PMS

aospxref.com/android-11.…

public static PackageManagerService main(Context context, Installer installer,
            boolean factoryTest, boolean onlyCore) {
        // Self-check for initial settings.
        PackageManagerServiceCompilerMapping.checkProperties();
        final TimingsTraceAndSlog t = new TimingsTraceAndSlog(TAG + "Timing",
                Trace.TRACE_TAG_PACKAGE_MANAGER);
        t.traceBegin("create package manager");
        final Object lock = new Object();
        final Object installLock = new Object();

        Injector injector = new Injector(
                context, lock, installer, installLock, new PackageAbiHelperImpl(),
                (i, pm) ->
                        new ComponentResolver(i.getUserManagerService(), pm.mPmInternal, lock),
                (i, pm) ->
                        PermissionManagerService.create(context, lock),
                (i, pm) ->
                        new UserManagerService(context, pm,
                                new UserDataPreparer(installer, installLock, context, onlyCore),
                                lock),
                (i, pm) ->
                        new Settings(Environment.getDataDirectory(),
                                i.getPermissionManagerServiceInternal().getPermissionSettings(),
                                lock),
                new Injector.LocalServicesProducer<>(ActivityTaskManagerInternal.class),
                new Injector.LocalServicesProducer<>(ActivityManagerInternal.class),
                new Injector.LocalServicesProducer<>(DeviceIdleInternal.class),
                new Injector.LocalServicesProducer<>(StorageManagerInternal.class),
                new Injector.LocalServicesProducer<>(NetworkPolicyManagerInternal.class),
                new Injector.LocalServicesProducer<>(PermissionPolicyInternal.class),
                new Injector.LocalServicesProducer<>(DeviceStorageMonitorInternal.class),
                new Injector.SystemServiceProducer<>(DisplayManager.class),
                new Injector.SystemServiceProducer<>(StorageManager.class),
                new Injector.SystemServiceProducer<>(AppOpsManager.class),
                (i, pm) -> AppsFilter.create(pm.mPmInternal, i),
                (i, pm) -> (PlatformCompat) ServiceManager.getService("platform_compat"));

        PackageManagerService m = new PackageManagerService(injector, onlyCore, factoryTest);
        t.traceEnd(); // "create package manager"

        injector.getCompatibility().registerListener(SELinuxMMAC.SELINUX_LATEST_CHANGES,
                packageName -> {
                    synchronized (m.mInstallLock) {
                        final AndroidPackage pkg;
                        final PackageSetting ps;
                        final SharedUserSetting sharedUser;
                        final String oldSeInfo;
                        synchronized (m.mLock) {
                            ps = m.mSettings.getPackageLPr(packageName);
                            if (ps == null) {
                                Slog.e(TAG, "Failed to find package setting " + packageName);
                                return;
                            }
                            pkg = ps.pkg;
                            sharedUser = ps.getSharedUser();
                            oldSeInfo = AndroidPackageUtils.getSeInfo(pkg, ps);
                        }

                        if (pkg == null) {
                            Slog.e(TAG, "Failed to find package " + packageName);
                            return;
                        }
                        final String newSeInfo = SELinuxMMAC.getSeInfo(pkg, sharedUser,
                                m.mInjector.getCompatibility());

                        if (!newSeInfo.equals(oldSeInfo)) {
                            Slog.i(TAG, "Updating seInfo for package " + packageName + " from: "
                                    + oldSeInfo + " to: " + newSeInfo);
                            ps.getPkgState().setOverrideSeInfo(newSeInfo);
                            m.prepareAppDataAfterInstallLIF(pkg);
                        }
                    }
                });

        m.installWhitelistedSystemPackages();
        ServiceManager.addService("package", m);
        final PackageManagerNative pmn = m.new PackageManagerNative();
        ServiceManager.addService("package_native", pmn);
        return m;
    }

PackageManagerNative Binder

private class PackageManagerNative extends IPackageManagerNative.Stub {
        @Override
        public void registerPackageChangeObserver(@NonNull IPackageChangeObserver observer) {
          synchronized (mPackageChangeObservers) {
            try {
                observer.asBinder().linkToDeath(
                    new PackageChangeObserverDeathRecipient(observer), 0);
            } catch (RemoteException e) {
              Log.e(TAG, e.getMessage());
            }
            mPackageChangeObservers.add(observer);
            Log.d(TAG, "Size of mPackageChangeObservers after registry is "
                + mPackageChangeObservers.size());
          }
        }

        @Override
        public void unregisterPackageChangeObserver(@NonNull IPackageChangeObserver observer) {
          synchronized (mPackageChangeObservers) {
            mPackageChangeObservers.remove(observer);
            Log.d(TAG, "Size of mPackageChangeObservers after unregistry is "
                + mPackageChangeObservers.size());
          }
        }

        @Override
        public String[] getAllPackages() {
            return PackageManagerService.this.getAllPackages().toArray(new String[0]);
        }

        @Override
        public String[] getNamesForUids(int[] uids) throws RemoteException {
            final String[] results = PackageManagerService.this.getNamesForUids(uids);
            // massage results so they can be parsed by the native binder
            for (int i = results.length - 1; i >= 0; --i) {
                if (results[i] == null) {
                    results[i] = "";
                }
            }
            return results;
        }

