PackageDexOptimizer.java revision 27c24fb8b85c36298de053699b1967a808c6d308
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.PowerManager; 24import android.os.UserHandle; 25import android.os.WorkSource; 26import android.util.ArraySet; 27import android.util.Log; 28import android.util.Slog; 29 30import java.io.File; 31import java.io.IOException; 32import java.util.ArrayList; 33import java.util.List; 34 35import dalvik.system.DexFile; 36 37import static com.android.server.pm.Installer.DEXOPT_BOOTCOMPLETE; 38import static com.android.server.pm.Installer.DEXOPT_DEBUGGABLE; 39import static com.android.server.pm.Installer.DEXOPT_PUBLIC; 40import static com.android.server.pm.Installer.DEXOPT_SAFEMODE; 41import static com.android.server.pm.Installer.DEXOPT_USEJIT; 42import static com.android.server.pm.InstructionSets.getAppDexInstructionSets; 43import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets; 44 45/** 46 * Helper class for running dexopt command on packages. 47 */ 48final class PackageDexOptimizer { 49 private static final String TAG = "PackageManager.DexOptimizer"; 50 static final String OAT_DIR_NAME = "oat"; 51 // TODO b/19550105 Remove error codes and use exceptions 52 static final int DEX_OPT_SKIPPED = 0; 53 static final int DEX_OPT_PERFORMED = 1; 54 static final int DEX_OPT_DEFERRED = 2; 55 static final int DEX_OPT_FAILED = -1; 56 57 private final PackageManagerService mPackageManagerService; 58 private ArraySet<PackageParser.Package> mDeferredDexOpt; 59 60 private final PowerManager.WakeLock mDexoptWakeLock; 61 private volatile boolean mSystemReady; 62 63 PackageDexOptimizer(PackageManagerService packageManagerService) { 64 this.mPackageManagerService = packageManagerService; 65 PowerManager powerManager = (PowerManager)packageManagerService.mContext.getSystemService( 66 Context.POWER_SERVICE); 67 mDexoptWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "*dexopt*"); 68 } 69 70 /** 71 * Performs dexopt on all code paths and libraries of the specified package for specified 72 * instruction sets. 73 * 74 * <p>Calls to {@link com.android.server.pm.Installer#dexopt} are synchronized on 75 * {@link PackageManagerService#mInstallLock}. 76 */ 77 int performDexOpt(PackageParser.Package pkg, String[] instructionSets, 78 boolean forceDex, boolean defer, boolean inclDependencies, 79 boolean bootComplete, boolean useJit) { 80 ArraySet<String> done; 81 if (inclDependencies && (pkg.usesLibraries != null || pkg.usesOptionalLibraries != null)) { 82 done = new ArraySet<String>(); 83 done.add(pkg.packageName); 84 } else { 85 done = null; 86 } 87 synchronized (mPackageManagerService.mInstallLock) { 88 final boolean useLock = mSystemReady; 89 if (useLock) { 90 mDexoptWakeLock.setWorkSource(new WorkSource(pkg.applicationInfo.uid)); 91 mDexoptWakeLock.acquire(); 92 } 93 try { 94 return performDexOptLI(pkg, instructionSets, forceDex, defer, bootComplete, 95 useJit, done); 96 } finally { 97 if (useLock) { 98 mDexoptWakeLock.release(); 99 } 100 } 101 } 102 } 103 104 private int performDexOptLI(PackageParser.Package pkg, String[] targetInstructionSets, 105 boolean forceDex, boolean defer, boolean bootComplete, boolean useJit, 106 ArraySet<String> done) { 107 final String[] instructionSets = targetInstructionSets != null ? 108 targetInstructionSets : getAppDexInstructionSets(pkg.applicationInfo); 109 110 if (done != null) { 111 done.add(pkg.packageName); 112 if (pkg.usesLibraries != null) { 113 performDexOptLibsLI(pkg.usesLibraries, instructionSets, forceDex, defer, 114 bootComplete, useJit, done); 115 } 116 if (pkg.usesOptionalLibraries != null) { 117 performDexOptLibsLI(pkg.usesOptionalLibraries, instructionSets, forceDex, defer, 118 bootComplete, useJit, done); 119 } 120 } 121 122 if ((pkg.applicationInfo.flags & ApplicationInfo.FLAG_HAS_CODE) == 0) { 123 return DEX_OPT_SKIPPED; 124 } 125 126 final boolean vmSafeMode = (pkg.applicationInfo.flags & ApplicationInfo.FLAG_VM_SAFE_MODE) != 0; 127 final boolean debuggable = (pkg.applicationInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0; 128 129 final List<String> paths = pkg.getAllCodePathsExcludingResourceOnly(); 130 boolean performedDexOpt = false; 131 // There are three basic cases here: 132 // 1.) we need to dexopt, either because we are forced or it is needed 133 // 2.) we are deferring a needed dexopt 134 // 3.) we are skipping an unneeded dexopt 135 final String[] dexCodeInstructionSets = getDexCodeInstructionSets(instructionSets); 136 for (String dexCodeInstructionSet : dexCodeInstructionSets) { 137 if (!forceDex && pkg.mDexOptPerformed.contains(dexCodeInstructionSet)) { 138 continue; 139 } 140 141 for (String path : paths) { 142 final int dexoptNeeded; 143 if (forceDex) { 144 dexoptNeeded = DexFile.DEX2OAT_NEEDED; 145 } else { 146 try { 147 dexoptNeeded = DexFile.getDexOptNeeded(path, pkg.packageName, 148 dexCodeInstructionSet, defer); 149 } catch (IOException ioe) { 150 Slog.w(TAG, "IOException reading apk: " + path, ioe); 151 return DEX_OPT_FAILED; 152 } 153 } 154 155 if (!forceDex && defer && dexoptNeeded != DexFile.NO_DEXOPT_NEEDED) { 156 // We're deciding to defer a needed dexopt. Don't bother dexopting for other 157 // paths and instruction sets. We'll deal with them all together when we process 158 // our list of deferred dexopts. 