Register resources paths for shared library in runtime (209523a5) · Commits · e / os / android_frameworks_base

AconfigFlags.bp

+7 −0

Original line number	Diff line number	Diff line
		@@ -483,6 +483,13 @@ java_aconfig_library {
		defaults: ["framework-minus-apex-aconfig-java-defaults"],
		}

		java_aconfig_library {
		name: "android.content.res.flags-aconfig-java-host",
		aconfig_declarations: "android.content.res.flags-aconfig",
		host_supported: true,
		defaults: ["framework-minus-apex-aconfig-java-defaults"],
		}

		// Media BetterTogether
		aconfig_declarations {
		name: "com.android.media.flags.bettertogether-aconfig",

core/java/android/app/ResourcesManager.java

+137 −0

Original line number	Diff line number	Diff line
		@@ -124,6 +124,32 @@ public class ResourcesManager {
		*/
		private LocaleConfig mLocaleConfig = new LocaleConfig(LocaleList.getEmptyLocaleList());

		private final ArrayMap<String, SharedLibraryAssets> mSharedLibAssetsMap =
		new ArrayMap<>();

		/**
		* The internal function to register the resources paths of a package (e.g. a shared library).
		* This will collect the package resources' paths from its ApplicationInfo and add them to all
		* existing and future contexts while the application is running.
		*/
		public void registerResourcePaths(@NonNull String uniqueId, @NonNull ApplicationInfo appInfo) {
		SharedLibraryAssets sharedLibAssets = new SharedLibraryAssets(appInfo.sourceDir,
		appInfo.splitSourceDirs, appInfo.sharedLibraryFiles,
		appInfo.resourceDirs, appInfo.overlayPaths);

		synchronized (mLock) {
		if (mSharedLibAssetsMap.containsKey(uniqueId)) {
		Slog.v(TAG, "Package resources' paths for uniqueId: " + uniqueId
		+ " has already been registered, this is a no-op.");
		return;
		}
		mSharedLibAssetsMap.put(uniqueId, sharedLibAssets);
		appendLibAssetsLocked(sharedLibAssets.getAllAssetPaths());
		Slog.v(TAG, "The following resources' paths have been added: "
		+ Arrays.toString(sharedLibAssets.getAllAssetPaths()));
		}
		}

		private static class ApkKey {
		public final String path;
		public final boolean sharedLib;
		@@ -278,6 +304,21 @@ public class ResourcesManager {
		public ResourcesManager() {
		}

		/**
		* Inject a customized ResourcesManager instance for testing, return the old ResourcesManager
		* instance.
		*/
		@UnsupportedAppUsage
		@VisibleForTesting
		public static ResourcesManager setInstance(ResourcesManager resourcesManager) {
		synchronized (ResourcesManager.class) {
		ResourcesManager oldResourceManager = sResourcesManager;
		sResourcesManager = resourcesManager;
		return oldResourceManager;
		}

		}

		@UnsupportedAppUsage
		public static ResourcesManager getInstance() {
		synchronized (ResourcesManager.class) {
		@@ -1480,6 +1521,56 @@ public class ResourcesManager {
		}
		}

		private void appendLibAssetsLocked(String[] libAssets) {
		synchronized (mLock) {
		// Record which ResourcesImpl need updating
		// (and what ResourcesKey they should update to).
		final ArrayMap<ResourcesImpl, ResourcesKey> updatedResourceKeys = new ArrayMap<>();

		final int implCount = mResourceImpls.size();
		for (int i = 0; i < implCount; i++) {
		final ResourcesKey key = mResourceImpls.keyAt(i);
		final WeakReference<ResourcesImpl> weakImplRef = mResourceImpls.valueAt(i);
		final ResourcesImpl impl = weakImplRef != null ? weakImplRef.get() : null;
		if (impl == null) {
		Slog.w(TAG, "Found a ResourcesImpl which is null, skip it and continue to "
		+ "append shared library assets for next ResourcesImpl.");
		continue;
		}

		var newDirs = new ArrayList<String>();
		var dirsSet = new ArraySet<String>();
		if (key.mLibDirs != null) {
		final int dirsLength = key.mLibDirs.length;
		for (int k = 0; k < dirsLength; k++) {
		newDirs.add(key.mLibDirs[k]);
		dirsSet.add(key.mLibDirs[k]);
		}
		}
		final int assetsLength = libAssets.length;
		for (int j = 0; j < assetsLength; j++) {
		if (dirsSet.add(libAssets[j])) {
		newDirs.add(libAssets[j]);
		}
		}
		String[] newLibAssets = newDirs.toArray(new String[0]);
		if (!Arrays.equals(newLibAssets, key.mLibDirs)) {
		updatedResourceKeys.put(impl, new ResourcesKey(
		key.mResDir,
		key.mSplitResDirs,
		key.mOverlayPaths,
		newLibAssets,
		key.mDisplayId,
		key.mOverrideConfiguration,
		key.mCompatInfo,
		key.mLoaders));
		}
		}

		redirectResourcesToNewImplLocked(updatedResourceKeys);
		}
		}

		private void applyNewResourceDirsLocked(@Nullable final String[] oldSourceDirs,
		@NonNull final ApplicationInfo appInfo) {
		try {
		@@ -1689,4 +1780,50 @@ public class ResourcesManager {
		}
		}
		}

		public static class SharedLibraryAssets{
		private final String[] mAssetPaths;