        // NB: this differentiates between preloads and sideloads
        @Override
        public String getInstallerForPackage(String packageName) throws RemoteException {
            final String installerName = getInstallerPackageName(packageName);
            if (!TextUtils.isEmpty(installerName)) {
                return installerName;
            }
            // differentiate between preload and sideload
            int callingUser = UserHandle.getUserId(Binder.getCallingUid());
            ApplicationInfo appInfo = getApplicationInfo(packageName,
                                    /*flags*/ 0,
                                    /*userId*/ callingUser);
            if (appInfo != null && (appInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
                return "preload";
            }
            return "";
        }

        @Override
        public long getVersionCodeForPackage(String packageName) throws RemoteException {
            try {
                int callingUser = UserHandle.getUserId(Binder.getCallingUid());
                PackageInfo pInfo = getPackageInfo(packageName, 0, callingUser);
                if (pInfo != null) {
                    return pInfo.getLongVersionCode();
                }
            } catch (Exception e) {
            }
            return 0;
        }

        @Override
        public int getTargetSdkVersionForPackage(String packageName)
                throws RemoteException {
            int callingUser = UserHandle.getUserId(Binder.getCallingUid());
            ApplicationInfo info = getApplicationInfo(packageName, 0, callingUser);
            if (info == null) {
                throw new RemoteException(
                        "Couldn't get ApplicationInfo for package " + packageName);
            }
            return info.targetSdkVersion;
        }

        @Override
        public boolean[] isAudioPlaybackCaptureAllowed(String[] packageNames)
                throws RemoteException {
            int callingUser = UserHandle.getUserId(Binder.getCallingUid());
            boolean[] results = new boolean[packageNames.length];
            for (int i = results.length - 1; i >= 0; --i) {
                ApplicationInfo appInfo = getApplicationInfo(packageNames[i], 0, callingUser);
                results[i] = appInfo == null ? false : appInfo.isAudioPlaybackCaptureAllowed();
            }
            return results;
        }

        @Override
        public int getLocationFlags(String packageName) throws RemoteException {
            int callingUser = UserHandle.getUserId(Binder.getCallingUid());
            ApplicationInfo appInfo = getApplicationInfo(packageName,
                    /*flags*/ 0,
                    /*userId*/ callingUser);
            if (appInfo == null) {
                throw new RemoteException(
                        "Couldn't get ApplicationInfo for package " + packageName);
            }
            return ((appInfo.isSystemApp() ? IPackageManagerNative.LOCATION_SYSTEM : 0)
                    | (appInfo.isVendor() ? IPackageManagerNative.LOCATION_VENDOR : 0)
                    | (appInfo.isProduct() ? IPackageManagerNative.LOCATION_PRODUCT : 0));
        }

        @Override
        public String getModuleMetadataPackageName() throws RemoteException {
            return PackageManagerService.this.mModuleInfoProvider.getPackageName();
        }
    }

/data/app

   /** Directory where installed applications are stored */
    private static final File sAppInstallDir =
            new File(Environment.getDataDirectory(), "app");

scanDirLI

  private void scanDirTracedLI(File scanDir, final int parseFlags, int scanFlags,
            long currentTime, PackageParser2 packageParser, ExecutorService executorService) {
        Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "scanDir [" + scanDir.getAbsolutePath() + "]");
        try {
            scanDirLI(scanDir, parseFlags, scanFlags, currentTime, packageParser, executorService);
        } finally {
            Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
        }
    }

    private void scanDirLI(File scanDir, int parseFlags, int scanFlags, long currentTime,
            PackageParser2 packageParser, ExecutorService executorService) {
        final File[] files = scanDir.listFiles();
        if (ArrayUtils.isEmpty(files)) {
            Log.d(TAG, "No files in app dir " + scanDir);
            return;
        }

        if (DEBUG_PACKAGE_SCANNING) {
            Log.d(TAG, "Scanning app dir " + scanDir + " scanFlags=" + scanFlags
                    + " flags=0x" + Integer.toHexString(parseFlags));
        }

        ParallelPackageParser parallelPackageParser =
                new ParallelPackageParser(packageParser, executorService);

        // Submit files for parsing in parallel
        int fileCount = 0;
        for (File file : files) {
            final boolean isPackage = (isApkFile(file) || file.isDirectory())
                    && !PackageInstallerService.isStageName(file.getName());
            if (!isPackage) {
                // Ignore entries which are not packages
                continue;
            }
            parallelPackageParser.submit(file, parseFlags);
            fileCount++;
        }

