PackageDexOptimizer.java revision 3bec94d78b0a66c4fa5cebd851ea33bcc51916b0
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.Context; 21import android.content.pm.ApplicationInfo; 22import android.content.pm.PackageParser; 23import android.os.FileUtils; 24import android.os.PowerManager; 25import android.os.SystemClock; 26import android.os.UserHandle; 27import android.os.WorkSource; 28import android.util.Log; 29import android.util.Slog; 30 31import com.android.internal.annotations.GuardedBy; 32import com.android.internal.util.IndentingPrintWriter; 33import com.android.server.pm.Installer.InstallerException; 34import com.android.server.pm.dex.DexoptOptions; 35import com.android.server.pm.dex.DexoptUtils; 36import com.android.server.pm.dex.PackageDexUsage; 37 38import java.io.File; 39import java.io.IOException; 40import java.util.ArrayList; 41import java.util.List; 42 43import dalvik.system.DexFile; 44 45import static com.android.server.pm.Installer.DEXOPT_BOOTCOMPLETE; 46import static com.android.server.pm.Installer.DEXOPT_DEBUGGABLE; 47import static com.android.server.pm.Installer.DEXOPT_PROFILE_GUIDED; 48import static com.android.server.pm.Installer.DEXOPT_PUBLIC; 49import static com.android.server.pm.Installer.DEXOPT_SECONDARY_DEX; 50import static com.android.server.pm.Installer.DEXOPT_FORCE; 51import static com.android.server.pm.Installer.DEXOPT_STORAGE_CE; 52import static com.android.server.pm.Installer.DEXOPT_STORAGE_DE; 53import static com.android.server.pm.InstructionSets.getAppDexInstructionSets; 54import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets; 55 56import static com.android.server.pm.PackageManagerService.WATCHDOG_TIMEOUT; 57 58import static dalvik.system.DexFile.getNonProfileGuidedCompilerFilter; 59import static dalvik.system.DexFile.getSafeModeCompilerFilter; 60import static dalvik.system.DexFile.isProfileGuidedCompilerFilter; 61 62/** 63 * Helper class for running dexopt command on packages. 64 */ 65public class PackageDexOptimizer { 66 private static final String TAG = "PackageManager.DexOptimizer"; 67 static final String OAT_DIR_NAME = "oat"; 68 // TODO b/19550105 Remove error codes and use exceptions 69 public static final int DEX_OPT_SKIPPED = 0; 70 public static final int DEX_OPT_PERFORMED = 1; 71 public static final int DEX_OPT_FAILED = -1; 72 // One minute over PM WATCHDOG_TIMEOUT 73 private static final long WAKELOCK_TIMEOUT_MS = WATCHDOG_TIMEOUT + 1000 * 60; 74 75 /** Special library name that skips shared libraries check during compilation. */ 76 public static final String SKIP_SHARED_LIBRARY_CHECK = "&"; 77 78 @GuardedBy("mInstallLock") 79 private final Installer mInstaller; 80 private final Object mInstallLock; 81 82 @GuardedBy("mInstallLock") 83 private final PowerManager.WakeLock mDexoptWakeLock; 84 private volatile boolean mSystemReady; 85 86 PackageDexOptimizer(Installer installer, Object installLock, Context context, 87 String wakeLockTag) { 88 this.mInstaller = installer; 89 this.mInstallLock = installLock; 90 91 PowerManager powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 92 mDexoptWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, wakeLockTag); 93 } 94 95 protected PackageDexOptimizer(PackageDexOptimizer from) { 96 this.mInstaller = from.mInstaller; 97 this.mInstallLock = from.mInstallLock; 98 this.mDexoptWakeLock = from.mDexoptWakeLock; 99 this.mSystemReady = from.mSystemReady; 100 } 101 102 static boolean canOptimizePackage(PackageParser.Package pkg) { 103 return (pkg.applicationInfo.flags & ApplicationInfo.FLAG_HAS_CODE) != 0; 104 } 105 106 /** 107 * Performs dexopt on all code paths and libraries of the specified package for specified 108 * instruction sets. 109 * 110 * <p>Calls to {@link com.android.server.pm.Installer#dexopt} on {@link #mInstaller} are 111 * synchronized on {@link #mInstallLock}. 