| /* |
| * 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 static com.android.server.pm.InstructionSets.getAppDexInstructionSets; |
| import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets; |
| |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.content.pm.IOtaDexopt; |
| import android.content.pm.PackageParser; |
| import android.os.Environment; |
| import android.os.RemoteException; |
| import android.os.ResultReceiver; |
| import android.os.ServiceManager; |
| import android.os.ShellCallback; |
| import android.os.storage.StorageManager; |
| import android.util.Log; |
| import android.util.Slog; |
| |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.server.pm.Installer.InstallerException; |
| import com.android.server.pm.dex.DexoptOptions; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * 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; |
| |
| // The synthetic library dependencies denoting "no checks." |
| private final static String[] NO_LIBRARIES = |
| new String[] { PackageDexOptimizer.SKIP_SHARED_LIBRARY_CHECK }; |
| |
| // The amount of "available" (free - low threshold) space necessary at the start of an OTA to |
| // not bulk-delete unused apps' odex files. |
| private final static long BULK_DELETE_THRESHOLD = 1024 * 1024 * 1024; // 1GB. |
| |
| private final Context mContext; |
| private final PackageManagerService mPackageManagerService; |
| |
| // TODO: Evaluate the need for WeakReferences here. |
| |
| /** |
| * The list of dexopt invocations for all work. |
| */ |
| private List<String> mDexoptCommands; |
| |
| private int completeSize; |
| |
| // MetricsLogger properties. |
| |
| // Space before and after. |
| private long availableSpaceBefore; |
| private long availableSpaceAfterBulkDelete; |
| private long availableSpaceAfterDexopt; |
| |
| // Packages. |
| private int importantPackageCount; |
| private int otherPackageCount; |
| |
| // Number of dexopt commands. This may be different from the count of packages. |
| private int dexoptCommandCountTotal; |
| private int dexoptCommandCountExecuted; |
| |
| // For spent time. |
| private long otaDexoptTimeStart; |
| |
| |
| public OtaDexoptService(Context context, PackageManagerService packageManagerService) { |
| this.mContext = context; |
| this.mPackageManagerService = packageManagerService; |
| } |
| |
| public static OtaDexoptService main(Context context, |
| PackageManagerService packageManagerService) { |
| OtaDexoptService ota = new OtaDexoptService(context, packageManagerService); |
| ServiceManager.addService("otadexopt", ota); |
| |
| // Now it's time to check whether we need to move any A/B artifacts. |
| ota.moveAbArtifacts(packageManagerService.mInstaller); |
| |
| return ota; |
| } |
| |
| @Override |
| public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err, |
| String[] args, ShellCallback callback, ResultReceiver resultReceiver) { |
| (new OtaDexoptShellCommand(this)).exec( |
| this, in, out, err, args, callback, resultReceiver); |
| } |
| |
| @Override |
| public synchronized void prepare() throws RemoteException { |
| if (mDexoptCommands != null) { |
| throw new IllegalStateException("already called prepare()"); |
| } |
| final List<PackageParser.Package> important; |
| final List<PackageParser.Package> others; |
| synchronized (mPackageManagerService.mPackages) { |
| // Important: the packages we need to run with ab-ota compiler-reason. |
| important = PackageManagerServiceUtils.getPackagesForDexopt( |
| mPackageManagerService.mPackages.values(), mPackageManagerService); |
| // Others: we should optimize this with the (first-)boot compiler-reason. |