        // Process results one by one
        for (; fileCount > 0; fileCount--) {
            ParallelPackageParser.ParseResult parseResult = parallelPackageParser.take();
            Throwable throwable = parseResult.throwable;
            int errorCode = PackageManager.INSTALL_SUCCEEDED;

            if (throwable == null) {
                // TODO(toddke): move lower in the scan chain
                // Static shared libraries have synthetic package names
                if (parseResult.parsedPackage.isStaticSharedLibrary()) {
                    renameStaticSharedLibraryPackage(parseResult.parsedPackage);
                }
                try {
                    addForInitLI(parseResult.parsedPackage, parseFlags, scanFlags,
                            currentTime, null);
                } catch (PackageManagerException e) {
                    errorCode = e.error;
                    Slog.w(TAG, "Failed to scan " + parseResult.scanFile + ": " + e.getMessage());
                }
            } else if (throwable instanceof PackageParserException) {
                PackageParserException e = (PackageParserException)
                        throwable;
                errorCode = e.error;
                Slog.w(TAG, "Failed to parse " + parseResult.scanFile + ": " + e.getMessage());
            } else {
                throw new IllegalStateException("Unexpected exception occurred while parsing "
                        + parseResult.scanFile, throwable);
            }

            if ((scanFlags & SCAN_AS_APK_IN_APEX) != 0 && errorCode != INSTALL_SUCCEEDED) {
                mApexManager.reportErrorWithApkInApex(scanDir.getAbsolutePath());
            }

            // Delete invalid userdata apps
            if ((scanFlags & SCAN_AS_SYSTEM) == 0
                    && errorCode != PackageManager.INSTALL_SUCCEEDED) {
                logCriticalInfo(Log.WARN,
                        "Deleting invalid package at " + parseResult.scanFile);
                removeCodePathLI(parseResult.scanFile);
            }
        }
    }

parallelPackageParser.submit(file, parseFlags);

/**
     * Submits the file for parsing
     * @param scanFile file to scan
     * @param parseFlags parse flags
     */
    public void submit(File scanFile, int parseFlags) {
        mExecutorService.submit(() -> {
            ParseResult pr = new ParseResult();
            Trace.traceBegin(TRACE_TAG_PACKAGE_MANAGER, "parallel parsePackage [" + scanFile + "]");
            try {
                pr.scanFile = scanFile;
                pr.parsedPackage = parsePackage(scanFile, parseFlags);
            } catch (Throwable e) {
                pr.throwable = e;
            } finally {
                Trace.traceEnd(TRACE_TAG_PACKAGE_MANAGER);
            }
            try {
                mQueue.put(pr);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                // Propagate result to callers of take().
                // This is helpful to prevent main thread from getting stuck waiting on
                // ParallelPackageParser to finish in case of interruption
                mInterruptedInThread = Thread.currentThread().getName();
            }
        });
    }

    @VisibleForTesting
    protected ParsedPackage parsePackage(File scanFile, int parseFlags)
            throws PackageParser.PackageParserException {
        return mPackageParser.parsePackage(scanFile, parseFlags, true);
    }

mPackageParser.parsePackage(scanFile, parseFlags, true);

 static class ParseResult {

        ParsedPackage parsedPackage; // Parsed package
        File scanFile; // File that was parsed
        Throwable throwable; // Set if an error occurs during parsing

        @Override
        public String toString() {
            return "ParseResult{" +
                    "parsedPackage=" + parsedPackage +
                    ", scanFile=" + scanFile +
                    ", throwable=" + throwable +
                    '}';
        }
    }

Android 9

PackageParser

aospxref.com/android-9.0…

/**
     * Representation of a full package parsed from APK files on disk. A package
     * consists of a single base APK, and zero or more split APKs.
     */
    public final static class Package implements Parcelable {

        public String packageName;

        // The package name declared in the manifest as the package can be
        // renamed, for example static shared libs use synthetic package names.
        public String manifestPackageName;

        /** Names of any split APKs, ordered by parsed splitName */
        public String[] splitNames;

        // TODO: work towards making these paths invariant

        public String volumeUuid;

        /**
         * Path where this package was found on disk. For monolithic packages
         * this is path to single base APK file; for cluster packages this is
         * path to the cluster directory.
         */
        public String codePath;

        /** Path of base APK */
        public String baseCodePath;
        /** Paths of any split APKs, ordered by parsed splitName */
        public String[] splitCodePaths;

        /** Revision code of base APK */
        public int baseRevisionCode;
        /** Revision codes of any split APKs, ordered by parsed splitName */
        public int[] splitRevisionCodes;

        /** Flags of any split APKs; ordered by parsed splitName */
        public int[] splitFlags;

        /**
         * Private flags of any split APKs; ordered by parsed splitName.
         *
         * { @hide}
         */
        public int[] splitPrivateFlags;

        public boolean baseHardwareAccelerated;

        // For now we only support one application per package.
        public ApplicationInfo applicationInfo = new ApplicationInfo();

        public final ArrayList<Permission> permissions = new ArrayList<Permission>(0);
        public final ArrayList<PermissionGroup> permissionGroups = new ArrayList<PermissionGroup>(0);
        public final ArrayList<Activity> activities = new ArrayList<Activity>(0);
        public final ArrayList<Activity> receivers = new ArrayList<Activity>(0);
        public final ArrayList<Provider> providers = new ArrayList<Provider>(0);
        public final ArrayList<Service> services = new ArrayList<Service>(0);
        public final ArrayList<Instrumentation> instrumentation = new ArrayList<Instrumentation>(0);

        public final ArrayList<String> requestedPermissions = new ArrayList<String>();

        public ArrayList<String> protectedBroadcasts;