112 */ 113 int performDexOpt(PackageParser.Package pkg, String[] sharedLibraries, 114 String[] instructionSets, CompilerStats.PackageStats packageStats, 115 boolean isUsedByOtherApps, DexoptOptions options) { 116 if (!canOptimizePackage(pkg)) { 117 return DEX_OPT_SKIPPED; 118 } 119 synchronized (mInstallLock) { 120 final long acquireTime = acquireWakeLockLI(pkg.applicationInfo.uid); 121 try { 122 return performDexOptLI(pkg, sharedLibraries, instructionSets, 123 packageStats, isUsedByOtherApps, options); 124 } finally { 125 releaseWakeLockLI(acquireTime); 126 } 127 } 128 } 129 130 /** 131 * Performs dexopt on all code paths of the given package. 132 * It assumes the install lock is held. 133 */ 134 @GuardedBy("mInstallLock") 135 private int performDexOptLI(PackageParser.Package pkg, String[] sharedLibraries, 136 String[] targetInstructionSets, CompilerStats.PackageStats packageStats, 137 boolean isUsedByOtherApps, DexoptOptions options) { 138 final String[] instructionSets = targetInstructionSets != null ? 139 targetInstructionSets : getAppDexInstructionSets(pkg.applicationInfo); 140 final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets); 141 final List<String> paths = pkg.getAllCodePaths(); 142 final int sharedGid = UserHandle.getSharedAppGid(pkg.applicationInfo.uid); 143 144 final String compilerFilter = getRealCompilerFilter(pkg.applicationInfo, 145 options.getCompilerFilter(), isUsedByOtherApps); 146 final boolean profileUpdated = options.isCheckForProfileUpdates() && 147 isProfileUpdated(pkg, sharedGid, compilerFilter); 148 149 // Get the dexopt flags after getRealCompilerFilter to make sure we get the correct flags. 150 final int dexoptFlags = getDexFlags(pkg, compilerFilter, options.isBootComplete()); 151 152 // Get the class loader context dependencies. 153 // For each code path in the package, this array contains the class loader context that 154 // needs to be passed to dexopt in order to ensure correct optimizations. 155 String[] classLoaderContexts = DexoptUtils.getClassLoaderContexts( 156 pkg.applicationInfo, sharedLibraries); 157 158 int result = DEX_OPT_SKIPPED; 159 for (int i = 0; i < paths.size(); i++) { 160 // Skip paths that have no code. 161 if ((i == 0 && (pkg.applicationInfo.flags & ApplicationInfo.FLAG_HAS_CODE) == 0) || 162 (i != 0 && (pkg.splitFlags[i - 1] & ApplicationInfo.FLAG_HAS_CODE) == 0)) { 163 continue; 164 } 165 // Append shared libraries with split dependencies for this split. 166 String path = paths.get(i); 167 if (options.getSplitName() != null) { 168 // We are asked to compile only a specific split. Check that the current path is 169 // what we are looking for. 170 if (!options.getSplitName().equals(new File(path).getName())) { 171 continue; 172 } 173 } 174 175 for (String dexCodeIsa : dexCodeInstructionSets) { 176 int newResult = dexOptPath(pkg, path, dexCodeIsa, compilerFilter, 177 profileUpdated, classLoaderContexts[i], dexoptFlags, sharedGid, 178 packageStats, options.isDowngrade()); 179 // The end result is: 180 // - FAILED if any path failed, 181 // - PERFORMED if at least one path needed compilation, 182 // - SKIPPED when all paths are up to date 183 if ((result != DEX_OPT_FAILED) && (newResult != DEX_OPT_SKIPPED)) { 184 result = newResult; 185 } 186 } 187 } 188 return result; 189 } 190 191 /** 192 * Performs dexopt on the {@code path} belonging to the package {@code pkg}. 