
| } |
| } |
| pkgs.removeAll(mDexoptPackages); |
| |
| // Filter out packages that aren't recently used, add all remaining apps. |
| // TODO: add a property to control this? |
| if (mPackageManagerService.isHistoricalPackageUsageAvailable()) { |
| filterRecentlyUsedApps(pkgs, DEXOPT_LRU_THRESHOLD_IN_MINUTES * 60 * 1000); |
| } |
| mDexoptPackages.addAll(pkgs); |
| |
| // Now go ahead and also add the libraries required for these packages. |
| // TODO: Think about interleaving things. |
| Set<PackageParser.Package> dependencies = new HashSet<>(); |
| for (PackageParser.Package p : mDexoptPackages) { |
| dependencies.addAll(mPackageManagerService.findSharedNonSystemLibraries(p)); |
| } |
| if (!dependencies.isEmpty()) { |
| dependencies.removeAll(mDexoptPackages); |
| } |
| mDexoptPackages.addAll(dependencies); |
| |
| if (DEBUG_DEXOPT) { |
| StringBuilder sb = new StringBuilder(); |
| for (PackageParser.Package pkg : mDexoptPackages) { |
| if (sb.length() > 0) { |
| sb.append(", "); |
| } |
| sb.append(pkg.packageName); |
| } |
| Log.i(TAG, "Packages to be optimized: " + sb.toString()); |
| } |
| } |
| |
| @Override |
| public synchronized void cleanup() throws RemoteException { |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Cleaning up OTA Dexopt state."); |
| } |
| mDexoptPackages = null; |
| } |
| |
| @Override |
| public synchronized boolean isDone() throws RemoteException { |
| if (mDexoptPackages == null) { |
| throw new IllegalStateException("done() called before prepare()"); |
| } |
| |
| return mDexoptPackages.isEmpty(); |
| } |
| |
| @Override |
| public synchronized void dexoptNextPackage() throws RemoteException { |
| if (mDexoptPackages == null) { |
| throw new IllegalStateException("dexoptNextPackage() called before prepare()"); |
| } |
| if (mDexoptPackages.isEmpty()) { |
| // Tolerate repeated calls. |
| return; |
| } |
| |
| PackageParser.Package nextPackage = mDexoptPackages.remove(0); |
| |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Processing " + nextPackage.packageName + " for OTA dexopt."); |
| } |
| |
| // Check for low space. |
| // TODO: If apps are not installed in the internal /data partition, we should compare |
| // against that storage's free capacity. |
| File dataDir = Environment.getDataDirectory(); |
| long lowThreshold = StorageManager.from(mContext).getStorageLowBytes(dataDir); |
| if (lowThreshold == 0) { |
| throw new IllegalStateException("Invalid low memory threshold"); |
| } |
| long usableSpace = dataDir.getUsableSpace(); |
| if (usableSpace < lowThreshold) { |
| Log.w(TAG, "Not running dexopt on " + nextPackage.packageName + " due to low memory: " + |
| usableSpace); |
| return; |
| } |
| |
| mPackageDexOptimizer.performDexOpt(nextPackage, null /* ISAs */, false /* useProfiles */, |
| false /* extractOnly */); |
| } |
| |
| private ArraySet<String> getPackageNamesForIntent(Intent intent, int userId) { |
| List<ResolveInfo> ris = null; |
| try { |
| ris = AppGlobals.getPackageManager().queryIntentReceivers( |
| intent, null, 0, userId); |
| } catch (RemoteException e) { |
| } |
| ArraySet<String> pkgNames = new ArraySet<String>(ris == null ? 0 : ris.size()); |
| if (ris != null) { |
| for (ResolveInfo ri : ris) { |
| pkgNames.add(ri.activityInfo.packageName); |
| } |
| } |
| return pkgNames; |
| } |
| |
| private void filterRecentlyUsedApps(Collection<PackageParser.Package> pkgs, |
| long dexOptLRUThresholdInMills) { |
| // Filter out packages that aren't recently used. |
| int total = pkgs.size(); |
| int skipped = 0; |
| long now = System.currentTimeMillis(); |
| for (Iterator<PackageParser.Package> i = pkgs.iterator(); i.hasNext();) { |
| PackageParser.Package pkg = i.next(); |
| long then = pkg.mLastPackageUsageTimeInMills; |
| if (then + dexOptLRUThresholdInMills < now) { |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Skipping dexopt of " + pkg.packageName + " last resumed: " + |
| ((then == 0) ? "never" : new Date(then))); |
| } |
| i.remove(); |
| skipped++; |
| } |
| } |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Skipped optimizing " + skipped + " of " + total); |
| } |
| } |
| |
| private static class OTADexoptPackageDexOptimizer extends |
| PackageDexOptimizer.ForcedUpdatePackageDexOptimizer { |
| |
| public OTADexoptPackageDexOptimizer(Installer installer, Object installLock, |
| Context context) { |
| super(installer, installLock, context, "*otadexopt*"); |
| } |
| |
| @Override |
| protected int adjustDexoptFlags(int dexoptFlags) { |
| // Add the OTA flag. |
| return dexoptFlags | DEXOPT_OTA; |
| } |
| |
| @Override |
| protected void recordSuccessfulDexopt(Package pkg, String instructionSet) { |
| // Never record the dexopt, as it's in the B partition. |
| } |
| |
| } |
| } |