        public Package parentPackage;
        public ArrayList<Package> childPackages;

        public String staticSharedLibName = null;
        public long staticSharedLibVersion = 0;
        public ArrayList<String> libraryNames = null;
        public ArrayList<String> usesLibraries = null;
        public ArrayList<String> usesStaticLibraries = null;
        public long[] usesStaticLibrariesVersions = null;
        public String[][] usesStaticLibrariesCertDigests = null;
        public ArrayList<String> usesOptionalLibraries = null;
        public String[] usesLibraryFiles = null;

        public ArrayList<ActivityIntentInfo> preferredActivityFilters = null;

        public ArrayList<String> mOriginalPackages = null;
        public String mRealPackage = null;
        public ArrayList<String> mAdoptPermissions = null;

        // We store the application meta-data independently to avoid multiple unwanted references
        public Bundle mAppMetaData = null;

        // The version code declared for this package.
        public int mVersionCode;

        // The major version code declared for this package.
        public int mVersionCodeMajor;

        // Return long containing mVersionCode and mVersionCodeMajor.
        public long getLongVersionCode() {
            return PackageInfo.composeLongVersionCode(mVersionCodeMajor, mVersionCode);
        }

        // The version name declared for this package.
        public String mVersionName;

        // The shared user id that this package wants to use.
        public String mSharedUserId;

        // The shared user label that this package wants to use.
        public int mSharedUserLabel;

        // Signatures that were read from the package.
        @NonNull public SigningDetails mSigningDetails = SigningDetails.UNKNOWN;

        // For use by package manager service for quick lookup of
        // preferred up order.
        public int mPreferredOrder = 0;

        // For use by package manager to keep track of when a package was last used.
        public long[] mLastPackageUsageTimeInMills =
                new long[PackageManager.NOTIFY_PACKAGE_USE_REASONS_COUNT];

        // // User set enabled state.
        // public int mSetEnabled = PackageManager.COMPONENT_ENABLED_STATE_DEFAULT;
        //
        // // Whether the package has been stopped.
        // public boolean mSetStopped = false;

        // Additional data supplied by callers.
        public Object mExtras;

        // Applications hardware preferences
        public ArrayList<ConfigurationInfo> configPreferences = null;

        // Applications requested features
        public ArrayList<FeatureInfo> reqFeatures = null;

        // Applications requested feature groups
        public ArrayList<FeatureGroupInfo> featureGroups = null;

        public int installLocation;

        public boolean coreApp;

        /* An app that's required for all users and cannot be uninstalled for a user */
        public boolean mRequiredForAllUsers;

        /* The restricted account authenticator type that is used by this application */
        public String mRestrictedAccountType;

        /* The required account type without which this application will not function */
        public String mRequiredAccountType;

        public String mOverlayTarget;
        public String mOverlayCategory;
        public int mOverlayPriority;
        public boolean mOverlayIsStatic;

        public int mCompileSdkVersion;
        public String mCompileSdkVersionCodename;

        /**
         * Data used to feed the KeySetManagerService
         */
        public ArraySet<String> mUpgradeKeySets;
        public ArrayMap<String, ArraySet<PublicKey>> mKeySetMapping;

        /**
         * The install time abi override for this package, if any.
         *
         * TODO: This seems like a horrible place to put the abiOverride because
         * this isn't something the packageParser parsers. However, this fits in with
         * the rest of the PackageManager where package scanning randomly pushes
         * and prods fields out of { @code this.applicationInfo}.
         */
        public String cpuAbiOverride;
        /**
         * The install time abi override to choose 32bit abi's when multiple abi's
         * are present. This is only meaningfull for multiarch applications.
         * The use32bitAbi attribute is ignored if cpuAbiOverride is also set.
         */
        public boolean use32bitAbi;

        public byte[] restrictUpdateHash;

        /** Set if the app or any of its components are visible to instant applications. */
        public boolean visibleToInstantApps;
        /** Whether or not the package is a stub and must be replaced by the full version. */
        public boolean isStub;

        public Package(String packageName) {
            this.packageName = packageName;
            this.manifestPackageName = packageName;
            applicationInfo.packageName = packageName;
            applicationInfo.uid = -1;
        }

        public void setApplicationVolumeUuid(String volumeUuid) {
            final UUID storageUuid = StorageManager.convert(volumeUuid);
            this.applicationInfo.volumeUuid = volumeUuid;
            this.applicationInfo.storageUuid = storageUuid;
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).applicationInfo.volumeUuid = volumeUuid;
                    childPackages.get(i).applicationInfo.storageUuid = storageUuid;
                }
            }
        }

        public void setApplicationInfoCodePath(String codePath) {
            this.applicationInfo.setCodePath(codePath);
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).applicationInfo.setCodePath(codePath);
                }
            }
        }

        /** @deprecated Forward locked apps no longer supported. Resource path not needed. */
        @Deprecated
        public void setApplicationInfoResourcePath(String resourcePath) {
            this.applicationInfo.setResourcePath(resourcePath);
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).applicationInfo.setResourcePath(resourcePath);
                }
            }
        }