193 * 194 * @return 195 * DEX_OPT_FAILED if there was any exception during dexopt 196 * DEX_OPT_PERFORMED if dexopt was performed successfully on the given path. 197 * DEX_OPT_SKIPPED if the path does not need to be deopt-ed. 198 */ 199 @GuardedBy("mInstallLock") 200 private int dexOptPath(PackageParser.Package pkg, String path, String isa, 201 String compilerFilter, boolean profileUpdated, String sharedLibrariesPath, 202 int dexoptFlags, int uid, CompilerStats.PackageStats packageStats, boolean downgrade) { 203 int dexoptNeeded = getDexoptNeeded(path, isa, compilerFilter, profileUpdated, downgrade); 204 if (Math.abs(dexoptNeeded) == DexFile.NO_DEXOPT_NEEDED) { 205 return DEX_OPT_SKIPPED; 206 } 207 208 // TODO(calin): there's no need to try to create the oat dir over and over again, 209 // especially since it involve an extra installd call. We should create 210 // if (if supported) on the fly during the dexopt call. 211 String oatDir = createOatDirIfSupported(pkg, isa); 212 213 Log.i(TAG, "Running dexopt (dexoptNeeded=" + dexoptNeeded + ") on: " + path 214 + " pkg=" + pkg.applicationInfo.packageName + " isa=" + isa 215 + " dexoptFlags=" + printDexoptFlags(dexoptFlags) 216 + " target-filter=" + compilerFilter + " oatDir=" + oatDir 217 + " sharedLibraries=" + sharedLibrariesPath); 218 219 try { 220 long startTime = System.currentTimeMillis(); 221 222 // TODO: Consider adding 2 different APIs for primary and secondary dexopt. 223 // installd only uses downgrade flag for secondary dex files and ignores it for 224 // primary dex files. 225 mInstaller.dexopt(path, uid, pkg.packageName, isa, dexoptNeeded, oatDir, dexoptFlags, 226 compilerFilter, pkg.volumeUuid, sharedLibrariesPath, pkg.applicationInfo.seInfo, 227 false /* downgrade*/); 228 229 if (packageStats != null) { 230 long endTime = System.currentTimeMillis(); 231 packageStats.setCompileTime(path, (int)(endTime - startTime)); 232 } 233 return DEX_OPT_PERFORMED; 234 } catch (InstallerException e) { 235 Slog.w(TAG, "Failed to dexopt", e); 236 return DEX_OPT_FAILED; 237 } 238 } 239 240 /** 241 * Performs dexopt on the secondary dex {@code path} belonging to the app {@code info}. 242 * 243 * @return 244 * DEX_OPT_FAILED if there was any exception during dexopt 245 * DEX_OPT_PERFORMED if dexopt was performed successfully on the given path. 246 * NOTE that DEX_OPT_PERFORMED for secondary dex files includes the case when the dex file 247 * didn't need an update. That's because at the moment we don't get more than success/failure 248 * from installd. 249 * 250 * TODO(calin): Consider adding return codes to installd dexopt invocation (rather than 251 * throwing exceptions). Or maybe make a separate call to installd to get DexOptNeeded, though 252 * that seems wasteful. 253 */ 254 public int dexOptSecondaryDexPath(ApplicationInfo info, String path, 255 PackageDexUsage.DexUseInfo dexUseInfo, DexoptOptions options) { 256 synchronized (mInstallLock) { 257 final long acquireTime = acquireWakeLockLI(info.uid); 258 try { 259 return dexOptSecondaryDexPathLI(info, path, dexUseInfo, options); 260 } finally { 261 releaseWakeLockLI(acquireTime); 262 } 263 } 264 } 265 266 @GuardedBy("mInstallLock") 267 private long acquireWakeLockLI(final int uid) { 268 // During boot the system doesn't need to instantiate and obtain a wake lock. 269 // PowerManager might not be ready, but that doesn't mean that we can't proceed with 270 // dexopt. 271 if (!mSystemReady) { 272 return -1; 273 } 274 mDexoptWakeLock.setWorkSource(new WorkSource(uid)); 275 mDexoptWakeLock.acquire(WAKELOCK_TIMEOUT_MS); 276 return SystemClock.elapsedRealtime(); 277 } 278 279 @GuardedBy("mInstallLock") 280 private void releaseWakeLockLI(final long acquireTime) { 281 if (acquireTime < 0) { 282 return; 283 } 284 try { 285 if (mDexoptWakeLock.isHeld()) { 286 mDexoptWakeLock.release(); 287 } 288 final long duration = SystemClock.elapsedRealtime() - acquireTime; 289 if (duration >= WAKELOCK_TIMEOUT_MS) { 290 Slog.wtf(TAG, "WakeLock " + mDexoptWakeLock.getTag() 291 + " time out. Operation took " + duration + " ms. Thread: " 292 + Thread.currentThread().getName()); 293 } 294 } catch (Exception e) { 295 Slog.wtf(TAG, "Error while releasing " + mDexoptWakeLock.getTag() + " lock", e); 296 } 297 } 298 299 @GuardedBy("mInstallLock") 300 private int dexOptSecondaryDexPathLI(ApplicationInfo info, String path, 301 PackageDexUsage.DexUseInfo dexUseInfo, DexoptOptions options) { 302 if (options.isDexoptOnlySharedDex() && !dexUseInfo.isUsedByOtherApps()) { 303 // We are asked to optimize only the dex files used by other apps and this is not 304 // on of them: skip it. 305 return DEX_OPT_SKIPPED; 306 } 307 308 String compilerFilter = getRealCompilerFilter(info, options.getCompilerFilter(), 309 dexUseInfo.isUsedByOtherApps()); 310 // Get the dexopt flags after getRealCompilerFilter to make sure we get the correct flags. 311 // Secondary dex files are currently not compiled at boot. 312 int dexoptFlags = getDexFlags(info, compilerFilter, /* bootComplete */ true) 313 | DEXOPT_SECONDARY_DEX; 314 // Check the app storage and add the appropriate flags. 315 if (info.deviceProtectedDataDir != null && 316 FileUtils.contains(info.deviceProtectedDataDir, path)) { 317 dexoptFlags |= DEXOPT_STORAGE_DE; 318 } else if (info.credentialProtectedDataDir != null && 319 FileUtils.contains(info.credentialProtectedDataDir, path)) { 320 dexoptFlags |= DEXOPT_STORAGE_CE; 321 } else { 322 Slog.e(TAG, "Could not infer CE/DE storage for package " + info.packageName); 323 return DEX_OPT_FAILED; 324 } 325 Log.d(TAG, "Running dexopt on: " + path 326 + " pkg=" + info.packageName + " isa=" + dexUseInfo.getLoaderIsas() 327 + " dexoptFlags=" + printDexoptFlags(dexoptFlags) 328 + " target-filter=" + compilerFilter); 329 330 String classLoaderContext; 331 if (dexUseInfo.isUnknownClassLoaderContext() || 332 dexUseInfo.isUnsupportedClassLoaderContext() || 333 dexUseInfo.isVariableClassLoaderContext()) { 334 // If we have an unknown (not yet set), unsupported (custom class loaders), or a 335 // variable class loader chain, compile without a context and mark the oat file with 336 // SKIP_SHARED_LIBRARY_CHECK. Note that his might lead to a incorrect compilation. 337 // TODO(calin): We should just extract in this case. 338 classLoaderContext = SKIP_SHARED_LIBRARY_CHECK; 339 } else { 340 classLoaderContext = dexUseInfo.getClassLoaderContext(); 341 } 342 try { 343 for (String isa : dexUseInfo.getLoaderIsas()) { 344 // Reuse the same dexopt path as for the primary apks. We don't need all the 345 // arguments as some (dexopNeeded and oatDir) will be computed by installd because 346 // system server cannot read untrusted app content. 347 // TODO(calin): maybe add a separate call. 348 mInstaller.dexopt(path, info.uid, info.packageName, isa, /*dexoptNeeded*/ 0, 349 /*oatDir*/ null, dexoptFlags, 350 compilerFilter, info.volumeUuid, classLoaderContext, info.seInfoUser, 351 options.isDowngrade()); 352 } 353 354 return DEX_OPT_PERFORMED; 355 } catch (InstallerException e) { 356 Slog.w(TAG, "Failed to dexopt", e); 357 return DEX_OPT_FAILED; 358 } 359 } 360 361 /** 362 * Adjust the given dexopt-needed value. Can be overridden to influence the decision to 363 * optimize or not (and in what way). 364 */ 365 protected int adjustDexoptNeeded(int dexoptNeeded) { 366 return dexoptNeeded; 367 } 368 369 /** 370 * Adjust the given dexopt flags that will be passed to the installer. 371 */ 372 protected int adjustDexoptFlags(int dexoptFlags) { 373 return dexoptFlags; 374 } 375 376 /** 377 * Dumps the dexopt state of the given package {@code pkg} to the given {@code PrintWriter}. 