| others = new ArrayList<>(mPackageManagerService.mPackages.values()); |
| others.removeAll(important); |
| |
| // Pre-size the array list by over-allocating by a factor of 1.5. |
| mDexoptCommands = new ArrayList<>(3 * mPackageManagerService.mPackages.size() / 2); |
| } |
| |
| for (PackageParser.Package p : important) { |
| mDexoptCommands.addAll(generatePackageDexopts(p, PackageManagerService.REASON_AB_OTA)); |
| } |
| for (PackageParser.Package p : others) { |
| // We assume here that there are no core apps left. |
| if (p.coreApp) { |
| throw new IllegalStateException("Found a core app that's not important"); |
| } |
| mDexoptCommands.addAll( |
| generatePackageDexopts(p, PackageManagerService.REASON_FIRST_BOOT)); |
| } |
| completeSize = mDexoptCommands.size(); |
| |
| long spaceAvailable = getAvailableSpace(); |
| if (spaceAvailable < BULK_DELETE_THRESHOLD) { |
| Log.i(TAG, "Low on space, deleting oat files in an attempt to free up space: " |
| + PackageManagerServiceUtils.packagesToString(others)); |
| for (PackageParser.Package pkg : others) { |
| mPackageManagerService.deleteOatArtifactsOfPackage(pkg.packageName); |
| } |
| } |
| long spaceAvailableNow = getAvailableSpace(); |
| |
| prepareMetricsLogging(important.size(), others.size(), spaceAvailable, spaceAvailableNow); |
| } |
| |
| @Override |
| public synchronized void cleanup() throws RemoteException { |
| if (DEBUG_DEXOPT) { |
| Log.i(TAG, "Cleaning up OTA Dexopt state."); |
| } |
| mDexoptCommands = null; |
| availableSpaceAfterDexopt = getAvailableSpace(); |
| |
| performMetricsLogging(); |
| } |
| |
| @Override |
| public synchronized boolean isDone() throws RemoteException { |
| if (mDexoptCommands == null) { |
| throw new IllegalStateException("done() called before prepare()"); |
| } |
| |
| return mDexoptCommands.isEmpty(); |
| } |
| |
| @Override |
| public synchronized float getProgress() throws RemoteException { |
| // Approximate the progress by the amount of already completed commands. |
| if (completeSize == 0) { |
| return 1f; |
| } |
| int commandsLeft = mDexoptCommands.size(); |
| return (completeSize - commandsLeft) / ((float)completeSize); |
| } |
| |
| @Override |
| public synchronized String nextDexoptCommand() throws RemoteException { |
| if (mDexoptCommands == null) { |
| throw new IllegalStateException("dexoptNextPackage() called before prepare()"); |
| } |
| |
| if (mDexoptCommands.isEmpty()) { |
| return "(all done)"; |
| } |
| |
| String next = mDexoptCommands.remove(0); |
| |
| if (getAvailableSpace() > 0) { |
| dexoptCommandCountExecuted++; |
| |
| Log.d(TAG, "Next command: " + next); |
| return next; |
| } else { |
| if (DEBUG_DEXOPT) { |
| Log.w(TAG, "Not enough space for OTA dexopt, stopping with " |
| + (mDexoptCommands.size() + 1) + " commands left."); |
| } |
| mDexoptCommands.clear(); |
| return "(no free space)"; |
| } |
| } |
| |
| private long getMainLowSpaceThreshold() { |
| File dataDir = Environment.getDataDirectory(); |
| @SuppressWarnings("deprecation") |
| long lowThreshold = StorageManager.from(mContext).getStorageLowBytes(dataDir); |
| if (lowThreshold == 0) { |
| throw new IllegalStateException("Invalid low memory threshold"); |
| } |
| return lowThreshold; |
| } |
| |
| /** |
| * Returns the difference of free space to the low-storage-space threshold. Positive values |
| * indicate free bytes. |
| */ |
| private long getAvailableSpace() { |
| // TODO: If apps are not installed in the internal /data partition, we should compare |
| // against that storage's free capacity. |
| long lowThreshold = getMainLowSpaceThreshold(); |
| |
| File dataDir = Environment.getDataDirectory(); |