        /** @deprecated Forward locked apps no longer supported. Resource path not needed. */
        @Deprecated
        public void setApplicationInfoBaseResourcePath(String resourcePath) {
            this.applicationInfo.setBaseResourcePath(resourcePath);
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).applicationInfo.setBaseResourcePath(resourcePath);
                }
            }
        }

        public void setApplicationInfoBaseCodePath(String baseCodePath) {
            this.applicationInfo.setBaseCodePath(baseCodePath);
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).applicationInfo.setBaseCodePath(baseCodePath);
                }
            }
        }

        public List<String> getChildPackageNames() {
            if (childPackages == null) {
                return null;
            }
            final int childCount = childPackages.size();
            final List<String> childPackageNames = new ArrayList<>(childCount);
            for (int i = 0; i < childCount; i++) {
                String childPackageName = childPackages.get(i).packageName;
                childPackageNames.add(childPackageName);
            }
            return childPackageNames;
        }

        public boolean hasChildPackage(String packageName) {
            final int childCount = (childPackages != null) ? childPackages.size() : 0;
            for (int i = 0; i < childCount; i++) {
                if (childPackages.get(i).packageName.equals(packageName)) {
                    return true;
                }
            }
            return false;
        }

        public void setApplicationInfoSplitCodePaths(String[] splitCodePaths) {
            this.applicationInfo.setSplitCodePaths(splitCodePaths);
            // Children have no splits
        }

        /** @deprecated Forward locked apps no longer supported. Resource path not needed. */
        @Deprecated
        public void setApplicationInfoSplitResourcePaths(String[] resroucePaths) {
            this.applicationInfo.setSplitResourcePaths(resroucePaths);
            // Children have no splits
        }

        public void setSplitCodePaths(String[] codePaths) {
            this.splitCodePaths = codePaths;
        }

        public void setCodePath(String codePath) {
            this.codePath = codePath;
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).codePath = codePath;
                }
            }
        }

        public void setBaseCodePath(String baseCodePath) {
            this.baseCodePath = baseCodePath;
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).baseCodePath = baseCodePath;
                }
            }
        }

        /** Sets signing details on the package and any of its children. */
        public void setSigningDetails(@NonNull SigningDetails signingDetails) {
            mSigningDetails = signingDetails;
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).mSigningDetails = signingDetails;
                }
            }
        }

        public void setVolumeUuid(String volumeUuid) {
            this.volumeUuid = volumeUuid;
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).volumeUuid = volumeUuid;
                }
            }
        }

        public void setApplicationInfoFlags(int mask, int flags) {
            applicationInfo.flags = (applicationInfo.flags & ~mask) | (mask & flags);
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).applicationInfo.flags =
                            (applicationInfo.flags & ~mask) | (mask & flags);
                }
            }
        }

        public void setUse32bitAbi(boolean use32bitAbi) {
            this.use32bitAbi = use32bitAbi;
            if (childPackages != null) {
                final int packageCount = childPackages.size();
                for (int i = 0; i < packageCount; i++) {
                    childPackages.get(i).use32bitAbi = use32bitAbi;
                }
            }
        }

        public boolean isLibrary() {
            return staticSharedLibName != null || !ArrayUtils.isEmpty(libraryNames);
        }

        public List<String> getAllCodePaths() {
            ArrayList<String> paths = new ArrayList<>();
            paths.add(baseCodePath);
            if (!ArrayUtils.isEmpty(splitCodePaths)) {
                Collections.addAll(paths, splitCodePaths);
            }
            return paths;
        }

        /**
         * Filtered set of { @link #getAllCodePaths()} that excludes
         * resource-only APKs.
         */
        public List<String> getAllCodePathsExcludingResourceOnly() {
            ArrayList<String> paths = new ArrayList<>();
            if ((applicationInfo.flags & ApplicationInfo.FLAG_HAS_CODE) != 0) {
                paths.add(baseCodePath);
            }
            if (!ArrayUtils.isEmpty(splitCodePaths)) {
                for (int i = 0; i < splitCodePaths.length; i++) {
                    if ((splitFlags[i] & ApplicationInfo.FLAG_HAS_CODE) != 0) {
                        paths.add(splitCodePaths[i]);
                    }
                }
            }
            return paths;
        }

        public void setPackageName(String newName) {
            packageName = newName;
            applicationInfo.packageName = newName;
            for (int i=permissions.size()-1; i>=0; i--) {
                permissions.get(i).setPackageName(newName);
            }
            for (int i=permissionGroups.size()-1; i>=0; i--) {
                permissionGroups.get(i).setPackageName(newName);
            }
            for (int i=activities.size()-1; i>=0; i--) {
                activities.get(i).setPackageName(newName);
            }
            for (int i=receivers.size()-1; i>=0; i--) {
                receivers.get(i).setPackageName(newName);
            }
            for (int i=providers.size()-1; i>=0; i--) {
                providers.get(i).setPackageName(newName);
            }
            for (int i=services.size()-1; i>=0; i--) {
                services.get(i).setPackageName(newName);
            }
            for (int i=instrumentation.size()-1; i>=0; i--) {
                instrumentation.get(i).setPackageName(newName);
            }
        }

        public boolean hasComponentClassName(String name) {
            for (int i=activities.size()-1; i>=0; i--) {
                if (name.equals(activities.get(i).className)) {
                    return true;
                }
            }
            for (int i=receivers.size()-1; i>=0; i--) {
                if (name.equals(receivers.get(i).className)) {
                    return true;
                }
            }
            for (int i=providers.size()-1; i>=0; i--) {
                if (name.equals(providers.get(i).className)) {
                    return true;
                }
            }
            for (int i=services.size()-1; i>=0; i--) {
                if (name.equals(services.get(i).className)) {
                    return true;
                }
            }
            for (int i=instrumentation.size()-1; i>=0; i--) {
                if (name.equals(instrumentation.get(i).className)) {
                    return true;
                }
            }
            return false;
        }