378 */ 379 void dumpDexoptState(IndentingPrintWriter pw, PackageParser.Package pkg) { 380 final String[] instructionSets = getAppDexInstructionSets(pkg.applicationInfo); 381 final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets); 382 383 final List<String> paths = pkg.getAllCodePathsExcludingResourceOnly(); 384 385 for (String instructionSet : dexCodeInstructionSets) { 386 pw.println("Instruction Set: " + instructionSet); 387 pw.increaseIndent(); 388 for (String path : paths) { 389 String status = null; 390 try { 391 status = DexFile.getDexFileStatus(path, instructionSet); 392 } catch (IOException ioe) { 393 status = "[Exception]: " + ioe.getMessage(); 394 } 395 pw.println("path: " + path); 396 pw.println("status: " + status); 397 } 398 pw.decreaseIndent(); 399 } 400 } 401 402 /** 403 * Returns the compiler filter that should be used to optimize the package code. 404 * The target filter will be updated if the package code is used by other apps 405 * or if it has the safe mode flag set. 406 */ 407 private String getRealCompilerFilter(ApplicationInfo info, String targetCompilerFilter, 408 boolean isUsedByOtherApps) { 409 int flags = info.flags; 410 boolean vmSafeMode = (flags & ApplicationInfo.FLAG_VM_SAFE_MODE) != 0; 411 if (vmSafeMode) { 412 return getSafeModeCompilerFilter(targetCompilerFilter); 413 } 414 415 if (isProfileGuidedCompilerFilter(targetCompilerFilter) && isUsedByOtherApps) { 416 // If the dex files is used by other apps, we cannot use profile-guided compilation. 417 return getNonProfileGuidedCompilerFilter(targetCompilerFilter); 418 } 419 420 return targetCompilerFilter; 421 } 422 423 /** 424 * Computes the dex flags that needs to be pass to installd for the given package and compiler 425 * filter. 426 */ 427 private int getDexFlags(PackageParser.Package pkg, String compilerFilter, 428 boolean bootComplete) { 429 return getDexFlags(pkg.applicationInfo, compilerFilter, bootComplete); 430 } 431 432 private int getDexFlags(ApplicationInfo info, String compilerFilter, boolean bootComplete) { 433 int flags = info.flags; 434 boolean debuggable = (flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 435 // Profile guide compiled oat files should not be public. 436 boolean isProfileGuidedFilter = isProfileGuidedCompilerFilter(compilerFilter); 437 boolean isPublic = !info.isForwardLocked() && !isProfileGuidedFilter; 438 int profileFlag = isProfileGuidedFilter ? DEXOPT_PROFILE_GUIDED : 0; 439 int dexFlags = 440 (isPublic ? DEXOPT_PUBLIC : 0) 441 | (debuggable ? DEXOPT_DEBUGGABLE : 0) 442 | profileFlag 443 | (bootComplete ? DEXOPT_BOOTCOMPLETE : 0); 444 return adjustDexoptFlags(dexFlags); 445 } 446 447 /** 448 * Assesses if there's a need to perform dexopt on {@code path} for the given 449 * configuration (isa, compiler filter, profile). 450 */ 451 private int getDexoptNeeded(String path, String isa, String compilerFilter, 452 boolean newProfile, boolean downgrade) { 453 int dexoptNeeded; 454 try { 455 dexoptNeeded = DexFile.getDexOptNeeded(path, isa, compilerFilter, newProfile, 456 downgrade); 457 } catch (IOException ioe) { 458 Slog.w(TAG, "IOException reading apk: " + path, ioe); 459 return DEX_OPT_FAILED; 460 } 461 return adjustDexoptNeeded(dexoptNeeded); 462 } 463 464 /** 465 * Checks if there is an update on the profile information of the {@code pkg}. 466 * If the compiler filter is not profile guided the method returns false. 467 * 468 * Note that this is a "destructive" operation with side effects. Under the hood the 469 * current profile and the reference profile will be merged and subsequent calls 470 * may return a different result. 471 */ 472 private boolean isProfileUpdated(PackageParser.Package pkg, int uid, String compilerFilter) { 473 // Check if we are allowed to merge and if the compiler filter is profile guided. 