PackageDexOptimizer.java revision b94c1657eb0140f7b91f5372a9f76de5a3d87e36
1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17package com.android.server.pm; 18 19import android.annotation.Nullable; 20import android.content.pm.ApplicationInfo; 21import android.content.pm.PackageParser; 22import android.os.UserHandle; 23import android.util.ArraySet; 24import android.util.Log; 25import android.util.Slog; 26 27import java.io.File; 28import java.io.FileNotFoundException; 29import java.io.IOException; 30import java.util.ArrayList; 31import java.util.List; 32 33import dalvik.system.DexFile; 34import dalvik.system.StaleDexCacheError; 35 36import static com.android.server.pm.InstructionSets.getAppDexInstructionSets; 37import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets; 38 39/** 40 * Helper class for running dexopt command on packages. 41 */ 42final class PackageDexOptimizer { 43 private static final String TAG = "PackageManager.DexOptimizer"; 44 static final String OAT_DIR_NAME = "oat"; 45 // TODO b/19550105 Remove error codes and use exceptions 46 static final int DEX_OPT_SKIPPED = 0; 47 static final int DEX_OPT_PERFORMED = 1; 48 static final int DEX_OPT_DEFERRED = 2; 49 static final int DEX_OPT_FAILED = -1; 50 51 private final PackageManagerService mPackageManagerService; 52 private ArraySet<PackageParser.Package> mDeferredDexOpt; 53 54 PackageDexOptimizer(PackageManagerService packageManagerService) { 55 this.mPackageManagerService = packageManagerService; 56 } 57 58 /** 59 * Performs dexopt on all code paths and libraries of the specified package for specified 60 * instruction sets. 61 * 62 * <p>Calls to {@link com.android.server.pm.Installer#dexopt} are synchronized on 63 * {@link PackageManagerService#mInstallLock}. 64 */ 65 int performDexOpt(PackageParser.Package pkg, String[] instructionSets, 66 boolean forceDex, boolean defer, boolean inclDependencies) { 67 ArraySet<String> done; 68 if (inclDependencies && (pkg.usesLibraries != null || pkg.usesOptionalLibraries != null)) { 69 done = new ArraySet<String>(); 70 done.add(pkg.packageName); 71 } else { 72 done = null; 73 } 74 synchronized (mPackageManagerService.mInstallLock) { 75 return performDexOptLI(pkg, instructionSets, forceDex, defer, done); 76 } 77 } 78 79 private int performDexOptLI(PackageParser.Package pkg, String[] targetInstructionSets, 80 boolean forceDex, boolean defer, ArraySet<String> done) { 81 final String[] instructionSets = targetInstructionSets != null ? 82 targetInstructionSets : getAppDexInstructionSets(pkg.applicationInfo); 83 84 if (done != null) { 85 done.add(pkg.packageName); 86 if (pkg.usesLibraries != null) { 87 performDexOptLibsLI(pkg.usesLibraries, instructionSets, forceDex, defer, done); 88 } 89 if (pkg.usesOptionalLibraries != null) { 90 performDexOptLibsLI(pkg.usesOptionalLibraries, instructionSets, forceDex, defer, 91 done); 92 } 93 } 94 95 if ((pkg.applicationInfo.flags & ApplicationInfo.FLAG_HAS_CODE) == 0) { 96 return DEX_OPT_SKIPPED; 97 } 98 99 final boolean vmSafeMode = (pkg.applicationInfo.flags & ApplicationInfo.FLAG_VM_SAFE_MODE) != 0; 100 final boolean debuggable = (pkg.applicationInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 101 102 final List<String> paths = pkg.getAllCodePathsExcludingResourceOnly(); 103 boolean performedDexOpt = false; 104 // There are three basic cases here: 105 // 1.) we need to dexopt, either because we are forced or it is needed 106 // 2.) we are deferring a needed dexopt 107 // 3.) we are skipping an unneeded dexopt 108 final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets); 109 for (String dexCodeInstructionSet : dexCodeInstructionSets) { 110 if (!forceDex && pkg.mDexOptPerformed.contains(dexCodeInstructionSet)) { 111 continue; 112 } 113 114 for (String path : paths) { 115 try { 116 // This will return DEXOPT_NEEDED if we either cannot find any odex file for this 117 // package or the one we find does not match the image checksum (i.e. it was 118 // compiled against an old image). It will return PATCHOAT_NEEDED if we can find a 119 // odex file and it matches the checksum of the image but not its base address, 120 // meaning we need to move it. 121 final byte isDexOptNeeded = DexFile.isDexOptNeededInternal(path, 122 pkg.packageName, dexCodeInstructionSet, defer); 123 if (forceDex || (!defer && isDexOptNeeded == DexFile.DEXOPT_NEEDED)) { 124 File oatDir = createOatDirIfSupported(pkg, dexCodeInstructionSet); 125 Log.i(TAG, "Running dexopt on: " + path + " pkg=" 126 + pkg.applicationInfo.packageName + " isa=" + dexCodeInstructionSet 127 + " vmSafeMode=" + vmSafeMode + " debuggable=" + debuggable 128 + " oatDir = " + oatDir); 129 final int sharedGid = UserHandle.getSharedAppGid(pkg.applicationInfo.uid); 