| long usableSpace = dataDir.getUsableSpace(); |
| |
| return usableSpace - lowThreshold; |
| } |
| |
| /** |
| * Generate all dexopt commands for the given package. |
| */ |
| private synchronized List<String> generatePackageDexopts(PackageParser.Package pkg, |
| int compilationReason) { |
| // Intercept and collect dexopt requests |
| final List<String> commands = new ArrayList<String>(); |
| final Installer collectingInstaller = new Installer(mContext, true) { |
| /** |
| * Encode the dexopt command into a string. |
| * |
| * Note: If you have to change the signature of this function, increase the version |
| * number, and update the counterpart in |
| * frameworks/native/cmds/installd/otapreopt.cpp. |
| */ |
| @Override |
| public void dexopt(String apkPath, int uid, @Nullable String pkgName, |
| String instructionSet, int dexoptNeeded, @Nullable String outputPath, |
| int dexFlags, String compilerFilter, @Nullable String volumeUuid, |
| @Nullable String sharedLibraries, @Nullable String seInfo, boolean downgrade, |
| int targetSdkVersion) |
| throws InstallerException { |
| final StringBuilder builder = new StringBuilder(); |
| |
| // The version. Right now it's 4. |
| builder.append("4 "); |
| |
| builder.append("dexopt"); |
| |
| encodeParameter(builder, apkPath); |
| encodeParameter(builder, uid); |
| encodeParameter(builder, pkgName); |
| encodeParameter(builder, instructionSet); |
| encodeParameter(builder, dexoptNeeded); |
| encodeParameter(builder, outputPath); |
| encodeParameter(builder, dexFlags); |
| encodeParameter(builder, compilerFilter); |
| encodeParameter(builder, volumeUuid); |
| encodeParameter(builder, sharedLibraries); |
| encodeParameter(builder, seInfo); |
| encodeParameter(builder, downgrade); |
| encodeParameter(builder, targetSdkVersion); |
| |
| commands.add(builder.toString()); |
| } |
| |
| /** |
| * Encode a parameter as necessary for the commands string. |
| */ |
| private void encodeParameter(StringBuilder builder, Object arg) { |
| builder.append(' '); |
| |
| if (arg == null) { |
| builder.append('!'); |
| return; |
| } |
| |
| String txt = String.valueOf(arg); |
| if (txt.indexOf('\0') != -1 || txt.indexOf(' ') != -1 || "!".equals(txt)) { |
| throw new IllegalArgumentException( |
| "Invalid argument while executing " + arg); |
| } |
| builder.append(txt); |
| } |
| }; |
| |
| // Use the package manager install and install lock here for the OTA dex optimizer. |
| PackageDexOptimizer optimizer = new OTADexoptPackageDexOptimizer( |
| collectingInstaller, mPackageManagerService.mInstallLock, mContext); |
| |
| String[] libraryDependencies = pkg.usesLibraryFiles; |
| if (pkg.isSystem()) { |
| // For system apps, we want to avoid classpaths checks. |
| libraryDependencies = NO_LIBRARIES; |
| } |
| |
| |
| optimizer.performDexOpt(pkg, libraryDependencies, |
| null /* ISAs */, |
| null /* CompilerStats.PackageStats */, |
| mPackageManagerService.getDexManager().getPackageUseInfoOrDefault(pkg.packageName), |
| new DexoptOptions(pkg.packageName, compilationReason, |
| DexoptOptions.DEXOPT_BOOT_COMPLETE)); |
| |
| return commands; |
| } |
| |
| @Override |
| public synchronized void dexoptNextPackage() throws RemoteException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| private void moveAbArtifacts(Installer installer) { |
| if (mDexoptCommands != null) { |
| throw new IllegalStateException("Should not be ota-dexopting when trying to move."); |
| } |
| |
| if (!mPackageManagerService.isUpgrade()) { |
| Slog.d(TAG, "No upgrade, skipping A/B artifacts check."); |
| return; |
| } |
| |
| // Look into all packages. |
| Collection<PackageParser.Package> pkgs = mPackageManagerService.getPackages(); |