474 if (!isProfileGuidedCompilerFilter(compilerFilter)) { 475 return false; 476 } 477 // Merge profiles. It returns whether or not there was an updated in the profile info. 478 try { 479 return mInstaller.mergeProfiles(uid, pkg.packageName); 480 } catch (InstallerException e) { 481 Slog.w(TAG, "Failed to merge profiles", e); 482 } 483 return false; 484 } 485 486 /** 487 * Creates oat dir for the specified package if needed and supported. 488 * In certain cases oat directory 489 * <strong>cannot</strong> be created: 490 * <ul> 491 * <li>{@code pkg} is a system app, which is not updated.</li> 492 * <li>Package location is not a directory, i.e. monolithic install.</li> 493 * </ul> 494 * 495 * @return Absolute path to the oat directory or null, if oat directory 496 * cannot be created. 497 */ 498 @Nullable 499 private String createOatDirIfSupported(PackageParser.Package pkg, String dexInstructionSet) { 500 if (!pkg.canHaveOatDir()) { 501 return null; 502 } 503 File codePath = new File(pkg.codePath); 504 if (codePath.isDirectory()) { 505 // TODO(calin): why do we create this only if the codePath is a directory? (i.e for 506 // cluster packages). It seems that the logic for the folder creation is 507 // split between installd and here. 508 File oatDir = getOatDir(codePath); 509 try { 510 mInstaller.createOatDir(oatDir.getAbsolutePath(), dexInstructionSet); 511 } catch (InstallerException e) { 512 Slog.w(TAG, "Failed to create oat dir", e); 513 return null; 514 } 515 return oatDir.getAbsolutePath(); 516 } 517 return null; 518 } 519 520 static File getOatDir(File codePath) { 521 return new File(codePath, OAT_DIR_NAME); 522 } 523 524 void systemReady() { 525 mSystemReady = true; 526 } 527 528 private String printDexoptFlags(int flags) { 529 ArrayList<String> flagsList = new ArrayList<>(); 530 531 if ((flags & DEXOPT_BOOTCOMPLETE) == DEXOPT_BOOTCOMPLETE) { 532 flagsList.add("boot_complete"); 533 } 534 if ((flags & DEXOPT_DEBUGGABLE) == DEXOPT_DEBUGGABLE) { 535 flagsList.add("debuggable"); 536 } 537 if ((flags & DEXOPT_PROFILE_GUIDED) == DEXOPT_PROFILE_GUIDED) { 538 flagsList.add("profile_guided"); 539 } 540 if ((flags & DEXOPT_PUBLIC) == DEXOPT_PUBLIC) { 541 flagsList.add("public"); 542 } 543 if ((flags & DEXOPT_SECONDARY_DEX) == DEXOPT_SECONDARY_DEX) { 544 flagsList.add("secondary"); 545 } 546 if ((flags & DEXOPT_FORCE) == DEXOPT_FORCE) { 547 flagsList.add("force"); 548 } 549 if ((flags & DEXOPT_STORAGE_CE) == DEXOPT_STORAGE_CE) { 550 flagsList.add("storage_ce"); 551 } 552 if ((flags & DEXOPT_STORAGE_DE) == DEXOPT_STORAGE_DE) { 553 flagsList.add("storage_de"); 554 } 555 556 return String.join(",", flagsList); 557 } 558 559 /** 560 * A specialized PackageDexOptimizer that overrides already-installed checks, forcing a 561 * dexopt path. 562 */ 563 public static class ForcedUpdatePackageDexOptimizer extends PackageDexOptimizer { 564 565 public ForcedUpdatePackageDexOptimizer(Installer installer, Object installLock, 566 Context context, String wakeLockTag) { 567 super(installer, installLock, context, wakeLockTag); 568 } 569 570 public ForcedUpdatePackageDexOptimizer(PackageDexOptimizer from) { 571 super(from); 572 } 573 574 @Override 575 protected int adjustDexoptNeeded(int dexoptNeeded) { 576 if (dexoptNeeded == DexFile.NO_DEXOPT_NEEDED) { 577 // Ensure compilation by pretending a compiler filter change on the 578 // apk/odex location (the reason for the '-'. A positive value means 579 // the 'oat' location). 580 return -DexFile.DEX2OAT_FOR_FILTER; 581 } 582 return dexoptNeeded; 583 } 584 585 @Override 586 protected int adjustDexoptFlags(int flags) { 587 // Add DEXOPT_FORCE flag to signal installd that it should force compilation 588 // and discard dexoptanalyzer result. 589 return flags | DEXOPT_FORCE; 590 } 591 } 592} 593