        /** @hide */
        public boolean isExternal() {
            return applicationInfo.isExternal();
        }

        /** @hide */
        public boolean isForwardLocked() {
            return applicationInfo.isForwardLocked();
        }

        /** @hide */
        public boolean isOem() {
            return applicationInfo.isOem();
        }

        /** @hide */
        public boolean isVendor() {
            return applicationInfo.isVendor();
        }

        /** @hide */
        public boolean isProduct() {
            return applicationInfo.isProduct();
        }

        /** @hide */
        public boolean isPrivileged() {
            return applicationInfo.isPrivilegedApp();
        }

        /** @hide */
        public boolean isSystem() {
            return applicationInfo.isSystemApp();
        }

        /** @hide */
        public boolean isUpdatedSystemApp() {
            return applicationInfo.isUpdatedSystemApp();
        }

        /** @hide */
        public boolean canHaveOatDir() {
            // The following app types CANNOT have oat directory
            // - non-updated system apps
            // - forward-locked apps or apps installed in ASEC containers
            return (!isSystem() || isUpdatedSystemApp())
                    && !isForwardLocked() && !applicationInfo.isExternalAsec();
        }

        public boolean isMatch(int flags) {
            if ((flags & PackageManager.MATCH_SYSTEM_ONLY) != 0) {
                return isSystem();
            }
            return true;
        }

        public long getLatestPackageUseTimeInMills() {
            long latestUse = 0L;
            for (long use : mLastPackageUsageTimeInMills) {
                latestUse = Math.max(latestUse, use);
            }
            return latestUse;
        }

        public long getLatestForegroundPackageUseTimeInMills() {
            int[] foregroundReasons = {
                PackageManager.NOTIFY_PACKAGE_USE_ACTIVITY,
                PackageManager.NOTIFY_PACKAGE_USE_FOREGROUND_SERVICE
            };

            long latestUse = 0L;
            for (int reason : foregroundReasons) {
                latestUse = Math.max(latestUse, mLastPackageUsageTimeInMills[reason]);
            }
            return latestUse;
        }

        public String toString() {
            return "Package{"
                + Integer.toHexString(System.identityHashCode(this))
                + " " + packageName + "}";
        }

        @Override
        public int describeContents() {
            return 0;
        }

        public Package(Parcel dest) {
            // We use the boot classloader for all classes that we load.
            final ClassLoader boot = Object.class.getClassLoader();

            packageName = dest.readString().intern();
            manifestPackageName = dest.readString();
            splitNames = dest.readStringArray();
            volumeUuid = dest.readString();
            codePath = dest.readString();
            baseCodePath = dest.readString();
            splitCodePaths = dest.readStringArray();
            baseRevisionCode = dest.readInt();
            splitRevisionCodes = dest.createIntArray();
            splitFlags = dest.createIntArray();
            splitPrivateFlags = dest.createIntArray();
            baseHardwareAccelerated = (dest.readInt() == 1);
            applicationInfo = dest.readParcelable(boot);
            if (applicationInfo.permission != null) {
                applicationInfo.permission = applicationInfo.permission.intern();
            }

            // We don't serialize the "owner" package and the application info object for each of
            // these components, in order to save space and to avoid circular dependencies while
            // serialization. We need to fix them all up here.
            dest.readParcelableList(permissions, boot);
            fixupOwner(permissions);
            dest.readParcelableList(permissionGroups, boot);
            fixupOwner(permissionGroups);
            dest.readParcelableList(activities, boot);
            fixupOwner(activities);
            dest.readParcelableList(receivers, boot);
            fixupOwner(receivers);
            dest.readParcelableList(providers, boot);
            fixupOwner(providers);
            dest.readParcelableList(services, boot);
            fixupOwner(services);
            dest.readParcelableList(instrumentation, boot);
            fixupOwner(instrumentation);

            dest.readStringList(requestedPermissions);
            internStringArrayList(requestedPermissions);
            protectedBroadcasts = dest.createStringArrayList();
            internStringArrayList(protectedBroadcasts);

            parentPackage = dest.readParcelable(boot);

            childPackages = new ArrayList<>();
            dest.readParcelableList(childPackages, boot);
            if (childPackages.size() == 0) {
                childPackages = null;
            }