| int packagePaths = 0; |
| int pathsSuccessful = 0; |
| for (PackageParser.Package pkg : pkgs) { |
| if (pkg == null) { |
| continue; |
| } |
| |
| // Does the package have code? If not, there won't be any artifacts. |
| if (!PackageDexOptimizer.canOptimizePackage(pkg)) { |
| continue; |
| } |
| if (pkg.codePath == null) { |
| Slog.w(TAG, "Package " + pkg + " can be optimized but has null codePath"); |
| continue; |
| } |
| |
| // If the path is in /system or /vendor, ignore. It will have been ota-dexopted into |
| // /data/ota and moved into the dalvik-cache already. |
| if (pkg.codePath.startsWith("/system") || pkg.codePath.startsWith("/vendor")) { |
| continue; |
| } |
| |
| final String[] instructionSets = getAppDexInstructionSets(pkg.applicationInfo); |
| final List<String> paths = pkg.getAllCodePathsExcludingResourceOnly(); |
| final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets); |
| for (String dexCodeInstructionSet : dexCodeInstructionSets) { |
| for (String path : paths) { |
| String oatDir = PackageDexOptimizer.getOatDir(new File(pkg.codePath)). |
| getAbsolutePath(); |
| |
| // TODO: Check first whether there is an artifact, to save the roundtrip time. |
| |
| packagePaths++; |
| try { |
| installer.moveAb(path, dexCodeInstructionSet, oatDir); |
| pathsSuccessful++; |
| } catch (InstallerException e) { |
| } |
| } |
| } |
| } |
| Slog.i(TAG, "Moved " + pathsSuccessful + "/" + packagePaths); |
| } |
| |
| /** |
| * Initialize logging fields. |
| */ |
| private void prepareMetricsLogging(int important, int others, long spaceBegin, long spaceBulk) { |
| availableSpaceBefore = spaceBegin; |
| availableSpaceAfterBulkDelete = spaceBulk; |
| availableSpaceAfterDexopt = 0; |
| |
| importantPackageCount = important; |
| otherPackageCount = others; |
| |
| dexoptCommandCountTotal = mDexoptCommands.size(); |
| dexoptCommandCountExecuted = 0; |
| |
| otaDexoptTimeStart = System.nanoTime(); |
| } |
| |
| private static int inMegabytes(long value) { |
| long in_mega_bytes = value / (1024 * 1024); |
| if (in_mega_bytes > Integer.MAX_VALUE) { |
| Log.w(TAG, "Recording " + in_mega_bytes + "MB of free space, overflowing range"); |
| return Integer.MAX_VALUE; |
| } |
| return (int)in_mega_bytes; |
| } |
| |
| private void performMetricsLogging() { |
| long finalTime = System.nanoTime(); |
| |
| MetricsLogger.histogram(mContext, "ota_dexopt_available_space_before_mb", |
| inMegabytes(availableSpaceBefore)); |
| MetricsLogger.histogram(mContext, "ota_dexopt_available_space_after_bulk_delete_mb", |
| inMegabytes(availableSpaceAfterBulkDelete)); |
| MetricsLogger.histogram(mContext, "ota_dexopt_available_space_after_dexopt_mb", |
| inMegabytes(availableSpaceAfterDexopt)); |
| |
| MetricsLogger.histogram(mContext, "ota_dexopt_num_important_packages", |
| importantPackageCount); |
| MetricsLogger.histogram(mContext, "ota_dexopt_num_other_packages", otherPackageCount); |
| |
| MetricsLogger.histogram(mContext, "ota_dexopt_num_commands", dexoptCommandCountTotal); |
| MetricsLogger.histogram(mContext, "ota_dexopt_num_commands_executed", |
| dexoptCommandCountExecuted); |
| |
| final int elapsedTimeSeconds = |
| (int) TimeUnit.NANOSECONDS.toSeconds(finalTime - otaDexoptTimeStart); |
| MetricsLogger.histogram(mContext, "ota_dexopt_time_s", elapsedTimeSeconds); |
| } |
| |
| private static class OTADexoptPackageDexOptimizer extends |
| PackageDexOptimizer.ForcedUpdatePackageDexOptimizer { |
| public OTADexoptPackageDexOptimizer(Installer installer, Object installLock, |
| Context context) { |
| super(installer, installLock, context, "*otadexopt*"); |
| } |
| } |
| } |