130 131 if (oatDir != null) { 132 int ret = mPackageManagerService.mInstaller.dexopt( 133 path, sharedGid, !pkg.isForwardLocked(), pkg.packageName, 134 dexCodeInstructionSet, vmSafeMode, debuggable, 135 oatDir.getAbsolutePath()); 136 if (ret < 0) { 137 return DEX_OPT_FAILED; 138 } 139 } else { 140 final int ret = mPackageManagerService.mInstaller 141 .dexopt(path, sharedGid, 142 !pkg.isForwardLocked(), pkg.packageName, 143 dexCodeInstructionSet, 144 vmSafeMode, debuggable, null); 145 if (ret < 0) { 146 return DEX_OPT_FAILED; 147 } 148 } 149 150 performedDexOpt = true; 151 } else if (!defer && isDexOptNeeded == DexFile.PATCHOAT_NEEDED) { 152 Log.i(TAG, "Running patchoat on: " + pkg.applicationInfo.packageName); 153 final int sharedGid = UserHandle.getSharedAppGid(pkg.applicationInfo.uid); 154 final int ret = mPackageManagerService.mInstaller.patchoat(path, sharedGid, 155 !pkg.isForwardLocked(), pkg.packageName, dexCodeInstructionSet); 156 157 if (ret < 0) { 158 // Don't bother running patchoat again if we failed, it will probably 159 // just result in an error again. Also, don't bother dexopting for other 160 // paths & ISAs. 161 return DEX_OPT_FAILED; 162 } 163 164 performedDexOpt = true; 165 } 166 167 // We're deciding to defer a needed dexopt. Don't bother dexopting for other 168 // paths and instruction sets. We'll deal with them all together when we process 169 // our list of deferred dexopts. 170 if (defer && isDexOptNeeded != DexFile.UP_TO_DATE) { 171 addPackageForDeferredDexopt(pkg); 172 return DEX_OPT_DEFERRED; 173 } 174 } catch (FileNotFoundException e) { 175 Slog.w(TAG, "Apk not found for dexopt: " + path); 176 return DEX_OPT_FAILED; 177 } catch (IOException e) { 178 Slog.w(TAG, "IOException reading apk: " + path, e); 179 return DEX_OPT_FAILED; 180 } catch (StaleDexCacheError e) { 181 Slog.w(TAG, "StaleDexCacheError when reading apk: " + path, e); 182 return DEX_OPT_FAILED; 183 } catch (Exception e) { 184 Slog.w(TAG, "Exception when doing dexopt : ", e); 185 return DEX_OPT_FAILED; 186 } 187 } 188 189 // At this point we haven't failed dexopt and we haven't deferred dexopt. We must 190 // either have either succeeded dexopt, or have had isDexOptNeededInternal tell us 191 // it isn't required. We therefore mark that this package doesn't need dexopt unless 192 // it's forced. performedDexOpt will tell us whether we performed dex-opt or skipped 193 // it. 194 pkg.mDexOptPerformed.add(dexCodeInstructionSet); 195 } 196 197 // If we've gotten here, we're sure that no error occurred and that we haven't 198 // deferred dex-opt. We've either dex-opted one more paths or instruction sets or 199 // we've skipped all of them because they are up to date. In both cases this 200 // package doesn't need dexopt any longer. 201 return performedDexOpt ? DEX_OPT_PERFORMED : DEX_OPT_SKIPPED; 202 } 203 204 /** 205 * Creates oat dir for the specified package. In certain cases oat directory 206 * <strong>cannot</strong> be created: 207 * <ul> 208 * <li>{@code pkg} is a system app, which is not updated.</li> 209 * <li>Package location is not a directory, i.e. monolithic install.</li> 210 * </ul> 211 * 212 * @return oat directory or null, if oat directory cannot be created. 213 */ 214 @Nullable 215 private File createOatDirIfSupported(PackageParser.Package pkg, String dexInstructionSet) 216 throws IOException { 217 if (pkg.isSystemApp() && !pkg.isUpdatedSystemApp()) { 218 return null; 219 } 220 File codePath = new File(pkg.codePath); 221 if (codePath.isDirectory()) { 222 File oatDir = getOatDir(codePath); 223 mPackageManagerService.mInstaller.createOatDir(oatDir.getAbsolutePath(), 224 dexInstructionSet); 225 return oatDir; 226 } 227 return null; 228 } 229 230 static File getOatDir(File codePath) { 231 return new File(codePath, OAT_DIR_NAME); 232 } 233 234 private void performDexOptLibsLI(ArrayList<String> libs, String[] instructionSets, 235 boolean forceDex, boolean defer, ArraySet<String> done) { 236 for (String libName : libs) { 237 PackageParser.Package libPkg = mPackageManagerService.findSharedNonSystemLibrary( 238 libName); 239 if (libPkg != null && !done.contains(libName)) { 240 performDexOptLI(libPkg, instructionSets, forceDex, defer, done); 241 } 242 } 243 } 244 245 /** 246 * Clears set of deferred dexopt packages. 247 * @return content of dexopt set if it was not empty 248 */ 249 public ArraySet<PackageParser.Package> clearDeferredDexOptPackages() { 250 ArraySet<PackageParser.Package> result = mDeferredDexOpt; 251 mDeferredDexOpt = null; 252 return result; 253 } 254 255 public void addPackageForDeferredDexopt(PackageParser.Package pkg) { 256 if (mDeferredDexOpt == null) { 257 mDeferredDexOpt = new ArraySet<>(); 258 } 259 mDeferredDexOpt.add(pkg); 260 } 261} 262