            staticSharedLibName = dest.readString();
            if (staticSharedLibName != null) {
                staticSharedLibName = staticSharedLibName.intern();
            }
            staticSharedLibVersion = dest.readLong();
            libraryNames = dest.createStringArrayList();
            internStringArrayList(libraryNames);
            usesLibraries = dest.createStringArrayList();
            internStringArrayList(usesLibraries);
            usesOptionalLibraries = dest.createStringArrayList();
            internStringArrayList(usesOptionalLibraries);
            usesLibraryFiles = dest.readStringArray();

            final int libCount = dest.readInt();
            if (libCount > 0) {
                usesStaticLibraries = new ArrayList<>(libCount);
                dest.readStringList(usesStaticLibraries);
                internStringArrayList(usesStaticLibraries);
                usesStaticLibrariesVersions = new long[libCount];
                dest.readLongArray(usesStaticLibrariesVersions);
                usesStaticLibrariesCertDigests = new String[libCount][];
                for (int i = 0; i < libCount; i++) {
                    usesStaticLibrariesCertDigests[i] = dest.createStringArray();
                }
            }

            preferredActivityFilters = new ArrayList<>();
            dest.readParcelableList(preferredActivityFilters, boot);
            if (preferredActivityFilters.size() == 0) {
                preferredActivityFilters = null;
            }

            mOriginalPackages = dest.createStringArrayList();
            mRealPackage = dest.readString();
            mAdoptPermissions = dest.createStringArrayList();
            mAppMetaData = dest.readBundle();
            mVersionCode = dest.readInt();
            mVersionCodeMajor = dest.readInt();
            mVersionName = dest.readString();
            if (mVersionName != null) {
                mVersionName = mVersionName.intern();
            }
            mSharedUserId = dest.readString();
            if (mSharedUserId != null) {
                mSharedUserId = mSharedUserId.intern();
            }
            mSharedUserLabel = dest.readInt();

            mSigningDetails = dest.readParcelable(boot);

            mPreferredOrder = dest.readInt();

            // long[] packageUsageTimeMillis is not persisted because it isn't information that
            // is parsed from the APK.

            // Object mExtras is not persisted because it is not information that is read from
            // the APK, rather, it is supplied by callers.


            configPreferences = new ArrayList<>();
            dest.readParcelableList(configPreferences, boot);
            if (configPreferences.size() == 0) {
                configPreferences = null;
            }

            reqFeatures = new ArrayList<>();
            dest.readParcelableList(reqFeatures, boot);
            if (reqFeatures.size() == 0) {
                reqFeatures = null;
            }

            featureGroups = new ArrayList<>();
            dest.readParcelableList(featureGroups, boot);
            if (featureGroups.size() == 0) {
                featureGroups = null;
            }

            installLocation = dest.readInt();
            coreApp = (dest.readInt() == 1);
            mRequiredForAllUsers = (dest.readInt() == 1);
            mRestrictedAccountType = dest.readString();
            mRequiredAccountType = dest.readString();
            mOverlayTarget = dest.readString();
            mOverlayCategory = dest.readString();
            mOverlayPriority = dest.readInt();
            mOverlayIsStatic = (dest.readInt() == 1);
            mCompileSdkVersion = dest.readInt();
            mCompileSdkVersionCodename = dest.readString();
            mUpgradeKeySets = (ArraySet<String>) dest.readArraySet(boot);

            mKeySetMapping = readKeySetMapping(dest);

            cpuAbiOverride = dest.readString();
            use32bitAbi = (dest.readInt() == 1);
            restrictUpdateHash = dest.createByteArray();
            visibleToInstantApps = dest.readInt() == 1;
        }

        private static void internStringArrayList(List<String> list) {
            if (list != null) {
                final int N = list.size();
                for (int i = 0; i < N; ++i) {
                    list.set(i, list.get(i).intern());
                }
            }
        }

        /**
         * Sets the package owner and the the { @code applicationInfo} for every component
         * owner by this package.
         */
        private void fixupOwner(List<? extends Component<?>> list) {
            if (list != null) {
                for (Component<?> c : list) {
                    c.owner = this;
                    if (c instanceof Activity) {
                        ((Activity) c).info.applicationInfo = this.applicationInfo;
                    } else if (c instanceof Service) {
                        ((Service) c).info.applicationInfo = this.applicationInfo;
                    } else if (c instanceof Provider) {
                        ((Provider) c).info.applicationInfo = this.applicationInfo;
                    }
                }
            }
        }

        @Override
        public void writeToParcel(Parcel dest, int flags) {
            dest.writeString(packageName);
            dest.writeString(manifestPackageName);
            dest.writeStringArray(splitNames);
            dest.writeString(volumeUuid);
            dest.writeString(codePath);
            dest.writeString(baseCodePath);
            dest.writeStringArray(splitCodePaths);
            dest.writeInt(baseRevisionCode);
            dest.writeIntArray(splitRevisionCodes);
            dest.writeIntArray(splitFlags);
            dest.writeIntArray(splitPrivateFlags);
            dest.writeInt(baseHardwareAccelerated ? 1 : 0);
            dest.writeParcelable(applicationInfo, flags);

            dest.writeParcelableList(permissions, flags);
            dest.writeParcelableList(permissionGroups, flags);
            dest.writeParcelableList(activities, flags);
            dest.writeParcelableList(receivers, flags);
            dest.writeParcelableList(providers, flags);
            dest.writeParcelableList(services, flags);
            dest.writeParcelableList(instrumentation, flags);

            dest.writeStringList(requestedPermissions);
            dest.writeStringList(protectedBroadcasts);