		SharedLibraryAssets(String sourceDir, String[] splitSourceDirs, String[] sharedLibraryFiles,
		String[] resourceDirs, String[] overlayPaths) {
		mAssetPaths = collectAssetPaths(sourceDir, splitSourceDirs, sharedLibraryFiles,
		resourceDirs, overlayPaths);
		}

		private @NonNull String[] collectAssetPaths(String sourceDir, String[] splitSourceDirs,
		String[] sharedLibraryFiles, String[] resourceDirs, String[] overlayPaths) {
		final String[][] inputLists = {
		splitSourceDirs, sharedLibraryFiles, resourceDirs, overlayPaths
		};

		final ArraySet<String> assetPathSet = new ArraySet<>();
		final List<String> assetPathList = new ArrayList<>();
		if (sourceDir != null) {
		assetPathSet.add(sourceDir);
		assetPathList.add(sourceDir);
		}

		for (int i = 0; i < inputLists.length; i++) {
		if (inputLists[i] != null) {
		for (int j = 0; j < inputLists[i].length; j++) {
		if (assetPathSet.add(inputLists[i][j])) {
		assetPathList.add(inputLists[i][j]);
		}
		}
		}
		}
		return assetPathList.toArray(new String[0]);
		}

		/**
		* @return all the asset paths of this collected in this class.
		*/
		public @NonNull String[] getAllAssetPaths() {
		return mAssetPaths;
		}
		}

		public @NonNull ArrayMap<String, SharedLibraryAssets> getSharedLibAssetsMap() {
		return new ArrayMap<>(mSharedLibAssetsMap);
		}
		}

core/java/android/content/res/AssetManager.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -471,6 +471,16 @@ public final class AssetManager implements AutoCloseable {
		return addAssetPathInternal(path, true /overlay/, false /appAsLib/);
		}

		/**
		* @hide
		*/
		public void addSharedLibraryPaths(@NonNull String[] paths) {
		final int length = paths.length;
		for (int i = 0; i < length; i++) {
		addAssetPathInternal(paths[i], false, true);
		}
		}

		private int addAssetPathInternal(String path, boolean overlay, boolean appAsLib) {
		Objects.requireNonNull(path, "path");
		synchronized (this) {

core/java/android/content/res/Resources.java

+7 −1

Original line number	Diff line number	Diff line
		@@ -43,6 +43,7 @@ import android.annotation.StyleRes;
		import android.annotation.StyleableRes;
		import android.annotation.XmlRes;
		import android.app.Application;
		import android.app.ResourcesManager;
		import android.compat.annotation.UnsupportedAppUsage;
		import android.content.Context;
		import android.content.pm.ActivityInfo;
		@@ -2854,6 +2855,11 @@ public class Resources {
		@FlaggedApi(android.content.res.Flags.FLAG_REGISTER_RESOURCE_PATHS)
		public static void registerResourcePaths(@NonNull String uniqueId,
		@NonNull ApplicationInfo appInfo) {
		throw new UnsupportedOperationException("The implementation has not been done yet.");
		if (Flags.registerResourcePaths()) {
		ResourcesManager.getInstance().registerResourcePaths(uniqueId, appInfo);
		} else {
		throw new UnsupportedOperationException("Flag " + Flags.FLAG_REGISTER_RESOURCE_PATHS
		+ " is disabled.");
		}
		}
		}

core/java/android/content/res/ResourcesImpl.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@ import android.annotation.StyleRes;
		import android.annotation.StyleableRes;
		import android.app.LocaleConfig;
		import android.app.ResourcesManager;
		import android.app.ResourcesManager.SharedLibraryAssets;
		import android.compat.annotation.UnsupportedAppUsage;
		import android.content.pm.ActivityInfo;
		import android.content.pm.ActivityInfo.Config;
		@@ -47,6 +48,7 @@ import android.os.Build;
		import android.os.LocaleList;
		import android.os.ParcelFileDescriptor;
		import android.os.Trace;
		import android.util.ArrayMap;
		import android.util.AttributeSet;
		import android.util.DisplayMetrics;
		import android.util.Log;
		@@ -197,6 +199,14 @@ public class ResourcesImpl {
		public ResourcesImpl(@NonNull AssetManager assets, @Nullable DisplayMetrics metrics,
		@Nullable Configuration config, @NonNull DisplayAdjustments displayAdjustments) {
		mAssets = assets;
		if (Flags.registerResourcePaths()) {
		ArrayMap<String, SharedLibraryAssets> sharedLibMap =
		ResourcesManager.getInstance().getSharedLibAssetsMap();
		final int size = sharedLibMap.size();
		for (int i = 0; i < size; i++) {
		assets.addSharedLibraryPaths(sharedLibMap.valueAt(i).getAllAssetPaths());
		}
		}
		mMetrics.setToDefaults();
		mDisplayAdjustments = displayAdjustments;
		mConfiguration.setToDefaults();