159 addPackageForDeferredDexopt(pkg); 160 return DEX_OPT_DEFERRED; 161 } 162 163 if (dexoptNeeded != DexFile.NO_DEXOPT_NEEDED) { 164 final String dexoptType; 165 String oatDir = null; 166 if (dexoptNeeded == DexFile.DEX2OAT_NEEDED) { 167 dexoptType = "dex2oat"; 168 oatDir = createOatDirIfSupported(pkg, dexCodeInstructionSet); 169 } else if (dexoptNeeded == DexFile.PATCHOAT_NEEDED) { 170 dexoptType = "patchoat"; 171 } else if (dexoptNeeded == DexFile.SELF_PATCHOAT_NEEDED) { 172 dexoptType = "self patchoat"; 173 } else { 174 throw new IllegalStateException("Invalid dexopt needed: " + dexoptNeeded); 175 } 176 177 Log.i(TAG, "Running dexopt (" + dexoptType + ") on: " + path + " pkg=" 178 + pkg.applicationInfo.packageName + " isa=" + dexCodeInstructionSet 179 + " vmSafeMode=" + vmSafeMode + " debuggable=" + debuggable 180 + " oatDir = " + oatDir + " bootComplete=" + bootComplete 181 + " useJit=" + useJit); 182 final int sharedGid = UserHandle.getSharedAppGid(pkg.applicationInfo.uid); 183 final int dexFlags = 184 (!pkg.isForwardLocked() ? DEXOPT_PUBLIC : 0) 185 | (vmSafeMode ? DEXOPT_SAFEMODE : 0) 186 | (debuggable ? DEXOPT_DEBUGGABLE : 0) 187 | (bootComplete ? DEXOPT_BOOTCOMPLETE : 0) 188 | (useJit ? DEXOPT_USEJIT : 0); 189 final int ret = mPackageManagerService.mInstaller.dexopt(path, sharedGid, 190 pkg.packageName, dexCodeInstructionSet, dexoptNeeded, oatDir, dexFlags); 191 192 // Dex2oat might fail due to compiler / verifier errors. We soldier on 193 // regardless, and attempt to interpret the app as a safety net. 194 if (ret == 0) { 195 performedDexOpt = true; 196 } 197 } 198 } 199 200 // At this point we haven't failed dexopt and we haven't deferred dexopt. We must 201 // either have either succeeded dexopt, or have had getDexOptNeeded tell us 202 // it isn't required. We therefore mark that this package doesn't need dexopt unless 203 // it's forced. performedDexOpt will tell us whether we performed dex-opt or skipped 204 // it. 205 pkg.mDexOptPerformed.add(dexCodeInstructionSet); 206 } 207 208 // If we've gotten here, we're sure that no error occurred and that we haven't 209 // deferred dex-opt. We've either dex-opted one more paths or instruction sets or 210 // we've skipped all of them because they are up to date. In both cases this 211 // package doesn't need dexopt any longer. 212 return performedDexOpt ? DEX_OPT_PERFORMED : DEX_OPT_SKIPPED; 213 } 214 215 /** 216 * Creates oat dir for the specified package. In certain cases oat directory 217 * <strong>cannot</strong> be created: 218 * <ul> 219 * <li>{@code pkg} is a system app, which is not updated.</li> 220 * <li>Package location is not a directory, i.e. monolithic install.</li> 221 * </ul> 222 * 223 * @return Absolute path to the oat directory or null, if oat directory 224 * cannot be created. 225 */ 226 @Nullable 227 private String createOatDirIfSupported(PackageParser.Package pkg, String dexInstructionSet) { 228 if (!pkg.canHaveOatDir()) { 229 return null; 230 } 231 File codePath = new File(pkg.codePath); 232 if (codePath.isDirectory()) { 233 File oatDir = getOatDir(codePath); 234 mPackageManagerService.mInstaller.createOatDir(oatDir.getAbsolutePath(), 235 dexInstructionSet); 236 return oatDir.getAbsolutePath(); 237 } 238 return null; 239 } 240 241 static File getOatDir(File codePath) { 242 return new File(codePath, OAT_DIR_NAME); 243 } 244 245 private void performDexOptLibsLI(ArrayList<String> libs, String[] instructionSets, 246 boolean forceDex, boolean defer, boolean bootComplete, boolean useJit, 247 ArraySet<String> done) { 248 for (String libName : libs) { 249 PackageParser.Package libPkg = mPackageManagerService.findSharedNonSystemLibrary( 250 libName); 251 if (libPkg != null && !done.contains(libName)) { 252 performDexOptLI(libPkg, instructionSets, forceDex, defer, bootComplete, useJit, done); 253 } 254 } 255 } 256 257 /** 258 * Clears set of deferred dexopt packages. 259 * @return content of dexopt set if it was not empty 260 */ 261 public ArraySet<PackageParser.Package> clearDeferredDexOptPackages() { 262 ArraySet<PackageParser.Package> result = mDeferredDexOpt; 263 mDeferredDexOpt = null; 264 return result; 265 } 266 267 public void addPackageForDeferredDexopt(PackageParser.Package pkg) { 268 if (mDeferredDexOpt == null) { 269 mDeferredDexOpt = new ArraySet<>(); 270 } 271 mDeferredDexOpt.add(pkg); 272 } 273 274 void systemReady() { 275 mSystemReady = true; 276 } 277} 278