            // TODO: This doesn't work: b/64295061
            dest.writeParcelable(parentPackage, flags);
            dest.writeParcelableList(childPackages, flags);

            dest.writeString(staticSharedLibName);
            dest.writeLong(staticSharedLibVersion);
            dest.writeStringList(libraryNames);
            dest.writeStringList(usesLibraries);
            dest.writeStringList(usesOptionalLibraries);
            dest.writeStringArray(usesLibraryFiles);

            if (ArrayUtils.isEmpty(usesStaticLibraries)) {
                dest.writeInt(-1);
            } else {
                dest.writeInt(usesStaticLibraries.size());
                dest.writeStringList(usesStaticLibraries);
                dest.writeLongArray(usesStaticLibrariesVersions);
                for (String[] usesStaticLibrariesCertDigest : usesStaticLibrariesCertDigests) {
                    dest.writeStringArray(usesStaticLibrariesCertDigest);
                }
            }

            dest.writeParcelableList(preferredActivityFilters, flags);

            dest.writeStringList(mOriginalPackages);
            dest.writeString(mRealPackage);
            dest.writeStringList(mAdoptPermissions);
            dest.writeBundle(mAppMetaData);
            dest.writeInt(mVersionCode);
            dest.writeInt(mVersionCodeMajor);
            dest.writeString(mVersionName);
            dest.writeString(mSharedUserId);
            dest.writeInt(mSharedUserLabel);

            dest.writeParcelable(mSigningDetails, flags);

            dest.writeInt(mPreferredOrder);

            // long[] packageUsageTimeMillis is not persisted because it isn't information that
            // is parsed from the APK.

            // Object mExtras is not persisted because it is not information that is read from
            // the APK, rather, it is supplied by callers.

            dest.writeParcelableList(configPreferences, flags);
            dest.writeParcelableList(reqFeatures, flags);
            dest.writeParcelableList(featureGroups, flags);

            dest.writeInt(installLocation);
            dest.writeInt(coreApp ? 1 : 0);
            dest.writeInt(mRequiredForAllUsers ? 1 : 0);
            dest.writeString(mRestrictedAccountType);
            dest.writeString(mRequiredAccountType);
            dest.writeString(mOverlayTarget);
            dest.writeString(mOverlayCategory);
            dest.writeInt(mOverlayPriority);
            dest.writeInt(mOverlayIsStatic ? 1 : 0);
            dest.writeInt(mCompileSdkVersion);
            dest.writeString(mCompileSdkVersionCodename);
            dest.writeArraySet(mUpgradeKeySets);
            writeKeySetMapping(dest, mKeySetMapping);
            dest.writeString(cpuAbiOverride);
            dest.writeInt(use32bitAbi ? 1 : 0);
            dest.writeByteArray(restrictUpdateHash);
            dest.writeInt(visibleToInstantApps ? 1 : 0);
        }


        /**
         * Writes the keyset mapping to the provided package. { @code null} mappings are permitted.
         */
        private static void writeKeySetMapping(
                Parcel dest, ArrayMap<String, ArraySet<PublicKey>> keySetMapping) {
            if (keySetMapping == null) {
                dest.writeInt(-1);
                return;
            }

            final int N = keySetMapping.size();
            dest.writeInt(N);

            for (int i = 0; i < N; i++) {
                dest.writeString(keySetMapping.keyAt(i));
                ArraySet<PublicKey> keys = keySetMapping.valueAt(i);
                if (keys == null) {
                    dest.writeInt(-1);
                    continue;
                }

                final int M = keys.size();
                dest.writeInt(M);
                for (int j = 0; j < M; j++) {
                    dest.writeSerializable(keys.valueAt(j));
                }
            }
        }

        /**
         * Reads a keyset mapping from the given parcel at the given data position. May return
         * { @code null} if the serialized mapping was { @code null}.
         */
        private static ArrayMap<String, ArraySet<PublicKey>> readKeySetMapping(Parcel in) {
            final int N = in.readInt();
            if (N == -1) {
                return null;
            }

            ArrayMap<String, ArraySet<PublicKey>> keySetMapping = new ArrayMap<>();
            for (int i = 0; i < N; ++i) {
                String key = in.readString();
                final int M = in.readInt();
                if (M == -1) {
                    keySetMapping.put(key, null);
                    continue;
                }

                ArraySet<PublicKey> keys = new ArraySet<>(M);
                for (int j = 0; j < M; ++j) {
                    PublicKey pk = (PublicKey) in.readSerializable();
                    keys.add(pk);
                }

                keySetMapping.put(key, keys);
            }

            return keySetMapping;
        }

        public static final Parcelable.Creator CREATOR = new Parcelable.Creator<Package>() {
            public Package createFromParcel(Parcel in) {
                return new Package(in);
            }

            public Package[] newArray(int size) {
                return new Package[size];
            }
        };
    }

DexFile